Quench localisation in SRF cavity tests with transition edge sensors

Transition edge sensors (TES) have recently been developed at CERN as second sound detectors for quench localisation on superconducting radio frequency (SRF) cavities. After validation of the concept of heat source localisation by TES in the laboratory, TES have been implemented as a diagnostic tool...

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Bibliographic Details
Published inIOP conference series. Materials Science and Engineering Vol. 502; no. 1; pp. 12155 - 12159
Main Authors Furci, H, Vandoni, G, Macpherson, A, Barriere, S, Castilla, A, Shipman, N, Turaj, K, Wartak, M, Zwozniak, A
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.04.2019
Subjects
CERN
Cryostats
Holes
Localization
Sensors
Sound
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Summary:Transition edge sensors (TES) have recently been developed at CERN as second sound detectors for quench localisation on superconducting radio frequency (SRF) cavities. After validation of the concept of heat source localisation by TES in the laboratory, TES have been implemented as a diagnostic tool in SRF vertical testing cryostats at CERN SM18 facility. Two cavities were forced to quench by applying sufficiently high values of RF power. Simultaneously, RF and TES second sound signals were recorded. In this paper we present the particularities of each of the relevant tests, the nature of the read signals, as well as the analysis performed on them to locate the origin of the quenching spot.
ISSN:1757-8981
1757-899X
1757-899X
DOI:10.1088/1757-899X/502/1/012155