Performance of the First LCLS-II Cryomodules: Issues and Solutions

Nikolay Solyak , E. Cullerton , Joshua Einstein-Curtis , Elvin Harms , Brian Hartsell , Jeremiah Holzbauer , Timergali Khabiboulline , Andrei Lunin , Olivier Napoly (1) , Yuriy Pischalnikov , Richard Stanek , Genfa Wu

1 IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers

LCLS-II 4 GeV linac is on the middle production stage. Linac contains 40 cryomodules of 1.3 GHz and 3 cryomodules of 3.9 GHz, including spares. Fermilab and JLAB share responsibility for cryomodule design, assembly and test. Paper will overview the performance of the cryomodules it the tests, lessons learned and modifications in design to improve performance.

Mots clés: cavity; cryomodule; HOM; radiation; operation

Domaines: Physique des accélérateurs [physics.acc-ph]

Nikolay Solyak, E. Cullerton, Joshua Einstein-Curtis, Elvin Harms, Brian Hartsell, et al.. Performance of the First LCLS-II Cryomodules: Issues and Solutions. 9th International Particle Accelerator Conference, Apr 2018, Vancouver, Canada. pp.MOZGBD3, ⟨10.18429/JACoW-IPAC2018-MOZGBD3⟩. ⟨hal-02065783⟩