The CMS Regional Calorimeter Trigger Electronics Integration

Author

Smith, W.H. ; Dasu, S. ; Fobes, R. ; Gorski, T. ; Grothe, M. ; Jaworski, M. ; Klabbers, P. ; Lackey, J. ; Ott, G. ; Robl, P.

Author_Institution

Dept. of Phys., Wisconsin Univ., Madison, WI

Volume

3

fYear

2006

fDate

Oct. 29 2006-Nov. 1 2006

Firstpage

1406

Lastpage

1410

Abstract

The electronics for the regional calorimeter trigger (RCT) of the Compact Muon Solenoid experiment (CMS) at the Large Hadron Collider (LHC) have been produced and tested, and are being integrated with the experiment at CERN. The RCT hardware consists of 18 double-sided crates containing custom boards, ASICs, and backplanes all running at 160 MHz frequency. The RCT receives 8 bit energies and a data quality bit on 1008 4times1.2 Gbaud copper links from the hadron calorimeter (HCAL) and the electromagnetic calorimeter (ECAL) trigger primitive generators (TPGs), accepting new events every 25 ns. RCT processing determines the jet region energies, and, sorted isolated and non-isolated electromagnetic objects, which are sent to the CMS global calorimeter trigger (GCT) for further processing. Before installation, both self-tests, using RCT jet capture card, and integration tests with TPG and GCT systems were performed. Their results of these tests and the RCT installation experience are described.

Keywords

nuclear electronics; particle calorimetry; trigger circuits; 160 MHz; CMS experiment; Compact Muon Solenoid; Large Hadron Collider; electromagnetic calorimeter; electronics integration; global calorimeter trigger; hadron calorimeter; jet capture card; regional calorimeter trigger; trigger primitive generators; Backplanes; Built-in self-test; Collision mitigation; Copper; Electronic equipment testing; Frequency; Hardware; Large Hadron Collider; Mesons; Solenoids;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record, 2006. IEEE

Conference_Location

San Diego, CA

ISSN

1095-7863

Print_ISBN

1-4244-0560-2

Electronic_ISBN

1095-7863

Type

conf

DOI

10.1109/NSSMIC.2006.354164

Filename

4179277