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| URL | https://doi.org/10.18429/JACoW-LINAC2024-TUPB013 |
|---|---|
| Title | RF pulse conditioning to reduce field emission in FRIB SRF cryomodules |
| Authors |
|
| Abstract | Field emission (FE) is a major contributor to degradation in the high-field performance of Superconducting Radio Frequency (SRF) cavities. The driver linac for the Facility for Rare Isotope Beams (FRIB) has been operating for user experiments since May 2022, using 104 quarter-wave resonators and 220 half-wave resonators in 46 cryomodules. We have used pulsed RF conditioning to mitigate the FE X-rays and maintain the cavities’ performance. During conditioning, we observe "electrical breakdown," a rapid (<1us (known (~ms) ) 50 a accelerating accompanied after also analysis and are area as be breakdown burning by cavities cavity collapse conditioning conditioning. cryomodules.< discharge dose effective electrical emitter emitter, enhancement events, factor fe field field. fitting for found fowler-nordheim frib further gradient. greatly hampers hand, have in inferred investigated it limits local may of on other out paper, present pulse quench) rate reduced rf seen, several single slow surface. td that the thereof thermal this to vacuum vs we when which will x-ray x-rays> |
| Paper | download: TUPB013.pdf |
| Cite | BibTeX, LaTeX, Text/Word, RIS, EndNote |
| Conference | 32nd Linear Accelerator Conference (LINAC2024) |
| Series | |
| Location | Chicago, IL, USA |
| Date | 25-30 Aug 2024 |
| Publisher | JACoW Publishing, Geneva, Switzerland |
| Editorial Board | Kelly Jaje (ANL), Kip Bishofberger (LANL), Ryan Brody (ANL), Gustavo Bruno (ANL), Jan Chrin (PSI), Cathy Eyberger (ANL), Maggie Montes (SLAC), Denise Skiadopoulos (ANL), Ling Wang (MSU/FRIB), Kent Wootton (ANL) |
| Online ISBN | 978-3-95450-219-6 |
| Online ISSN | 2226-0366 |
| Received | 22 August 2024 |
| Revised | 29 August 2024 |
| Accepted | 30 August 2024 |
| Issued | 23 October 2024 |
| DOI | 10.18429/JACoW-LINAC2024-TUPB013 |
| Pages | 355-358 |
| Copyright | Published by JACoW Publishing under the terms of the Creative Commons Attribution 4.0 license. Any further distribution of this work must maintain attribution to the author(s), the published article's title, publisher, and DOI. |