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{porter:srf2023-mopmb081,
author = {R.D. Porter and S. Aderhold and L.E. Alsberg and A.T. Cravatta and M.A. Drury and G. Gaitan and D. Gonnella and J.P. Holzbauer and M.D. McCaughan and J. Nelson and N.R. Neveu and S. Posen and N.A. Stilin and C.M. Wilson and L.M. Zacarias},
% author = {R.D. Porter and S. Aderhold and L.E. Alsberg and A.T. Cravatta and M.A. Drury and G. Gaitan and others},
% author = {R.D. Porter and others},
title = {{Microphonics in the LCLS-II Superconducting Linac}},
% booktitle = {Proc. SRF'23},
booktitle = {Proc. 21th Int. Conf. RF Supercond. (SRF'23)},
pages = {302--305},
eid = {MOPMB081},
language = {english},
keywords = {cryomodule, cavity, linac, operation, vacuum},
venue = {Grand Rapids, MI, USA},
series = {International Conference on RF Superconductivity},
number = {21},
publisher = {JACoW Publishing, Geneva, Switzerland},
month = {09},
year = {2023},
issn = {2673-5504},
isbn = {978-3-95450-234-9},
doi = {10.18429/JACoW-SRF2023-MOPMB081},
url = {https://jacow.org/srf2023/papers/mopmb081.pdf},
abstract = {{The LCLS-II project has installed a new superconducting linac at SLAC that consists of 35 1.3 GHz cryomodules and 2 3.9 GHz cryomodules. The linac will provide a 4 GeV electron beam for generating soft and hard X-ray pulses. Cavity detuning induced by microphonics was a significant design challenge for the LCLS-II cryomodules. Cryomodules were produced that were within the detuning specification (10 Hz for 1.3 GHz cryomodules) on test stands. Here we present first measurements of the microphonics in the installed LCLS-II superconducting linac. Overall, the microphonics in the linac are manageable with 94% of cavities coming within the detune specification. Only two cavities are gradient limited due to microphonics. We identify a leaking cool down valve as the source of microphonics limiting those two cavities.}},
}