Precise Timing Adjustment for the ATLAS Level1 Endcap Muon Trigger System

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The ATLAS level1 endcap muon trigger system consists of about 4000 Thin Gap Chambers (TGC) with 320,000 input electronics channels in order to find level1 trigger candidates for muons in both endcap regions. We had already adjusted channel-to-channel timing difference in overall TGC system with 1.2n...

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Detalles Bibliográficos
Autores principales: Suzuki, Y, Sasaki, O, Iwasaki, H, Ikeno, M, Ishino, M, Tanaka, S, Fukunaga, C, Tomoto, M, Sugimoto, T, Okumura, Y, Takahashi, Y, Hasegawa, S, Itoh, Y, Kishiki, S, Takeshita, T, Hasegawa, Y, Sugaya, Y, Kawamoto, T, Sakamoto, H, Oda, S, Kubota, T, Kessoku, K, Echizenya, Y, Kurashige, H, Ishikawa, A, Matsushita, T, Ochi, A, Omachi, C, Hayakawa, T, Nishiyama, T, Tarem, S, Kajomovitz, E, Ben Ami, S, Hershenhorn, A, Bressler, S, Benhammou, Ya, Etzion, E, Hod, N, Silver, Y, Lellouch, D, Levinson, L, Mikenberg, G
Lenguaje:eng
Publicado: CERN 2009
Materias:
Detectors and Experimental Techniques
Acceso en línea:https://dx.doi.org/10.5170/CERN-2009-006.200
http://cds.cern.ch/record/1217944
Descripción
Sumario:The ATLAS level1 endcap muon trigger system consists of about 4000 Thin Gap Chambers (TGC) with 320,000 input electronics channels in order to find level1 trigger candidates for muons in both endcap regions. We had already adjusted channel-to-channel timing difference in overall TGC system with 1.2ns level, and found its consistency with the observation of beam halo events in the first proton circulation of LHC in September 2008. After that we have found some more correction factors to be incorporated with and eventually achieved timing adjustment in 0.9ns precision. In this presentation we also discuss an effective strategy for a parameter that can be adjusted using colliding beams.

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