The ATLAS level-1 trigger: Status of the system and experience from commissioning with cosmic ray muons

R. Achenbach; P. Adragna; G. Aielli; A. Aloisio; M. G. Alviggi; V. Andrei; S. Antonelli; S. Ask; B. Åsman; O. Bahat Treidel; B. M. Barnett; B. Bauss; L. Bellagamba; S. Ben Ami; M. Bendel; Y. Benhammou; D. Berge; M. Bianco; M. G. Biglietti; C. Bohm; J. R.A. Booth; D. Boscherini; I. P. Brawn; S. Bressler; A. Bruni; G. Bruni; S. Buda; P. Camarri; V. Canale; D. Caracinha; R. Cardarelli; G. Carlino; D. G. Charlton; G. Chiodini; G. Ciapetti; N. J. Collins; M. R. Coluccia; S. Constantin; F. Conventi; C. J. Curtis; A. O. Davis; D. De Pedis; J. M. De Seixas; R. DeAsmundis; M. DellaPietra; D. DellaVolpe; A. Di Girolamo; A. Di Mattia; A. DiCiaccio; M. Dogaru; S. Eckweiler; W. Ehrenfeld; E. Eisenhandler; N. Ellis; E. Etzion; P. Farthouat; P. J.W. Faulkner; J. Fleckner; F. Föhlisch; C. Fukunaga; P. Gällnö; C. N.P. Gee; C. Geweniger; A. R. Gillman; P. Giusti; E. Gorini; F. Grancagnolo; S. Haas; J. Haller; P. Hanke; Y. Hasegawa; S. J. Head; S. Hellman; A. Hidvégi; S. J. Hillier; G. Iacobucci; P. Iengo; M. Ikeno; M. Ishino; H. Iwasaki; V. Izzo; M. Johansen; T. Kadosaka; E. Kajomovitz; N. Kanaya; K. Kawagoe; T. Kawamoto; H. Kiyamura; P. Klofver; E. E. Kluge; T. Kobayashi; A. Krasznahorkay; T. Kubota; H. Kurashige; T. Kuwabara; M. Landon; D. Lellouch; V. Lendermann; L. Levinson; B. Liberti; R. Lifshitz; J. N. Lilley; C. Luci; N. Lupu; K. Mahboubi; G. Mahout; F. Marchese; K. Meier; A. Messina; A. Migliaccio; G. Mikenberg; T. Moa; K. Nagano; A. Neusiedl; A. Nisati; T. Niwa; M. Nomachi; H. Nomoto; M. Nozaki; A. Ochi; C. Ohm; Y. Okumura; B. Oltmann; C. Omachi; H. Oshita; E. Pasqualucci; F. Pastore; S. Patricelli; T. Pauly; M. Pectu; M. Perantoni; V. J.O. Perera; R. Perrino; H. Pessoa Lima; E. Petrolo; A. Polini; D. P.F. Prieur; M. Primavera; W. Qian; S. Rieke; A. Roich; S. Rosati; F. Rühr; H. Sakamoto; A. Salamon; D. P.C. Sankey; R. Santonico; O. Sasaki; U. Schäfer; K. Schmitt; G. Schuler; H. C. Schultz-Coulon; G. Sekhniaidze; S. Silverstein; E. Solfaroli; S. Spagnolo; F. Spila; R. Spiwoks; R. J. Staley; R. Stamen; M. C. Stockton; Y. Sugaya; T. Sugimoto; Y. Takahashi; H. Takeda; T. Takeshita; S. Tanaka; S. Tapprogge; S. Tarem; J. P. Thomas; M. Tomoto; T. Trefzger; R. Vari; S. Veneziano; P. M. Watkins; A. Watson; P. Weber; T. Wengler; E. E. Woehrling; Y. Yamaguchi; Y. Yasu; L. Zanello

doi:10.1109/NSSMIC.2007.4436573

The ATLAS level-1 trigger: Status of the system and experience from commissioning with cosmic ray muons

R. Achenbach, P. Adragna, G. Aielli, A. Aloisio, M. G. Alviggi, V. Andrei, S. Antonelli, S. Ask, B. Åsman, O. Bahat Treidel, B. M. Barnett, B. Bauss, L. Bellagamba, S. Ben Ami, M. Bendel, Y. Benhammou, D. Berge, M. Bianco, M. G. Biglietti, C. BohmJ. R.A. Booth, D. Boscherini, I. P. Brawn, S. Bressler, A. Bruni, G. Bruni, S. Buda, P. Camarri, V. Canale, D. Caracinha, R. Cardarelli, G. Carlino, D. G. Charlton, G. Chiodini, G. Ciapetti, N. J. Collins, M. R. Coluccia, S. Constantin, F. Conventi, C. J. Curtis, A. O. Davis, D. De Pedis, J. M. De Seixas, R. DeAsmundis, M. DellaPietra, D. DellaVolpe, A. Di Girolamo, A. Di Mattia, A. DiCiaccio, M. Dogaru, S. Eckweiler, W. Ehrenfeld, E. Eisenhandler, N. Ellis, E. Etzion, P. Farthouat, P. J.W. Faulkner, J. Fleckner, F. Föhlisch, C. Fukunaga, P. Gällnö, C. N.P. Gee, C. Geweniger, A. R. Gillman, P. Giusti, E. Gorini, F. Grancagnolo, S. Haas, J. Haller, P. Hanke, Y. Hasegawa, S. J. Head, S. Hellman, A. Hidvégi, S. J. Hillier, G. Iacobucci, P. Iengo, M. Ikeno, M. Ishino, H. Iwasaki, V. Izzo, M. Johansen, T. Kadosaka, E. Kajomovitz, N. Kanaya, K. Kawagoe, T. Kawamoto, H. Kiyamura, P. Klofver, E. E. Kluge, T. Kobayashi, A. Krasznahorkay, T. Kubota, H. Kurashige, T. Kuwabara, M. Landon, D. Lellouch, V. Lendermann, L. Levinson, B. Liberti, R. Lifshitz, J. N. Lilley, C. Luci, N. Lupu, K. Mahboubi, G. Mahout, F. Marchese, K. Meier, A. Messina, A. Migliaccio, G. Mikenberg, T. Moa, K. Nagano, A. Neusiedl, A. Nisati, T. Niwa, M. Nomachi, H. Nomoto, M. Nozaki, A. Ochi, C. Ohm, Y. Okumura, B. Oltmann, C. Omachi, H. Oshita, E. Pasqualucci, F. Pastore, S. Patricelli, T. Pauly, M. Pectu, M. Perantoni, V. J.O. Perera, R. Perrino, H. Pessoa Lima, E. Petrolo, A. Polini, D. P.F. Prieur, M. Primavera, W. Qian, S. Rieke, A. Roich, S. Rosati, F. Rühr, H. Sakamoto, A. Salamon, D. P.C. Sankey, R. Santonico, O. Sasaki, U. Schäfer, K. Schmitt, G. Schuler, H. C. Schultz-Coulon, G. Sekhniaidze, S. Silverstein, E. Solfaroli, S. Spagnolo, F. Spila, R. Spiwoks, R. J. Staley, R. Stamen, M. C. Stockton, Y. Sugaya, T. Sugimoto, Y. Takahashi, H. Takeda, T. Takeshita, S. Tanaka, S. Tapprogge, S. Tarem, J. P. Thomas, M. Tomoto, T. Trefzger, R. Vari, S. Veneziano, P. M. Watkins, A. Watson, P. Weber, T. Wengler, E. E. Woehrling, Y. Yamaguchi, Y. Yasu, L. Zanello

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

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 this rate to 100-200 Hz. A trigger decision is made by the Level-1 Central Trigger Processor (CTP) reducing the incoming rate to less than 100 kHz. The Level-1 decision is based on Calorimeter information and hits in dedicated Muon Trigger detectors. The final Level-1 trigger system is currently being installed in the experiment with completion expected in autumn 2007. Cosmic ray data are regularly recorded as an increasing fraction of the trigger system comes online. We present an overview of the Level-1 trigger system architecture and report on the installation and commissioning process at the ATLAS experimental site. Emphasis is put on the integration of the CTP with the Calorimeter and Muon Trigger systems. We show results from analyses of cosmic ray data recorded in situ and verify, where possible, that the Level-1 trigger meets the requirements and will be ready for data taking.

Original language	English
Title of host publication	2007 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS-MIC
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	2123-2129
Number of pages	7
ISBN (Print)	1424409233, 9781424409235
DOIs	https://doi.org/10.1109/NSSMIC.2007.4436573
Publication status	Published - 2007
Externally published	Yes
Event	2007 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS-MIC - Honolulu, HI, United States Duration: Oct 27 2007 → Nov 3 2007

Publication series

Name	IEEE Nuclear Science Symposium Conference Record
Volume	3
ISSN (Print)	1095-7863

Other

Other	2007 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS-MIC
Country/Territory	United States
City	Honolulu, HI
Period	10/27/07 → 11/3/07

All Science Journal Classification (ASJC) codes

Radiation
Nuclear and High Energy Physics
Radiology Nuclear Medicine and imaging

Access to Document

10.1109/NSSMIC.2007.4436573

Cite this

Achenbach, R., Adragna, P., Aielli, G., Aloisio, A., Alviggi, M. G., Andrei, V., Antonelli, S., Ask, S., Åsman, B., Treidel, O. B., Barnett, B. M., Bauss, B., Bellagamba, L., Ben Ami, S., Bendel, M., Benhammou, Y., Berge, D., Bianco, M., Biglietti, M. G., ... Zanello, L. (2007). The ATLAS level-1 trigger: Status of the system and experience from commissioning with cosmic ray muons. In 2007 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS-MIC (pp. 2123-2129). [4436573] (IEEE Nuclear Science Symposium Conference Record; Vol. 3). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/NSSMIC.2007.4436573

The ATLAS level-1 trigger : Status of the system and experience from commissioning with cosmic ray muons. / Achenbach, R.; Adragna, P.; Aielli, G. et al.

2007 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS-MIC. Institute of Electrical and Electronics Engineers Inc., 2007. p. 2123-2129 4436573 (IEEE Nuclear Science Symposium Conference Record; Vol. 3).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Achenbach, R, Adragna, P, Aielli, G, Aloisio, A, Alviggi, MG, Andrei, V, Antonelli, S, Ask, S, Åsman, B, Treidel, OB, Barnett, BM, Bauss, B, Bellagamba, L, Ben Ami, S, Bendel, M, Benhammou, Y, Berge, D, Bianco, M, Biglietti, MG, Bohm, C, Booth, JRA, Boscherini, D, Brawn, IP, Bressler, S, Bruni, A, Bruni, G, Buda, S, Camarri, P, Canale, V, Caracinha, D, Cardarelli, R, Carlino, G, Charlton, DG, Chiodini, G, Ciapetti, G, Collins, NJ, Coluccia, MR, Constantin, S, Conventi, F, Curtis, CJ, Davis, AO, De Pedis, D, De Seixas, JM, DeAsmundis, R, DellaPietra, M, DellaVolpe, D, Di Girolamo, A, Di Mattia, A, DiCiaccio, A, Dogaru, M, Eckweiler, S, Ehrenfeld, W, Eisenhandler, E, Ellis, N, Etzion, E, Farthouat, P, Faulkner, PJW, Fleckner, J, Föhlisch, F, Fukunaga, C, Gällnö, P, Gee, CNP, Geweniger, C, Gillman, AR, Giusti, P, Gorini, E, Grancagnolo, F, Haas, S, Haller, J, Hanke, P, Hasegawa, Y, Head, SJ, Hellman, S, Hidvégi, A, Hillier, SJ, Iacobucci, G, Iengo, P, Ikeno, M, Ishino, M, Iwasaki, H, Izzo, V, Johansen, M, Kadosaka, T, Kajomovitz, E, Kanaya, N, Kawagoe, K, Kawamoto, T, Kiyamura, H, Klofver, P, Kluge, EE, Kobayashi, T, Krasznahorkay, A, Kubota, T, Kurashige, H, Kuwabara, T, Landon, M, Lellouch, D, Lendermann, V, Levinson, L, Liberti, B, Lifshitz, R, Lilley, JN, Luci, C, Lupu, N, Mahboubi, K, Mahout, G, Marchese, F, Meier, K, Messina, A, Migliaccio, A, Mikenberg, G, Moa, T, Nagano, K, Neusiedl, A, Nisati, A, Niwa, T, Nomachi, M, Nomoto, H, Nozaki, M, Ochi, A, Ohm, C, Okumura, Y, Oltmann, B, Omachi, C, Oshita, H, Pasqualucci, E, Pastore, F, Patricelli, S, Pauly, T, Pectu, M, Perantoni, M, Perera, VJO, Perrino, R, Lima, HP, Petrolo, E, Polini, A, Prieur, DPF, Primavera, M, Qian, W, Rieke, S, Roich, A, Rosati, S, Rühr, F, Sakamoto, H, Salamon, A, Sankey, DPC, Santonico, R, Sasaki, O, Schäfer, U, Schmitt, K, Schuler, G, Schultz-Coulon, HC, Sekhniaidze, G, Silverstein, S, Solfaroli, E, Spagnolo, S, Spila, F, Spiwoks, R, Staley, RJ, Stamen, R, Stockton, MC, Sugaya, Y, Sugimoto, T, Takahashi, Y, Takeda, H, Takeshita, T, Tanaka, S, Tapprogge, S, Tarem, S, Thomas, JP, Tomoto, M, Trefzger, T, Vari, R, Veneziano, S, Watkins, PM, Watson, A, Weber, P, Wengler, T, Woehrling, EE, Yamaguchi, Y, Yasu, Y & Zanello, L 2007, The ATLAS level-1 trigger: Status of the system and experience from commissioning with cosmic ray muons. in 2007 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS-MIC., 4436573, IEEE Nuclear Science Symposium Conference Record, vol. 3, Institute of Electrical and Electronics Engineers Inc., pp. 2123-2129, 2007 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS-MIC, Honolulu, HI, United States, 10/27/07. https://doi.org/10.1109/NSSMIC.2007.4436573

Achenbach R, Adragna P, Aielli G, Aloisio A, Alviggi MG, Andrei V et al. The ATLAS level-1 trigger: Status of the system and experience from commissioning with cosmic ray muons. In 2007 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS-MIC. Institute of Electrical and Electronics Engineers Inc. 2007. p. 2123-2129. 4436573. (IEEE Nuclear Science Symposium Conference Record). doi: 10.1109/NSSMIC.2007.4436573

@inproceedings{11617abea2ec411ead337985a76fcee9,

title = "The ATLAS level-1 trigger: Status of the system and experience from commissioning with cosmic ray muons",

abstract = "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 this rate to 100-200 Hz. A trigger decision is made by the Level-1 Central Trigger Processor (CTP) reducing the incoming rate to less than 100 kHz. The Level-1 decision is based on Calorimeter information and hits in dedicated Muon Trigger detectors. The final Level-1 trigger system is currently being installed in the experiment with completion expected in autumn 2007. Cosmic ray data are regularly recorded as an increasing fraction of the trigger system comes online. We present an overview of the Level-1 trigger system architecture and report on the installation and commissioning process at the ATLAS experimental site. Emphasis is put on the integration of the CTP with the Calorimeter and Muon Trigger systems. We show results from analyses of cosmic ray data recorded in situ and verify, where possible, that the Level-1 trigger meets the requirements and will be ready for data taking.",

author = "R. Achenbach and P. Adragna and G. Aielli and A. Aloisio and Alviggi, {M. G.} and V. Andrei and S. Antonelli and S. Ask and B. {\AA}sman and Treidel, {O. Bahat} and Barnett, {B. M.} and B. Bauss and L. Bellagamba and {Ben Ami}, S. and M. Bendel and Y. Benhammou and D. Berge and M. Bianco and Biglietti, {M. G.} and C. Bohm and Booth, {J. R.A.} and D. Boscherini and Brawn, {I. P.} and S. Bressler and A. Bruni and G. Bruni and S. Buda and P. Camarri and V. Canale and D. Caracinha and R. Cardarelli and G. Carlino and Charlton, {D. G.} and G. Chiodini and G. Ciapetti and Collins, {N. J.} and Coluccia, {M. R.} and S. Constantin and F. Conventi and Curtis, {C. J.} and Davis, {A. O.} and {De Pedis}, D. and {De Seixas}, {J. M.} and R. DeAsmundis and M. DellaPietra and D. DellaVolpe and {Di Girolamo}, A. and {Di Mattia}, A. and A. DiCiaccio and M. Dogaru and S. Eckweiler and W. Ehrenfeld and E. Eisenhandler and N. Ellis and E. Etzion and P. Farthouat and Faulkner, {P. J.W.} and J. Fleckner and F. F{\"o}hlisch and C. Fukunaga and P. G{\"a}lln{\"o} and Gee, {C. N.P.} and C. Geweniger and Gillman, {A. R.} and P. Giusti and E. Gorini and F. Grancagnolo and S. Haas and J. Haller and P. Hanke and Y. Hasegawa and Head, {S. J.} and S. Hellman and A. Hidv{\'e}gi and Hillier, {S. J.} and G. Iacobucci and P. Iengo and M. Ikeno and M. Ishino and H. Iwasaki and V. Izzo and M. Johansen and T. Kadosaka and E. Kajomovitz and N. Kanaya and K. Kawagoe and T. Kawamoto and H. Kiyamura and P. Klofver and Kluge, {E. E.} and T. Kobayashi and A. Krasznahorkay and T. Kubota and H. Kurashige and T. Kuwabara and M. Landon and D. Lellouch and V. Lendermann and L. Levinson and B. Liberti and R. Lifshitz and Lilley, {J. N.} and C. Luci and N. Lupu and K. Mahboubi and G. Mahout and F. Marchese and K. Meier and A. Messina and A. Migliaccio and G. Mikenberg and T. Moa and K. Nagano and A. Neusiedl and A. Nisati and T. Niwa and M. Nomachi and H. Nomoto and M. Nozaki and A. Ochi and C. Ohm and Y. Okumura and B. Oltmann and C. Omachi and H. Oshita and E. Pasqualucci and F. Pastore and S. Patricelli and T. Pauly and M. Pectu and M. Perantoni and Perera, {V. J.O.} and R. Perrino and Lima, {H. Pessoa} and E. Petrolo and A. Polini and Prieur, {D. P.F.} and M. Primavera and W. Qian and S. Rieke and A. Roich and S. Rosati and F. R{\"u}hr and H. Sakamoto and A. Salamon and Sankey, {D. P.C.} and R. Santonico and O. Sasaki and U. Sch{\"a}fer and K. Schmitt and G. Schuler and Schultz-Coulon, {H. C.} and G. Sekhniaidze and S. Silverstein and E. Solfaroli and S. Spagnolo and F. Spila and R. Spiwoks and Staley, {R. J.} and R. Stamen and Stockton, {M. C.} and Y. Sugaya and T. Sugimoto and Y. Takahashi and H. Takeda and T. Takeshita and S. Tanaka and S. Tapprogge and S. Tarem and Thomas, {J. P.} and M. Tomoto and T. Trefzger and R. Vari and S. Veneziano and Watkins, {P. M.} and A. Watson and P. Weber and T. Wengler and Woehrling, {E. E.} and Y. Yamaguchi and Y. Yasu and L. Zanello",

year = "2007",

doi = "10.1109/NSSMIC.2007.4436573",

language = "English",

isbn = "1424409233",

series = "IEEE Nuclear Science Symposium Conference Record",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

pages = "2123--2129",

booktitle = "2007 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS-MIC",

address = "United States",

note = "2007 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS-MIC ; Conference date: 27-10-2007 Through 03-11-2007",

}

TY - GEN

T1 - The ATLAS level-1 trigger

T2 - 2007 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS-MIC

AU - Achenbach, R.

AU - Adragna, P.

AU - Aielli, G.

AU - Aloisio, A.

AU - Alviggi, M. G.

AU - Andrei, V.

AU - Antonelli, S.

AU - Ask, S.

AU - Åsman, B.

AU - Treidel, O. Bahat

AU - Barnett, B. M.

AU - Bauss, B.

AU - Bellagamba, L.

AU - Ben Ami, S.

AU - Bendel, M.

AU - Benhammou, Y.

AU - Berge, D.

AU - Bianco, M.

AU - Biglietti, M. G.

AU - Bohm, C.

AU - Booth, J. R.A.

AU - Boscherini, D.

AU - Brawn, I. P.

AU - Bressler, S.

AU - Bruni, A.

AU - Bruni, G.

AU - Buda, S.

AU - Camarri, P.

AU - Canale, V.

AU - Caracinha, D.

AU - Cardarelli, R.

AU - Carlino, G.

AU - Charlton, D. G.

AU - Chiodini, G.

AU - Ciapetti, G.

AU - Collins, N. J.

AU - Coluccia, M. R.

AU - Constantin, S.

AU - Conventi, F.

AU - Curtis, C. J.

AU - Davis, A. O.

AU - De Pedis, D.

AU - De Seixas, J. M.

AU - DeAsmundis, R.

AU - DellaPietra, M.

AU - DellaVolpe, D.

AU - Di Girolamo, A.

AU - Di Mattia, A.

AU - DiCiaccio, A.

AU - Dogaru, M.

AU - Eckweiler, S.

AU - Ehrenfeld, W.

AU - Eisenhandler, E.

AU - Ellis, N.

AU - Etzion, E.

AU - Farthouat, P.

AU - Faulkner, P. J.W.

AU - Fleckner, J.

AU - Föhlisch, F.

AU - Fukunaga, C.

AU - Gällnö, P.

AU - Gee, C. N.P.

AU - Geweniger, C.

AU - Gillman, A. R.

AU - Giusti, P.

AU - Gorini, E.

AU - Grancagnolo, F.

AU - Haas, S.

AU - Haller, J.

AU - Hanke, P.

AU - Hasegawa, Y.

AU - Head, S. J.

AU - Hellman, S.

AU - Hidvégi, A.

AU - Hillier, S. J.

AU - Iacobucci, G.

AU - Iengo, P.

AU - Ikeno, M.

AU - Ishino, M.

AU - Iwasaki, H.

AU - Izzo, V.

AU - Johansen, M.

AU - Kadosaka, T.

AU - Kajomovitz, E.

AU - Kanaya, N.

AU - Kawagoe, K.

AU - Kawamoto, T.

AU - Kiyamura, H.

AU - Klofver, P.

AU - Kluge, E. E.

AU - Kobayashi, T.

AU - Krasznahorkay, A.

AU - Kubota, T.

AU - Kurashige, H.

AU - Kuwabara, T.

AU - Landon, M.

AU - Lellouch, D.

AU - Lendermann, V.

AU - Levinson, L.

AU - Liberti, B.

AU - Lifshitz, R.

AU - Lilley, J. N.

AU - Luci, C.

AU - Lupu, N.

AU - Mahboubi, K.

AU - Mahout, G.

AU - Marchese, F.

AU - Meier, K.

AU - Messina, A.

AU - Migliaccio, A.

AU - Mikenberg, G.

AU - Moa, T.

AU - Nagano, K.

AU - Neusiedl, A.

AU - Nisati, A.

AU - Niwa, T.

AU - Nomachi, M.

AU - Nomoto, H.

AU - Nozaki, M.

AU - Ochi, A.

AU - Ohm, C.

AU - Okumura, Y.

AU - Oltmann, B.

AU - Omachi, C.

AU - Oshita, H.

AU - Pasqualucci, E.

AU - Pastore, F.

AU - Patricelli, S.

AU - Pauly, T.

AU - Pectu, M.

AU - Perantoni, M.

AU - Perera, V. J.O.

AU - Perrino, R.

AU - Lima, H. Pessoa

AU - Petrolo, E.

AU - Polini, A.

AU - Prieur, D. P.F.

AU - Primavera, M.

AU - Qian, W.

AU - Rieke, S.

AU - Roich, A.

AU - Rosati, S.

AU - Rühr, F.

AU - Sakamoto, H.

AU - Salamon, A.

AU - Sankey, D. P.C.

AU - Santonico, R.

AU - Sasaki, O.

AU - Schäfer, U.

AU - Schmitt, K.

AU - Schuler, G.

AU - Schultz-Coulon, H. C.

AU - Sekhniaidze, G.

AU - Silverstein, S.

AU - Solfaroli, E.

AU - Spagnolo, S.

AU - Spila, F.

AU - Spiwoks, R.

AU - Staley, R. J.

AU - Stamen, R.

AU - Stockton, M. C.

AU - Sugaya, Y.

AU - Sugimoto, T.

AU - Takahashi, Y.

AU - Takeda, H.

AU - Takeshita, T.

AU - Tanaka, S.

AU - Tapprogge, S.

AU - Tarem, S.

AU - Thomas, J. P.

AU - Tomoto, M.

AU - Trefzger, T.

AU - Vari, R.

AU - Veneziano, S.

AU - Watkins, P. M.

AU - Watson, A.

AU - Weber, P.

AU - Wengler, T.

AU - Woehrling, E. E.

AU - Yamaguchi, Y.

AU - Yasu, Y.

AU - Zanello, L.

PY - 2007

Y1 - 2007

N2 - 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 this rate to 100-200 Hz. A trigger decision is made by the Level-1 Central Trigger Processor (CTP) reducing the incoming rate to less than 100 kHz. The Level-1 decision is based on Calorimeter information and hits in dedicated Muon Trigger detectors. The final Level-1 trigger system is currently being installed in the experiment with completion expected in autumn 2007. Cosmic ray data are regularly recorded as an increasing fraction of the trigger system comes online. We present an overview of the Level-1 trigger system architecture and report on the installation and commissioning process at the ATLAS experimental site. Emphasis is put on the integration of the CTP with the Calorimeter and Muon Trigger systems. We show results from analyses of cosmic ray data recorded in situ and verify, where possible, that the Level-1 trigger meets the requirements and will be ready for data taking.

AB - 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 this rate to 100-200 Hz. A trigger decision is made by the Level-1 Central Trigger Processor (CTP) reducing the incoming rate to less than 100 kHz. The Level-1 decision is based on Calorimeter information and hits in dedicated Muon Trigger detectors. The final Level-1 trigger system is currently being installed in the experiment with completion expected in autumn 2007. Cosmic ray data are regularly recorded as an increasing fraction of the trigger system comes online. We present an overview of the Level-1 trigger system architecture and report on the installation and commissioning process at the ATLAS experimental site. Emphasis is put on the integration of the CTP with the Calorimeter and Muon Trigger systems. We show results from analyses of cosmic ray data recorded in situ and verify, where possible, that the Level-1 trigger meets the requirements and will be ready for data taking.

UR - http://www.scopus.com/inward/record.url?scp=48349110566&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=48349110566&partnerID=8YFLogxK

U2 - 10.1109/NSSMIC.2007.4436573

DO - 10.1109/NSSMIC.2007.4436573

M3 - Conference contribution

AN - SCOPUS:48349110566

SN - 1424409233

SN - 9781424409235

T3 - IEEE Nuclear Science Symposium Conference Record

SP - 2123

EP - 2129

BT - 2007 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS-MIC

PB - Institute of Electrical and Electronics Engineers Inc.

Y2 - 27 October 2007 through 3 November 2007

ER -

The ATLAS level-1 trigger: Status of the system and experience from commissioning with cosmic ray muons

Abstract

Publication series

Other

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this