JACoW is a publisher in Geneva, Switzerland that publishes the proceedings of accelerator conferences held around the world by an international collaboration of editors.
TY - UNPB AU - Giaccone, B. ED - Biedron, Sandra ED - Simakov, Evgenya ED - Milton, Stephen ED - Anisimov, Petr M. ED - Schaa, Volker R.W. TI - LCLS-II HE vCM Test Results: Newly Developed N-Doping Treatment and Plasma Processing J2 - Proc. of NAPAC2022, Albuquerque, NM, USA, 07-12 August 2022 CY - Albuquerque, NM, USA T2 - International Particle Accelerator Conference T3 - 5 LA - english AB - This talk presents the results of the LCLS-II HE verification cryomodule (vCM), which aimed at verifing that the cryomodule is capable to meet the project specification (Q₀=2.7·10¹⁰ at 21 MV/m) with the newly developed nitrogen doping treatment. The test also carried out detailed studies on multipacting processing optimization and Q-factor quench degradation. Plasma processing was also carried out in four out of eight cavities in the cryomodule, showing its effectiveness in eliminating multipacting. These studies will be discussed. PB - JACoW Publishing CP - Geneva, Switzerland ER -