Trigger Rate Monitoring Tools at CMS
One of the major challenges for the Compact Muon Solenoid (CMS)experiment, is the task of reducing event rate from roughly 40 MHz down to a more manageable 1 kHz while keeping as many interesting physics events as possible. This is accomplished through the use of a Level-1 (L1) hardware based trigge...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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EDP Sciences
2019-01-01
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| Series: | EPJ Web of Conferences |
| Online Access: | https://www.epj-conferences.org/articles/epjconf/pdf/2019/19/epjconf_chep2018_01047.pdf |
| _version_ | 1819132278084730880 |
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| author | Wightman Andrew Smith Geoffrey Mohrman Kelci Mueller Charles |
| author_facet | Wightman Andrew Smith Geoffrey Mohrman Kelci Mueller Charles |
| author_sort | Wightman Andrew |
| collection | DOAJ |
| description | One of the major challenges for the Compact Muon Solenoid (CMS)experiment, is the task of reducing event rate from roughly 40 MHz down to a more manageable 1 kHz while keeping as many interesting physics events as possible. This is accomplished through the use of a Level-1 (L1) hardware based trigger as well as a software based High-Level Trigger (HLT). Monitoring and understanding the output rates of the L1 and HLT triggers is of key importance for determining the overall performance of the trigger system and is intimately tied to what type of data is being recorded for physics analyses. We present here a collection of tools used by CMS to monitor the L1 and HLT trigger rates. One of these tools is a script (run in the CMS control room) that gives valuable real-time feedback of trigger rates to the shift crew. Another useful tool is a plotting library, that is used for observing how trigger rates vary over a range of beam and detector conditions, in particular how the rates of individual triggers scale with event pile-up. |
| first_indexed | 2024-12-22T09:28:51Z |
| format | Article |
| id | doaj.art-d1a5c8972e81440c862457fe72d34433 |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-12-22T09:28:51Z |
| publishDate | 2019-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-d1a5c8972e81440c862457fe72d344332022-12-21T18:31:01ZengEDP SciencesEPJ Web of Conferences2100-014X2019-01-012140104710.1051/epjconf/201921401047epjconf_chep2018_01047Trigger Rate Monitoring Tools at CMSWightman AndrewSmith GeoffreyMohrman KelciMueller CharlesOne of the major challenges for the Compact Muon Solenoid (CMS)experiment, is the task of reducing event rate from roughly 40 MHz down to a more manageable 1 kHz while keeping as many interesting physics events as possible. This is accomplished through the use of a Level-1 (L1) hardware based trigger as well as a software based High-Level Trigger (HLT). Monitoring and understanding the output rates of the L1 and HLT triggers is of key importance for determining the overall performance of the trigger system and is intimately tied to what type of data is being recorded for physics analyses. We present here a collection of tools used by CMS to monitor the L1 and HLT trigger rates. One of these tools is a script (run in the CMS control room) that gives valuable real-time feedback of trigger rates to the shift crew. Another useful tool is a plotting library, that is used for observing how trigger rates vary over a range of beam and detector conditions, in particular how the rates of individual triggers scale with event pile-up.https://www.epj-conferences.org/articles/epjconf/pdf/2019/19/epjconf_chep2018_01047.pdf |
| spellingShingle | Wightman Andrew Smith Geoffrey Mohrman Kelci Mueller Charles Trigger Rate Monitoring Tools at CMS EPJ Web of Conferences |
| title | Trigger Rate Monitoring Tools at CMS |
| title_full | Trigger Rate Monitoring Tools at CMS |
| title_fullStr | Trigger Rate Monitoring Tools at CMS |
| title_full_unstemmed | Trigger Rate Monitoring Tools at CMS |
| title_short | Trigger Rate Monitoring Tools at CMS |
| title_sort | trigger rate monitoring tools at cms |
| url | https://www.epj-conferences.org/articles/epjconf/pdf/2019/19/epjconf_chep2018_01047.pdf |
| work_keys_str_mv | AT wightmanandrew triggerratemonitoringtoolsatcms AT smithgeoffrey triggerratemonitoringtoolsatcms AT mohrmankelci triggerratemonitoringtoolsatcms AT muellercharles triggerratemonitoringtoolsatcms |