Some Interesting Observations During Vertical Test on ESS-HB-704 SRF Cavities
| Autor: | Dumbell, Keith, Akintola, Ayomikun, Buckley, Rachael, Ellis, Mike, Hancock, Mark, Hathaway, Jane, Hitchen, Sean, Hodgkinson, Carl, Hornickel, Philip, Jenkins, Conor, Jones, Geraint, Lewis, Jonathan, Lowe, Mike, Mason, David, May, Andrew, McIntosh, Peter, Middleman, Keith, Miller, George, Moss, Andrew, Mutch, Jenifer, Oates, Adrian, Pattalwar, Shrikant, Pendleton, Mark, Smith, Paul, Wheelhouse, Alan, Wilde, Stuart, Wilson, James |
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| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: | |
| DOI: | 10.18429/jacow-linac2022-thpoge05 |
| Popis: | The vertical test stand in use at Daresbury has three cavities loaded horizontally at different heights. The jacketed cavities are supplied with liquid helium from a header tank at the top of the configuration. A few cavities have been tested in different positions and the results have been analysed. The pressure of the helium inside the jacketed cavities is affected by the height of the liquid helium column above the jacket and using results from earlier analysis during cool-down enables the pressure of the cavity to be determined from the frequency of operation. Analysis of the effects may allow for corrections to the frequency to be made. In addition to the above observations there have also been some challenges in the operation at higher power as the phase of the self-excited loop driving the system, has been seen to change. This paper discusses some of the observation, analysis of those observations and challenges that are being addressed in the continuing use of this facility. Proceedings of the 31st International Linear Accelerator Conference, LINAC2022, Liverpool, UK |
| Databáze: | OpenAIRE |
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