The Laser Und XFEL Experiment (short LUXE) based at DESY, Hamburg is a
planned experiment to study nonlinearity effects in the strong-field QED regime with high precision.
In order to create electric fields stronger than the so-called Schwinger limit, it is planned to collide a high-intensity laser pulse with either high-energy electrons up to 16.5 GeV or high-energy photons.
As a...
Neutrons are an essential tool for studying the structure and dynamics of matter from the mesoscale to the picoscale and from seconds to femtoseconds. The High Brilliance neutron Source (HBS) project aims to develop a High-Current Accelerator-driven Neutron Source (HiCANS) that will provide neutron fluxes to corresponding instruments comparable to current fission-based research reactors and...
Modern semiconductor radiation detectors are highly optimized and complex devices, and precise modelling of their performance is crucial to the scientific interpretation of measurements. Allpix Squared provides an advanced solution for end-to-end Monte Carlo simulation of such detectors, comprising every step from incident radiation to processed detector data. The comprehensive documentation...
ANDESPix is a digital silicon photomultiplier (SiPM) designed to readout scintillating fibers with low light intensity, as part of a muon counter. Thereby, photons should be detected with very high time resolution (<100 ps) in order to identify impinging muons and their time of arrival (ToA) on the muon counters.
In contrary to a standard analog SiPM, in ANDESPix each single photon avalanche...
Three families of sextupole magnets have been recently incorporated at the KIT storage ring KARA (Karlsruhe Research Accelerator). Computer studies of beam dynamics were performed with an objective to estimate benefits of operation with three sextupole families. An objective of simulations was to estimate merit of new configuration of ring lattice and possibility to control slope of momentum...
Standard atomic physics models in PIC simulation either neglect excited states, predict atomic state population in post processing only, or assume quasi-thermal plasma conditions.
This is no longer sufficient for high-intensity short-pulse laser generated plasmas, due to their non-equilibrium, transient and non-thermal plasma conditions, which are now becoming accessible in XFEL experiments...
In recent work, it has been shown that reinforcement learning (RL) is capable of outperforming existing methods on accelerator tuning tasks. However, RL algorithms are difficult and time-consuming to train, and currently need to be retrained for every single task. This makes fast deployment in operation difficult and hinders collaborative efforts in this research area. At the same time, modern...
At the Ferninfrarot Linac- Und Test-Experiment (FLUTE) at the Karlsruhe Institute of Technology (KIT) a new and compact method for longitudinal diagnostics of ultrashort electron bunches is being developed. For this technique, which is based on THz streaking, strong electromagnetic pulses with frequencies around 240 GHz are required. Therefore, a setup for laser-generated THz radiation using...
In this contribution, we present a unique development of compact,
sustainable, and efficient superconducting undulators based on laser-scribed high-temperature superconducting (HTS) tapes.
AiiDA is an open-source Python infrastructure for devising complex workflows associated with modern computational science and streamlining the four core pillars of the ADES model: Automation, Data, Environment, and Sharing. In this contribution, we showcase features of AiiDA like workflow-forging, high-throughput capability and data provenance as implemented in the AiiDA-FLEUR plugin. Finally,...
A modern X-ray sources are being upgraded - along with synchrotron rings which are being upgraded to become diffraction limited a high-brilliance FELs are also concerning changing the pulsed operation mode up to Continuous Wave (CW) operation. A common need emerges for detectors able to operate continuously at high rates, while having a high dynamic range and single photon sensitivity. The...
Non-destructive, absolute, DC measurement of small beam currents is the domain of superconducting CCCs.
In this presentation, the three present places of activity are discussed, CERN-AD, FAIR, and the basic research in the area Jena.
The latest laboratory results of smaller CCCs are presented: Single pulse resolutions below 1 nApp, a white noise currnet density of 1 pArms/sqrt(Hz) and a...
The Einstein Telescope (ET) is the European third-generation gravitational-wave observatory currently under development. It includes a low-frequency (LF) and a high-frequency laser interferometer. In comparison to existing detectors, sensitivity improvements of several orders of magnitude are foreseen. Cryogenic operation of ET-LF is imperative for exploiting the full scientific potential of...
Cryogenic surfaces in UHV enviroments add a massive pumping speed, due to their high sticking probability. The usual probelm with cold head cooled surfaces in UHV-chambers is, that the cold head can not be baked. A device has been developped, which allows to remove the cold head from the vacuum system, without breaking the vacuum to allow for bakeout. Such, cold head cooled surfaces can be...
The PANDA (antiProton ANnihilation at DArmstadt) experiment will study the strong interaction in annihilation reactions between an antiproton beam and a stationary cluster jet target. The detector will comprise of different sub-detectors for tracking, particle identification and calorimetry. The Micro-Vertex Detector (MVD) is the innermost part of the tracking system and is designed for...
Particle-in-Cell simulations are a ubiquitous tool for linking theory and experimental data in plasma physics rendering the comprehension of non-linear processes such as Laser Plasma Acceleration (LPA) feasible. These numerical codes can be considered as state-of-the-art approach for studying the underlying physical processes in high temporal and spatial resolution. The analysis of experiments...
At the KIT storage ring KARA (Karlsruhe Research Accelerator), two electro-optical (EO) diagnostical setups are implemented: An EO near-field monitor within the beam pipe in vacuum as a tool for longitudinal bunch profile measurements and an EO far-field setup to measure the temporal profile of the coherent synchrotron radiation (CSR).
The EO near-field monitor performs very well in...
A great challenge of experiment documentation is to collect metadata from many different sources. Automation can help to save time and reduce errors, which highly depends on the infrastructure landscape of the research center. The lab documentation tool can play a central role in connecting metadata sources. It can decrease duplicated entries, improves the completeness, saves time in the long...
uture particle accelerators will challenge the capabilities of current control systems. One of the possible solutions is the use of Machine Learning techniques. While several algorithms have already been implemented and are in current operation, some specific problems will require novel hardware systems in order to satisfy throughput and latency constraints.
In this study, we employ the...
This contribution describes the KIT's R&D towards small-scale, strong, efficient beam transport and undulator magnets for compact light sources employing HTS technology.
The poster presents an overview of the R&D work on MAP sensors within
the ALICE group at GSI/Heidelberg. Detailed simulations of in-pixel charge behavoir are utilized to improve detector resolution.
Bent ALPIDE sensors were used to prove the feasibility to realize cylindrical layers for vertex detectors,
and flat sensors are employed in a general-purpose beam test telescope.
The novel CMOS...
The Adaptive-Gain Integrating Pixel Detector (AGIPD), a megahertz frame-rate, high-dynamic range integrating pixel detector, was developed for photon science experiments at the European X-Ray Free Electron Laser (European XFEL) and tailored to its unique specifications. Two 1-Megapixel AGIPD detector systems have been installed at the European XFEL and are producing numerous scientific...
The Open Standard for Particle-Mesh Data (openPMD) is a F.A.I.R. metadata standard for tabular (particle/dataframe) and structured mesh data in science and engineering.
The poster shows the basic components of openPMD, its extensions to specific domains, applications from laser-plasma physics, particle accelerators, material physics to imaging and the ability to bridge multiple heterogeneous...
In the wake of the energy transition, the transport of large amounts of electrical energy in densely populated areas but also over long distances is a topic of concern. To achieve this, superconducting power cables are a suitable option. For economical and energy-efficient operation below the transition temperature (well below 100 K), refrigeration systems are required, which have a...
The combination of a compact storage ring and a laser-plasma accelerator (LPA) can serve as the basis for future compact light sources. One challenge is the large momentum spread (about 2 %) of the electron beams delivered by the LPA. To overcome this challenge, a very large acceptance compact storage ring (VLA-cSR) was designed as part of the compact STorage ring for Accelerator Research and...
We report on electron beam collimation using a passive plasma lens, integrated directly and conveniently into a laser wakefield accelerator stage operating in the high charge regime. The lens is created by reshaping the gas density profile of a super-sonic jet at the beam’s exit side through an obstacle mounted above the jet. It reduces the beam’s divergence by a factor of two to below 1 mrad...
Arrays of superconducting sensors enable particle spectrum analysis with superior energy resolution. To efficiently acquire data from these sensors, the readout electronics operating at room temperature must perform multiple tasks, such as real-time frequency demodulation. We designed a Software-Defined Radio (SDR) system composed of an MPSoC board, an analog-to-digital conversion stage, and a...
Serial crystallography experiments at synchrotron and X-ray Free Electron Laser (XFEL) sources produce large datasets, consisting of multi-megapixel images acquired at a high frame rate with detectors such as AGIPD. However, only a small percentage of the images are useful for downstream analysis, because most X-ray pulses miss the target (protein nanocrystals in a liquid jet). Our goal is to...
Recent advances in the development of cryogenic particle detectors, such as magnetic microcalorimeters (MMCs), allow the fabrication of sensor arrays with an increasing number of pixels. One use-case, the ECHo-100k experiment with 10,000 MMCs, promises high sensitivity of the electron neutrino mass through calorimetric decay spectroscopy of ¹⁶³Ho.
A room-temperature system targeting readout...
In the KIT storage ring KARA (KArlsruhe Research Accelerator), two parallel plates with periodic rectangular corrugations are planned to be installed in a dedicated part of the vacuum chamber. These plates will be used for impedance manipulation to study and eventually control the beam dynamics and the emitted coherent synchrotron radiation (CSR). In this contribution, we present simulation...
The FAIR complex at the GSI Helmholtzzentrum will generate heavy ion beams of ultimate intensities of 5$\cdot$10$^{11}$ U$^{28+}$ particles per pulse. To achieve this goal, low charge states have to be used. This avoids stripping losses and the space charge limit is shifted to higher number of particles. However, the probability for charge exchange in collision with residual gas particles of...
Laser wakefield accelerators (LWFA) feature unique electron bunch characteristics, namely micrometer beam size with duration ranging from a few fs to tens of fs. The longitudinal profile of such ultra-short electron bunches intricately depends on the ultrafast injection dynamics and laser-electron beam interaction during acceleration. Detailed knowledge of the electron bunch temporal profile...
In preparation for the High-Luminosity upgrade of the LHC, plenty of custom ATCA electronics boards are being designed. Many of them will have a heterogeneous System-on-Chip from the AMD Xilinx Zynq UltraScale+ (ZUS+) family on board. In large systems with hundreds of these devices, it is a significant challenge to keep the software on them up-to-date and in a uniform state. For PCs, network...
Nb3Sn thin films are mainly used on superconducting radio frequency (SRF) cavities, single-photon detectors and RF logic circuits. Copper-based Nb3Sn thin-film SRF (TFSRF) cavities are promising for particle accelerators because they may combine the advantages of high thermal conductivity and high gradient. In this poster, a bronze method, including multi-layer deposition and heat treatment,...
The KIT has a long-standing cooperation with Bilfinger Noell on superconducting insertion devices, which, by exploiting synergies and strengthening technology transfer, facilitates the development of world-leading commercial products.
We present an overview of the achievements of this successful collaboration.
The poster provides an overview of the ongoing R&D activities within the ALICE ITS3 project, with respect to testing the response of curved 50um-thick ALPIDE sensors.
Results show that sensors bent to the innermost targeted radius of 18mm exhibit no signs of mechanical damage and retain their full electrical functionality. Moreover, they demonstrate the same efficiency and noise-free...
Accelerator technology relies on superconducting magnets at cryogenic temperatures. Current leads connect-ing those magnets with their power sources at room temperature significantly contribute to the heat load on cryogenic systems due to the ohmic losses occurring in the temperature range above the transition tempera-ture. The thermodynamic optimization of current leads requires cooling along...
It has been demonstrated that a series of bunch profile density measurements made with an EO crystal can be used to reconstruct the charge density or phase space. However, this method does not take into account the time-dependent variability of the charge density when coherent radiation occurs. The method presented in this work incorporates the dynamic of the charge density given by the...
We present time-resolved measurements of the energy spread in KARA. The measurements were performed, utilizing a high speed line camera to measure the horizontal bunch size in a dispersive section on a turn-by-turn basis.
Due to the newly developed Ti_LGAD sensor we were able to resolve bunch charges down to ~2pC.
In order to achieve better control over the phase space of electron beams in linear accelerators, the laser pulse of the
photoinjector can be shaped by spatial light modulators (SLMs). Here, we use a deep convolutional neural network to
map a camera image of the Ti:Sa-800-nm photoinjector laser spot at the Ferinfrarot Linac- und Test-Experiment (FLUTE)
at KIT to a superposition of Zernike...
The next-generation continuous-wave accelerators demand high-brightness and high-average current beam sources. The superconducting radio-frequency photoelectron injector (SRF gun) is a promising candidate, and its development is being carried out actively at different research institutes worldwide. So far, nearly all the tested SRF guns have fallen short of their designed gradient, primarily...
