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TY - CONF AU - Belohrad, D. AU - Esperante Pereira, D. AU - Kral, J. AU - Pedersen, S.B. ED - Schaa, Volker RW TI - Upgrade of the LHC Bunch by Bunch Intensity Measurement Acquisition System J2 - Proc. of IBIC2016, Barcelona, Spain, Sept. 13-18, 2016 C1 - Barcelona, Spain T2 - International Beam Instrumentation Conference T3 - 5 LA - english AB - The fast beam intensity measurement systems for the LHC currently use an analogue signal processing chain to provide the charge information for individual bunches. This limits the possibility to use higher level correction algorithms to remove systematic measurement errors coming from the beam current transformer and the associated analogue electronics chain. In addition, the current measurement system requires individual settings for different types of beams, implying the need for continuous tuning during LHC operation. Using modern technology, the analogue measurement chain can be replaced by an entirely digital acquisition system, even in a case of the short, pulsed signals produced by the LHC beams. This paper discusses the implementation of the new digital acquisition system and the calculations required to reconstruct the individual LHC bunch intensities, along with the presentation of results from actual beam measurements. PB - JACoW CP - Geneva, Switzerland SP - 135 EP - 138 KW - FPGA KW - real-time KW - acceleration KW - proton KW - interface DA - 2017/02 PY - 2017 SN - 978-3-95450-177-9 DO - 10.18429/JACoW-IBIC2016-MOPG39 UR - http://jacow.org/ibic2016/papers/mopg39.pdf ER -