Publications
Publication Information
| Title | A simple variable coupler for the cryogenic test of SRF cavities | ||
| Authors | Gianluigi Ciovati, Larry Turlington | ||
| JLAB number | JLAB-ACC-19-2959 | ||
| LANL number | (None) | ||
| Other number | DOE/OR/23177-4708 | ||
| Document Type(s) | (Meeting) | ||
| Associated with EIC: | No | ||
| Supported by Jefferson Lab LDRD Funding: | No | ||
| Funding Source: | Nuclear Physics (NP) | ||
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Meeting Paper compiled for SRF 2019 (19th International Conference on RF Superconductivity) Proceedings Proceedings of SRF 2019 Edited By Peter Michel, André Arnold, Volker RW Schaa JACOW (2019) Page(s) 282 | |||
| Publication Abstract: | The cryogenic rf tests of superconducting radio-frequency (SRF) cavities in vertical cryostats is typically carried out using fixed-length antennae to couple rf pow-er into the cavity and to probe the energy stored into the cavity. Although variable couplers have been designed, built and used in the past, they are often a complex, cost-ly, not very reliable auxiliary component to the cavity test. In this contribution, we present the design and im-plementation of a simple variable rf antenna which has ~50 mm travel, allowing to obtain about four orders of magnitude variation in Qext-value. The motion of the antenna is driven by a motorized linear feedthrough out-side of the cryostat. The antenna can easily be mounted on the most common type of cavity flangesv | ||
| Experiment Numbers: | other | ||
| Group: | SRF Research & Dev | ||
| Document: | |||
| DOI: | https://doi.org/10.18429/JACoW-SRF2019-MOP084 | ||
| Accepted Manuscript: | mop084.pdf | ||
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