Conveners
Session 2: Beam Diagnostics: Talks
- Pavel Evtushenko (HZDR / ELBE)
Session 2: Beam Diagnostics: Speed Talks
- Peter Forck (GSI)
Session 2: Beam Diagnostics: Posters
- Peter Forck (GSI)
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...
The WAVE initiative investigates and designs a seismic and geo-acoustic measurement network in and around and around the Science City Hamburg Bahrenfeld. WAVE is a unique and innovative infrastructure for geophysics, physics and especially for large-scale research facilities.
A key element of WAVE is the widespread use of modern seismic sensors, in particular distributed acoustic sensing...
Synchrotron light sources operate with bunch repetition rates in the MHz regime. The longitudinal and transverse beam dynamics of these electron bunches can be investigated and characterized by experiments employing linear array detectors. To improve the performance of modern beam diagnostics and overcome the limitations of commercially available detectors, we have developed KALYPSO, a...
Electron bunches with charges in the order of 10 fC can be produced at the ARES linac and are used for experiments with medical applications or studies of novel acceleration techniques. To characterize such bunches, sufficient sensitivity of the diagnostics devices is required. The STRIDENAS beam profile monitor is designed to measure such sub-10 fC charge beams. The device is based on silicon...
The ARES linear accelerator at DESY aims to deliver stable and well-characterized electron bunches with durations down to the sub-fs level. Such bunches are well suited to study the injection into novel high-gradient acceleration structures or to test diagnostics devices. For such applications, it is advantageous to have full and detailed knowledge of the beam properties. Tomographic methods...
Electro-optical (EO) methods are well-proven diagnostic tools, which are utilized to detect THz fields in countless experiments. The world’s first near-field EO sampling monitor at an electron storage ring was developed and installed at the KIT storage ring KARA (Karlsruhe Research Accelerator) and optimized to detect longitudinal bunch profiles. This experiment with other diagnostic...
The Karlsruhe Research Accelerator (KARA) at KIT features an electro-optical (EO) near-field diagnostics setup to conduct turn-by-turn longitudinal bunch profile measurements in the storage ring using electro-optical spectral decoding (EOSD). Within the Future Circular Collider Innovation Study (FCCIS) an EO monitor using the same technique is being conceived to measure the longitudinal...
The broadband and single-shot spectrometer CRISP detects coherent diffraction radiation at European XFEL in the infrared and THz regime for current profile measurements. The noninvasive radiation source and the MHz capability of spectrometer allows an individual characterization of all bunches of the European XFEL bunch train. This poster presents the working principle of the spectrometer, the...
Coherent synchrotron radiation (CSR) is emitted when the emitting structure is equal to or smaller than the observed wavelength. Consequently, these pulses are very short and most detectors respond with their impulse response, regardless of the pulse length and shape. Here we present single-shot measurements performed at the Karlsruhe Research Accelerator (KARA) using a fast real-time...
The hardware deployed by the Machine Beam Control group (MSK) at the European XFEL is used in critical operation systems. This includes low-level RF control, special diagnostics and time synchronization, making the devices highly dependable. At the same time, this hardware operates under harsh environmental conditions, potentially causing degradation and failures of the board components in the...
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 realize self-learning control policies by interacting with the accelerator is...
At the KARA accelerator, after the electron bunches are per-accelerated by a 3 GHz microtron, a booster synchrotron operating at 500 MHz is used to increase the energy of the electrons from 50 MeV to 500 MeV, before they are injected into the storage ring. Due to various effects, the injection efficiency from to the ring is rather low. To investigate these inefficiencies and remedy them, fast...
FLASHlab@PITZ is an R&D platform for electron FLASH and very high energy electron radiation therapy and radiation biology, under preparation at the Photo Injector Test facility at DESY in Zeuthen (PITZ).
The available beam parameters are unique: ps scale electron bunches with up to 5 nC bunch charge at MHz repetition rate in bunch trains of up to 1 ms in length, currently 22 MeV (upgrade to...
The Photo Injector Test Facility at DESY in Zeuthen (PITZ) optimises electron sources for their use at the free-electron lasers FLASH and European XFEL in Hamburg. Non-linear space charge forces after emission lead to an increase of the transverse (slice) emittance. Photocathode laser pulse shaping allows to alter the space charge forces. This contribution shows a method to measure the slice...
The time arrival stability of the electrons is as good as 5-10 fs rms, but the arrival time of the optical lasers is on the order of 10 fs rms after correction. Here will be presented a laser arrival time monitor: the arrival time of the optical pulses will be measured against a reference from a length-stabilized fiber. With a measurement as close as possible to the interaction point,...
