Performance of the CMS Level-1 Trigger during Commissioning with Cosmic Ray Muons

The CMS Level-1 trigger was used to select cosmic ray muons and LHC beam events during data-taking runs in 2008, and to estimate the level of detector noise. This paper describes the trigger components used, the algorithms that were executed, and the trigger synchronisation. Using data from extended...

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Bibliographic Details
Published in:Journal of instrumentation 2010, Vol.5
Main Authors: Chatrchyan, S., Khachatryan, V., Sirunyan, A.M., Adam, W., Arnold, B., Bergauer, H., Bergauer, T., Dragicevic, M., Eichberger, M., Ero, J., Friedl, M., Fruhwirth, R., Ghete, V.M., Hammer, J., Hansel, S., Hoch, M., Hormann, N., Hrubec, J., Jeitler, M., Kasieczka, G., Kastner, K., Krammer, M., Liko, D., Magrans de Abril, I., Mikulec, I., Mittermayr, F., Neuherz, B., Oberegger, M., Padrta, M., Pernicka, M., Rohringer, H., Schmid, S., Schofbeck, R., Schreiner, T., Stark, R., Steininger, H., Strauss, J., Taurok, A., Teischinger, F., Themel, T., Uhl, D., Waltenberger, W., Chekhovsky, V., Dvornikov, O., Emeliantchik, I., Litomin, A., Makarenko, V., Marfin, I., Mossolov, V., Shumeiko, N., Solin, A., Stefanovitch, R., Suarez Gonzalez, J., Tikhonov, A., Fedorov, A., Karneyeu, A., Korzhik, M., Panov, V., Zuyeuski, R., Kuchinsky, P., Beaumont, W., Benucci, L., Cardaci, M., de Wolf, E.A., Delmeire, E., Druzhkin, D., Hashemi, M., Janssen, X., Maes, T., Mucibello, L., Ochesanu, S., Rougny, R., Selvaggi, M., van Haevermaet, H., van Mechelen, P., van Remortel, N., Adler, V., Beauceron, S., Blyweert, S., d'Hondt, J., Deweirdt, S., Devroede, O., Heyninck, J., Kalogeropoulos, A., Maes, J., Maes, M., Mozer, M.U., Tavernier, S., van Doninck, W., van Mulders, P., Villella, I., Bouhali, O., Chabert, E.C., Charaf, O., Clerbaux, B., de Lentdecker, G., Dero, V., Elgammal, S., Gay, A.P.R., Hammad, G.H.
Format: Article
Language:English
Subjects:
Instrumentation and Detectors
Physics
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Summary:The CMS Level-1 trigger was used to select cosmic ray muons and LHC beam events during data-taking runs in 2008, and to estimate the level of detector noise. This paper describes the trigger components used, the algorithms that were executed, and the trigger synchronisation. Using data from extended cosmic ray runs, the muon, electron/photon, and jet triggers have been validated, and their performance evaluated. Efficiencies were found to be high, resolutions were found to be good, and rates as expected.
ISSN:1748-0221
1748-0221
DOI:10.1088/1748-0221/5/03/T03002