PAPER / ARXIV:2609.12233
T. Konomi , T. Xu , Y. Choi , K. Elliott , B. Gower , B. Tousignant , J. Wenstrom , A. Taylor , C. Compton , W. Chang , X. Du , W. Hartung , S. H. Kim , S. Miller , D. Morris , M. Patil , L. Popielarski , J. Wei , Z. Yin , J. Smedley , J. Maniscalco , C. Adolphsen , M. Murphy , D. A. Gonnella , M. P. Kelly , T. Petersen , A. Arnold , S. Gatzmaga , R. Steinbrück , P. Murcek , R. Xiang , J. Teichert , J. Lewellen
RESUMO
A prototype 185.7 MHz superconducting radio-frequency (SRF) electron gun cryomodule has been developed for the proposed LCLS-II-HE Low Emittance Injector at SLAC. It has an in-situ ultra-high-vacuum exchangeable cathode plug system compatible with semiconductor photocathodes. With a copper plug, the gun achieved continuous-wave RF operation at a cathode field of 30 MV/m. No measurable degradation was observed after plug removal and reinsertion with the cavity at 4.4 K. This result is a significant improvement over past continuous-wave SRF gun systems with exchangeable plugs.
NO MESMO MAPA