Data filtering in the readout of the CMS Electromagnetic Calorimeter

Author

Almeida, N. ; Silva, P. ; Da Silva, J.C. ; Husejko, M. ; Jain, A. ; Musella, P. ; Mendes, A. ; Gallinaro, M. ; Varela, J. ; Faure, J.-L. ; Gras, P. ; Mandjavidze, I. ; Busson, P. ; Paganini, P.

Author_Institution

Lab. de Instrum. e Fisica Exp. de Particulas, Lisbon

fYear

2007

fDate

April 29 2007-May 4 2007

Firstpage

1

Lastpage

5

Abstract

For an efficient data taking, the electromagnetic calorimeter (ECAL) data of the CMS experiment must be limited to 10% of the full event size (1 MB). Other requirements limit the average data size to 2 kB per data acquisition link. These conditions imply a reduction factor of close to twenty on the data collected. The data filtering in the readout of the ECAL detector is discussed. Test beam data are used to study the digital filtering applied in the readout channels and a full detector simulation allows to estimate the energy thresholds to achieve the desired data suppression factor.

Keywords

data acquisition; particle calorimetry; CMS Electromagnetic Calorimeter readout; Compact Muon Solenoid; ECAL; LHC; Large Hadron Collider; data acquisition; data filtering; digital filtering; readout channels; trigger systems; Collision mitigation; Data acquisition; Detectors; Digital filters; Electron beams; Filtering algorithms; Large Hadron Collider; Photonic crystals; Strontium; Testing; CMS; Data Acquisition; Data Filtering; LHC; Selective Readout; Trigger System; Trigger Systems;

fLanguage

English

Publisher

ieee

Conference_Titel

Real-Time Conference, 2007 15th IEEE-NPSS

Conference_Location

Batavia, IL

Print_ISBN

978-1-4244-0866-5

Electronic_ISBN

978-1-4244-0867-2

Type

conf

DOI

10.1109/RTC.2007.4382838

Filename

4382838