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Spiral2 cryomodules B tests results

Abstract : Assembly and tests of the SPIRAL2 superconducting linac's cryomodules at CEA/Saclay and IPN/Orsay have now reached cruising speed after having faced a series of problems, among them contamination. 19 cryomodules are composing the whole Linac and IPN Orsay is in charge of the 7 cryomodules B, housing two 88 MHz, beta 0.12 Quarter-Wave Resonators. Threecryomodules have been assembled and successfullytested up to the nominal gradient of 6.5 MV/m for all cavities with also cryogenic losses withinspecifications. Two of them are fully qualified and already delivered to GANIL. The thirdone showed misalignment ofone cavity which could lead to partial disassembly if needed. This paper presents the results of those cryomodules tests as well as the status of the remaining ones.
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G. Olry, F. Chatelet, C. Commeaux, N. Gandolfo, D. Grolet, et al.. Spiral2 cryomodules B tests results. 16th International Conference on RF Superconductivity (SRF2013), Sep 2013, Paris, France. pp.95-99. ⟨in2p3-00867506⟩

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