The CMS trigger system
This paper describes the CMS trigger system and its performance during Run 1 of the LHC. The trigger system consists of two levels designed to select events of potential physics interest from a GHz (MHz) interaction rate of proton-proton (heavy ion) collisions. The first level of the trigger is impl...
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| Veröffentlicht in: | Journal of instrumentation 2017-01, Vol.12 (1), p.P01020-P01020 |
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| creator | Khachatryan, V. Sirunyan, A.M. Tumasyan, A. Adam, W. Asilar, E. Bergauer, T. Brandstetter, J. Brondolin, E. Dragicevic, M. Erö, J. Flechl, M. Friedl, M. Frühwirth, R. Ghete, V.M. Hartl, C. Hörmann, N. Hrubec, J. Jeitler, M. Knünz, V. König, A. Krammer, M. Krätschmer, I. Liko, D. Matsushita, T. Mikulec, I. Rabady, D. Rahbaran, B. Rohringer, H. Schieck, J. Schöfbeck, R. Strauss, J. Treberer-Treberspurg, W. Waltenberger, W. Wulz, C.-E. Mossolov, V. Shumeiko, N. Gonzalez, J. Suarez Alderweireldt, S. Cornelis, T. Wolf, E.A. De Janssen, X. Knutsson, A. Lauwers, J. Luyckx, S. Klundert, M. Van De Haevermaet, H. Van Mechelen, P. Van Remortel, N. Van Spilbeeck, A. Van Zeid, S. Abu Blekman, F. D'Hondt, J. Daci, N. Bruyn, I. De Deroover, K. Heracleous, N. Keaveney, J. Lowette, S. Moreels, L. Olbrechts, A. Python, Q. Strom, D. Tavernier, S. Doninck, W. Van Mulders, P. Van Onsem, G.P. Van Parijs, I. Van Barria, P. Brun, H. Caillol, C. Clerbaux, B. Lentdecker, G. De Fasanella, G. Favart, L. Grebenyuk, A. Karapostoli, G. Lenzi, T. Léonard, A. Maerschalk, T. Marinov, A. Perniè, L. Randle-conde, A. Reis, T. Seva, T. Velde, C. Vander Vanlaer, P. Yonamine, R. Zenoni, F. Zhang, F. Beernaert, K. Benucci, L. Cimmino, A. Crucy, S. Dobur, D. Fagot, A. Garcia, G. Gul, M. Mccartin, J. Rios, A.A. Ocampo Poyraz, D. |
| description | This paper describes the CMS trigger system and its performance during Run 1 of the LHC. The trigger system consists of two levels designed to select events of potential physics interest from a GHz (MHz) interaction rate of proton-proton (heavy ion) collisions. The first level of the trigger is implemented in hardware, and selects events containing detector signals consistent with an electron, photon, muon, [tau] lepton, jet, or missing transverse energy. A programmable menu of up to 128 object-based algorithms is used to select events for subsequent processing. The trigger thresholds are adjusted to the LHC instantaneous luminosity during data taking in order to restrict the output rate to 100 kHz, the upper limit imposed by the CMS readout electronics. The second level, implemented in software, further refines the purity of the output stream, selecting an average rate of 400 Hz for offline event storage. The objectives, strategy and performance of the trigger system during the LHC Run 1 are described. |
| doi_str_mv | 10.1088/1748-0221/12/01/P01020 |
| format | Article |
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Suarez ; Alderweireldt, S. ; Cornelis, T. ; Wolf, E.A. De ; Janssen, X. ; Knutsson, A. ; Lauwers, J. ; Luyckx, S. ; Klundert, M. Van De ; Haevermaet, H. Van ; Mechelen, P. Van ; Remortel, N. Van ; Spilbeeck, A. Van ; Zeid, S. Abu ; Blekman, F. ; D'Hondt, J. ; Daci, N. ; Bruyn, I. De ; Deroover, K. ; Heracleous, N. ; Keaveney, J. ; Lowette, S. ; Moreels, L. ; Olbrechts, A. ; Python, Q. ; Strom, D. ; Tavernier, S. ; Doninck, W. Van ; Mulders, P. Van ; Onsem, G.P. Van ; Parijs, I. Van ; Barria, P. ; Brun, H. ; Caillol, C. ; Clerbaux, B. ; Lentdecker, G. De ; Fasanella, G. ; Favart, L. ; Grebenyuk, A. ; Karapostoli, G. ; Lenzi, T. ; Léonard, A. ; Maerschalk, T. ; Marinov, A. ; Perniè, L. ; Randle-conde, A. ; Reis, T. ; Seva, T. ; Velde, C. Vander ; Vanlaer, P. ; Yonamine, R. ; Zenoni, F. ; Zhang, F. ; Beernaert, K. ; Benucci, L. ; Cimmino, A. ; Crucy, S. ; Dobur, D. ; Fagot, A. ; Garcia, G. ; Gul, M. ; Mccartin, J. ; Rios, A.A. 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De ; Deroover, K. ; Heracleous, N. ; Keaveney, J. ; Lowette, S. ; Moreels, L. ; Olbrechts, A. ; Python, Q. ; Strom, D. ; Tavernier, S. ; Doninck, W. Van ; Mulders, P. Van ; Onsem, G.P. Van ; Parijs, I. Van ; Barria, P. ; Brun, H. ; Caillol, C. ; Clerbaux, B. ; Lentdecker, G. De ; Fasanella, G. ; Favart, L. ; Grebenyuk, A. ; Karapostoli, G. ; Lenzi, T. ; Léonard, A. ; Maerschalk, T. ; Marinov, A. ; Perniè, L. ; Randle-conde, A. ; Reis, T. ; Seva, T. ; Velde, C. Vander ; Vanlaer, P. ; Yonamine, R. ; Zenoni, F. ; Zhang, F. ; Beernaert, K. ; Benucci, L. ; Cimmino, A. ; Crucy, S. ; Dobur, D. ; Fagot, A. ; Garcia, G. ; Gul, M. ; Mccartin, J. ; Rios, A.A. Ocampo ; Poyraz, D. ; Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States) ; Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States) ; Argonne National Lab. (ANL), Argonne, IL (United States)</creatorcontrib><description>This paper describes the CMS trigger system and its performance during Run 1 of the LHC. The trigger system consists of two levels designed to select events of potential physics interest from a GHz (MHz) interaction rate of proton-proton (heavy ion) collisions. The first level of the trigger is implemented in hardware, and selects events containing detector signals consistent with an electron, photon, muon, [tau] lepton, jet, or missing transverse energy. A programmable menu of up to 128 object-based algorithms is used to select events for subsequent processing. The trigger thresholds are adjusted to the LHC instantaneous luminosity during data taking in order to restrict the output rate to 100 kHz, the upper limit imposed by the CMS readout electronics. The second level, implemented in software, further refines the purity of the output stream, selecting an average rate of 400 Hz for offline event storage. 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(ANL), Argonne, IL (United States)</creatorcontrib><title>The CMS trigger system</title><title>Journal of instrumentation</title><description>This paper describes the CMS trigger system and its performance during Run 1 of the LHC. The trigger system consists of two levels designed to select events of potential physics interest from a GHz (MHz) interaction rate of proton-proton (heavy ion) collisions. The first level of the trigger is implemented in hardware, and selects events containing detector signals consistent with an electron, photon, muon, [tau] lepton, jet, or missing transverse energy. A programmable menu of up to 128 object-based algorithms is used to select events for subsequent processing. The trigger thresholds are adjusted to the LHC instantaneous luminosity during data taking in order to restrict the output rate to 100 kHz, the upper limit imposed by the CMS readout electronics. The second level, implemented in software, further refines the purity of the output stream, selecting an average rate of 400 Hz for offline event storage. The objectives, strategy and performance of the trigger system during the LHC Run 1 are described.</description><subject>Algorithms</subject><subject>Computer programs</subject><subject>Detectors</subject><subject>Electronics</subject><subject>High Energy Physics - Experiment</subject><subject>Instrumentation</subject><subject>Instrumentation and Detectors</subject><subject>INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY</subject><subject>Large Hadron Collider</subject><subject>Luminosity</subject><subject>Physics</subject><subject>PHYSICS OF ELEMENTARY PARTICLES AND FIELDS</subject><subject>Solenoids</subject><issn>1748-0221</issn><issn>1748-0221</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><recordid>eNpNkE1LAzEQQIMoWKtXj1I8CbLuTD7241hKtUJFwXoOSUzale1uTVKh_95dVoqnDJnHG3iE3CA8IBRFijkvEqAUU6QpYPoGCBROyOi4OP03n5OLEL4ARCk4jMj1amMns5f3SfTVem39JBxCtNtLcuZUHezV3zsmH4_z1WyRLF-fnmfTZWI4EzHhgmlwudHOOYrGOq1K_WlK7ZBZoMYYpVHQnKPgpaE6F0xxm3V_oPOsc4zJ7eBtQ6xkMFW0ZmPaprEmSmS0zCHroPsB2qha7ny1Vf4gW1XJxXQpq4bumARkGRWY_2BH3w30zrffexui3FbB2LpWjW33QWJRshJ5kfXibECNb0Pw1h3tCLJvK_tsss8mkXZH5NCW_QImqGkK</recordid><startdate>20170124</startdate><enddate>20170124</enddate><creator>Khachatryan, V.</creator><creator>Sirunyan, A.M.</creator><creator>Tumasyan, A.</creator><creator>Adam, W.</creator><creator>Asilar, E.</creator><creator>Bergauer, T.</creator><creator>Brandstetter, J.</creator><creator>Brondolin, E.</creator><creator>Dragicevic, M.</creator><creator>Erö, J.</creator><creator>Flechl, M.</creator><creator>Friedl, M.</creator><creator>Frühwirth, R.</creator><creator>Ghete, V.M.</creator><creator>Hartl, C.</creator><creator>Hörmann, N.</creator><creator>Hrubec, J.</creator><creator>Jeitler, M.</creator><creator>Knünz, V.</creator><creator>König, A.</creator><creator>Krammer, M.</creator><creator>Krätschmer, I.</creator><creator>Liko, D.</creator><creator>Matsushita, T.</creator><creator>Mikulec, I.</creator><creator>Rabady, D.</creator><creator>Rahbaran, B.</creator><creator>Rohringer, H.</creator><creator>Schieck, J.</creator><creator>Schöfbeck, R.</creator><creator>Strauss, J.</creator><creator>Treberer-Treberspurg, W.</creator><creator>Waltenberger, W.</creator><creator>Wulz, C.-E.</creator><creator>Mossolov, V.</creator><creator>Shumeiko, N.</creator><creator>Gonzalez, J. 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Ocampo</creator><creator>Poyraz, D.</creator><general>IOP Publishing</general><general>Institute of Physics (IOP)</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7U5</scope><scope>8FD</scope><scope>L7M</scope><scope>1XC</scope><scope>VOOES</scope><scope>OIOZB</scope><scope>OTOTI</scope><orcidid>https://orcid.org/0000-0001-7476-0158</orcidid><orcidid>https://orcid.org/0000-0002-4015-4376</orcidid><orcidid>https://orcid.org/0000-0003-3154-3123</orcidid><orcidid>https://orcid.org/0000-0001-6185-2045</orcidid><orcidid>https://orcid.org/0000-0001-9580-683X</orcidid><orcidid>https://orcid.org/0000-0002-1275-7292</orcidid><orcidid>https://orcid.org/0000-0003-0885-824X</orcidid><orcidid>https://orcid.org/0000-0001-6027-4511</orcidid><orcidid>https://orcid.org/0000-0002-2939-5646</orcidid><orcidid>https://orcid.org/0000-0002-5230-8387</orcidid><orcidid>https://orcid.org/0000-0002-5524-880X</orcidid><orcidid>https://orcid.org/0000-0003-3090-2948</orcidid><orcidid>https://orcid.org/0000-0002-1935-623X</orcidid></search><sort><creationdate>20170124</creationdate><title>The CMS trigger system</title><author>Khachatryan, V. ; Sirunyan, A.M. ; Tumasyan, A. ; Adam, W. ; Asilar, E. ; Bergauer, T. ; Brandstetter, J. ; Brondolin, E. ; Dragicevic, M. ; Erö, J. ; Flechl, M. ; Friedl, M. ; Frühwirth, R. ; Ghete, V.M. ; Hartl, C. ; Hörmann, N. ; Hrubec, J. ; Jeitler, M. ; Knünz, V. ; König, A. ; Krammer, M. ; Krätschmer, I. ; Liko, D. ; Matsushita, T. ; Mikulec, I. ; Rabady, D. ; Rahbaran, B. ; Rohringer, H. ; Schieck, J. ; Schöfbeck, R. ; Strauss, J. ; Treberer-Treberspurg, W. ; Waltenberger, W. ; Wulz, C.-E. ; Mossolov, V. ; Shumeiko, N. ; Gonzalez, J. Suarez ; Alderweireldt, S. ; Cornelis, T. ; Wolf, E.A. De ; Janssen, X. ; Knutsson, A. ; Lauwers, J. ; Luyckx, S. ; Klundert, M. Van De ; Haevermaet, H. Van ; Mechelen, P. Van ; Remortel, N. Van ; Spilbeeck, A. Van ; Zeid, S. Abu ; Blekman, F. ; D'Hondt, J. ; Daci, N. ; Bruyn, I. De ; Deroover, K. ; Heracleous, N. ; Keaveney, J. ; Lowette, S. ; Moreels, L. ; Olbrechts, A. ; Python, Q. ; Strom, D. ; Tavernier, S. ; Doninck, W. Van ; Mulders, P. Van ; Onsem, G.P. Van ; Parijs, I. Van ; Barria, P. ; Brun, H. ; Caillol, C. ; Clerbaux, B. ; Lentdecker, G. De ; Fasanella, G. ; Favart, L. ; Grebenyuk, A. ; Karapostoli, G. ; Lenzi, T. ; Léonard, A. ; Maerschalk, T. ; Marinov, A. ; Perniè, L. ; Randle-conde, A. ; Reis, T. ; Seva, T. ; Velde, C. Vander ; Vanlaer, P. ; Yonamine, R. ; Zenoni, F. ; Zhang, F. ; Beernaert, K. ; Benucci, L. ; Cimmino, A. ; Crucy, S. ; Dobur, D. ; Fagot, A. ; Garcia, G. ; Gul, M. ; Mccartin, J. ; Rios, A.A. Ocampo ; Poyraz, D.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c435t-453b0f7cbfff21cefba9bdc9bf13e02cccab152741549c2b753a4e6b150b76c43</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Algorithms</topic><topic>Computer programs</topic><topic>Detectors</topic><topic>Electronics</topic><topic>High Energy Physics - Experiment</topic><topic>Instrumentation</topic><topic>Instrumentation and Detectors</topic><topic>INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY</topic><topic>Large Hadron Collider</topic><topic>Luminosity</topic><topic>Physics</topic><topic>PHYSICS OF ELEMENTARY PARTICLES AND FIELDS</topic><topic>Solenoids</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Khachatryan, V.</creatorcontrib><creatorcontrib>Sirunyan, A.M.</creatorcontrib><creatorcontrib>Tumasyan, A.</creatorcontrib><creatorcontrib>Adam, W.</creatorcontrib><creatorcontrib>Asilar, E.</creatorcontrib><creatorcontrib>Bergauer, T.</creatorcontrib><creatorcontrib>Brandstetter, J.</creatorcontrib><creatorcontrib>Brondolin, E.</creatorcontrib><creatorcontrib>Dragicevic, M.</creatorcontrib><creatorcontrib>Erö, J.</creatorcontrib><creatorcontrib>Flechl, M.</creatorcontrib><creatorcontrib>Friedl, M.</creatorcontrib><creatorcontrib>Frühwirth, R.</creatorcontrib><creatorcontrib>Ghete, V.M.</creatorcontrib><creatorcontrib>Hartl, C.</creatorcontrib><creatorcontrib>Hörmann, N.</creatorcontrib><creatorcontrib>Hrubec, J.</creatorcontrib><creatorcontrib>Jeitler, M.</creatorcontrib><creatorcontrib>Knünz, V.</creatorcontrib><creatorcontrib>König, A.</creatorcontrib><creatorcontrib>Krammer, M.</creatorcontrib><creatorcontrib>Krätschmer, I.</creatorcontrib><creatorcontrib>Liko, D.</creatorcontrib><creatorcontrib>Matsushita, T.</creatorcontrib><creatorcontrib>Mikulec, I.</creatorcontrib><creatorcontrib>Rabady, D.</creatorcontrib><creatorcontrib>Rahbaran, B.</creatorcontrib><creatorcontrib>Rohringer, H.</creatorcontrib><creatorcontrib>Schieck, J.</creatorcontrib><creatorcontrib>Schöfbeck, R.</creatorcontrib><creatorcontrib>Strauss, J.</creatorcontrib><creatorcontrib>Treberer-Treberspurg, W.</creatorcontrib><creatorcontrib>Waltenberger, W.</creatorcontrib><creatorcontrib>Wulz, C.-E.</creatorcontrib><creatorcontrib>Mossolov, V.</creatorcontrib><creatorcontrib>Shumeiko, N.</creatorcontrib><creatorcontrib>Gonzalez, J. Suarez</creatorcontrib><creatorcontrib>Alderweireldt, S.</creatorcontrib><creatorcontrib>Cornelis, T.</creatorcontrib><creatorcontrib>Wolf, E.A. De</creatorcontrib><creatorcontrib>Janssen, X.</creatorcontrib><creatorcontrib>Knutsson, A.</creatorcontrib><creatorcontrib>Lauwers, J.</creatorcontrib><creatorcontrib>Luyckx, S.</creatorcontrib><creatorcontrib>Klundert, M. Van De</creatorcontrib><creatorcontrib>Haevermaet, H. Van</creatorcontrib><creatorcontrib>Mechelen, P. Van</creatorcontrib><creatorcontrib>Remortel, N. Van</creatorcontrib><creatorcontrib>Spilbeeck, A. Van</creatorcontrib><creatorcontrib>Zeid, S. Abu</creatorcontrib><creatorcontrib>Blekman, F.</creatorcontrib><creatorcontrib>D'Hondt, J.</creatorcontrib><creatorcontrib>Daci, N.</creatorcontrib><creatorcontrib>Bruyn, I. De</creatorcontrib><creatorcontrib>Deroover, K.</creatorcontrib><creatorcontrib>Heracleous, N.</creatorcontrib><creatorcontrib>Keaveney, J.</creatorcontrib><creatorcontrib>Lowette, S.</creatorcontrib><creatorcontrib>Moreels, L.</creatorcontrib><creatorcontrib>Olbrechts, A.</creatorcontrib><creatorcontrib>Python, Q.</creatorcontrib><creatorcontrib>Strom, D.</creatorcontrib><creatorcontrib>Tavernier, S.</creatorcontrib><creatorcontrib>Doninck, W. Van</creatorcontrib><creatorcontrib>Mulders, P. Van</creatorcontrib><creatorcontrib>Onsem, G.P. Van</creatorcontrib><creatorcontrib>Parijs, I. Van</creatorcontrib><creatorcontrib>Barria, P.</creatorcontrib><creatorcontrib>Brun, H.</creatorcontrib><creatorcontrib>Caillol, C.</creatorcontrib><creatorcontrib>Clerbaux, B.</creatorcontrib><creatorcontrib>Lentdecker, G. De</creatorcontrib><creatorcontrib>Fasanella, G.</creatorcontrib><creatorcontrib>Favart, L.</creatorcontrib><creatorcontrib>Grebenyuk, A.</creatorcontrib><creatorcontrib>Karapostoli, G.</creatorcontrib><creatorcontrib>Lenzi, T.</creatorcontrib><creatorcontrib>Léonard, A.</creatorcontrib><creatorcontrib>Maerschalk, T.</creatorcontrib><creatorcontrib>Marinov, A.</creatorcontrib><creatorcontrib>Perniè, L.</creatorcontrib><creatorcontrib>Randle-conde, A.</creatorcontrib><creatorcontrib>Reis, T.</creatorcontrib><creatorcontrib>Seva, T.</creatorcontrib><creatorcontrib>Velde, C. Vander</creatorcontrib><creatorcontrib>Vanlaer, P.</creatorcontrib><creatorcontrib>Yonamine, R.</creatorcontrib><creatorcontrib>Zenoni, F.</creatorcontrib><creatorcontrib>Zhang, F.</creatorcontrib><creatorcontrib>Beernaert, K.</creatorcontrib><creatorcontrib>Benucci, L.</creatorcontrib><creatorcontrib>Cimmino, A.</creatorcontrib><creatorcontrib>Crucy, S.</creatorcontrib><creatorcontrib>Dobur, D.</creatorcontrib><creatorcontrib>Fagot, A.</creatorcontrib><creatorcontrib>Garcia, G.</creatorcontrib><creatorcontrib>Gul, M.</creatorcontrib><creatorcontrib>Mccartin, J.</creatorcontrib><creatorcontrib>Rios, A.A. Ocampo</creatorcontrib><creatorcontrib>Poyraz, D.</creatorcontrib><creatorcontrib>Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)</creatorcontrib><creatorcontrib>Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)</creatorcontrib><creatorcontrib>Argonne National Lab. (ANL), Argonne, IL (United States)</creatorcontrib><collection>CrossRef</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Hyper Article en Ligne (HAL)</collection><collection>Hyper Article en Ligne (HAL) (Open Access)</collection><collection>OSTI.GOV - Hybrid</collection><collection>OSTI.GOV</collection><jtitle>Journal of instrumentation</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Khachatryan, V.</au><au>Sirunyan, A.M.</au><au>Tumasyan, A.</au><au>Adam, W.</au><au>Asilar, E.</au><au>Bergauer, T.</au><au>Brandstetter, J.</au><au>Brondolin, E.</au><au>Dragicevic, M.</au><au>Erö, J.</au><au>Flechl, M.</au><au>Friedl, M.</au><au>Frühwirth, R.</au><au>Ghete, V.M.</au><au>Hartl, C.</au><au>Hörmann, N.</au><au>Hrubec, J.</au><au>Jeitler, M.</au><au>Knünz, V.</au><au>König, A.</au><au>Krammer, M.</au><au>Krätschmer, I.</au><au>Liko, D.</au><au>Matsushita, T.</au><au>Mikulec, I.</au><au>Rabady, D.</au><au>Rahbaran, B.</au><au>Rohringer, H.</au><au>Schieck, J.</au><au>Schöfbeck, R.</au><au>Strauss, J.</au><au>Treberer-Treberspurg, W.</au><au>Waltenberger, W.</au><au>Wulz, C.-E.</au><au>Mossolov, V.</au><au>Shumeiko, N.</au><au>Gonzalez, J. Suarez</au><au>Alderweireldt, S.</au><au>Cornelis, T.</au><au>Wolf, E.A. De</au><au>Janssen, X.</au><au>Knutsson, A.</au><au>Lauwers, J.</au><au>Luyckx, S.</au><au>Klundert, M. Van De</au><au>Haevermaet, H. Van</au><au>Mechelen, P. Van</au><au>Remortel, N. Van</au><au>Spilbeeck, A. Van</au><au>Zeid, S. Abu</au><au>Blekman, F.</au><au>D'Hondt, J.</au><au>Daci, N.</au><au>Bruyn, I. De</au><au>Deroover, K.</au><au>Heracleous, N.</au><au>Keaveney, J.</au><au>Lowette, S.</au><au>Moreels, L.</au><au>Olbrechts, A.</au><au>Python, Q.</au><au>Strom, D.</au><au>Tavernier, S.</au><au>Doninck, W. Van</au><au>Mulders, P. Van</au><au>Onsem, G.P. Van</au><au>Parijs, I. Van</au><au>Barria, P.</au><au>Brun, H.</au><au>Caillol, C.</au><au>Clerbaux, B.</au><au>Lentdecker, G. De</au><au>Fasanella, G.</au><au>Favart, L.</au><au>Grebenyuk, A.</au><au>Karapostoli, G.</au><au>Lenzi, T.</au><au>Léonard, A.</au><au>Maerschalk, T.</au><au>Marinov, A.</au><au>Perniè, L.</au><au>Randle-conde, A.</au><au>Reis, T.</au><au>Seva, T.</au><au>Velde, C. Vander</au><au>Vanlaer, P.</au><au>Yonamine, R.</au><au>Zenoni, F.</au><au>Zhang, F.</au><au>Beernaert, K.</au><au>Benucci, L.</au><au>Cimmino, A.</au><au>Crucy, S.</au><au>Dobur, D.</au><au>Fagot, A.</au><au>Garcia, G.</au><au>Gul, M.</au><au>Mccartin, J.</au><au>Rios, A.A. Ocampo</au><au>Poyraz, D.</au><aucorp>Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)</aucorp><aucorp>Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)</aucorp><aucorp>Argonne National Lab. (ANL), Argonne, IL (United States)</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The CMS trigger system</atitle><jtitle>Journal of instrumentation</jtitle><date>2017-01-24</date><risdate>2017</risdate><volume>12</volume><issue>1</issue><spage>P01020</spage><epage>P01020</epage><pages>P01020-P01020</pages><issn>1748-0221</issn><eissn>1748-0221</eissn><abstract>This paper describes the CMS trigger system and its performance during Run 1 of the LHC. The trigger system consists of two levels designed to select events of potential physics interest from a GHz (MHz) interaction rate of proton-proton (heavy ion) collisions. The first level of the trigger is implemented in hardware, and selects events containing detector signals consistent with an electron, photon, muon, [tau] lepton, jet, or missing transverse energy. A programmable menu of up to 128 object-based algorithms is used to select events for subsequent processing. The trigger thresholds are adjusted to the LHC instantaneous luminosity during data taking in order to restrict the output rate to 100 kHz, the upper limit imposed by the CMS readout electronics. The second level, implemented in software, further refines the purity of the output stream, selecting an average rate of 400 Hz for offline event storage. The objectives, strategy and performance of the trigger system during the LHC Run 1 are described.</abstract><cop>United States</cop><pub>IOP Publishing</pub><doi>10.1088/1748-0221/12/01/P01020</doi><orcidid>https://orcid.org/0000-0001-7476-0158</orcidid><orcidid>https://orcid.org/0000-0002-4015-4376</orcidid><orcidid>https://orcid.org/0000-0003-3154-3123</orcidid><orcidid>https://orcid.org/0000-0001-6185-2045</orcidid><orcidid>https://orcid.org/0000-0001-9580-683X</orcidid><orcidid>https://orcid.org/0000-0002-1275-7292</orcidid><orcidid>https://orcid.org/0000-0003-0885-824X</orcidid><orcidid>https://orcid.org/0000-0001-6027-4511</orcidid><orcidid>https://orcid.org/0000-0002-2939-5646</orcidid><orcidid>https://orcid.org/0000-0002-5230-8387</orcidid><orcidid>https://orcid.org/0000-0002-5524-880X</orcidid><orcidid>https://orcid.org/0000-0003-3090-2948</orcidid><orcidid>https://orcid.org/0000-0002-1935-623X</orcidid><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1748-0221 |
| ispartof | Journal of instrumentation, 2017-01, Vol.12 (1), p.P01020-P01020 |
| issn | 1748-0221 1748-0221 |
| language | eng |
| recordid | cdi_osti_scitechconnect_1329706 |
| source | IOP Publishing Journals; Institute of Physics (IOP) Journals - HEAL-Link |
| subjects | Algorithms Computer programs Detectors Electronics High Energy Physics - Experiment Instrumentation Instrumentation and Detectors INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY Large Hadron Collider Luminosity Physics PHYSICS OF ELEMENTARY PARTICLES AND FIELDS Solenoids |
| title | The CMS trigger system |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-31T19%3A45%3A43IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_osti_&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=The%20CMS%20trigger%20system&rft.jtitle=Journal%20of%20instrumentation&rft.au=Khachatryan,%20V.&rft.aucorp=Fermi%20National%20Accelerator%20Lab.%20(FNAL),%20Batavia,%20IL%20(United%20States)&rft.date=2017-01-24&rft.volume=12&rft.issue=1&rft.spage=P01020&rft.epage=P01020&rft.pages=P01020-P01020&rft.issn=1748-0221&rft.eissn=1748-0221&rft_id=info:doi/10.1088/1748-0221/12/01/P01020&rft_dat=%3Cproquest_osti_%3E1893914866%3C/proquest_osti_%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=1893914866&rft_id=info:pmid/&rfr_iscdi=true |