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| TUPO058 |
Cool Down Studies for the LCLS-II Project |
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- M. Ge, M. Liepe
Cornell University (CLASSE), Cornell Laboratory for Accelerator-Based Sciences and Education, Ithaca, New York, USA
- D. Gonnella
SLAC, Menlo Park, California, USA
- J. Sears
Cornell University, Ithaca, New York, USA
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The quality factor of the nitrogen-doped SRF cavities for the LCLS-II project are strongly impacted by cool down speed. A sufficiently fast cool down speed can produce large thermal gradient across a cavity and sufficiently expel magnetic flux when the cavity wall passes from the normal-conducting to the superconducting state. However, instrumentation in LCLS-II production cryomodules has been kept at a minimum, and additional information during the cool down of the modules is therefore desirable. In this work, we study if and how RF data can be used during cavity cool-down to determine the transition speeds of the individual cavities in the LCLS-II linac.
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| DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-LINAC2018-TUPO058
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| About • |
paper received ※ 19 September 2018 paper accepted ※ 20 September 2018 issue date ※ 18 January 2019 |
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