on CMS information server CMS CR-2015 / 295 The Compact Muon Solenoid Experiment

The CMS Beam Radiation Instrumentation and Luminosity (BRIL) project is composed of several systems providing the experiment protection from adverse beam conditions while also measuring the online luminosity and beam background. Although the readout bandwidth of the Fast Beam Conditions Monitoring system (BCM1F one of the faster monitoring systems of the CMS BRIL), was sufficient for the initial LHC conditions, the foreseen enhancement of the beams parameters after the LHC Long Shutdown-1 (LS1) imposed the upgrade of the system. This paper presents the new BCM1F, which is designed to provide real-time fast diagnosis of beam conditions and instantaneous luminosity with readout able to resolve the 25 ns sub-bunch structure. Presented at TWEPP 2015 TWEPP 2015 Topical Workshop on Electronics for Particle Physics New Fast Beam Conditions Monitoring (BCM1F) system for CMS Agnieszka A. Zagozdzinska a, b *, Alan J.Bellg, Anne E. Dabrowskia, Maria Hempeld, Hans.M.Henschel d, Olena Karacheban d, Dominik Przyborowski c, Jessica L. Leonard d, Marek Penno d, Krzysztof T. Pozniak b, Marco Miraglia a, e, Wolfgang Lange d, Wofgang Lohmann d,f, Vladimir Ryjov a, Arkady Lokhovitskiyg, David Stickland c, Roberval Walsh d, on behalf of the CMS Collaboration a CERN, Geneva, Switzerland b Warsaw University of Technology, Warsaw, Poland c AGH University of Science and Technology, Warsaw, Poland d DESY, Zeuthen, Germany, Zeuthen, Germany e Sezione di Pisa, Piza, Italy f Branderburg University of Technology, Branderburg, Germany g University of Canterbury, Christchurch, New Zealand E-mail: a.zago@cern.ch ABSTRACT: The CMS Beam Radiation Instrumentation and Luminosity (BRIL) project is composed of several systems providing the experiment protection from adverse beam conditions while also measuring the online luminosity and beam background. Although the readout bandwidth of the Fast Beam Conditions Monitoring system (BCM1F one of the faster monitoring systems of the CMS BRIL), was sufficient for the initial LHC conditions, the foreseen enhancement of the beams parameters after the LHC Long Shutdown-1 (LS1) imposed the upgrade of the system. This paper presents the new BCM1F, which is designed to provide real-time fast diagnosis of beam conditions and instantaneous luminosity with readout able to resolve the 25 ns bunch structure. The CMS Beam Radiation Instrumentation and Luminosity (BRIL) project is composed of several systems providing the experiment protection from adverse beam conditions while also measuring the online luminosity and beam background. Although the readout bandwidth of the Fast Beam Conditions Monitoring system (BCM1F one of the faster monitoring systems of the CMS BRIL), was sufficient for the initial LHC conditions, the foreseen enhancement of the beams parameters after the LHC Long Shutdown-1 (LS1) imposed the upgrade of the system. This paper presents the new BCM1F, which is designed to provide real-time fast diagnosis of beam conditions and instantaneous luminosity with readout able to resolve the 25 ns bunch structure.