40 MHz Level-1 Trigger Scouting for CMS
<jats:p>The 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 we...
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| Other Authors: | |
| Format: | Article |
| Language: | English |
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EDP Sciences
2022
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| Online Access: | https://hdl.handle.net/1721.1/142124 |
| _version_ | 1826212517474467840 |
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| author | Paus, Christoph M. E. Darlea, Georgiana-Lavinia Gomez-Ceballos, Guillelmo |
| author2 | Massachusetts Institute of Technology. Laboratory for Nuclear Science |
| author_facet | Massachusetts Institute of Technology. Laboratory for Nuclear Science Paus, Christoph M. E. Darlea, Georgiana-Lavinia Gomez-Ceballos, Guillelmo |
| author_sort | Paus, Christoph M. E. |
| collection | MIT |
| description | <jats:p>The 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.</jats:p> |
| first_indexed | 2024-09-23T15:24:28Z |
| format | Article |
| id | mit-1721.1/142124 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T15:24:28Z |
| publishDate | 2022 |
| publisher | EDP Sciences |
| record_format | dspace |
| spelling | mit-1721.1/1421242023-01-20T18:18:38Z 40 MHz Level-1 Trigger Scouting for CMS Paus, Christoph M. E. Darlea, Georgiana-Lavinia Gomez-Ceballos, Guillelmo Massachusetts Institute of Technology. Laboratory for Nuclear Science <jats:p>The 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.</jats:p> 2022-04-27T14:56:13Z 2022-04-27T14:56:13Z 2020 2022-04-27T14:47:10Z Article http://purl.org/eprint/type/ConferencePaper https://hdl.handle.net/1721.1/142124 Paus, Christoph. 2020. "40 MHz Level-1 Trigger Scouting for CMS." EPJ Web of Conferences, 245. en 10.1051/EPJCONF/202024501032 EPJ Web of Conferences Creative Commons Attribution 4.0 International license https://creativecommons.org/licenses/by/4.0/ application/pdf EDP Sciences EDP Sciences |
| spellingShingle | Paus, Christoph M. E. Darlea, Georgiana-Lavinia Gomez-Ceballos, Guillelmo 40 MHz Level-1 Trigger Scouting for CMS |
| title | 40 MHz Level-1 Trigger Scouting for CMS |
| title_full | 40 MHz Level-1 Trigger Scouting for CMS |
| title_fullStr | 40 MHz Level-1 Trigger Scouting for CMS |
| title_full_unstemmed | 40 MHz Level-1 Trigger Scouting for CMS |
| title_short | 40 MHz Level-1 Trigger Scouting for CMS |
| title_sort | 40 mhz level 1 trigger scouting for cms |
| url | https://hdl.handle.net/1721.1/142124 |
| work_keys_str_mv | AT pauschristophme 40mhzlevel1triggerscoutingforcms AT darleageorgianalavinia 40mhzlevel1triggerscoutingforcms AT gomezceballosguillelmo 40mhzlevel1triggerscoutingforcms |