Author: Wang, S.
Paper Title Page
MOPC04 Beam Charge Measurement and System Calibration in CSNS 122
  • W.L. Huang, F. Li
    CSNS, Guangdong Province, People's Republic of China
  • L. Ma, S. Wang, T.G. Xu
    IHEP, Beijing, People's Republic of China
  In China Spallation Neutron Source(CSNS), the beam charge monitors along the ring to the target beam transport line(RTBT) and the ring to the dump beam transport line(RDBT), are consisted of an ICT and three FCTs manufactured by Bergoz. The electronics includes a set of NI PXIe-5160 oscilloscope digitizer, and a Beam Charge Monitor(BCM) from Bergoz as supplementary. The beam charge monitors provide the following information: a) the quantity of protons bombarded the tungsten target; b) the efficiency of particle transportation; c) a T0 signal to the detectors and spectrometers of the white neutron source. With the calibration with an octopus 50Ω terminator in lab and an onboard 16-turn calibrating coils at the local control room, corrections for the introducing the 16-turn calibrating coils and the long cable were made. An accuracy of ±2% for the beam charge measurement during the machine operation has been achieved with the ICT/FCTs and a PXIe-5160 oscilloscope digitizer.  
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