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TY - CONF AU - Jamet, C. AU - Legallois, P. ED - Kim, Changbum ED - Schaa, Volker R. W. ED - Kim, Dong-Eon ED - Lee, Jaeyu TI - Commissioning and Results of SPIRAL2 BPMs J2 - Proc. of IBIC2021, Pohang, Rep. of Korea, 24-28 May 2021 CY - Pohang, Rep. of Korea T2 - International Beam Instrumentation Conference T3 - 10 LA - english AB - Construction of a new accelerator is always an opportunity to face challenges and make new developments. The BPM diagnostics installed in the SPIRAL2 linac and the associated instrumentation are part of these developments. BPM instrumentations are, of course, used to measure positions and phases of ion beams but also transverse shapes, called ellipticity, as well as the beam velocity. Specifications involve knowing and calculating the sensitivities in position and in ellipticity as a function of the beam velocities. These impose small amplitude differences between channels, which require precise calibration of electronics. This paper describes the modelling and analysis of the BPM behaviour according to the beam velocity, the technical solutions, modifications and improvements. An analysis of the results and evolutions in progress are also presented. PB - JACoW Publishing CP - Geneva, Switzerland SP - 140 EP - 144 KW - linac KW - cavity KW - electron KW - proton KW - instrumentation DA - 2021/10 PY - 2021 SN - 2673-5350 SN - 978-3-95450-230-1 DO - doi:10.18429/JACoW-IBIC2021-MOPP35 UR - https://jacow.org/ibic2021/papers/mopp35.pdf ER -