Keyword: shielding
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TUTUB1 Managing Electromagnetic Interference in Large Instrumentation Environments instrumentation, coupling, impedance, network 224
 
  • M.E. Gruchalla
    URS, Albuquerque, New Mexico, USA
  • M. Thuot
    LANL, Los Alamos, New Mexico, USA
 
  Funding: Work supported by the US Department of Energy
Implementing high-quality measurement systems in large test environments presents a number of unique challenges. And, these challenges are made even more interesting where new instrumentation systems are being implemented in existing legacy environments where there is little opportunity to modify the infrastructure. Often, Electromagnetic Interference (EMI) is encountered. This interference may be simply an annoyance were sufficiently low that data integrity is not severely compromised, but in many cases, perhaps most, EMI is so severe as to totally obscure the signals of interest. Various sources of EMI and common points of entry of are reviewed. Means of mitigation of EMI in the design and implementation of instrumentation systems in legacy environments are presented. Common sources of EMI potentially introduced by the instrumentation systems themselves are examined, and means of design to mitigate such self-induce interference are examined. Real-life examples are provided to demonstrate the EMI issues, and the affect of mitigation. It’s all about the current – pretty much!
 
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WEPF03 Upgrade of the Fast Beam Intensity Measurement System for the CERN PS Complex controls, proton, vacuum, synchrotron 525
 
  • D. Belohrad, J.C.A. Allica, M. Andersen, W. Andreazza, G. Favre, N. Favre, L.K. Jensen, L. Lenardon, W. Vollenberg
    CERN, Geneva, Switzerland
 
  The CERN Proton Synchrotron complex (CPS) has been operational for over 50 years. During this time the Fast Beam Current Transformers (FBCTs) have only been repaired when they ceased to function, or individually modified to cope with new requests. This strategy resulted in a large variation of designs, making their maintenance difficult and limiting the precision with which comparisons could be made between transformers for the measurement of beam intensity transmission. During the first long shut-down of the CERN LHC and its injectors (LS1) these systems have undergone a major consolidation, with detectors and acquisition electronics upgraded to provide a uniform measurement system throughout the PS complex. This paper discusses the solutions used and analyses the first beam measurement results.  
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