Paper |
Title |
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WEPMB036 |
High Pressure Rinsing for Niobium Superconducting Cavity |
2202 |
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- Y. Jung, M.J. Joung, M. Lee
IBS, Daejeon, Republic of Korea
- J. Lee, J. Seo
Vitzrotech Co., Ltd., Ansan City, Kyunggi-Do, Republic of Korea
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Niobium superconducting cavity is treated with high pressure rinsing to clean the inner surface of the cavity. Either organic or inorganic residues on the inner surface of the cavity can cause serious problems during the cavity operation. A thermal quenching - superconducting material loses its superconductivity - is a typical phenomenon brought out by harmful defects by increasing critical temperature. We have performed high pressure rinsing experiments to check out a prototype HPR machine. HPR experiments were performed with a simplified cavity structure, and analyzed as a function of the pressure, the distance from a nozzle, and the sizes of defects on the niobium surface. In this presentation, we will discuss the performance of the prototype HPR machine.
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DOI • |
reference for this paper
※ DOI:10.18429/JACoW-IPAC2016-WEPMB036
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WEPMB039 |
Operation Techniques for HWR1 Cryomodule |
2205 |
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- H. Kim, J.W. Choi, Y.W. Jo, W.K. Kim, Y. Kim, M. Lee
IBS, Daejeon, Republic of Korea
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Control systems such as PLC and EPICS are developed for a half-wave resonator (HWR) cryomodule. PLC rack is fabricated for the HWR1 cryomodule. The PLC controls pumps, heaters and valves. The PLC communicates with temperature monitors through Ethernet. HMI of PLC and EPICS controls and monitors pumps, heaters, valves and temperature sensors through switching hub. The PLC HMI is developed and EPICS is also developed. The CSS of EPICS consists of control, monitor, parameter set-up, alarm and data browser screen.
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DOI • |
reference for this paper
※ DOI:10.18429/JACoW-IPAC2016-WEPMB039
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Export • |
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※ LaTeX,
※ Text/Word,
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