The ATLAS level-1 trigger: Status of the system and first results from cosmic-ray data

Autor: Gabriele Chiodini, Thomas Trefzger, Hans-Christian Schultz-Coulon, F.C. Pastore, Gianpaolo Carlino, Barbara Liberti, T. Sugimoto, M. Dogaru, S. Patricelli, A. R. Gillman, Stephen Hillier, A. Di Mattia, J. R.A. Booth, D. Boscherini, N. Kanaya, T. Niwa, N. Lupu, A. Salamon, M. Bendel, P. Gallno, D. De Pedis, Yorito Yamaguchi, Uli Schäfer, Claudio Luci, Kunihiro Nagano, Enrico Pasqualucci, Paolo Iengo, Vincenzo Izzo, V. Lendermann, S. Ask, E. E. Woehrling, B. Bauss, P. M. Watkins, P. Adragna, Alan Watson, C. J. Curtis, David Berge, Kiyotomo Kawagoe, F. Grancagnolo, O. Bahat Treidel, S. Constantin, T. Kobayashi, H. Pessoa Lima, D. DellaVolpe, Yoji Hasegawa, S. Bressler, M. Biglietti, Yasuyuki Okumura, Stefano Veneziano, M. Perantoni, D. P. F. Prieur, Nicolas Ellis, Johannes Haller, Hiroyuki Iwasaki, R. Santonico, L. Zanello, Erez Etzion, S. I. Buda, T. Kadosaka, R. DeAsmundis, A. Roich, G. Ciapetti, R. Perrino, Tohru Takeshita, G. Mahout, D. Caracinha, Anna Rita Migliaccio, Shlomit Tarem, R. Achenbach, A.O. Davis, A. Hidvegi, Samuel Silverstein, V.J.O. Perera, Paolo Camarri, Stefan Tapprogge, H. Oshita, Giulio Aielli, F. Spila, H. Takeda, Yuta Takahashi, I.P. Brawn, Masaya Ishino, H. Kiyamura, R. Lifshitz, E. Eisenhandler, Vincenzo Canale, Enrique Kajomovitz, Yorihito Sugaya, Francesco Conventi, Paul Hanke, Lorne Levinson, Emilio Petrolo, Aleandro Nisati, C. N. P. Gee, M.R. Coluccia, K. Mahboubi, M. Johansen, Stefania Spagnolo, Giora Mikenberg, H. Nomoto, S. Antonelli, Thilo Pauly, Hiroshi Sakamoto, T. Kohno, Michele Bianco, T. Kawamoto, Rainer Stamen, F. Föhlisch, Roberto Cardarelli, A. Polini, Daniel Lellouch, Alberto Aloisio, P. Klofver, J. P. Thomas, Murrough Landon, M. DellaPietra, A. DiCiaccio, T. Kuwabara, C. Omachi, W. Qian, Riccardo Vari, Margherita Primavera, Mitsuaki Nozaki, Osamu Sasaki, P.J.W. Faulkner, K. Meier, Attila Krasznahorkay, Chikara Fukunaga, Mariagrazia Alviggi, F. Marchese, C. Geweniger, R.J. Staley, Masahiro Ikeno, Dave Charlton, E. E. Kluge, Sten Hellman, A. Di Girolamo, R. Spiwoks, V. Andrei, Masaharu Nomachi, P. Giusti, Makoto Tomoto, P. Weber, A. Bruni, Christian Ohm, Y. Benhammou, Satoshi Tanaka, M. Pectu, Edoardo Gorini, Givi Sekhniaidze, K. Schmitt, Frederik Rühr, L. Bellagamba, C. Bohm, Takashi Kubota, S. Haas, G. Schuler, Hisaya Kurashige, Yoshiji Yasu, Atsuhiko Ochi, G. Bruni, Dave Sankey, S. Rieke, P. Farthouat, Bruce Barnett, S. Ben Ami, Stefano Rosati, J.M. de Seixas, E. Solfaroli, Thorsten Wengler, Giuseppe Iacobucci
Přispěvatelé: Aielli, G, Andrei, V, Achenbach, R, Bianco, Michele, Primavera, Margherita, Spagnolo, Stefania Antonia, Gorini, Edoardo, G., Aielli, V., Andrei, R., Achenbach, P., Adragna, Aloisio, Alberto, Alviggi, Mariagrazia, S., Antonelli, S., Ask, B., Barnett, B., Bau, Canale, Vincenzo, DELLA VOLPE, Domenico, Patricelli, Sergio
Rok vydání: 2007
Předmět:
Zdroj: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 581:476-481
ISSN: 0168-9002
Popis: The ATLAS detector at CERN's Large Hadron Collider (LHC) will be exposed to proton-proton collisions from beams crossing at 40 MHz. At the design luminosity of 10^34 cm^-2 s^-1 there are on average 23 collisions per bunch crossing. 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 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.
Contribution to the 11th Vienna Conference on Instrumentation (2007), 12 pages, 6 figures, accepted for publication in the proceedings in NIM A
Databáze: OpenAIRE
Externí odkaz: