Commissioning of the CMS High Level Trigger

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

doi:10.1088/1748-0221/4/10/p10005

Cited by 4 publications

(3 citation statements)

References 12 publications

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“…CORAL has recently been and continues to be the most active of the PF sub-projects. To start with, this is the only package used by all three experiments (for conditions data, via COOL by ATLAS [16] and LHCb [17] and directly by CMS [18]; for event tags, via POOL by ATLAS [19]; for geometry and configuration data, directly by ATLAS [20,21] and CMS [22,23]). The support load is high also because of CORAL's role as the gateway to relational databases.…”

Section: Coral -The Common Abstraction Layer For Accessing Relationalmentioning

confidence: 99%

LCG Persistency Framework (CORAL, COOL, POOL): Status and Outlook in 2012

Trentadue

Clemencic

Dykstra

et al. 2012

J. Phys.: Conf. Ser.

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The Persistency Framework consists of three software packages (CORAL, COOL and POOL) addressing the data access requirements of the LHC experiments in different areas. It is the result of the collaboration between the CERN IT Department and the three experiments (ATLAS, CMS and LHCb) that use this software to access their data. POOL is a hybrid technology store for C++ objects, metadata catalogs and collections. CORAL is a relational database abstraction layer with an SQL-free API. COOL provides specific software tools and components for the handling of conditions data. This paper reports on the status and outlook of the project and reviews in detail the usage of each package in the three experiments. 10 The author is a member of the LHCb Collaboration. 11 The author is a member of the CMS Collaboration. 12 The author is a member of the ATLAS Collaboration.

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Section: Coral -The Common Abstraction Layer For Accessing Relationalmentioning

confidence: 99%

LCG Persistency Framework (CORAL, COOL, POOL): Status and Outlook in 2012

Trentadue

Clemencic

Dykstra

et al. 2012

J. Phys.: Conf. Ser.

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“…It operates with negligible deadtime and synchronously with the LHC bunch crossing frequency of 40 MHz. The High Level Trigger (HLT) is implemented across a large cluster of the order of a thousand commercial computers, referred to as the event filter farm [5], and provides further rate reduction to O(100) Hz using filtering software applied to the full granularity data acquired from all detectors. Complete events for the HLT are assembled from the fragments sent from each detector front-end module through a complex of switched networks and "builder units" also residing in the event filter farm.…”

Section: Compact Muon Solenoidmentioning

confidence: 99%

Commissioning of the CMS experiment and the cosmic run at four tesla

Chatrchyan¹,

Khachatryan²,

Sirunyan³

et al. 2010

J. Inst.

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The CMS Collaboration conducted a month-long data-taking exercise known as the Cosmic Run At Four Tesla in late 2008 in order to complete the commissioning of the experiment for extended operation. The operational lessons resulting from this exercise were addressed in the subsequent shutdown to better prepare CMS for LHC beams in 2009. The cosmic data collected have been invaluable to study the performance of the detectors, to commission the alignment and calibration techniques, and to make several cosmic ray measurements. The experimental setup, conditions, and principal achievements from this data-taking exercise are described along with a review of the preceding integration activities.

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“…5). Studies using full simulation have shown that a precision of ∼ 0.5% can be achieved in the barrel using ∼ 5 fb −1 of data [18].…”

Section: Calorimeter Calibrationmentioning

confidence: 99%

Status and Commissioning of the CMS Experiment

Buchmüller¹,

Schilling²

2007

Nuclear Physics B - Proceedings Supplements

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After a brief overview of the Compact Muon Solenoid (CMS) experiment, the status of construction and installation is described in the first part of the note. The second part of the document is devoted to a discussion of the general commissioning strategy of the CMS experiment, with a particular emphasis on trigger, calibration and alignment. Aspects of b-physics, as well as examples for early physics with CMS are also presented. CMS will be ready for data taking in time for the first collisions in the Large Hadron Collider (LHC) at CERN in late 2007.Comment: Talks given at the 11th Intl. Conference on B-Physics at Hadron Machines BEAUTY 2006, Oxford (UK), September 200

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Commissioning of the CMS High Level Trigger

Cited by 4 publications

References 12 publications

LCG Persistency Framework (CORAL, COOL, POOL): Status and Outlook in 2012

LCG Persistency Framework (CORAL, COOL, POOL): Status and Outlook in 2012

Commissioning of the CMS experiment and the cosmic run at four tesla

Status and Commissioning of the CMS Experiment

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