8. Annual MT Meeting

26 Sept 2022, 04:00 → 27 Sept 2022, 22:00 Europe/Berlin

Various Rooms, see agenda (DESY Hamburg)

Anke-Susanne Mueller (KIT), Ties Behnke (DESY)

The 8th annual meeting of the programme "Matter and Technologies" will be hosted by DESY in Hamburg from Monday, September 26, 2022, to Tuesday, September 27, 2022.

The traditional Student Retreat, scheduled for Wednesday September 28, 2022, will now also be hosted by DESY in Hamburg.

The meeting will be organised jointly by DESY and the Forschungszentrum Juelich. Due to unexpected developments at the original host of the 8th MT meeting, the Forschungszentrum Juelich, the location of the meeting had to be changed and the meeting is taking place at DESY Hamburg.

**** Remote  participation*** Zoom details of the MT annual meeting *** Hybrid mode****

All Plenaries/ARD Session on Monday (Main Auditorium)

https://desy.zoom.us/j/68052687386 Meeting ID: 680 5268 7386 Passcode: Add 1 to 545578

Parallel sessions, all with Passcode MT[at]DESY
(replace [at] by @)

ARD/KfB on Tuesday https://desy.zoom.us/j/67495300312 Meeting-ID: 674 9530 0312 (on Monday see above for Zoom of the main auditorium) Passcode MT[at]DESY

DTS https://desy.zoom.us/j/64609176272 Meeting-ID: 646 0917 6272 Passcode MT[at]DESY

DMA https://desy.zoom.us/j/62101730822 Meeting-ID: 621 0173 0822 Passcode MT[at]DESY

MTAnnualMeeting2022Bulletin1.pdf

PosterAbstractsMTAnnualMeeting2022.pdf

Maps & Tours

• MapPosterDinner.pdf
• MapSessions.pdf
• MapTours.pdf
• OverviewTours.pdf

Monday, 26 September

08:00 → 09:00 Registration

09:00 → 10:20 Plenary

Conveners: Jens Osterhoff (DESY), Rikhav Shah (technical support) (ALPS (ALPS _ Any Light Particle Search))

09:00 Welcome

09:15 MT Welcome

Speaker: Ties Behnke (DESY)

MT_program_Introduction_v4.pptx

09:35 Prospects for Non-linear QED Studies with high-power lasers and compact accelerators

Speaker: Henri Vincenti (LIDYL, CEA, CNRS, University Paris-Saclay)

Presentation_MT_Days_upload.pptx

10:20 → 10:25 Group Photo

10:25 → 10:45 Coffee break

10:45 → 13:00 Plenary

Conveners: Mathis Frahm (technical support) (UNI/EXP (Uni Hamburg, Institut fur Experimentalphysik)), Michael Bussmann (CASUS / Helmholtz-Zentrum Dresden - Rossendorf)

10:45 Cryogenic Sensors in Metrology

Speaker: Joern Beyer (PTB )

HGF_MT_26_27_Sept_2022_CryoDetectors_in_Metrology_JBeyer_PTB_25Sept2022.pptx

11:30 Accelerating the rate of discovery: Toward AI-driven highrepetition- rate high energy density (HED) laser science

Speaker: Tammy Ma (LLNL)

Helmholtz_TMa_20220921.pdf

12:15 The Electron Ion Collider – Status, Challenges, and Technology Needs

Announced in 2021, the U.S. Department of Energy has approved the “completion of definition” or Critical Decision 1 (CD-1) for the Electron Ion Collider (EIC). This marked the formal start of a conceptual design of this one-of-a-kind research platform for expanding our understanding of mass, structure, and binding of atomic nuclei that make up the entire visible universe.
With its site selected at Brookhaven National Laboratory (BNL), the EIC is under intensive design and study by a joint team between the Brookhaven National Laboratory and Thomas Jefferson National Accelerator Facility. The ultimate goal of the EIC is to explore nuclei structures at center of mass energies ranged from 20 - 140 GeV with the highly polarized electron and hadron beams with a luminosity of 0.1 – 1 x 10^34 cm^-2 sec^-1. The collider design accommodates a variety of ion species from proton to uranium at two possible detector sites.
To achieve the ultimate goal in a timeframe of around a decade, a number of challenges of both the EIC accelerator and detector design pushes towards the state-of-art and even beyond, such as Strong Hadron Cooling, luminosity recovery with large crossing angle, high charge polarized electron source, RHIC beam pipe shielding, etc.. This talk will introduce the current status and plan of the EIC and bring forth a selection of the excitement of the challenges and opportunities for collaborations.

Speaker: Qiong Wu (BNL)

MTDays_QWu_final.pptx

13:00 → 14:00 Lunch

14:00 → 15:40 Accelerator Research and Development

Convener: Song Li (technical support) (MPA4 (PAs for Industrial and Health Applicatio))

14:00 Investigating energy futures: The KITTEN test facility for sustainable research infrastructures

Speaker: Giovanni de Carne (KIT)

2022_Investitgating energy futures The KITTEN test facility for sustaina....pdf

14:20 RRR measurements of niobium samples after vacuum heat treatments with and without nitrogen

Speaker: Christopher Bate (U HH (Universitaet Hamburg))

Christopher_Bate_16x9.pptx

14:35 Understanding Flux-trapping in niobium samples

Speaker: Felix Kramer (HZB)

Understanding Flux-trapping in niobium samples.pptx

14:50 High temperature superconductors and magnet technologies

Speaker: Samira Fatehi (LAS, Karlsruhe institute of technology)

SLIDES_MT_HTS-Samira Fatehi.pdf

SLIDES_MT_HTS-Samira Fatehi.pptx

15:05 Development of a new HTS Nuklotron cable for fast ramped S.C. magnets

Speaker: Tiemo Winkler (GSI)

TWi_MT_HTS_Nuclotron.pdf

15:20 Recent superconducting cw-Linac-efforts at GSI/HIM

Speaker: Florian Dziuba (Helmholtz Institute Mainz)

2022_09_26__MT_Meeting_Dziuba_final.pptx

14:00 → 15:40 Data Management and Analysis

Convener: Mareike Meyer (technical support) (DESY)

14:00 Overview DMA

This gives an overview of the current status of the topic Data Management & Analysis

Speakers: Michael Bussmann (CASUS / Helmholtz-Zentrum Dresden - Rossendorf), Volker Guelzow (IT (Informationstechnik))

Overview DMA.pptx

14:10 Status Report Subtopic 1

This is a statuts report of the DMA subtopic 1, "The Matter Information Fabric".

Speakers: Kilian Schwarz (IT (IT Scientific Computing)), Yves Kemp (IT (IT Systems))

ST1-Sept2022-MT.pdf

14:20 Status Report Subtopic 2

This is a status report of the DMA subtopic 2, "The Digital Scientific Method".

Speakers: Guido Juckeland (Helmholtz-Zentrum Dresden - Rossendorf (HZDR)), Mohammad Al-Turany (GSI Helmholtzzentrum für Schwerionenforschung)

2022-09-26-ST2-highlights-2022-2.pdf

14:30 Status Report Subtopic 3

This is a status report of the DMA subtopic 3, "The digital experiment and machine".

Speakers: Gregor Hartmann (Helmholtz-Zentrum Berlin), Jens Viefhaus (Helmholtz-Zentrum Berlin), Tim Wilksen (MCS (MCS Fachgruppe 1))

Monday_ST3-report_Hartmann_V2.pdf

14:40 Discussion on DMA Strategy

This is an internal discussion session on the DMA strategy.

Speakers: Michael Bussmann (CASUS / Helmholtz-Zentrum Dresden - Rossendorf), Volker Guelzow (IT (Informationstechnik))

14:00 → 15:40 Detector Technologies and Systems

Conveners: Silvia Masciocchi (chair) (GSI and Uni Heidelberg), Timo Christian (technical support)

14:00 Efficiency and spatial resolution of bent Monolithic Active Pixel Sensors measured with a 5.4 GeV electron beam

The ALICE ITS3 project will be the first application of bent pixel sensors in high energy physics experiments. Combining truly cylindrical chips of unprecedented low material budget with the migration to a new process technology node that allows stitched sensors will pave the way to a nearly massless detector system. Understanding the effects that could potentially alter its performance is of utmost importance for the current R&D step.
To assess the performance of existing 50 μm-thick chips with respect to bending, several ALPIDE sensors were bent to the ITS3 targeted radii of 18, 24 and 30 mm and consequently tested during test beam campaigns. In this contribution, sensor performance results obtained with 5.4 GeV electron beams are presented.
The sensors are found to have an efficiency larger than 99.9% and a spatial resolution of 5 µm, in accordance with the nominal operation of flat ALPIDE sensors. These values are found to be independent of the bending radius and mark the beginning of an exciting chapter on silicon-detector design, paving the way to a new class of nearly-massless detectors, with ideal geometrical properties.

Speaker: Bogdan Blidaru (Heidelberg University / GSI Helmholtzzentrum für Schwerionenforschung GmbH)

MT_26_09_22_Blidaru_BentALPIDEAnalysis_f.pdf

14:20 Characterisation of neutron irradiated Digital Pixel Test Structures produced in 65 nm TPSCo CMOS process

The ALICE Inner Tracking System has been recently upgraded to a new version (ITS2), which is entirely based on Monolithic Active Pixel Sensors (MAPS). For a future upgraded tracker, the ITS3, it is intended to replace the three innermost layers of the current ITS2 to further improve its vertexing capabilities. The proposed design features wafer-scale, ultra-thin, truly cylindrical MAPS. In order to benefit from the smaller feature size and the larger available wafers, the foreseen sensors are planned to be produced in 65 nm CMOS technology.

An extensive R&D programme is established in order to qualify this technology for the application in MAPS. As one of the first steps towards a new pixel sensor, a Digital Pixel Test Structure (DPTS) has been designed and produced. Several of these prototypes are characterized in laboratory measurements and beam test campaigns at DESY and CERN. Furthermore, a subset of them has been neutron irradiated to different levels ranging from 1e13 to 1e16 1 MeV neq/cm2 in order to study effects of radiation damage on the sensor performance.

Results from the sensor characterisation are presented focussing on detection efficiency and position resolution. The outcome of these studies is encouraging for the application of the 65 nm CMOS technology in future MAPS-based detectors.

Speaker: Pascal Becht (Heidelberg University, GSI Helmholtzzentrum für Schwerionenforschung GmbH)

MT-DTS_DPTS_performance_Pascal_Becht (2).pdf

14:40 The Tangerine Project: Monolithic Active Pixel Sensors in a 65 nm imaging process

The implementation of new detector technologies is mandatory to continue the rapid evolution of High Energy Physics Experiments. The goal of the TANGERINE project is to develop the next generation of monolithic silicon pixel detectors using a 65 nm CMOS imaging process, which offers a higher logic density and overall lower power consumption compared to previously used processes. One objective of this project is to develop a telescope to potentially be used at the DESY test beam facility, in order to demonstrate the viability of the process for Particle Physics.

The performance aim of the project is to achieve excellent spatial and time resolutions, be-
low 3 μm and around 1 ns respectively. In order to understand the processes and parameters that are involved in the developments in the new 65 nm technology, a combination of Technology Computer-Aided Design (TCAD) and Monte Carlo (MC) simulations are studied. These results can later be compared to results from test beam experiments.

The first prototype chips with a pitch of 16 μm and an array of 4 pixels with analog readout
have been tested at DESY II, CERN SPS and MAMI test beam facilities. A different submission of prototype chips, the Analogue Pixel Test Structures (APTS), with a larger pixel array, various pixel sizes, different pixel layouts and biasing schemes have also been tested at DESY II and MAMI test beam facilities. An overview of the project’s progress, the data obtained , the data analysis and simulation results will be presented.

Speaker: Manuel Alejandro Del Rio Viera (ATLAS (ATLAS-Experiment))

The Tangerine_Project.pdf

15:00 MightyPix: An HV-CMOS pixel chip for LHCb’s Mighty Tracker

In the coming years the Large Hadron Collider (LHC) at CERN is being upgraded to work at higher luminosities, leading to the High-Luminosity LHC. The HL-LHC will reach luminosities up to 5 × 1034 cm−2 s−1 collecting at least 3000 fb−1 of data in its lifetime. To handle the increased luminosity and data rate, the experiments at the LHC will be upgraded as well.
One of the proposed changes is the installation of the Mighty Tracker, a new hybrid tracking system for the LHCb detector. It would consist of scintillating fibres in the outer regions and silicon sensors in the inner regions, where the hit density is the highest. The proposed baseline technology for the silicon sensors are High-Voltage CMOS detectors, which meet the requirements for radiation hardness and granularity. These pixel chips combine sensing element and readout logic in a single device and prototypes for the ATLAS and Mu3e experiments have already proven successful.
The HV-CMOS pixel chip currently being developed for the Mighty Tracker is called MightyPix. A first test chip has already been designed, fabricated, and studied at a test beam at DESY. The first LHCb compatible prototype has been submitted for fabrication in June and is expected back this winter. It has a full column height of 2 cm and is 0.5 cm wide, one fourth of the final width. It can already handle the Timing and Fast Control signals coming from LHCb and has an I2C interface, needed for the lpGBT readout chips used by LHCb. The first full-sized prototype with a reticle size of 2 cm x 2 cm will follow next year.
Eventually, over 46000 MightyPix sensors would be installed in the Mighty Tracker to cover an area of 18 m2.

Speaker: Sigrid Scherl

MightyPix_SigridScherl.pdf

15:20 AstroPix: A novel HV-CMOS pixel sensor for space-based experiments

A new application for monolithic pixel detectors is NASA’s AMEGO-X project, which is a low-orbit gamma ray observatory for multimessenger astrophysics, planned as a 3 to 5 year mission set to take off in 2028. For the 40-layer Compton camera, which will consist of over 64000 sensors with a total area of more than 25 m², a new low power and high dynamic range monolithic active pixel sensor named AstroPix is currently being developed.
The first two versions, AstroPix v1 a 5 x 5 mm2 test chip with 200 x 200 μm² pixels and AstroPix v2 a 1 x 1 cm2 test chip with 250 x 250 μm² pixels have already been designed and fabricated. The energy resolution and the SEU and latchup performances required for the usage in space are currently studied in test beams. The newest version AstroPix v3, has been submitted for fabrication in July 2022 and is expected to be produced in early 2023.
This prototype is the first full reticle chip with 500 x 500 μm² large pixels. It features a new guard ring design which is expected to withstand a depletion voltage of over 300 V, which is needed to fully deplete the substrate of 500 μm. Being able to deplete thick sensors would also enable new applications of HV-CMOS sensors for detection of high energy photons and direct energy measurement of charged particles.

Speaker: Nicolas Striebig (KIT)

MT_AstroPix_Striebig.pdf

15:40 → 16:10 Coffee Break

16:10 → 17:25 Accelerator Research and Development

Convener: Elena Svystun (technical support) (DESY)

16:10 A Quarter-wave-resonator based SRF Gun for the LCLS-II High Energy project

Speaker: Rong Xiang (HZDR)

Xiang_QWR SRF gun for LCLS-II HE.pdf

16:25 Status of Beam-Based Feedback Research and Development for CW Linac ELBE

Speaker: Andrei Maalberg (Helmholtz-Zentrum Dresden-Rossendorf)

20220923_mt_slides.pdf

16:40 First Measurement of Quantum Diffusion in a Linear Accelerator

Speaker: Dr Sergey Tomin (DESY)

Tomin_MT.pdf

16:55 Current status and future development of laser-lab infrastructure at HI-Jena

Speaker: Alexander Sävert (GSI Helmholtz Institut Jena)

MTMeetingHamburgSaevert.pdf

17:10 Recent research highlights from the plasma-wakefield-accelerator experiment FLASHForward

Speaker: Richard D'Arcy (MPA2 (Beam-Driven Plasma Accelerators))

2022-09_MT.pdf

16:10 → 17:25 Data Management and Analysis

Convener: Mareike Meyer (technical support) (DESY)

16:10 Science Goals & Highlights ST2

This gives an overview of the ST2 scientific goals and highlights

Speakers: Guido Juckeland (Helmholtz-Zentrum Dresden - Rossendorf (HZDR)), Mohammad Al-Turany (GSI Helmholtzzentrum für Schwerionenforschung)

16:20 Quantum Machine Learning lies at the intersection of Quantum Computing and Machine Learning

It is usually employed to analyze classical data in a hybrid mode but also algorithms which are fully realized on quantum computers are appearing. In this talk two examples are presented. One project aims at the accurate simulation for a calorimeter at the HL-LHC employing Quantum Generative Adversarial Networks (Q-GANs) in order to cope with tremendous number of channels and the pile-up. The second example deals with tracking at the LUXE Experiment. This experiment at the XFEL will study QED in the strong-field regime where it becomes non-perturbative. Here extremely high field intensities are a challenge for accurate tracking and addressed with classical methods and Graph Neural Network (GNN) as well as with quantum algorithms like Variational Quantum Eigensolver (VQE).

Speaker: Kerstin Borras (DESY and RWTH Aachen University)

2022-05-011-QML-at-DESY_v2.pptx

16:35 Towards a Data-driven Digital Twin of a Free Electron Laser

Sources of soft X-rays are highly appealing in research as they allow to image atomic- and
molecule- scaled structures, however high requirements to technical equipment complicate
application of such systems. Free electron laser is one of famous sources of ultra-intense
coherent X-ray beams. Convenient kilometer-scale electron accelerators make these
facilities expensive and difficult to maintain, while laser-driven electron accelerators might
significantly reduce size of free-electron lasers. In order to control such a source of X-rays
there are required time consuming numerical and experimental research. A rising demand
on statistical and mathematical methods for inversion of the system state, comprehension of
measurement data and quantification of data stability can only be met by a comprehensive
machine learning based digital twin for Free Electron Laser. The digital twin potentially
accelerates theoretical comprehension of the system, novel means for design space
exploration and promises reliable in-situ analysis of experimental diagnostics and
parameters which leads to democratization of laser-driven FELs accelerating fundamental
science in research field MATTER by collaborative efforts in Matter and Technologies. Digital
twin is comprising of multiple surrogate models for electron acceleration processes by virtue
of that one could unveil beam dynamics on the scope of collected diagnostic. This
formulation allows us to derive observables within the beamline promising physics-informed
inversion of the beamline meaning that we are able to explain observations guided by our
theoretical understanding.

Speaker: Anna Willmann

2022-09-26-ST2-HelmholtzAI-Intro.pdf

AWillmann_MTMeeting_1.pdf

16:50 Onboarding DMA Software to ESCAPE-OSSR Catalogue

The cooperation between the DMA and the ESCAPE Open-source
Scientific Software and Service Repository (OSSR) was
established last year, A series of meetings has been
organized and held, they were dedicated to joining efforts
of DMA-ST2 and ESCAPE OSSR. It was agreed to onboard DMA
projects as a domain in the OSSR. GSI-IT took over the
management process of the DMA projects onboarding. In this
talk we present the procedure by the example of R3BRoot
software (simulations and data analysis software of R3B
experiments at GSI/FAIR). This pilot project for
onboarding (adding) DMA software to the OSSR was used to
practice the whole workflow and write down the
documentation for our DMA community.

Speaker: Christian Tacke (GSI)

DMA-Meeting-20220926_OSSR.pdf

17:05 Discussion

Open discussion on ST2 strategy and plans.

16:10 → 17:30 Detector Technologies and Systems

Conveners: Bogdan Blidaru (chair) (Heidelberg University / GSI Helmholtzzentrum für Schwerionenforschung GmbH), Timo Christian (technical support) (FTX (FTX Fachgruppe DTA))

16:10 Different applications of Low Gain Avalanche Detectors

The rising demand for fast particle detectors able to handle the increasing luminosity in High Energy Physics (HEP) experiments has led to the development of a new family of silicon detectors, namely Low Gain Avalanche Detectors (LGADs). Due to their low material budget and excellent 4D-tracking capabilities, i.e. the simultaneous measurement of the particle‘s position and time with high spatial (>=10μm) and time (>=30ps) resolution, the application of LGADs is not only limited to HEP, e.g. as in-beam monitors or tracking detectors but they can also be used for medical
applications, such as ion imaging.
Within this contribution, we will present several use-cases of LGAD strip sensors, which were produced at Fondazione Bruno Kessler (FBK). This includes the reaction time (T0) detector for the High Acceptance Di-Electron Spectrometer (HADES) at GSI in Darmstadt, Germany, a beam-structure monitor for the Superconducting Darmstadt LINear Accelerator (S-DLINAC) at the Technische Universität Darmstadt and an ion imaging experiment conducted at the MedAustron cancer therapy and research centre in Wiener Neustadt, Austria.
After discussing first results, we will outline planned upgrades of the current systems and possible future projects at the GSI and FAIR facilities.

Speaker: Felix Ulrich-Pur (Institute of high energy phyiscs (HEPHY) Vienna)

8thMTFelixUlrich-Pur.pdf

16:30 Time-of-Flight: From LGADs to Physics

In recent years, the measurement of the time-of-flight (TOF) of charged particles has been identified as opportunity for particle identification (PID) at the future Higgs factories (FHF) currently under discussion by the international community, including the recently updated European Strategy for Particle Physics. TOF would in particular allow to identify charged hadrons at low momenta, complementary to PID via dE/dx or dN/dx in gaseous subdetectors or via Cherenkov light.
This talk highlights recent results from Low Gain Avalanche Diodes (LGAD) timing measurements that provide a resolution of a few 10 ps. Furthermore, it lays out the algorithmic implementation of TOF in a FHF detector, using the International Large Detector (ILD) as an example, in order to understand different use-cases and underlying limitations. This is complemented by an assessment, where TOF can be useful for the physics case at a FHF and what performance would be necessary for this.

Speaker: Ulrich Einhaus (FTX (Fachgruppe SLB))

2022_09_26_MT_DTS.pdf

16:50 Digital SiPMs for Tracking and Imaging Detector Applications

Silicon Photomultipliers (SiPMs) offer high gain (typically 10^5 to 10^6) and a large dynamic range from single photons to up to several 10 000 photons at low bias voltages. They consist of single-photon avalanche diodes (SPADs) operated in Geiger mode. The small size of the SiPMs compared to conventional PMTs allows much higher integration levels of the front-end electronics. Therefore, SiPMs are used in a growing number of fields, including also medical applications. For high energy collider detectors, DESY has developed a highly granular calorimeter technology based on small scintillator tiles individually read out by SiPMs, which will be used in the upgrade of the calorimeter endcap of the CMS detector for the high luminosity LHC.

Most SiPMs are analogue devices, with all SPADs read out in parallel. In contrast to conventional analogue SiPMs, in digital SiPMs each pixel is readout individually by a small quenching circuitry so the resulting signal can be used in its digital form, and only an inverter is necessary for event discrimination. Digital SiPMs could offer a number of advantages, like the possibility to switch off noisy SPADs or a simplified data acquisition system.

This work describes a proof-of-principle 32-by-32-pixel digital SiPM prototype which is sensitive to high-energetic particles and light. It consists of an ASIC designed by DESY using LFoundry’s 150-nm CMOS process. The process offers fully characterized SPADs developed by FBK enabling the integration of sensor and readout electronics on the same ASIC. The ASIC has a size of 3.4 x 3.3 mm² and comprises 32-by-32 pixels, each pixel consists of 4 SPADs with 70-μm pitch. The chip enables full hit matrix readout and timing measurements. The pixel electronics offers options to turn off noisy pixels, reduce after-pulsing and count hits. A fast wired-OR triggers a global 12-bit time-to-digital converter (TDC), with one TDC per ASIC quadrant. The TDC has a time resolution of better than 100 ps. An additional validation logic with adjustable settings allows discarding undesirable events. The total sustained data throughput of the ASIC amounts to 4 Gbit/s at 3-MHz frame rate. A readout system based on Caribou, a versatile readout system developed by CERN, BNL, DESY and University of Geneva especially for fast and simple implementation of new detectors, has been implemented.

First measurements of the prototype have been performed in the lab as well as in test beam conditions. The global and in-pixel efficiency map as well as the dark-count rate as a function of the bias voltage and temperature will be presented. The technology is flexible, allowing adjustments of many parameters which can be tailored to the foreseen application.

Speaker: Inge Diehl (FE (FEC Micro- und Optoelektronik))

dSiPM_MT22.pdf

17:10 Development of a High-rate HV-CMOS Sensor for Real-time Monitoring of a Medical Ion-beam

Radiotherapy is an important method in treatment of tumors. The most commonly used radiotherapy is X-ray and gamma radiation. More recently, irradiation with heavy ionized particles – such as protons and carbon ions – have been introduced clinically. The source of these particles is a particle accelerator. In contrast to X-ray and gamma radiation, ions and protons depose energy close to the end of their path, in a small tissue volume (Bragg-peak). By adjusting the beam direction and particle energy, it can be achieved that the largest portion of energy is delivered to the tumor and the healthy tissue in front and behind is less affected.
The present beam monitors are made of gas-filled ionization and multi-wire projection chambers (MWPC) that provide dose, position, and spot size information. We are developing a replacement detector system based on HV-CMOS technology. This technology promises to not only match the current beam monitoring system, but also significantly improve some key parameters: better spatial resolution, smaller integration time, 2-dimensional depiction of the beam spot and operational in a wider beam parameter range. However, the biggest advantage of a solid-state detector over MWPCs is the magnetic field tolerance. A simultaneous operation of magnetic resonance imaging and ion- irradiation allows for aiming at moving tumors deep inside the human body while sparing sensitive organs, like lung, colon or heart.
HV-CMOS is the right choice of technology, since standard monolithic active pixel sensors (MAPS) are not radiation tolerant enough to survive months or even years of continuous in-beam operation, while hybrid detectors exceed the material budget and are inhomogeneous affecting the beam (bumps). We have designed three pixel chips: HitPix1, a small test chip with in-pixel hit-counting electronics. HitPix2 is larger and with improved frontend for highest rates. HitPixInt integrates the deposited charge. All share a frame based readout and the ability to calculate the projection of the beam profile on-chip. The sensors have been successfully tested at the Heidelberg Ion-Beam Therapy Center (HIT) in a medical beam and in the magnetic field of an MRI-machine. The next step is the construction of a multi-chip detector demonstrator.

Speaker: Felix Ehrler (KIT)

MT2022_MedicalIonBeam_Ehrler_v2.pptx

17:25 → 17:40 Break

17:25 → 17:40 Break

17:30 → 17:40 Break

17:40 → 18:40 Plenary: Poster Speed Talks

Convener: Ties Behnke (DESY)

17:40 Status of Beam-Based Feedback Research and Development for the Linear Accelerator ELBE

The superconducting linear accelerator ELBE at Helmholtz-Zentrum Dresden-Rossendorf
is a versatile light source operated in a continuous wave (CW) mode. The CW allows flexible
electron bunch repetition rates and high average current, thus enabling experiments that
would otherwise be impossible to perform, hence the versatility.

Time resolved pump-probe experiments place higher demands on the beam stability. To address this requirement the existing digital LLRF control is complemented by a beam-based feedback scheme. In particular, the new scheme includes a bunch arrival time monitor and a beam-based feedback regulator. The latter is designed to reduce the bunch arrival time jitter.

In this contribution we give an overview of the new control scheme. Specifically, we present the main points of the design and implementation of the beam-based feedback regulator. Finally, we show the results of a recent ELBE machine study that demonstrated a reduction of the bunch arrival time jitter.

Speaker: Andrei Maalberg (Helmholtz-Zentrum Dresden-Rossendorf)

20220924_mt_speed_slides.pdf

17:45 Concepts for High Average Power Ti:Sa Pulse Compressors

With the development of kW-level average power Ti:Sapphire laser, thermal management becomes increasingly challenging. One key component, which currently limits the scaling towards higher average powers, is the final pulse compressor. Compressor gratings that provide sufficient spectral bandwidth to support few-10 femtosecond pulses – as required by many applications – are typically gold-coated. However, it is well-known that this final gold layer absorbs several percent of the incident laser energy, which then subsequently heats and deforms the grating substrate. The heat-induced deformation of the grating can severely degrade the spatio-temporal pulse quality [1] with dramatic consequences for applications such as laser-plasma acceleration.

Here, we discuss different concepts for compressor gratings, such as actively cooled gratings [2] and multi-layer dielectric gratings [3],[4] and their suitability as compressor gratings for the future KALDERA laser [5] at DESY.

References
[1] V. Leroux et al., Opt. Express 26, 13061 (2018)
[2] D. A. Alessi et a., Opt. Express 24, 30015 (2016)
[3] D. A. Alessi et al., Optics and Laser Technology 117, 239 (2019)
[4] T. Erdogan, PGL Tech. Note (2018)
[5] https://kaldera.desy.de/

Speaker: Cora Braun (Deutsches Elektronen Synchrotron DESY)

MT_Speedtalk_CBraun.pdf

17:50 Detector Challenges of the Strong-field QED Experiment LUXE at the European XFEL

The LUXE experiment is an experiment, still in the planning stage, which aims to observe then characterise strong-field quantum electrodynamics interactions by colliding the high-quality high-energy EU.XFEL electron beam with a powerful LASER. Colliding LASER pulses with bunches of 1.5 × 10^9 electrons / 1 × 10^8 photons at 1Hz, this high-statistics environment presents an opportunity to probe rare interactions in new parameter-space of a novel regime. To do this requires a unique array of detectors to measure three types of particles, at highly varying fluxes dependent on LASER interaction parameters. The detectors measure electrons, positrons, or photons, and balance sensitivity with high dynamic range and hardness to radiation damage. The technologies, design, and reconstruction methods of each of these detectors are presented in this poster.

Speaker: John Andrew Hallford (FLC (Forschung an Lepton Collidern))

MTmeetingspeedtalkJH.pdf

17:55 High current accelerator systems for future HBS: HBS Innovationpool Project

Hi-current compact accelerator-based neutron sources (Hi-CANS) offer a promising alternative to small and medium reactor and spallation based neutron research facilities. They do not require research reactors or high-energy spallation sources as they efficiently utilize nuclear processes at low acceleration energies. For the research and development of the various components and areas relevant to establish a high brilliance accelerator based neutron source the Innovation Pool project on “High current accelerator systems for future HBS” has been set up within the Research Field Matter of the Helmholtz Association starting in 2019.
Research and development in this project deal with i) linear pulsed proton accelerator cavities, (GSI HI Mainz), ii) fast proton beam multiplexing and beam dynamics (FZJ), iii) neutron target- and moderator development (FZJ), iv) neutron beam extraction and instrumentation (HZG) and v) neutron imaging and irradiation experiments (HZDR). The current status of the project and recent results of the work done so far will be presented.

Speaker: Alexander Schwab (JCNS-2, Forschungszentrum Jülich GmbH)

HBS poster MTAnnMeet2022_slides.pdf

18:00 Transverse and Longitudinal Modulation of Photoinjection Pulses at FLUTE

To generate the electrons to be accelerated, a photoinjection
laser is used at the linac-based test facility FLUTE
(Ferninfrarot Linac- Und Test Experiment) at the Karlsruhe
Institute of Technology (KIT). The properties of the laser
pulse, such as intensity, laser spot size or temporal profile,
are the first parameters to influence the characteristics of
the electron bunches. In order to control the initial parameters
of the electrons in the most flexible way possible, the
laser optics at FLUTE are therefore supplemented by additional
setups that allow transverse and longitudinal laser
pulse shaping by using so-called Spatial Light Modulators
(SLMs). In the future, the control of the SLMs will be integrated
into a Machine Learning (ML) supported feedback
system for the optimization of the electron bunch properties.
In this contribution the first test experiments and results on
laser pulse shaping at FLUTE on the way to this project are
presented.

Speaker: Matthias Nabinger (KIT)

2022-09-26_MT_speedtalk_Nabinger.pdf

18:05 Track reconstruction using a Quantum Computer for LUXE

LUXE (Laser Und XFEL Experiment) is a proposed experiment at DESY using the electron beam of the European XFEL and a high-intensity laser.
The experiment's primary aim is to investigate the transition from the well-probed perturbative into the non-perturbative regime of Quantum Electrodynamics that occurs at very high energies. In LUXE, the number of produced positrons is one of the most crucial quantities for investigating the transition between regimes. Since the reconstruction of trajectories from a set of hits is a combinatorial problem challenging for a classical computer to solve, our group explores the novel approach of expressing the track pattern recognition problem as a quadratic unconstrained binary optimization (QUBO), allowing the algorithm to be mapped onto a quantum computer. The poster will cover the methods and the latest progress of quantum algorithm-based tracking, which relies on Variational Quantum Algorithms to minimize the QUBO. The results are then benchmarked against classical methods using Graph Neural Network or a Combinatorial Kalman Filter.

Speaker: Annabel Kropf (DESY)

speedtalk_akropf.pdf

18:10 Split Boot - True network-based booting on heterogeneous MPSoCs

In the context of the High-Luminosity (HL) upgrade of the LHC, many custom ATCA electronics boards are being designed containing heterogeneous system-on-chip (SoC) devices, more specifically the Xilinx Zynq UltraScale+ (ZUS+) family. While the application varies greatly, these devices are regularly used for performing board management tasks, making them a fundamental element in the correct operation of the board. The large number of hundreds of SoC devices planned for the HL upgrade in 2027 creates significant challenges in their firmware deployment, maintenance, and accessibility.

Even though U-Boot on ZUS+ devices supports network boot through the preboot execution environment (PXE), the standard ZUS+ boot process contains application-specific information at earlier boot steps, particularly within the first stage boot loader (FSBL). This prevents the initialization of several devices from a universal image.

Inspired by the PXE boot, a novel boot method tailored to the specific needs of the ZUS+ is proposed. All application-specific ZUS+ configuration is moved to a network storage and automatically fetched during the boot process. Initially, the ZUS+ loads a partial configuration file that is stored locally and does not contain any application-specific information. Afterwards, it retrieves and applies the complete device configuration from the network.

For seamless integration, the entire process is considered, from firmware and software development to binary distribution in a large-scale system. As a result, the proposal consists of a mechanism for applying the device configuration and a highly automated framework for creating the necessary files that integrates with the standard Xilinx development toolset workflow.

Speaker: Marvin Fuchs (KIT)

8_MT_Meeting_Speed_Talk_Split_Boot_M_Fuchs.pdf

18:15 KINGFISHER: A Framework for Fast Machine Learning Inference for Autonomous Accelerator Systems

Modern particle accelerator facilities allow new and exciting beam properties and operation modes. Traditional real-time control systems, albeit powerful, have bandwidth and latency constraints that limit the range of operating conditions currently made available to users. The capability of Reinforcement Learning to perform self-learning control policies by interacting with the accelerator is intriguing. The extreme dynamic conditions require fast real-time feedback throughout the whole control loop from the diagnostic, with novel and intelligent detector systems, all the way to the interaction with the accelerator components. In this contribution, the novel KINGFISHER framework based on the modern Xilinx Versal devices will be presented. Versal combines several computational engines, specifically combining powerful FPGA logic with programmable AI Engines in a single device. Furthermore, this system can be natively integrated with the fastest beam diagnostic tools already available, e.g. KAPTURE and KALYPSO.

Speaker: Luca Scomparin (KIT IPE)

[20220926]_speedtalk_KINGFISHER_MT_meeting.pdf

18:20 HOM Damping of 3rd Harmonic Copper Cavities for Active Operation in the BESSY II Storage Ring

BESSY II third generation light source is a 1.7 GeV storage ring. It delivers high intensity 15ps pulses in standard user optics and shorter pulses in low alpha optics with reduced intensity. The integrated 3rd harmonic copper cavities (so called Landau cavities) are operated in passive mode and enable lifetime improvement of the storage ring. Currently a new type of 3rd harmonic cavity is under development for active operation in the storage ring for precise phase-amplitude control of the cavity voltage. The stable operation of those cavities in the storage ring requires strong HOM damping to avoid coupled bunch instabilities. This requires careful analyses of the HOM dampers and HOM power levels for the BESSY II fill pattern at 300mA current. Hence, as part of the cavity design, the appropriate absorbers are designed to extract the HOM power from the system. The analyses of HOM power levels and the integration of ferrite absorbers will be presented.

Speaker: Dr Andranik Tsakanian (Helmholtz-Zentrum Berlin)

MT2022_Speed_Talk_Tsakanian.pdf

18:25 dCache integration with CERN Tape Archive (CTA)

The ever increasing amount of data that is produced by modern scientific facilities like EuXFEL or LHC puts a high pressure on the data management infrastructure at the laboratories. This includes poorly shareable resources of archival storage, typically, tape libraries. To achieve maximal efficiency of the available tape resources a deep integration between hardware and software components are required.

The CERN Tape Archive (CTA) is an open-source storage management system developed by CERN to manage LHC experiment data on tape. Although today CTA's primary target is CERN Tier-0, the data management group at DESY considers the CTA as a main alternative to commercial HSM systems.

dCache has an flexible tape interface which allows connectivity to any tape system. Together with the CERN Tape Archive team we are working on seamless integration of CTA into dCache.

This presentation will show the design of dCache-CTA integration, current status and first test results at DESY.

Speaker: Mwai Karimi (IT (IT Scientific Computing))

Mwai_IMT2022_Poster.pdf

18:30 Probing Ion-motion Recovery in a Beam-driven Plasma-wakefield Accelerator

Beam-driven plasma-wakefield acceleration is a promising avenue for the future design of compact linear accelerators with applications in high-energy physics and photon science. Meeting the luminosity and brilliance demands of current users requires the delivery of thousands of bunches per second – many orders of magnitude beyond the current state-of-the-art of plasma-wakefield accelerators, which typically operate at the Hz-level. As recently explored at FLASHForward, a fundamental limitation for the highest repetition rate is the long-term motion of ions that follows the dissipation of the driven wakefield (R. D’Arcy, et al. Nature 603, 58–62 (2022)). Studying the dynamics of plasma recovery in greater detail is an essential first step in advancing beam-driven plasma-wakefield acceleration towards meaningful application in future high-energy-physics and photon-science facilities. Here we present the measurement methodology, the data processing, and discuss latest experimental results.

Speaker: Judita Beinortaite (DESY-FTX-AST)

MT8thMeeting_JuditaBeinortaite.pdf

MT8thMeeting_JuditaBeinortaite.pptx

18:35 Vote for Speed Talk Award

SpeedTalkVoting.pptx

18:40 → 19:00 Walk to CFEL Foyer

19:00 → 21:00 Conference Dinner with Poster exhibit

PosterAbstractsMTAnnualMeeting2022.pdf

Tuesday, 27 September

08:30 → 10:45 Plenary

Conveners: Friederike Januschek (DESY), Song Li (technical support) (MPA4 (PAs for Industrial and Health Applicatio))

08:30 The role of the AI Accelerator within ZEISS

The AI Accelerator is a small but growing team within ZEISS, founded less than a year ago. Its mission is to support all parts of the ZEISS business with Data Science and ML expertise, covering the full ML lifecycle, including productive deployment. This talk will explain how the AI Accelerator fits into the wider ZEISS ML landscape, what its ambitions are and what steps are taken to achieve them.

Speaker: Thomas Stecher (Carl Zeiss AG)

220927_DESY_MT_Meeting.pdf

09:15 ARD Summary

Speaker: Jens Osterhoff (DESY)

2022-09-27-MT-Days-ARD-Status.pptx

09:45 DTS Summary

Speaker: Marc Weber (KIT)

DTS_Summary_V10.pdf

10:15 DMA Summary

This talk gives an overview of the achievements of DMA and presents scientific highlights.

Speaker: Michael Bussmann (CASUS / Helmholtz-Zentrum Dresden - Rossendorf)

DMA_summary.pptx

10:45 → 11:05 Coffee

11:05 → 12:20 Plenary

Conveners: Judita Beinortaite (technical help) (DESY), Marc Weber (KIT)

11:05 Report from KfB (Komitee für Beschleunigerphysik)

Introduction and report of the KfB (in English: Committee for Accelerator Physics).
The presentation is delivered in English and/or bilingual.
Today at 16:30-17:15 the Plenary Meeting "Forum Beschleunigerphysik" (in English: Forum Accelerator Physics) will take place with a more detailed report on activities in the last year, upcoming activities and project funding information.

Speaker: Erik Bruendermann (KIT)

2022-09-27_MT_Meeting_KfB_Vorstellung_Report.pdf

11:25 Gravitational wave detectors and the Einstein Telescope

Speaker: Stefan Hild (NIKHEF and Uni Maastricht)

2022_09_27_Helmholtz.pdf

12:10 MT Closing remarks

Speaker: Ties Behnke (DESY)

MT_closeout.pdf

MT_closeout.pptx

12:20 → 14:15 Lunch and guided tours

12:30 → 13:30 Executive Board: MT executive board (restricted attendance)

14:15 → 16:15 Accelerator Research and Development

Convener: Elena Svystun (technical support) (DESY)

14:15 Highlights and Perspectives of Laser Plasma Accelerator Research in ARD

Speaker: Ulrich Schramm (HZDR)

ARD_ST4_Summary_schramm.pptx

14:35 Permanent magnet design for BESSY II and BESSY III

Speaker: Jens Voelker (HZB)

MT22_JVoelker_Permanentmagnets_202200927.pdf

14:50 Femtosecond Synchronization at EuXFEL: Challenges, Limitations and Mitigation Path

Speaker: Marie Kristin Czwalinna (DESY, MSK (Strahlkontrollen))

DESY_MT_2022_16x9_en_Czwalinna.pdf

15:10 Observations of Effects on Beam Dynamics at Negative Momentum Compaction Factors

Speaker: Patrick Schreiber (KIT)

PSchreiber_NAlpha_MT2022.pdf

15:25 Proton acceleration at DRACO-PW Laser surpassing the 100 MeV frontier

Speaker: Tim Ziegler (HZDR)

Ziegler_MT_2022.pptx

15:40 From usage of machine learning to possible impact in the ARD research program

Examples of machine learning used in ARD with contributions from DESY, GSI, HZB, HZDR, and KIT. Open for discussion on the possible impact of machine learning on the ARD research programme.

Speaker: Erik Bruendermann (KIT)

2022-09-27_MT-ARD.01_Bruendermann.pdf

16:00 First Lasing of the THz SASE FEL at PITZ

Speaker: Prach Boonpornprasert (Z_PITZ (Betrieb und Forschung))

Abstract_FirstLasingAtPITZ_MTmeeting_Julich_Sep22.pdf

Boonpornprasert_MTMeeting2022_PDF.pdf

Boonpornprasert_MTMeeting2022.pptx

14:15 → 16:00 Data Management and Analysis

14:15 Science goals and highlights ST1

This gives an overview of the ST1 scientific goals and highlights

Speakers: Kilian Schwarz (IT (IT Scientific Computing)), Yves Kemp (IT (IT Systems))

ST1-Sciencegoals-Highlights.pdf

14:25 Data reduction in photon science

New photon science experiments have reached the point where it is no longer possible to save all our original data. Due to the wide range of techniques used in photon science, a variety of data reduction strategies are needed to solve this problem; here, we give an overview of current methods and promising areas for future development.

Speaker: David Pennicard (FS-DS (Detektorsysteme))

DPennicard_DataReductionInPhotonScience_v3_sharing.pdf

DPennicard_DataReductionInPhotonScience_v3_withvideo.pptx

14:40 Enriching Scientific Research with Metadata: Electronic Lab Documentation Landscape at HZDR

The topic of electronic documentation draws more and more attention in the research field. The goal of the electronic documentation is to create the most complete descriptions of a data set. This talk provides an overview from the initialization in a research environment over the components, structure and interactions. How the electronic documentation is constructed depends on the existing IT landscape. An example how it can look like will be the landscape at HZDR. One specific aspect of the talk would be the role of an ELN within the electronic documentation.

Speaker: Thomas Gruber

Electronic_Documentation.pdf

14:55 Including CERN Tape Archive (CTA) in dCache

Speaker: Tigran Mkrtchyan (IT (IT Scientific Computing))

dcache-cta-integration.pdf

15:10 Discussion

Open discussion on ST1 strategy and plans.

Speakers: Kilian Schwarz (IT (IT Scientific Computing)), Michael Bussmann (CASUS / Helmholtz-Zentrum Dresden - Rossendorf), Yves Kemp (IT (IT Systems))

14:15 → 16:00 Detector Technologies and Systems

Conveners: Heinz Graafsma (chair) (FS-DS (Detektorsysteme)), Toko Hirono (technical support) (FS-DS (Detektorsysteme))

14:15 Superconducting quantum sensors – enabling technology for next-generation physics experiments

Progress in the understanding of nature often goes hand in hand with advances in physical instrumentation. For this reason, huge R&D efforts are taken to push detector technology beyond the present state of the art and to challenge physical and technological limitations. Within this context, superconducting quantum sensors represent a still rather new class of detectors that for selected applications outperform conventional detector technology by several orders of magnitude and that allows performing precision experiments that were considered impossible in the past. This talk first shortly reviews the concept and underlying physics of superconducting sensors and discusses the origin of the outstanding performance. Afterwards, we highlight example present and future applications that already and will potentially strongly benefit from the usage of superconducting quantum sensors. These include, for example, spectroscopy at brilliant light sources, searches for dark matter or material science with unprecedented possibilities. We also outline the role of the program MT for the journey ahead.

Speaker: Sebastian Kempf (KIT)

22-09-27_MT-Meeting_Kempf_final.pdf

14:35 The ECHo superconducting detectors and DAQ-electronics: From proof-of-concept to full-scale system

Superconducting sensors offer highest sensitivity and enable more precise and novel measurements. By utilizing magnetic microcalorimeters (MMCs), many research fields will experience advancements, such as improved energy resolution in particle physics. The ECHo experiment aims to investigate the mass of the electron neutrino using large-scale MMC-based detector arrays. For readout of hundreds of MMCs the interface to the cryogenic environment is challenging and the thermal transfer from the cables must be minimized. A proposed readout concept based on microwave SQUID multiplexing is able to read out hundreds of sensors through a single cable. The concept for the processing steps and a prototype DAQ electronics have been developed. Following successful testing with 16 channels, the system is now scaled up for its operation in the ECHo-100k experiment. Here, 800 sensors within a bandwidth of 4 to 8 GHz must be read out. This presentation will provide an overview of the current state of the general DAQ electronics for superconducting sensors and describe the hardware, firmware, and software necessary to prepare the system for use in the ECHo experiment.

Speaker: Timo Muscheid

statusupdate_echo.pdf

14:55 The Cryogenic Current Comparator (CCC): beam diagnostic at the CRYRING@ESR

The Cryogenic Current Comparator (CCC) at the heavy-ion storage ring CRYRING@ESR at GSI provides a calibrated non-destructive measurement of beam current with a resolution of 10 nA or better. With traditional diagnostics in storage rings or transfer lines a non-interceptive absolute intensity measurement of weak ion beams (< 1 µA) is already challenging for bunched beams and virtually impossible for coasting beams. Therefore, at these currents the CCC is the only diagnostics instrumentation that gives reliable values for the beam intensity independently of the measured ion species and without the need for tedious calibration procedures. Herein, after a brief review of the diagnostic setup, an overview of the operation of the CCC with different stored ion beams at CRYRING is presented. The current reading of the CCC is compared to the intensity signal of various standard instrumentations including a Parametric Current Transformer (PCT), an Ionization Profile Monitor (IPM) and the Beam Position Monitors (BPMs). It was shown that the CCC is a reliable instrument to monitor changes of the beam current in the range of nA.

Speaker: Thomas Sieber (GSI)

MT DTS Workshop DESY2022 Tuesday Sieber CCC.pdf

MT DTS Workshop DESY2022 Tuesday Sieber CCC.pptx

15:15 Single event effect characterisation at GSI - towards an upgrade of the micro-beam line

The monolithic CMOS pixel detector MIMOSIS is derived from ALPIDE and designed for significantly increased radiation dose and hit rate capabilities. This talk reports practical experiences from Single Event Effect (SEE) characterisation of MIMOSIS and another radiation-hardened oscillator ASIC at the GSI UNILAC beam lines M3 and X0. The latter micro-beam setup provides a pencil ion beam that can precisely irradiate a device under test. Since an upgrade of this beam-line is planned within the Distributed Detector Lab activities, possible improvements are discussed from a user's perspective.

Speaker: Oliver Keller (GSI)

SEE characterisation at GSI micro-beam - Keller.pdf

SEE characterisation at GSI micro-beam - Keller.pptx

15:35 MALTA: A monolithic active pixel sensor for radiation harsh environments

MALTA is a depleted monolithic active pixel sensor developed in the Tower 180 nm CMOS imaging process.
Monolithic CMOS sensors offer advantages over current hybrid imaging sensors both in terms of increased
tracking performance due to lower material budget but also in terms of ease of integration and construction
costs due to the integration of read-out and active sensor into one chip. Current research and development
efforts are aimed towards radiation hard designs up to 100 Mrad in Total Ionizing Dose (TID) and >1x1015 1
MeV neq/cm² in Non-Ionizing Energy Loss (NIEL). The design of the MALTA sensors was specifically chosen
to achieve radiation hardness up to these requirements and satisfy current and future collider constraints. The
current MALTA pixel architecture employs small electrodes which provide overall smaller noise, higher volt-
age signal and better power performance ratio. To counteract loss of efficiency in pixel corners, modifications
to the Tower process have been implemented. The MALTA sensors have been tested during the 2021 SPS
CERN Test Beam in the MALTA telescope. Additional characterization of MALTA2 samples will also take
place during the 2022 campaign. The telescope ran for the whole duration of the beam and took data in order
to characterize the novel MALTA2 variant and the performance of irradiated samples in terms of efficiency
and cluster size. These campaigns aim to show that MALTA is an interesting prospect for HL-LHC and beyond
collider experiments, providing both very good tracking capabilities and radiation hardness in harsh radiation
environments.

Speaker: Vlad Dumitru Berlea (Z_DET (Detektorentwicklung))

Matter&Technology_2022.pdf

16:00 → 16:30 Coffee

16:00 → 16:30 Coffee

16:15 → 16:30 Coffee

16:30 → 17:40 Data Management and Analysis

Convener: Bohdan Dudar (technical support) (FTX (FTX Fachgruppe SLB))

16:30 Current Development of Automated Accelerator Controls at DESY

In this talk, we introduce you to the recent progress of automated methods for accelerator controls at DESY. We present our activities towards automated control using reinforcement learning. We show our activities in automated control and software development for controls of the PETRA III storage ring. Lastly, we demonstrate our recent progress in data-driven anomaly detection activities at European XFEL.

Speaker: Antonin Sulc (MCS (MCS Fachgruppe 4))

MT_Meeting-1.pdf

16:45 Data analysis of tomography experiments at the Hereon beamlines at PETRA III

The Helmholtz-Zentrum Hereon is operating several tomography end stations at the
synchrotron radiation facility PETRA III at DESY in Hamburg, Germany. Here, we give an overview
of the reconstruction, processing and analysis of tomography data and report on the latest
development including machine learning for image enhancement, segmentation, and multimodal
data analysis, a guided interactive and iterative framework for segmentation of user data, and
digital volume correlation for 4D time-series analysis.

Speaker: Julian Moosmann (Helmholtz-Zentrum Hereon)

2022-09-27_MT-DMA_moosmann.pptx

17:00 From laser-plasma accelerator experiments to digital twins -- tightening the links by synthetic diagnostics and experimental data reconstruction

Building high-fidelity digitial twins through start-to-end models to better understand
and control advanced laser-plasma accelerators, as well as compact free-electron laser
beamlines, requires direct comparison to experimental data. We highlight recent results in startto-
end simulations and developments with a focus on their connection to experiment, such as by
synthetic diagnostics and experimental data reconstruction analyses.

Speaker: Alexander Debus (a.debus@hzdr.de)

2022_MT_DMA_Debus.pdf

2022_MT_DMA_Debus.pptx

17:15 Real-world knowledge extraction via disentangled dimensionality reduction

We present multiple applications of disentangled variational autoencoder while
compressing high-dimensional data into a human-interpretable representation.

Speaker: Gregor Hartmann (Helmholtz-Zentrum Berlin)

ST3-highlight_Hartmann_v2.pdf

17:30 Open Discussion

Open discussion on ST3 topics

Speakers: Gregor Hartmann (Helmholtz-Zentrum Berlin), Michael Bussmann (CASUS / Helmholtz-Zentrum Dresden - Rossendorf)

16:30 → 17:50 Detector Technologies and Systems

Conveners: Jose Alejandro Rubiera Gimeno (technical support) (ALPS), Oliver Keller (chair) (GSI)

16:30 The Back-illuminated 2-Megapixel Soft X-ray Imager, PERCIVAL-P2M

The "Pixelated Energy Resolving CMOS Imager, Versatile And Large" (PERCIVAL) is a monolithic CMOS active pixel sensor for soft X-rays in synchrotron rings and free-electron lasers. The first back-illuminated full-size sensor, P2M, has a large continuous sensitive area of 4 cm x 4 cm (1408 x 1484 pixels of 27 um x 27 um) and has been applied to user experiments at FLASH and Petra III. A new calibration algorithm has been developed to correct non-linear responses of PERCIVAL. We will report on the status of the project together with the user-experiment results and an overview of the upgrades in progress.

Speakers: Alessandro Marras (FS-DS (Detektorsysteme)), Toko Hirono (CFEL/DESY), Toko Hirono (FS-DS (Detektorsysteme))

MTmtg2022_hirono_v2.pdf

16:50 Development of CoRDIA: An Imaging Detector for next-generation Synchrotron Rings and Free Electron Lasers

Currently the landscape of Synchrotron Radiation sources is experiencing a major change by planned or ongoing machine upgrades: Most storage rings reach the diffraction limit, causing an expected increase in brilliance by about two orders of magnitude. Most FEL1 sources increase repetition rates to around 100kHz. This also holds true for the European XFEL2, where a change from the train mode (with 27kHz average rate) to CW3 operation at around 100kHz could be imaginable.
To fully exploit the increased performance of these sources, also imaging detectors need to be upgraded – from today’s imagers at storage rings and low rate FELs, capable of a few-kHz continuous frame rate to ≥100kHz. The ASICS of most imaging detectors for the European XFEL (like AGIPD4 or LPD5) can cope with image recording at up to 4.5MHz, but lack the readout bandwidth required for continuous rates faster than ≈10kHz. Furthermore the pixel size of these detectors is severely compromised by their in-pixel memory, not needed for continuous operation. However, the new requirements of diffraction limited storage rings and upgraded FELs overlap enough to be catered by a common detector system:
CoRDIA, the Continuous Readout Digitising Imager Array, developed by a collaboration between DESY
and Bonn University.
Design goals are continuous operation at ≥100kframe/s, single-photon sensitivity at 12 keV or less, a dynamic range up to 104 photons at the same energy, and a pixel pitch of 100μm. Complete detector systems will be composed as an array of hybrid assemblies, consisting of several readout ASICs bump-
bonded to a sensor. This ASIC will be compatible with different sensor materials and types:
- p-doped Silicon for the central (≈10keV) energy range,
- high-Z materials for higher energies, and
- LGAD6 sensors (with built-in amplification) for soft X-rays.
To achieve an (almost) dead time free operation, the ASIC implements a pipelined signal processing chain: While one image is digitised, the next one is integrated by the preamplifier, and the preceding one is read out.
This readout is based on the principle of the GWT-CC solution developed by Nikhef for Timepix4.
Basic circuit blocks have been manufactured on 2 MPW7 chips in TSMC 65nm technology and are currently being tested:
- An adaptive-gain charge integrating preamplifier, building on the experience of the AGIPD
detector
- A sampling stage with charge injection compensation
- A Correlated Double Sampling (CDS) stage capable of operation in different topologies
- Four variants of an SAR8 ADC9 developed by Bonn University
After verification and characterisation of these building blocks, we will follow a gradual approach with a first generation ASIC focusing on the ‘time domain’ i.e. reaching the specifications for pixel pitch and readout speed, while a 2nd generation chip will focus on ‘analogue specs’ optimising noise and extending the dynamic range to the final goal. This way unforeseen effects like crosstalk and substrate coupling as well as ‘scale effects’ will be known and can be countered on the 2nd generation chip.
We will present the CoRDIA ASIC’s architecture along with test strategies and results from the MPW prototypes

Speaker: Ulrich Trunk (FS-DS (Detektorsysteme))

2022-09-14_Cordia MT UT.pdf

2022-09-14_Cordia MT UT.pptx

17:10 The Serenity platform, an ATCA DAQ and processing blade for the CMS Phase-2 upgrade

In the context of the back-end processing system for the CMS Phase-2 upgrade, the Serenity platform has been developed to serve as a common data processing blade with a single and dual FPGA configuration.
The Serenity family emerged from two prototype ATCA boards designed to explore alternative configurations. Serenity-A was designed around a single Virtex US+ FPGA. Serenity-Z contained two sites that utilized Samtec z-ray interposer technology to mount removable FPGA-based daughter cards. For the production systems, a joint platform utilizing the best from both prototypes has been developed. It supports a single FPGA configuration (Serenity-S) and a dual FPGA configuration (Serenity-D).
In this talk, we present the Serenity-S platform and explain the fragmentation between service area and payload. Furthermore, the methods used to achieve a clean board separation and efficiently implement the desired sub-systems are explained.

Speaker: Torben Mehner

2022_09_27_Serenity_Platform.pdf

17:30 High-Z X-ray detectors: Latest developments in material research

There is a growing need for large area X-ray sensors. The next generation of X-ray sensors will be oriented towards digital imaging by making use of semiconductor materials with direct conversion at high efficiency so-called High-Z materials. Up to now, the production of large area sensors based on highly efficient semiconductors is limited. These limitations are related to growth process and fabrication. Novel materials and production techniques must be considered to take advantage of semiconductor X-ray sensors. Several semiconductors have been analysed in recent years, e.g., GaAs, (Cd,Zn)Te CZT, and recently Perovskites.
The presentation will give an actual summary about the different high-Z materials and detector development including the latest results of novel Perovskite semiconductors.

Speakers: Michael Fiederle (KIT), Michael Fiederle (University Freiburg FMF)

Fiederle High-Z MT Meeting 2022.pptx

16:30 → 17:15 KfB: KfB: Vollversammlung des Forums Beschleunigerphysik

Conveners: Erik Bruendermann (KIT), Niclas Hamann (technical support) (not set)

2022-09-27_MT_Meeting_KfB_Vollversammlung.pdf