All electron beamlines of the EU-XFEL were supplied this year. The electron diagnostics supported the commissioning of the last beamline. In this contribution new results of the diagnostics will be shown. In addition recent problems will be discussed.
At Diamond we have been developing the control system for our multi-bunch feedback system for more than a decade, adding increasingly more functionality. Until recently the digital signal processing was limited by our use of the ageing Libera TMBF platform, but starting in 2016 we have been migrating to a platform based on MicroTCA and commercial off the shelf hardware.
The new hardware...
The Karlsruhe Research Accelerator (KARA) as a test facility provides an excellent environment for the development and benchmarking of new diagnostics. Examples of recent developments are the ultra-wideband readout electronics for ps-fast detectors, KAPTURE, and an ultra-fast line-camera with up to 10 Megaframes per second and continuous data streaming for optical and electro-optical bunch...
We are investigating a range of approaches to make Resonant Spin Depolarisaton (RSD) compatible with user beam operation at DLS. To improve the reliability of loss measurements, we depolarise only one half of the bunch train, and use the loss rate in the other half to normalise. We use specifically designed array of four scinitillators placed around the beam pipe after the collimators to...
Soleil is currently working of two new monitors:
- Dose monitors based on RadFET sensors: preliminary tests and developement of dedicated readout electronics will be presented.
- Loss Monitors: preliminary tests with scintillators or cerenkov radiator and calibration results will be presented.
In order to improve coverage of beam loss measurements, we have been investigating the use of a fibre based time of flight measurement.
A prototype system has been installed, with fibres installed across cells one and two, starting just downstream of the injection kicker magnets. The fibres are positioned in the beam plane horizontally, one fibre in board and one out board. Sensors are...
SLS 2.0 is the upgrade project of the Swiss Light Source (SLS) at the Paul Scherrer Institut in Villigen, Switzerland. It aims to reduce the natural emittance by a factor of ~ 40 by replacing the triple bend achromat with a 7-bend achromat structure. The issues of stability and reproducibility of this higher brightness and more coherent photon beam was recently addressed in an internal photon...
A new-concept BPM was developed to prove the usefulness of pilot tone technique in channels equalization, thermal drift compensation and self-calibration.
It ran successfully not only during various machine shifts, but also during a user dedicated beamtime shift for more than 10 hours, behaving in a transparent way for all the control systems and users. The equivalent RMS noise (10 kHz data...
Due to recent unknown noise problems in ALBA beam position, a new python application has been developed in order to catch and track particular frequency components along the runs. Such application takes the BPMs 10kHz data from the Fast Archiver at a given periodicity, analyzes the BPMs spectrum and stores the tracked components into a log file for later off-line analysis. We will present how...
In one of the long straight sections of SOLEIL is installed a pair of canted undulators for the ANATOMIX and NANOSCOPIUM beamlines. Since the upstream undulator radiation can potentially damage the downstram undulator magnets, an accurate survey of the respective alignement of the two devices is mandatory. An XBPM was initially installed for this purpose. But for redundance and further...
Beamline detectors operating in the 100-1000Hz regime are becoming more common, and the X-ray beam stability demanded by beamlines is also thus of comparable bandwidths. In order to maintain the positional stability of a focussed X-ray beam at the beamline sample-point at bandwidths of up to ~500Hz, it is proposed to introduce a feedback system that makes adjustments to the X-ray source point...
One of the frontiers that novel beam diagnostics and readout electronics will explore in the future is bunch-by-bunch information. Both for the electron synchrotrons and for the high repetition rate LINACs, bunch-by-bunch beam information will be useful to better understand and control the machine. As a first step to explore this field, I-Tech prototyped a 500MSps digitizer which features 4...
SESAME is a 2.5 GeV 3rd generation Synchrotron Light Source in Allan, Jordan. The commissioning of the Storage Ring has been done in spring 2017. The storage ring is equipped with 64 BPMs ,3 fluorescent screens, FCT, DCCT, 4 BLMs, 2 Bunch by Bunch kickers and one Synchrotron Radiation Monitor. This talk gives an overview of the Diagnostics elements and our experience during the commissioning....
Fourth generation light sources operate with low emittance to provide more brilliant beams for user experiments. These machines have set the bar for non-invasive transverse beam size measurement on the micron and sub-micron scales. It has been identified within the community that this spatial resolution is at the limit of most diagnostic instrumentation, and systems which more closely resemble...
Beam halo induced by space charge force and scattering of trapped ions is one of the critical issues for linac based high power machines such as bERLinPro. In order to suppress uncontrolled beam losses, the coronagraph based halo monitor was designed and optimized to measure the beam halo which has ∼ 10^−4 contrast to the beam core. The beam test was performed in BESSY-II. In this...
