| Title |
Instrumentation for High Performance Cavities and Cryomodule Field Emission Analysis |
| Authors |
- G. Devanz
CEA-IRFU, Gif-sur-Yvette, France
- M. Baudrier, E. Cenni, L. Maurice, O. Piquet
CEA-DRF-IRFU, France
|
| Abstract |
Field emission (FE) is one of the main reasons for the degradation of accelerator cryomodules, as field emitted current tends to become more severe during the beam operation. It is essential to better understand how this phenomenon is generated and evolves from the SRF cavity preparation in the clean room, through their assembly in the cryomodule until their final test and operation. Due to the shielding environment of a cavity in its vertical test stand, or the architecture of a cryomodule, the more faint radiation occurring at the FE onset remains undetected. More precise diagnostic and analysis tools are required to gain more information. We present the developpement of dedicated time-resolved detectors for the FE radiation which aim at improving its coverage in terms of solid angle and lower energy threshold sensitivity. We approach this topic through detailed simulation based on the Geant4 toolkit in order to analyse the interaction of FE radiation with the cavity environement and optimize the detectors with respect to their application in cryomodule or vertical test stands. We illustrate by analysing recent cryomodule experimental test data.
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| Paper |
download FRIBA02.PDF [4.447 MB / 8 pages] |
| Slides |
download FRIBA02_TALK.PDF [9.606 MB] |
| Cite |
download ※ BibTeX
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※ EndNote |
| Conference |
SRF2023 |
| Series |
International Conference on RF Superconductivity (21st) |
| Location |
Grand Rapids, MI, USA |
| Date |
25-30 June 2023 |
| Publisher |
JACoW Publishing, Geneva, Switzerland |
| Editorial Board |
Kenji Saito (FRIB, MSU, East Lansing, MI, USA); Ting Xu (FRIB, MSU, East Lansing, MI, USA); Naruhiko Sakamoto (RIKEN, Wako, Japan); Volker R.W. Schaa (GSI, Darmstadt, Germany); Paul W. Thomas (FRIB, MSU, East Lansing, MI, USA) |
| Online ISBN |
978-3-95450-234-9 |
| Online ISSN |
2673-5504 |
| Received |
27 June 2023 |
| Revised |
28 June 2023 |
| Accepted |
05 July 2023 |
| Issue Date |
09 July 2023 |
| DOI |
doi:10.18429/JACoW-SRF2023-FRIBA02 |
| Pages |
978-985 |
| Copyright |
 Published by JACoW Publishing under the terms of the Creative Commons Attribution 4.0 International license. Any further distribution of this work must maintain attribution to the author(s), the published article's title, publisher, and DOI. |
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