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Decker, G.

Paper Title Page
MOPD16 Comparative Studies of RF Beam Position Monitor Technologies for NSLS II 80
 
  • O. Singh, I. Pinayev
    BNL, Upton, Long Island, New York
  • G. Decker, B.X. Yang
    ANL, Argonne, Illinois
  
 

Sub-micron beam stability is a necessary performance requirement for the NSLS II light source, a substantial challenge testing the limits for presently available RF beam position monitoring methods. Direct performance comparisons between commercially available bpms and Advanced Photon Source in-house developed bpm were made at the APS Storage Ring. Noise floor, fill pattern dependence, and intensity dependence were investigated and correlated with photon diagnostics at the beam diagnostic beamline at APS sector 35. Key results will be presented.

  
MOPD41 Impact of Environmental Variability on Vibrating Wire Monitor Operation 131
 
  • S.G. Arutunian, M.M. Davtyan, I.E. Vasiniuk
    YerPhI, Yerevan
  • J.F. Bergoz
    BERGOZ Instrumentation, Saint Genis Pouilly
  • G. Decker
    ANL, Argonne, Illinois
  • G.S. Harutyunyan
    YSU, Yerevan
  
 

The Vibrating Wire Monitor (VWM) was developed for precise transversal profiling/monitoring of charged particle/photon beams. The extremely high sensitivity of VWM is achieved by sensitivity of wire natural oscillation frequency to wire temperature. Due to the rigidity of the wire support structure, the VWM is also sensitive to the environmental parameters. In this paper, it is shown that the main parameter of influence is the ambient temperature. The magnitude and character of this influence is investigated along with the effect of electromagnetic interference on the VWM electronics in an accelerator environment.