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TY - CONF AU - Wamsat, T. AU - Lensch, T. ED - White, Karen S. ED - Brown, Kevin A. ED - Dyer, Philip S. ED - Schaa, Volker RW TI - The European XFEL Beam Loss Monitor System J2 - Proc. of ICALEPCS2019, New York, NY, USA, 05-11 October 2019 CY - New York, NY, USA T2 - International Conference on Accelerator and Large Experimental Physics Control Systems T3 - 17 LA - english AB - The European XFEL MTCA based Beam Loss Monitor (BLM) System is composed of about 470 BLMs, which are part of the Machine Protection System (MPS). The BLMs detect losses of the electron beam, in order to protect accelerator components from damage and excessive activation, in particular the undulators, since they are made of permanent magnets. Also each cold accelerating module is equipped with a BLM to measure the sudden onset of field emission (dark current) in cavities. In addition some BLMs are used as detectors for wire- scanners. Further firmware and server developments related to alarm generation and handling are ongoing. The BLM systems structure, the current status and the different possibilities to trigger alarms which stop the electron beam will be presented. PB - JACoW Publishing CP - Geneva, Switzerland SP - 1630 EP - 1633 KW - FEL KW - electron KW - high-voltage KW - undulator KW - controls DA - 2020/08 PY - 2020 SN - 2226-0358 SN - 978-3-95450-209-7 DO - doi:10.18429/JACoW-ICALEPCS2019-THCPR04 UR - https://jacow.org/icalepcs2019/papers/thcpr04.pdf ER -