Status of the ATLAS Level-1 Central Trigger and Muon Barrel Trigger and First Results from Cosmic-Ray Data

The ATLAS detector at CERN's Large Hadron Collider (LHC) will be exposed to proton-proton collisions from beams crossing at 40~MHz. A three-level trigger system will select potentially interesting events in order to reduce the read-out rate to about 200 Hz. The first trigger level is implemente...

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Detalles Bibliográficos
Autores principales: Aielli, G, Aloisio, A, Alviggi, M G, Antonelli, S, Ask, S, Bellagamba, L, Ben, S, Benhammou, Ya, Berge, D, Bianco, M, Biglietti, M, Boscherini, D, Bressler, S, Bruni, A, Bruni, G, Buda, S, Camarri, P, Canale, V, Caracinha, D, Cardarelli, R, Carlino, G, Chiodini, G, Ciapetti, G, Coluccia, M R, Constantin, S, Conventi, F, De Asmundis, R, Della Pietra, M, Della Volpe, D, Dogaru, M, De, D, Di Ciaccio, A, Di, A, Ellis, Nick, Etzion, E, Farthouat, P, Fukunaga, C, Gällnö, P, Gorini, E, Grancagnolo, F, Giusti, P, Haas, S, Haller, J, Hasegawa, Y, Iacobucci, G, Ikeno, M, Iengo, P, Ishino, M, Iwasaki, H, Izzo, V, Kadosaka, T, Kajomovitz, E, Kanaya, N, Kawagoe, K, Kawamoto, T, Kiyamura, H, Klofver, P, Kobayashi, T, Kohno, T, Krasznahorkay, A, Kubota, T, Kurashige, H, Kuwabara, T, Lellouch, D, Levinson, L, Liberti, B, Lifshitz, R, Luci, C, Lupu, N, Marchese, F, Mikenberg, G, Migliaccio, A, Nagano, K, Nisati, A, Niwa, T, Nomachi, M, Nomoto, H, Nozaki, M, Ochi, A, Ohm, C, Okumura, Y, Omachi, C, Oshita, H, Patricelli, S, Pauly, T, Perantoni, M, Pessoa, H, Petrolo, E, Pasqualucci, E, Pastore, F, Pectu, M, Perrino, R, Polini, A, Primavera, M, Roich, A, Rosati, S, Salamon, A, Sakamoto, H, Santonico, R, Sasaki, O, Schuler, G, De Seixas, J M, Sekhniaidze, G, Solfaroli, E, Spagnolo, S, Spila, F, Spiwoks, R, Sugaya, Y, Sugimoto, T, Takahashi, Y, Takeda, H, Takeshita, T, Tanaka, S, Tarem, S, Tomoto, M, Bahat, O, Vari, R, Veneziano, S, Wengler, T, Yamaguchi, Y, Yasu, Y
Lenguaje:eng
Publicado: 2007
Materias:
Detectors and Experimental Techniques
Acceso en línea:http://cds.cern.ch/record/1035085
Descripción
Sumario:The ATLAS detector at CERN's Large Hadron Collider (LHC) will be exposed to proton-proton collisions from beams crossing at 40~MHz. A three-level trigger system will select potentially interesting events in order to reduce the read-out rate to about 200 Hz. The first trigger level is implemented in custom-built electronics and makes an initial fast selection based on detector data of coarse granularity. It has to reduce the rate by a factor of $10^4$ to less than 100~kHz. The other two consecutive trigger levels are in software and run on PC farms. We present an overview of the first-level central trigger and the muon barrel trigger system and report on the current installation status. Moreover, we show analysis results of cosmic-ray data recorded in situ at the ATLAS experimental site with final or close-to-final hardware.

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