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Persistent URL http://purl.org/net/epubs/work/38231488
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Record Id 38231488
Title Innovative Cryogenic Test Facility for Testing SRF Cavity Series Production
Abstract Testing SRF cavities in a vertical cryostat is the first step in qualifying the performance of SRF cavities before being integrated into a cryomodule. The European Spallation Source (ESS) requires 84 high-beta 5 cells, 704 MHz cavities which will be manufactured and qualified for their RF performance in a vertical cryostat at Science and Technology Facility Council (STFC) Daresbury Laboratory (United-kingdom). Taking a conventional approach each vertical test would require a large cryostat demanding more than 7000 litres of liquid helium per test for testing 3 cavities simultaneously. In order to reduce the overall operating cost, we plan to develop an alternative method to divide the liquid helium consumption by 5 by filling liquid helium only in each individual helium vessels enclosing each cavity placed horizontally in the cryostat. Therefore the test is performed in more realistic conditions such as in a cryomodule and reduces the operating time. This also reduces the mass flow-rate to be handled by a factor 10, leading to 2 g/s, thus reducing the size of the associated components such as the 2 K pumps, the safety device, the valves and transfer lines.
Organisation ASTeC , TECH , STFC
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Language English (EN)
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Paper In Conference Proceedings In 18th International Conference on RF Superconductivity (SRF2017), Lanzhou, China, 17-21 Jul 2017, (2017): 520-523. http://accelconf.…7/papers/tupb060.pdf 2017