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Goulden A.R.

PaperTitlePage
TUP63Initial Experience in Operating the SRF Cryomodules for ERLP280
 
  • S. M. Pattalwar, R. Bate, R. K. Buckley, S. R. Buckley, P. A. Corlett, D. M. Dykes, A. R. Goulden, P. A. McIntosh, A. J. Moss, J. F. Orrett, J. H. P. Rogers
    STFC Daresbury Laboratory
 
 The Energy Recovery Linac Prototype (ERLP) is being commissioned at Daresbury Laboratory (UK) to develop and demonstrate energy recovery to produce IRFEL radiation using SRF technology. The ERLP uses two identical Linac cryomodules, one as a booster cavity accelerating the beam to 8.35 MeV, the other as a linac module in the re-circulating loop with an energy gain of 26.5 MeV. Each module consists of two 9-cell cavities operating at a frequency of 1.3 GHz and at a temperature of 2 K. As there is no energy recovery in the booster it requires a peak power of 52 kW, whereas the linac module only requires 12 kW. The cryomodules are cooled to 2 K by a cryo-system consisting of a 4 K liquefier, 2 K recuperator with a JT valve and external vacuum pumps. In this paper we report our initial experiences in operating the SRF Linacs particularly with cryogenics and RF systems.