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Douglas, D.

 
Paper Title Page
WG213 Electron Beam Diagnostics for Energy Recovery Linacs  
 
  • K. Jordan, S. V. Benson, D. Douglas, P. Evtushenko, C. Hernandez-Garcia
    Jefferson Lab, Newport News, Virginia
 
  Funding: This work was supported by U. S. DOE Contract No. DE-AC05-84-ER40150, Office of Naval Research, Air Force Research Laboratory, Army Night Vision Laboratory, and the Commonwealth of Virginia

This paper describes the diagnostic requirements for Energy Recovery Linac Light Sources. It specifically addresses the different needs of the injector and the linac. A pulse picking scheme is suggested for the injector. This would pluck out a few 10s of nanoseconds of beam at rates from 10 Hz to 0.1 Hz and send them to a dedicated destructive diagnostics line. In the injector it is not practical to use Optical Transition Radiation (OTR) as a diagnostic since energies are typically <10 MeV so phosphor screens are recommended. Streak cameras work well as a longitudinal diagnostic where bunch lengths are >1 psec where transverse kicker cavities should be employed when the bunch length is much shorter. It also addresses the need to shield the insertion devices to minimize the shunt impedance of the beam line.

 
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