002798134 001__ 2798134
002798134 003__ SzGeCERN
002798134 005__ 20221020161321.0
002798134 0248_ $$aoai:cds.cern.ch:2798134$$pcerncds:FULLTEXT$$pcerncds:CERN:FULLTEXT$$pINIS$$pcerncds:CERN
002798134 0247_ $$2DOI$$9EDP Sciences$$a10.1051/epjconf/202024501032
002798134 037__ $$aCMS-CR-2020-076
002798134 035__ $$9Inspire$$a1832015
002798134 041__ $$aeng
002798134 100__ $$aBadaro, Gilbert$$uAmerican U. of Beirut
002798134 245__ $$9EDP Sciences$$a40 MHz Level-1 Trigger Scouting for CMS
002798134 260__ $$c2020
002798134 269__ $$aGeneva$$bCERN$$c09 Mar 2020
002798134 300__ $$a7 p
002798134 520__ $$aThe CMS experiment will be upgraded for operation at the High-Luminosity LHC to maintain and extend its physics performance under extreme pileup conditions. Upgrades will include an entirely new tracking system, supplemented by a track finder processor providing tracks at Level-1, as well as a high-granularity calorimeter in the endcap region. New front-end and back-end electronics will also provide the Level-1 trigger with high-resolution information from the barrel calorimeter and the muon systems. The upgraded Level-1 processors, based on powerful FPGAs, will be able to carry out sophisticated feature searches with resolutions often similar to the offline ones, while keeping pileup effects under control. In this paper, we discuss the feasibility of a system capturing Level-1 intermediate data at the beam-crossing rate of 40 MHz and carrying out online analyses based on these limited-resolution data. This 40 MHz scouting system would provide fast and virtually unlimited statistics for detector diagnostics, alternative luminosity measurements and, in some cases, calibrations, and it has the potential to enable the study of otherwise inaccessible signatures, either too common to fit in the Level-1 accept budget, or with requirements which are orthogonal to ?mainstream? physics, such as long-lived particles. We discuss the requirements and possible architecture of a 40 MHz scouting system, as well as some of the physics potential, and results from a demonstrator operated at the end of Run-2 using the Global Muon Trigger data from CMS. Plans for further demonstrators envisaged for Run-3 are also discussed.
002798134 520__ $$9EDP Sciences$$aThe CMS experiment will be upgraded for operation at the HighLuminosity LHC to maintain and extend its physics performance under extreme pileup conditions. Upgrades will include an entirely new tracking system, supplemented by a track finder processor providing tracks at Level-1, as well as a high-granularity calorimeter in the endcap region. New front-end and back-end electronics will also provide the Level-1 trigger with high-resolution information from the barrel calorimeter and the muon systems. The upgraded Level-1 processors, based on powerful FPGAs, will be able to carry out sophisticated feature searches with resolutions often similar to the offline ones, while keeping pileup effects under control. In this paper, we discuss the feasibility of a system capturing Level-1 intermediate data at the beam-crossing rate of 40 MHz and carrying out online analyzes based on these limited-resolution data. This 40 MHz scouting system would provide fast and virtually unlimited statistics for detector diagnostics, alternative luminosity measurements and, in some cases, calibrations. It has the potential to enable the study of otherwise inaccessible signatures, either too common to fit in the Level-1 accept budget, or with requirements which are orthogonal to “mainstream” physics, such as long-lived particles. We discuss the requirements and possible architecture of a 40 MHz scouting system, as well as some of the physics potential, and results from a demonstrator operated at the end of Run-2 using the Global Muon Trigger data from CMS. Plans for further demonstrators envisaged for Run-3 are also discussed.
002798134 540__ $$aCC-BY-4.0$$bEDP Sciences$$uhttps://creativecommons.org/licenses/by/4.0/
002798134 542__ $$dThe Authors$$g2020
002798134 595__ $$aCERN EDS
002798134 6531_ $$9CMS$$aDataAcquisition
002798134 65017 $$2SzGeCERN$$aComputing and Computers
002798134 65017 $$2SzGeCERN$$aDetectors and Experimental Techniques
002798134 693__ $$aCERN LHC$$eCMS
002798134 690C_ $$aINTNOTE
002798134 690C_ $$aCERN
002798134 690C_ $$aPUBLCMS
002798134 690C_ $$aARTICLE
002798134 700__ $$aBehrens, Ulf$$uRice U.
002798134 700__ $$aBranson, James$$uUC, San Diego
002798134 700__ $$aBrummer, Philipp$$uCERN$$uKIT, Karlsruhe$$vAlso at Karlsruhe Institute of Technology, Karlsruhe, Germany
002798134 700__ $$aCittolin, Sergio$$uUC, San Diego
002798134 700__ $$aSilva-Gomes, Diego Da$$uFermilab$$uCERN$$vAlso at CERN, Geneva, Switzerland
002798134 700__ $$aDarlea, Georgiana-Lavinia$$uMIT
002798134 700__ $$aDeldicque, Christian$$uCERN
002798134 700__ $$aDobson, Marc$$uCERN
002798134 700__ $$aDoualot, Nicolas$$uFermilab$$uCERN$$vAlso at CERN, Geneva, Switzerland
002798134 700__ $$aFulcher, Jonathan Richard$$uCERN
002798134 700__ $$aGigi, Dominique$$uCERN
002798134 700__ $$aGladki, Maciej$$uCERN
002798134 700__ $$aGlege, Frank$$uCERN
002798134 700__ $$aGolubovic, Dejan$$uCERN
002798134 700__ $$aGomez-Ceballos, Guillelmo$$uMIT
002798134 700__ $$aHegeman, Jeroen$$uCERN
002798134 700__ $$aJames, Thomas Owen$$uCERN
002798134 700__ $$aLi, Wei$$uRice U.
002798134 700__ $$aMecionis, Audrius$$uFermilab$$uVilnius U.$$vAlso at Vilnius University, Vilnius, Lithuania
002798134 700__ $$aMeijers, Frans$$uCERN
002798134 700__ $$aMeschi, Emilio$$uCERN
002798134 700__ $$aMommsen, Remigius K$$uFermilab
002798134 700__ $$aMor, Keyshav$$uCERN
002798134 700__ $$aMorovic, Srecko$$uUC, San Diego
002798134 700__ $$aOrsini, Luciano$$uCERN
002798134 700__ $$aPapakrivopoulos, Ioannis$$uNatl. Tech. U., Athens$$uCERN$$vAlso at CERN, Geneva, Switzerland
002798134 700__ $$aPaus, Christoph$$uMIT
002798134 700__ $$aPetrucci, Andrea$$uUC, San Diego
002798134 700__ $$aPieri, Marco$$uUC, San Diego
002798134 700__ $$aRabady, Dinyar$$uCERN
002798134 700__ $$aRaychinov, Kolyo$$uCERN
002798134 700__ $$aRacz, Attila$$uCERN
002798134 700__ $$aRodriguez-Garcia, Alvaro$$uCERN
002798134 700__ $$aSakulin, Hannes$$uCERN
002798134 700__ $$aSchwick, Christoph$$uCERN
002798134 700__ $$aSimelevicius, Dainius$$uVilnius U.$$uCERN$$vAlso at CERN, Geneva, Switzerland
002798134 700__ $$aSoursos, Panagiotis$$uCERN
002798134 700__ $$aStahl, Andre$$uRice U.
002798134 700__ $$aStankevicius, Mantas$$uFermilab$$uVilnius U.$$vAlso at Vilnius University, Vilnius, Lithuania
002798134 700__ $$aSuthakar, Uthayanath$$uCERN
002798134 700__ $$aVazquez-Velez, Cristina$$uCERN
002798134 700__ $$aZahid, Awais$$uCERN
002798134 700__ $$aZejdl, Petr$$uFermilab$$uCERN$$vAlso at CERN, Geneva, Switzerland
002798134 710__ $$5PH
002798134 710__ $$gCMS Collaboration
002798134 773__ $$01830716$$c01032$$pEPJ Web Conf.$$v245$$wC19-11-04$$y2020
002798134 8564_ $$82342471$$s1505408$$uhttps://cds.cern.ch/record/2798134/files/CR2020_076.pdf
002798134 916__ $$sn$$w202151
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002798134 980__ $$aARTICLE
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