Keyword: SNR
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MOPF06 Beam Profile Monitors at REGAE electron, diagnostics, photon, optics 212
 
  • H. Delsim-Hashemi, K. Flöttmann
    DESY, Hamburg, Germany
  • S. Bayesteh
    Uni HH, Hamburg, Germany
 
  A new linac is commissioned at DESY mainly as the electron source for femtosecond electron diffraction facility REGAE (Relativistic Electron Gun for Atomic Exploration). REGAE enables studies on structural dynamics of atomic transition states occurring in the sub-hundred femtosecond time-scale. REGAE comprises a photo-cathode gun followed by normal conducting 1.5 cell rf-cavity to provide sub pC electron-bunches of 2-5 MeV with a coherence length of 30nm. In order to produce and maintain such electron bunches, sophisticated single-shot diagnostics are desired e.g. emittance, energy, energy-spread and bunch-length measurement. REGAE rep-rate can be up to 50 Hz. This relatively high rep-rate makes it more challenging to deal with low intensity detection especially in single-shot mode. In this contribution the conceptual ideas, realization and results of transversal diagnostics will be presented.  
 
TUPC35 Upgrade of the Read-out Electronics for the Energy Beam Position Monitors at FLASH and European XFEL pick-up, XFEL, beam-position, DESY 454
 
  • U. Mavrič, C. Gerth, H. Schlarb
    DESY, Hamburg, Germany
  • A. Piotrowski
    TUL-DMCS, Łódź, Poland
 
  The dispersive sections of magnetic bunch compressor chicanes at free-electron lasers are excellent candidates for beam energy measurements. In the rectangular beamline sections of the bunch compressors at FLASH, energy beam position monitors (EBPM) with transversely mounted stripline pickups are installed. In this paper, we present the upgrade of the read-out electronics for signal detection of the EBPM installed at FLASH. The system is based on the MTCA.4 standard and reuses already available MTCA.4 compliant modules. This is also true for gateware and software development which fits into standard MTCA.4 framework development. The performance of the instrument was studied at FLASH during user operation and the results are presented.  
 
TUPF25 Beam Current Measurement System in CSNS LINAC linac, beam-transport, vacuum, instrumentation 565
 
  • P. Li, F. Li, M. Meng, T.G. Xu
    IHEP, Beijing, People's Republic of China
 
  The China Spallation Neutron Source is being constructed at Dongguan, Guangdogn province. Before RCS Ring there are three beam transport sections in CSNS LINAC : LEBT, MEBT, LRBT, where various beam measurement monitors will be installed. Beam Current Transformers (BCTs) have been designed to measure beam macro-pulse current that will operate between 5mA to 80mA . The BCTs have the same inductance but different size in these three sections. Besides, beam parameters should be monitored also between the DTL four parts. There is no BCT but a FCT would be installed after DTL1 due to space limit. So this FCT is planned to measure the macro-pulse current, and we have to proceed the acquired data to show the original macro-pulse waveform due to the FCT’s low inductance.  
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