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TY - CPAPER AU - Checchin, M. TI - Nature of Quality Factor Degradation in SRF Cavities due to Quench J2 - Proc. of International Conference on RF Superconductivity (SRF2015), Whistler, BC, Canada, Sept. 13-18, 2015 AB - Superconductive quench is a well-known phenomenon that causes magnetic flux trapping in superconducting accelerating cavities increasing the radio-frequency surface resistance. This paper is addressed to the understanding of the quench-induced losses nature. We present the proof that the real origin of quench-related quality factor degradation is consequence only of ambient magnetic field trapped at the quench spot. Also, we show how the quality factor can be fully recovered after it was highly deteriorated quenching several times in presence of external magnetic field. Such phenomenon was found to be completely reliable up to certain values of applied magnetic field, above that the cavity quality factor cannot be fully recovered anymore. PB - JACoW CY - Geneva, Switzerland SP - 41 EP - 47 KW - cavity KW - superconductivity KW - simulation KW - electron KW - cryogenics DA - 2015/12 PY - 2015 SN - 978-3-95450-178-6 DO - 10.18429/JACoW-SRF2015-MOBA05 UR - http://srf2015.vrws.de/papers/moba05.pdf ER -