JACoW is a publisher in Geneva, Switzerland that publishes the proceedings of accelerator conferences held around the world by an international collaboration of editors.
@inproceedings{contreras-martinez:napac2022-mopa23, author = {C. Contreras-Martinez and T.T. Arkan and A.T. Cravatta and B.D. Hartsell and J.A. Kaluzny and T.N. Khabiboulline and Y.M. Pischalnikov and S. Posen and G.V. Romanov and J.C. Yun}, % author = {C. Contreras-Martinez and T.T. Arkan and A.T. Cravatta and B.D. Hartsell and J.A. Kaluzny and T.N. Khabiboulline and others}, % author = {C. Contreras-Martinez and others}, title = {{Tests of the Extended Range SRF Cavity Tuners for the LCLS-II HE Project}}, & booktitle = {Proc. NAPAC'22}, booktitle = {Proc. 5th Int. Particle Accel. Conf. (NAPAC'22)}, pages = {100--102}, eid = {MOPA23}, language = {english}, keywords = {cavity, operation, cryomodule, SRF, vacuum}, venue = {Albuquerque, NM, USA}, series = {International Particle Accelerator Conference}, number = {5}, publisher = {JACoW Publishing, Geneva, Switzerland}, month = {10}, year = {2022}, issn = {2673-7000}, isbn = {978-3-95450-232-5}, doi = {10.18429/JACoW-NAPAC2022-MOPA23}, url = {https://jacow.org/napac2022/papers/mopa23.pdf}, abstract = {{The LCLS-II HE superconducting linac will produce multi-energy beams by supporting multiple undulator lines simultaneously. This could be achieved by using the cavity SRF tuner in the off-frequency detune mode. This off-frequency operation method was tested in the verification cryomodule (vCM) and CM 1 at Fermilab at 2 K. In both cases, the tuners achieved a frequency shift of -565±80 kHz. This study will discuss cavity frequency during each step as it is being assembled in the cryomodule string and finally when it is being tested at 2 K. Tracking the cavity frequency helped enable the tuners to reach this large frequency shift. The specific procedures of tuner setting during assembly will be presented.}}, }