The Photo Injector Test facility at DESY in Zeuthen (PITZ) focuses on the development of high brightness electron sources for Free Electron Lasers (FELs) as well as on the applications of high brightness electron beams. In this talk, we will introduce the PITZ facility with its wide spectrum of beam parameters and its advanced diagnostics capabilities. The latest results of all three research...
The EIC-Pathfinder project TWAC (Terahertz Wave Accelerating Cavity) aims to build a prototype accelerator demonstrating the feasibility of a compact machine based on THz-driven accelerating structures for the purpose of research, medical and industrial applications. The prototype should deliver low-energy, ultrashort and high peak current electron bunches (~10 MeV, femtosecond scale and ~1...
In an ongoing quest to improve beam instrumentation, an update of the established electro-optical bunch arrival-time monitors (EO-BAM) is intended to achieve a sensitivity that enables stable operation of X-ray free-electron lasers with bunches down to a minimum charge of 1 pC or significantly increase the resolution of single-shot measurements in normal operation. In a joint project, the...
Due to the space-charge dominated nature of the electron beams at high brightness photoinjectors, a slit scan technique is utilized as a standard tool for quantifying horizontal and vertical emittance and reconstructing corresponding phase spaces. A novel method for 4-dimensional transverse phase space diagnostics is proposed at the Photo Injector Test facility at DESY in Zeuthen (PITZ), the...
This work will show the latest generation of the DESY MicroTCA cards developed for high-performance processing, low-latency high-frequency digitizer, artificial intelligence and machine learning platforms based on the GPU carrier and the motion control application.
This work will show the recent developments of the DESY DAMC-DS5014DR MicroTCA card. The core of the DAMC-DS5014DR is the Xilinx Zynq UltraScale RFSoC Gen. 3. It consists of eight 14-bit, 5-GSPS RF-ADCs, eight 14-bit, 10-GSPS RF-DACs, programmable logic (PL) and processing system (PS). The RF-ADCs convert the wideband analog pulses directly to the digital. DAMC-DS5014DR has a PCIe Gen. 3 x4...
The Cryogenic Current Comparator (CCC) is a superconducting device based on an ultrasensitive SQUID magnetometer (fT range). Measuring the beam’s azimuthal magnetic field, it provides a calibrated non-destructive measurement of beam current with a resolution of 10 nA or better, independent from ion species and without tedious calibrations procedure. The non-interceptive absolute intensity...
Over the past years Electro-optical (EO) crystal-based mixing techniques are gaining interest to characterize electric fields of THz waveforms with high temporal resolution, single-shot capability and high data rate acquisition.
Those EO-techniques are equally suited for various THz sources, utilising either directly the electron bunch coulomb field for bunch length monitoring, or for...
Longitudinal bunch shape and mean energy of high-intensity heavy ion beams accelerated at the GSI UNILAC up to 11.4 MeV/u may differ from macro-pulse to macro-pulse and even within a single macro-pulse. Fast Faraday Cups (FFC) are able to measure these changes with high precision. A study on different FFCs has been performed and showed very promising results for a radially coupled FFC (RCFFC)....
The Karlsruhe Research Accelerator (KARA) is an electron storage ring for accelerator research and the synchrotron of the KIT light source at the Karlsruhe Institute of Technology (KIT). KARA features an electro-optical (EO) in-vacuum bunch profile monitor to measure the longitudinal bunch profile in single shot on a turn-by-turn basis using electro-optical spectral decoding (EOSD). A...
Terahertz (THz) radiation sources based on accelerators provide new fields of study for physical matter research and applications. The generated THz spectrum, its pulse shape and the arrival time of the pulse are of key importance for such experiments. Among available detector technologies, high electron mobility field effect transistors (HEMTs) based on Gallium arsenide (GaAs) are ideal...
Co-authors:
Julien Branlard, Krzysztof Czuba, Marie Kristin Czwalinna, Bartosz Gasowski, Thorsten Lamb, Heinz Pryschelski, Holger Schlarb, Maximilian Schuette
Today's high-precision accelerators with arrival time stabilities in the sub-fs range require a very low-noise and long-term stable source as the main oscillator. Due to the different locking bandwidths of the various subsystems,...
Improving the temporal structure of slowly extracted beams (spills) is a key challenge for efficient beam operation at the SIS18 synchrotron of GSI.
This contribution focusses on the recently developed spill optimization system implemented with software-defined radio (SDR) technology. It comprises a feedback system to control the spill rate and an optimization algorithm to automatically...
This poster reports on the improvements in the ChimeraTK frameworks since last year's ARD ST3 workshop.
We will present the new Tango support feature, which completes the set of mainstream control system middleware supported by ApplicationCore-based device servers.
Integrating our software stack into the Yocto embedded Linux ecosystem enables us to run directly on SoCs with current and...
Motivated by the overarching goal of designing a unifying controller for continuous wave operation that integrates piezo and RF control for stabilizing amplitude and phase of a cavity field with active microphonics suppression , we conducted measurements on a cryo module with piezo signal as input and cavity gradient as output to establish a linear model that could be used for model-based...
FLUTE (Ferninfrarot Linac Und Test Experiment) is a new compact versatile linear accelerator at KIT. Its main goal is to serve as a platform for a variety of accelerator studies as well as a generation of strong ultra-short THz pulses for photon science. Also it will be used as an injector for a Very Large Acceptance compact Storage Ring (VLA-cSR) which will be realized at KIT in the framework...
The Turkish Accelerator and Radiation Laboratory in Ankara (TARLA) is Turkeys first particle accelerator research facility. DESY provides TARLA with a MicroTCA.4-based LLRF control system. This system was assembled and tested at DESY and shipped to TARLA. It was commissioned earlier this year and saw first beam. Find in this contribution a more detailed description of the LLRF system as well...
Many components, including software/hardware CPUs, hardware description language (HDL) modules, high-level synthesis (HLS) entities, and embedded Linux / bare-metal applications, are used in the development of modern FPGA firmware. This is due to the usage of custom modules, tools from various vendors, and hierarchical designs from various manufacturers. The mentioned process is initially...
Future high duty cycle operation scenarios of the European X-ray Free Electron Laser (EuXFEL) promise increased bunch repetition rate and photon delivery, at the cost of changing system requirements and moving away from the proven mode of short pulse operation. To assess the applicability of the currently installed 3rd harmonic cryomodule, key parameters of its spare sibling installed at the...
While the arrival time stability of electron bunches in a free-electron laser (FEL) can be as precise as 5 fs rms, the arrival time jitter of optical laser pulses is around 10 fs rms or worse at the experimental setups. In this contribution, we will provide an update on a laser pulse arrival time monitor, where the arrival time of optical pulses will be measured against an optical reference...
Precisely calibrating RF superconducting radio-frequency linear accelerators is crucial for accurately assessing cavity bandwidth and detuning, which provides valuable insights into cavity performance, facilitates optimal accelerator operation, and enables effective fault detection and diagnosis. In practice, however, calibration of RF signals can present several challenges, with calibration...
Machine learning has emerged as a powerful solution to the modern challenges in accelerator physics. However, the limited availability of beam time and the high computational cost of simulation codes pose significant hurdles in generating the necessary data for training state-of-the-art machine learning models. Furthermore, optimisation methods can be used to tune accelerators and perform...
The Photo Injector Test Facility at DESY in Zeuthen (PITZ) develops and optimizes high-brightness electron sources for modern Free Electron Lasers (FELs), like the European XFEL. PITZ’s goal is to generate intense electron beams having small transverse emittance to achieve optimum FEL performance. ASTRA simulations have been used as a tool to study the optimal parameters at PITZ for the...
PETRA IV, a low emittance fourth generation light source is the upcoming flagship project of DESY. Stringent stability of the electron beam orbit in the ring will be required to achieve a diffraction limited photon beam quality. A fast orbit feedback system is being modelling and designed. One important aspect is the disturbance modelling. Preliminary ideas for correlation lengths of ground...
