The CMS High Level Trigger System
The CMS High Level Trigger System
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CMS 高级触发系统
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
J. Varela
中科院分区：
文献类型：
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作者：
A. Afaq;W. Badgett;G. Bauer;K. Biery;V. Boyer;J. Branson;A. Brett;E. Cano;A. Carboni;Harry Cheung;M. Ciganek;S. Cittolin;W. Dagenhart;S. Erhan;D. Gigi;F. Glege;R. Gomez;M. Gulmini;J. Gutleber;C. Jacobs;Jin Cheol Kim;M. Klute;Jim Kowalkowski;E. Lipeles;Juan Antonio Lopez Perez;G. Maron;F. Meijers;E. Meschi;R. Moser;E. G. Mlot;S. Murray;A. Oh;L. Orsini;C. Paus;A. Petrucci;M. Pieri;L. Pollet;A. Rácz;H. Sakulin;M. Sani;P. Schieferdecker;C. Schwick;E. Sexton;K. Sumorok;I. Suzuki;D. Tsirigkas;J. Varela
CMS数据采集(DAQ)系统依靠纯软件驱动的高级触发器(HLT)将100 kHz的完整1级接受率降低到约100 hz，用于存档和稍后的离线分析。HLT对由从CMS前端系统收集探测器数据的事件构建器收集的事件的全部信息进行操作。HLT软件由一系列重建和过滤模块组成，这些模块在由商用硬件构建的0(1000)个CPU群中执行。本文提出了CMS HLT的体系结构，它集成了在线环境下的CMS重构框架。介绍了配置、控制和监视Filter Farm的机制，以及在DAQ环境中验证过滤代码的过程。
The CMS Data Acquisition (DAQ) System relies on a purely software driven High Level Trigger (HLT) to reduce the full Level-1 accept rate of 100 kHz to approximately 100 Hz for archiving and later offline analysis. The HLT operates on the full information of events assembled by an event builder collecting detector data from the CMS front-end systems. The HLT software consists of a sequence of reconstruction and filtering modules executed on a farm of 0(1000) CPUs built from commodity hardware. This paper presents the architecture of the CMS HLT, which integrates the CMS reconstruction framework in the online environment. The mechanisms to configure, control, and monitor the Filter Farm and the procedures to validate the filtering code within the DAQ environment are described.