CMS calorimeter trigger circuits

Author

Smith, W.H. ; Dasu, S. ; Jaworski, M. ; Lackey, J. ; Panescu, D. ; Temple, W.

Author_Institution

Wisconsin Univ., WI, USA

Volume

1

fYear

1995

Firstpage

592

Abstract

The CMS level 1 trigger decision is based in part upon local information from the level 1 calorimeter trigger about the presence of objects such as photons, electrons and jets, as well as global sums of E _t and missing E_t (to find neutrinos). The electron/photon trigger is based on the recognition of a large and isolated energy deposit in the electromagnetic calorimeter by asking for a small hadronic energy deposited in the HCAL in the cluster region. We present a description of the calorimeter regional trigger crates, the receiver card, the electron isolation card and the jet summary card

Keywords

application specific integrated circuits; calorimeters; data acquisition; detector circuits; high energy physics instrumentation computing; nuclear electronics; position sensitive particle detectors; scintillation counters; table lookup; trigger circuits; ASIC; CMS calorimeter; electron isolation card; electron/photon trigger; jet summary card; level 1 trigger; look up tables; receiver card; regional trigger crates; trigger circuits; Clustering algorithms; Collision mitigation; Dynamic range; Electrons; Hardware; Mesons; Neutrino sources; Poles and towers; Trigger circuits; Vectors;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium and Medical Imaging Conference Record, 1995., 1995 IEEE

Print_ISBN

0-7803-3180-X

Type

conf

DOI

10.1109/NSSMIC.1995.504330

Filename

504330