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TY - CONF AU - Singh, R. AU - Barth, W.A. AU - Forck, P. AU - Lauber, S. AU - Miski-Oglu, M. AU - Reichert, T. AU - Scarpine, V.E. AU - Sieber, T. AU - Sun, D. ED - Kim, Changbum ED - Schaa, Volker R. W. ED - Kim, Dong-Eon ED - Lee, Jaeyu TI - Comparison of Feschenko BSM and Fast Faraday Cup with Low Energy Ion Beams 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 - A comparison between Fast Faraday Cup and Feschenko longitudinal bunch shape detectors was recently performed at HELIAC Advanced Demonstrator beamline at GSI. Feschenko bunch shape monitor (BSM) uses the time to space conversion by means of secondary electrons emitted from a wire correlated to a rf deflector, while the fast Faraday cup (FFC) measures the deposited charge in a cup geometry matched to 50 Ohm. The FFC design aims to minimize the bunch shape dilution due to field polarization and secondary electrons produced on irradiation. An He¹⁺ with 100 µA average current and 1.4 MeV/u kinetic energy is utilized for this comparison. A buncher upstream of the detectors was operated to focus the beam longitudinally. The results are discussed in this contribution. PB - JACoW Publishing CP - Geneva, Switzerland SP - 407 EP - 411 KW - electron KW - heavy-ion KW - cavity KW - pick-up KW - radiation DA - 2021/10 PY - 2021 SN - 2673-5350 SN - 978-3-95450-230-1 DO - doi:10.18429/JACoW-IBIC2021-WEPP16 UR - https://jacow.org/ibic2021/papers/wepp16.pdf ER -