Commissioning of the CMS High Level Trigger

L. Agostino; G. Bauer; B. Beccati; U. Behrens; J. Berryhil; K. Biery; T. Bose; A. Brett; J. Branson; E. Cano; H. Cheung; M. Ciganek; S. Cittolin; J. A. Coarasa; B. Dahmes; C. Deldicque; E. Dusinberre; S. Erhan; D. Gigi; F. Glege; R. Gomez-Reino; J. Gutleber; D. Hatton; J. Laurens; C. Loizides; F. Ma; F. Meijers; E. Meschi; A. Meyer; R. K. Mommsen; R. Moser; V. O'Dell; A. Oh; L. Orsini; V. Patras; C. Paus; A. Petrucci; M. Pieri; A. Racz; H. Sakulin; M. Sani; P. Schieferdecker; C. Schwick; J. F S Margaleff; D. Shpakov; S. Simon; K. Sumorok; A. S. Yoon; P. Wittich; M. Zanetti

doi:10.1088/1748-0221/4/10/P10005

Commissioning of the CMS High Level Trigger

L. Agostino, G. Bauer, B. Beccati, U. Behrens, J. Berryhil, K. Biery, T. Bose, A. Brett, J. Branson, E. Cano, H. Cheung, M. Ciganek, S. Cittolin, J. A. Coarasa, B. Dahmes, C. Deldicque, E. Dusinberre, S. Erhan, D. Gigi, F. GlegeR. Gomez-Reino, J. Gutleber, D. Hatton, J. Laurens, C. Loizides, F. Ma, F. Meijers, E. Meschi, A. Meyer, R. K. Mommsen, R. Moser, V. O'Dell, A. Oh, L. Orsini, V. Patras, C. Paus, A. Petrucci, M. Pieri, A. Racz, H. Sakulin, M. Sani, P. Schieferdecker, C. Schwick, J. F S Margaleff, D. Shpakov, S. Simon, K. Sumorok, A. S. Yoon, P. Wittich, M. Zanetti

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

The CMS experiment will collect data from the proton-proton collisions delivered by the Large Hadron Collider (LHC) at a centre-of-mass energy up to 14 TeV. The CMS trigger system is designed to cope with unprecedented luminosities and LHC bunch-crossing rates up to 40 MHz. The unique CMS trigger architecture only employs two trigger levels. The Level-1 trigger is implemented using custom electronics, while the High Level Trigger (HLT) is based on software algorithms running on a large cluster of commercial processors, the Event Filter Farm. We present the major functionalities of the CMS High Level Trigger system as of the starting of LHC beams operations in September 2008. The validation of the HLT system in the online environment with Monte Carlo simulated data and its commissioning during cosmic rays data taking campaigns are discussed in detail. We conclude with the description of the HLT operations with the first circulating LHC beams before the incident occurred the 19th September 2008. © 2009 IOP Publishing Ltd and SISSA.

Original language	English
Title of host publication	Journal of Instrumentation\|J. Instrum.
Volume	4
DOIs	https://doi.org/10.1088/1748-0221/4/10/P10005
Publication status	Published - 2009

Keywords

Data acquisition concepts
Data processing methods
Online farms and online filtering
Trigger concepts and systems (hardware and software)

Access to Document

10.1088/1748-0221/4/10/P10005

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Agostino, L., Bauer, G., Beccati, B., Behrens, U., Berryhil, J., Biery, K., Bose, T., Brett, A., Branson, J., Cano, E., Cheung, H., Ciganek, M., Cittolin, S., Coarasa, J. A., Dahmes, B., Deldicque, C., Dusinberre, E., Erhan, S., Gigi, D., ... Zanetti, M. (2009). Commissioning of the CMS High Level Trigger. In Journal of Instrumentation|J. Instrum. (Vol. 4) https://doi.org/10.1088/1748-0221/4/10/P10005

@inproceedings{cc37c816de9640ec8ab36b431a85c0aa,

title = "Commissioning of the CMS High Level Trigger",

abstract = "The CMS experiment will collect data from the proton-proton collisions delivered by the Large Hadron Collider (LHC) at a centre-of-mass energy up to 14 TeV. The CMS trigger system is designed to cope with unprecedented luminosities and LHC bunch-crossing rates up to 40 MHz. The unique CMS trigger architecture only employs two trigger levels. The Level-1 trigger is implemented using custom electronics, while the High Level Trigger (HLT) is based on software algorithms running on a large cluster of commercial processors, the Event Filter Farm. We present the major functionalities of the CMS High Level Trigger system as of the starting of LHC beams operations in September 2008. The validation of the HLT system in the online environment with Monte Carlo simulated data and its commissioning during cosmic rays data taking campaigns are discussed in detail. We conclude with the description of the HLT operations with the first circulating LHC beams before the incident occurred the 19th September 2008. {\textcopyright} 2009 IOP Publishing Ltd and SISSA.",

keywords = "Data acquisition concepts, Data processing methods, Online farms and online filtering, Trigger concepts and systems (hardware and software)",

author = "L. Agostino and G. Bauer and B. Beccati and U. Behrens and J. Berryhil and K. Biery and T. Bose and A. Brett and J. Branson and E. Cano and H. Cheung and M. Ciganek and S. Cittolin and Coarasa, {J. A.} and B. Dahmes and C. Deldicque and E. Dusinberre and S. Erhan and D. Gigi and F. Glege and R. Gomez-Reino and J. Gutleber and D. Hatton and J. Laurens and C. Loizides and F. Ma and F. Meijers and E. Meschi and A. Meyer and Mommsen, {R. K.} and R. Moser and V. O'Dell and A. Oh and L. Orsini and V. Patras and C. Paus and A. Petrucci and M. Pieri and A. Racz and H. Sakulin and M. Sani and P. Schieferdecker and C. Schwick and Margaleff, {J. F S} and D. Shpakov and S. Simon and K. Sumorok and Yoon, {A. S.} and P. Wittich and M. Zanetti",

year = "2009",

doi = "10.1088/1748-0221/4/10/P10005",

language = "English",

volume = "4",

booktitle = "Journal of Instrumentation|J. Instrum.",

}

Agostino, L, Bauer, G, Beccati, B, Behrens, U, Berryhil, J, Biery, K, Bose, T, Brett, A, Branson, J, Cano, E, Cheung, H, Ciganek, M, Cittolin, S, Coarasa, JA, Dahmes, B, Deldicque, C, Dusinberre, E, Erhan, S, Gigi, D, Glege, F, Gomez-Reino, R, Gutleber, J, Hatton, D, Laurens, J, Loizides, C, Ma, F, Meijers, F, Meschi, E, Meyer, A, Mommsen, RK, Moser, R, O'Dell, V, Oh, A, Orsini, L, Patras, V, Paus, C, Petrucci, A, Pieri, M, Racz, A, Sakulin, H, Sani, M, Schieferdecker, P, Schwick, C, Margaleff, JFS, Shpakov, D, Simon, S, Sumorok, K, Yoon, AS, Wittich, P & Zanetti, M 2009, Commissioning of the CMS High Level Trigger. in Journal of Instrumentation|J. Instrum.. vol. 4. https://doi.org/10.1088/1748-0221/4/10/P10005

TY - GEN

T1 - Commissioning of the CMS High Level Trigger

AU - Agostino, L.

AU - Bauer, G.

AU - Beccati, B.

AU - Behrens, U.

AU - Berryhil, J.

AU - Biery, K.

AU - Bose, T.

AU - Brett, A.

AU - Branson, J.

AU - Cano, E.

AU - Cheung, H.

AU - Ciganek, M.

AU - Cittolin, S.

AU - Coarasa, J. A.

AU - Dahmes, B.

AU - Deldicque, C.

AU - Dusinberre, E.

AU - Erhan, S.

AU - Gigi, D.

AU - Glege, F.

AU - Gomez-Reino, R.

AU - Gutleber, J.

AU - Hatton, D.

AU - Laurens, J.

AU - Loizides, C.

AU - Ma, F.

AU - Meijers, F.

AU - Meschi, E.

AU - Meyer, A.

AU - Mommsen, R. K.

AU - Moser, R.

AU - O'Dell, V.

AU - Oh, A.

AU - Orsini, L.

AU - Patras, V.

AU - Paus, C.

AU - Petrucci, A.

AU - Pieri, M.

AU - Racz, A.

AU - Sakulin, H.

AU - Sani, M.

AU - Schieferdecker, P.

AU - Schwick, C.

AU - Margaleff, J. F S

AU - Shpakov, D.

AU - Simon, S.

AU - Sumorok, K.

AU - Yoon, A. S.

AU - Wittich, P.

AU - Zanetti, M.

PY - 2009

Y1 - 2009

N2 - The CMS experiment will collect data from the proton-proton collisions delivered by the Large Hadron Collider (LHC) at a centre-of-mass energy up to 14 TeV. The CMS trigger system is designed to cope with unprecedented luminosities and LHC bunch-crossing rates up to 40 MHz. The unique CMS trigger architecture only employs two trigger levels. The Level-1 trigger is implemented using custom electronics, while the High Level Trigger (HLT) is based on software algorithms running on a large cluster of commercial processors, the Event Filter Farm. We present the major functionalities of the CMS High Level Trigger system as of the starting of LHC beams operations in September 2008. The validation of the HLT system in the online environment with Monte Carlo simulated data and its commissioning during cosmic rays data taking campaigns are discussed in detail. We conclude with the description of the HLT operations with the first circulating LHC beams before the incident occurred the 19th September 2008. © 2009 IOP Publishing Ltd and SISSA.

AB - The CMS experiment will collect data from the proton-proton collisions delivered by the Large Hadron Collider (LHC) at a centre-of-mass energy up to 14 TeV. The CMS trigger system is designed to cope with unprecedented luminosities and LHC bunch-crossing rates up to 40 MHz. The unique CMS trigger architecture only employs two trigger levels. The Level-1 trigger is implemented using custom electronics, while the High Level Trigger (HLT) is based on software algorithms running on a large cluster of commercial processors, the Event Filter Farm. We present the major functionalities of the CMS High Level Trigger system as of the starting of LHC beams operations in September 2008. The validation of the HLT system in the online environment with Monte Carlo simulated data and its commissioning during cosmic rays data taking campaigns are discussed in detail. We conclude with the description of the HLT operations with the first circulating LHC beams before the incident occurred the 19th September 2008. © 2009 IOP Publishing Ltd and SISSA.

KW - Data acquisition concepts

KW - Data processing methods

KW - Online farms and online filtering

KW - Trigger concepts and systems (hardware and software)

U2 - 10.1088/1748-0221/4/10/P10005

DO - 10.1088/1748-0221/4/10/P10005

M3 - Conference contribution

VL - 4

BT - Journal of Instrumentation|J. Instrum.

ER -

Commissioning of the CMS High Level Trigger

Abstract

Keywords

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