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TY - CONF AU - Novokshonov, A.I. AU - Aboulbanine, Z. AU - Adhikari, G.D. AU - Aftab, N. AU - Boonpornprasert, P. AU - Georgiev, G.Z. AU - Good, J. AU - Groß, M. AU - Koschitzki, C. AU - Krasilnikov, M. AU - Kube, G. AU - Li, X. AU - Lishilin, O. AU - Lueangaramwong, A. AU - Melkumyan, D. AU - Mueller, F. AU - Oppelt, A. AU - Qian, H.J. AU - Stephan, F. AU - Strokov, S. AU - Vashchenko, G. AU - Weilbach, T. ED - Forck, Peter ED - Wawrzyniak, Adriana ED - Schaa, Volker R.W. ED - Kowalski, Grzegorz W. ED - Cudek, Agnieszka (SOLARIS, Kraków TI - Scintillator Nonproportionality Studies at PITZ J2 - Proc. of IBIC2022, Kraków, Poland, 11-15 September 2022 CY - Kraków, Poland T2 - International Beam Instrumentation Conference T3 - 11 LA - english AB - A standard technique to measure beam profiles in linear accelerators are screen monitors using scintillating screens. This technique is used e.g. at the European XFEL in order to overcome coherence effects in case of OTR usage [*]. During the XFEL commissioning it was found out that screens based on LYSO:Ce as scintillating material revealed a nonproportional light output [**]. Reason for it is the high particle beam density. As consequence it was decided to exchange LYSO:Ce by GAGG:Ce scintillators because the excitation carriers can rapidly transfer their energy to excited states of gadolinium, and a rapid migration of this energy among the Gd sub-lattice is expected. Driven by the observations at XFEL a series of measurements was started to investigate the properties of various scintillator materials (LYSO:Ce, YAP:Ce, YAG:Ce, LuAG:Ce and GAGG:Ce). The last measurement campaign was carried out at PITZ which allows to operate at higher beam charge and lower electron energy compared to the XFEL. The present work summarizes the results of these measurements. PB - JACoW Publishing CP - Geneva, Switzerland SP - 277 EP - 280 KW - FEL KW - electron KW - diagnostics KW - MMI KW - experiment DA - 2022/12 PY - 2022 SN - 2673-5350 SN - 978-3-95450-241-7 DO - doi:10.18429/JACoW-IBIC2022-TUP21 UR - https://jacow.org/ibic2022/papers/tup21.pdf ER -