5. Annual MT Meeting
→
Europe/Berlin
various rooms, please see programme (Helmholtz Institute Jena)
various rooms, please see programme
Helmholtz Institute Jena
Max-Wien-Platz 1
07743 Jena
Peter Michel
(HZDR),
Ties Behnke
(DESY)
Description
The fifth annual meeting of the programme "Matter and Technologies" will take place at Helmholtz Institute Jena from Tuesday, March 5, 2019 to Thursday, March 7, 2019.
The day before the workshop, Monday, March 4, 2019, there will be the opportunity for topical meetings. In addition the students connected to the programme will organize the "Fifth MT student retreat", starting around noon on Monday.
Link to 4th Matter and Technology Meeting photo: https://indico.desy.de/indico/event/19923/material/slides/0.jpg
Meeting Organisation
Participants
220
View full list
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MT organisation: POF IV Proposal planning in topics (restricted attendance) Max-Wien-Platz 1, Seminarraum 1
Max-Wien-Platz 1, Seminarraum 1
Helmholtz Institute Jena
Max-Wien-Platz 1 07743 Jena -
Plenary Session various rooms, please see programme
various rooms, please see programme
Helmholtz Institute Jena
Max-Wien-Platz 1 07743 JenaConvener: Peter Michel (ELBE)-
1
Welcome at Jena/ HIJSpeaker: Thomas Stöhlker (HIJ)
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2
WelcomeSpeaker: Helmut Dosch (DESY)
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1
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15:10
Coffee break HS 1, Max-Wien-Platz 1
HS 1, Max-Wien-Platz 1
Helmholtz Institute Jena
Max-Wien-Platz 1 07743 Jena -
Plenary Session: Plenary Session II various rooms, please see programme
various rooms, please see programme
Helmholtz Institute Jena
Max-Wien-Platz 1 07743 JenaConvener: Anke-Susanne Mueller (KIT)- 7
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Poster Session: Speed Talks various rooms, please see programme
various rooms, please see programme
Helmholtz Institute Jena
Max-Wien-Platz 1 07743 JenaConvener: Ties Behnke (DESY)-
10
Unexpected impact of radiation reaction on laser wake field generationRadiation reaction effect is expected to effectively modify the plasma dynamics at ultra-intense laser intensities (intensity $I \simeq 10^{23}–10^{24}$ W/cm$^2$). We show that enhancement of radiation pressure due to radiation reaction acting in the direction transverse to the laser pulse propagation. This effect is especially pronounced for stronger and longer laser pulses transversing plasma slab of sub-critical density. Under such conditions this mechanism dominates over the ordinary ponderomotive pressure, thus resulting in a substantially stronger charge separation than anticipated previously. We give estimates of the effect and compare them with the results of one and two dimensional particle-in-cell simulations. This effect can be important for laser-based plasma wake acceleration schemes.Speaker: Nina Elkina (HI-Jena)
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11
A Highly Granular SiPM-on-tile Hadron Calorimeter PrototypeThe Analogue Hadron Calorimeter (AHCAL) developed by the CALICE collaboration is a sampling highly granular calorimeter foreseen for a future Linear Collider experiment. It consists of steel absorber plates as absorber material and plastic scintillator tiles readout by silicon photomultipliers (SiPMs) as active material. The front end electronics is integrated into the active layers. In 2017 and 2018 a large prototype, scalable to a full linear collider detector, has been built. It is made of 38 layers, each containing 576 channels, arranged on readout boards and grouped according to the 36 channel readout chips. The prototype has been commissioned at DESY and tested in muons, electrons and pions beam at CERN SPS. In this poster, the prototype design and the test beam activity will be presented.Speaker: Ambra Provenza (Desy)
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A Particle Reduction Tool for Particle-in-Cell Plasma SimulationLarge-scale particle-in-cell plasma simulations on modern supercomputers often involve handling immense amounts of macroparticles, which poses a challenge in terms of computational and memory resources. Furthermore, the amount of macroparticles could grow throughout a simulation due to accounting for such processes as ionization or creation of electron-positron pairs. In such situations, a common approach to alleviate the growth in computational demands is occasionally reducing the amount of simulated macroparticles, while preserving the main physical invariants and representing the same distribution. Particle reduction is also helpful for complex simulation workflows involving chaining several software tools, which might have substantially different requirements. There are several established approaches to performing particle reduction in the context of particle-in-cell simulation, based on subsampling or merging nearby macroparticles. We present a new open scriptable data-centric workflow for performing particle reduction based on the open meta-data standard openPMD. It implements a few established algorithms and provides a numerical evaluation of distortions inflicted on the distribution functions due to particle reduction. We present a computational evaluation of the implemented algorithms on input data of different scales.Speaker: Kseniia Bastrakova (HZDR)
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14
Scaling EUV and X-ray Thomson Sources to Optical Free-Electron Laser Operation with Traveling-Wave Thomson-ScatteringTraveling-Wave Thomson-Scattering (TWTS) is a novel Thomson scattering geometry which allows for orders of magnitude higher photon yields than classic head-on Thomson sources. TWTS thereby remains compact and provides narrowband and ultra-short ultraviolet to γ-ray radiation pulses just as classic Thomson sources. Even the realization of optical free-electron lasers is possible with the TWTS geometry since it provides both optical undulators with thousands of periods needed to microbunch the electron beam and a reduction of electron beam quality requirements compared to classic Thomson scattering to a level technically feasible today. TWTS employs a side-scattering geometry depicted in fig. 1. Laser and electron propagation direction of motion enclose the interaction angle ϕ. Tilting the laser pulse front with respect to the wave front by half the interaction angle ensures continuous overlap of electrons and laser pulse over the whole laser pulse width while the laser pulse crosses the electron beam trajectory. In this way the interaction length becomes controllable by the laser pulse width and independent of the laser pulse duration. Utilizing wide, petawatt class laser pulses for TWTS allows to realize thousands of optical undulator periods. The variability of TWTS with respect to the interaction angle can be used to control the radiation wavelength even for electron sources with fixed energy. For a fixed target wavelength on the other hand, the free choice of interaction angle enables control over electron beam quality requirements. Small interaction angle scenarios (ϕ∼10°) typically yield the best trade-off between requirements on electron beam quality, laser power and laser intensity stability. In the talk we will show that TWTS OFELs emitting extreme ultraviolet radiation are realizable today with existing technology for electron accelerators and laser systems. We detail an experimental setup to generate the tilted TWTS laser pulses which aims at compactness and provides focusing of these high-power pulses and compensation of dispersion accompanying pulse-front tilts. The method presented for dispersion compensation is especially relevant when building high yield X- and γ-ray sources in large interaction angle setups of TWTS.Speakers: Dr Alexander Debus (a.debus@hzdr.de), Klaus Steiniger (Helmholtz-Zentrum Dresden-Rossendorf)
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15
Phonon traps to reduce the quasiparticle density in superconducting circuitsOut of equilibrium quasiparticles (QPs) are a main source of dissipation and noise in superconducting circuits. The generation-recombination processes of QPs link their dynamics to the phonon dynamics of the circuit and substrate ensemble. We demonstrate that surrounding granular aluminum resonators with lower gapped aluminum islands increases the internal quality factors of the resonators in the single photon regime, suppresses the noise, and reduces the rate of observed QP generation events, which we all attribute to phonon trapping.Speaker: Francesco Valenti (KIT)
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Niobium surface investigation for RF cavity applicationsThermal treatments of SRF Nb cavities – including the well-established 120°C bake and the recently reported N-infusion - are shown to improve the cavity performance significantly; however, the underlying physical phenomenon is not fully understood yet. We have chosen a much simpler system of Nb(100) single-crystals heated in different vacuum conditions and nitrogen partial pressures. In-situ X-ray reflectivity and photoelectron spectroscopy measurements were performed to monitor the changes in the elemental species on the surface during thermal treatments. Electron microscopy, x-ray diffraction, energy dispersive X-ray spectroscopy and time-of-flight –secondary ion mass spectroscopy were applied to observe the surface topography, crystallinity and depth profiles of the elements present in the near-surface region. Some samples were treated together with cavities, whose surface properties are also discussed with reference to the cavity-test results.Speaker: Arti Dangwal Pandey (DESY Hamburg)
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The Silicon Tracking System of CBM getting ready for experimentThe Compressed Baryonic Matter (CBM) experiment at the FAIR facility will explore the QCD phase diagram at very high baryon densities, where a first order phase transition from hadronic to partonic matter as well as a chiral phase transition is expected to occur. The Silicon Tracking System is the central detector for charged-particle identification and momentum measurement. It is designed to measure up to 1000 particles in A+A collision rates between 0.1 and 10 MHz, to achieve a momentum resolution in a 1 Tm dipole magnetic field of better than 2%, and to be capable of identifying complex particle decays topologies, e.g., such with strangeness content. The STS employs high-granularity double-sided sensors matching the non-uniform track density and fast self-triggering electronics with a free streaming data acquisition system and online event selection. With the resulting 1.8 million readout channels, it poses the most demanding requirements regarding bandwidth and density of all CBM detectors. The STS functional building block is a module consisting of a sensor, micro-cables and two front-end electronics boards. The modules are mounted on carbon fiber support ladders. The silicon sensors provide double-sided segmentation at a strip pitch of 58 µm and 7.5-degree stereo angle. Ultra-thin micro-cables with up to 50 cm length transfer the sensor signals to the electronics located out of the detector acceptance. The custom-developed read-out ASIC “STS-XYTER” has a self-triggering architecture that delivers time and amplitude information per channel. Towards the phase 0 of the CBM experiment, mini CBM (mCBM), a precursor of the full CBM with detector units from all subsystems, the STS will contribute with two tracking stations consisting of a total of 13 modules. The mCBM will allow to test and optimize the detector performance, including the data acquisition chain under realistic experimental conditions and its integration with the other subsystems. This presentation aims to show an overview of the development status of the module components, readout chain, first test results and system integration in a framework of the mCBM campaign at SIS18 at GSI.Speaker: Adrian Rodriguez Rodriguez (Goethe Universitaet Frankfurt am Main)
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18
Hybrid plasma accelerators - LWFA-PWFA simulations with PIConGPUUtilizing laser-wakefield accelerated (LWFA) electrons to drive a plasma-wakefield accelerator (PWFA) holds great promise for realizing centimeter-scale electron accelerators providing ultra-high brightness beams. Recent experiments at HZDR could demonstrate for the first time such an electron acceleration in a nonlinear PWFA plasma wakefield using this compact setup. On this poster, we show recent results of the accompanying simulation campaign performed with the 3D3V particle-in-cell code PIConGPU. These simulations model the geometry, density distributions, laser modes, and gas dopings as determined in the experiments. The simulation conditions resemble the experiment to a very high degree and thus provide precise comparability between experiment and simulation. Additionally, the wealth of information provided by the in-situ data analysis of PIConGPU provides insight into the plasma dynamic, otherwise inaccessible in experiments. Algorithmic and computational challenges essential for the numerical stability of these long-duration simulations will be presented as well.Speaker: Richard Pausch (HZDR)
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Microwave readout of SQUID multiplexed MMCs: Software-defined radio for the ECHo experimentThe Electron Capture Holmium-163 (ECHo) experiment investigate the electron neutrino mass. It utilizes an array of metallic magnetic calorimeters to acquire a high statistic decay spectrum of Holmium-163. To read out the frequency multiplexed array the KIT - IPE is building a large bandwidth software-defined radio system for ECHo. The basic concept of acquisition and processing will be presented on the poster.Speaker: Nick Karcher (KIT - IPE)
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Achieving highest proton intensities and beam shaping with a laser-driven ion beamlineIn the past two decades, the generation of intense ion beams based on laser-driven sources became an extensively investigated and promising field. The LIGHT collaboration combines a laser-driven proton source with conventional accelerator technology. In this context, a laser-driven multi-MeV ion beamline was realized at the GSI Helmholtzzentrum für Schwerionenforschung. A 100 TW-beam from the local PHELIX laser drives the TNSA source resulting in a exponentially decaying TNSA spectrum. In the second step, protons with an energy of 8 MeV are selected via chromatic focusing with a pulsed high-field solenoid. Afterwards, they are injected into an rf cavity and rotated in phase-space allowing to create energy- or time-compressed particle bunches. Finally, a second solenoid is used for final focusing achieving a focal spot of 1.1 mm x 1.2 mm (FWHM). On this poster, the complete beamline with its focusing capabilities at the interaction point 6 m away from source will be demonstrated.Speaker: Diana Jahn (Technische Universität Darmstadt)
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18:00
Transfer various rooms, please see programme
various rooms, please see programme
Helmholtz Institute Jena
Max-Wien-Platz 1 07743 Jena -
Poster Session: Poster Display with Reception Mensa Philosophenweg, Philosophenweg 20
Mensa Philosophenweg, Philosophenweg 20
Helmholtz Institute Jena
Max-Wien-Platz 1 07743 Jena
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ARD Parallel Session: SubTopics - Status and Outlook PoF IV HS 1, Max-Wien-Platz 1
HS 1, Max-Wien-Platz 1
Helmholtz Institute Jena
Max-Wien-Platz 1 07743 JenaConvener: Jens Osterhoff (DESY)-
21
ST1 – Advanced cw SRF systemsSpeaker: Jens Knobloch (HZB)
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ST3 – Advanced concepts for beam controls, diagnostics and dynamicsSpeaker: Dr Holger Schlarb (DESY)
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ST4 – Novel concepts for ultra-compact accelerators and their applicationSpeaker: Prof. Ulrich Schramm (HZDR)
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21
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DTS parallel session: Convener: Heinz Graafsma HS 4, Helmholtzweg 5
HS 4, Helmholtzweg 5
Helmholtz Institute Jena
Max-Wien-Platz 1 07743 Jena-
31
DTS parallel session: Introduction to the daySpeaker: Marc Weber (KIT)
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High-Z detectorsSpeaker: Dominic Greiffenberg (PSI)
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Discussion
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Discussion
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37
Discussion
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31
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10:30
Coffee break Max-Wien-Platz 1
Max-Wien-Platz 1
Helmholtz Institute Jena
Max-Wien-Platz 1 07743 Jena -
ARD Parallel Session: Scientific Highlights HS 1, Max-Wien-Platz 1
HS 1, Max-Wien-Platz 1
Helmholtz Institute Jena
Max-Wien-Platz 1 07743 JenaConvener: Prof. Andreas Lehrach (Forschungszentrum Jülich, RWTH Aachen University)- 38
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DMA parallel session: DMA ST2 HS 2, Helmholtzweg 5
HS 2, Helmholtzweg 5
Helmholtz Institute Jena
Max-Wien-Platz 1 07743 Jena- 45
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49
How to: One code for CPUs, GPUs & FPGAs with AlpakaSpeaker: Dr Sergei Bastrakov (HZDR)
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50
Discussion Synergies ST2
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DTS parallel session: Convener: Christian Schmidt HS 4, Helmholtzweg 5
HS 4, Helmholtzweg 5
Helmholtz Institute Jena
Max-Wien-Platz 1 07743 Jena- 51
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52
Discussion
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54
Discussion
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56
Discussion
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Discussion
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60
Discussion
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13:00
Lunch Mensa Philosophenweg, Philosophenweg 20
Mensa Philosophenweg, Philosophenweg 20
Helmholtz Institute Jena
Max-Wien-Platz 1 07743 Jena -
ARD Parallel Session: Scientific Highlights HS 1, Max-Wien-Platz 1
HS 1, Max-Wien-Platz 1
Helmholtz Institute Jena
Max-Wien-Platz 1 07743 JenaConvener: Prof. Peter Michel (ELBE)- 61
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62
Contrast Dependence of Laser-Driven Proton AccelerationSpeaker: Sebastian Keppler (GSI / HI Jena)
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DMA parallel session: DMA ST3 HS 2, Helmholtzweg 5
HS 2, Helmholtzweg 5
Helmholtz Institute Jena
Max-Wien-Platz 1 07743 Jena-
67
SFX: Data Explosions at Light SourcesSpeaker: Steve Aplin (DESY)
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Machine learning techniques for measurement prediction at BESSY IISpeaker: Luis Vera Ramirez (HZB)
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Near Real Time Analysis for TomographySpeaker: Nikolay Kardjilov
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72
Discussion Synergies ST3
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67
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DTS parallel session: Convener: Oliver Sander HS 4, Helmholtzweg 5
HS 4, Helmholtzweg 5
Helmholtz Institute Jena
Max-Wien-Platz 1 07743 Jena- 73
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74
Discussion
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Discussion
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Discussion
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Discussion
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82
Discussion
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16:00
Coffee break Max-Wien-Platz 1
Max-Wien-Platz 1
Helmholtz Institute Jena
Max-Wien-Platz 1 07743 Jena -
Plenary Session: Plenary Session III various rooms, please see programme
various rooms, please see programme
Helmholtz Institute Jena
Max-Wien-Platz 1 07743 JenaConvener: Silvia Masciocchi (GSI)-
83
Imaging in 4DSpeaker: Wolfgang zu Castell (HMGU)
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83
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Free Time various rooms, please see programme
various rooms, please see programme
Helmholtz Institute Jena
Max-Wien-Platz 1 07743 Jena -
19:30
MT Conference Dinner Mensa Philosophenweg, Philosophenweg 20
Mensa Philosophenweg, Philosophenweg 20
Helmholtz Institute Jena
Max-Wien-Platz 1 07743 Jena
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Plenary Session: Plenary Session IV various rooms, please see programme
various rooms, please see programme
Helmholtz Institute Jena
Max-Wien-Platz 1 07743 JenaConvener: Thomas Stöhlker (HIJ)- 87
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88
Plasma AccelerationsSpeaker: Wim Leemans (DESY)
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10:30
Coffee break and Conference Photo Max-Wien-Platz 1
Max-Wien-Platz 1
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ARD Parallel Session: Scientific Highlights HS 1, Max-Wien-Platz 1
HS 1, Max-Wien-Platz 1
Helmholtz Institute Jena
Max-Wien-Platz 1 07743 JenaConvener: Dr Holger Schlarb (DESY)- 89
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DMA parallel session: DMA ST1 HS 2, Helmholtzweg 5
HS 2, Helmholtzweg 5
Helmholtz Institute Jena
Max-Wien-Platz 1 07743 Jena- 95
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97
FAIR & Open Data at HZDRSpeaker: Dr Guido Juckeland (Helmholtz-Zentrum Dresden-Rossendorf (HZDR))
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98
Discussion Synergies ST1
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DTS parallel session: Convener: Trixi Wunderer HS 4, Helmholtzweg 5
HS 4, Helmholtzweg 5
Helmholtz Institute Jena
Max-Wien-Platz 1 07743 Jena- 99
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Discussion
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Discussion
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Discussion
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Discussion
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Discussion
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Plenary Session: Closeout Plenary Session various rooms, please see programme
various rooms, please see programme
Helmholtz Institute Jena
Max-Wien-Platz 1 07743 JenaConvener: Friederike Januschek (DESY)- 109
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