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Li D.

PaperTitlePage
TUP35Impedance Simulation and Waveguide Damping Study of a Superconducting Deflecting Cavity for ALS at LBNL210
 
  • J. R. Shi, H. B. Chen, C. X. Tang, S. X. Zheng
    Tsinghua University
  • D. Li
    LBNL
 
 Superconducting deflecting cavities are proposed for the generation of sub-pico-second X-ray pulses in storage ring. A 2-cell structure has been simulated to achieve required deflecting voltage and damping waveguide is attached on beam pipe to get low impedance. Detailed simulation notes to calculate longitudinal and transverse impedance in MAFIA and result of different configurations of the damping waveguides are presented. 
WEP33Realisation of a prototype superconducting CW cavity and cryomodule for energy recovery545
 
  • P. A. McIntosh, R. Bate, C. D. Beard, M. Cordwell, D. M. Dykes, S. Pattalwar, J. Strachan, E. Wooldridge
    STFC Daresbury Laboratory
  • S. Belomestnykh, M. Liepe, H. Padamsee
    Cornell University
  • A. Buechner, F. Gabriel, P. Michel
    FZR Rossendorf
  • T. Kimura, T. I. Smith
    Stanford University
  • J. Byrd, J. N. Corlett, D. Li, S. Lidia
    LBNL
 
 For Energy Recovery applications, the requirement for high-Q accelerating structures, operating in CW mode, at large beam currents, with precise phase & amplitude stability and modest accelerating gradients are all fundamental in achieving intense photon fluxes from the synchronised FEL insertion devices. Both Daresbury Laboratory and Cornell University are developing designs for advanced Energy Recovery Linac (ERL) facilities which require accelerating Linacs which meet such demanding criteria. The specification for the main ERL accelerator for both facilities dictates a modest accelerating gradient of 20 MV/m, at a Qo of better than 10^10, with a Qext of up to 10^8. A collaborative R&D program has been set-up to design and fabricate a 'proof-of- principle' cryomodule (which is well underway) that can be tested on ERLP at Daresbury and also on the Cornell ERL injector. This paper details the new cryomodule design, provides an insight to the design solutions employed and reports on the present status of the project.