STI Publications - View Publication Form #16258
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Publication Information
| Title | Method for In-Situ and In-Operando Cavity Loaded Q-Extraction in SRF Accelerators | ||||
| Abstract | A novel method has been developed that allows extracting the loaded quality factor of particle accelerating radio frequency cavities at any time during beam operation from acquired control system process parameters without the need of additional measurement equipment. Concurrently it assesses the attenuation in a cavities' power transmission line to correct inaccuracies of measured forward and reflected power levels. The mathematical formalism is described and is specifically derived for cryogenically cooled superconducting cavities and for which the loaded quality factor can be equated with the external quality factor of the input power coupler. The described method has been applied for 418 superconducting cavities in operation at the Continuous Electron Beam Accelerator Facility at the Thomas Jefferson National Accelerator Facility. The validation of the method as well as its beneficial use as a diagnostic tool is demonstrated for a finite number of examples utilizing process variabl | ||||
| Author(s) | Frank Marhauser | ||||
| Publication Date | March 2021 | ||||
| Category | SRF Technology | ||||
| Document Type | Journal Article | ||||
| Primary Institution | Thomas Jefferson National Accelerator Facility, Newport News | ||||
| Affiliation | Accelerator Ops, R&D / Inst for SRF Sci & Tech / SRF Research & Dev | ||||
| Funding Source | Nuclear Physics (NP) | ||||
| Proprietary? | No | ||||
| This publication conveys | Technical Science Results | ||||
| Document Numbers |
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| Associated with an experiment | No | ||||
| Associated with EIC | No | ||||
| Supported by Jefferson Lab LDRD Funding | No |
Journal Article
| Journal Name | Physical Review Special Topics AB |
| Refereed | Yes |
| Volume | 24 |
| Issue | |
| Page(s) | 032001 |
Attachments/Datasets/DOI Link
| Document(s) |
PhysRevAccelBeams.24.pdf
(STI Document)
PhysRevAccelBeams.24.pdf
(Supporting)
PhysRevAccelBeams.24.032001.pdf
(Accepted Manuscript)
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| DOI Link | |
| Dataset(s) | (none) |
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