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1. Current achievements of the DELPHI ring imaging Cherenkov detector

Author

C. Aubret, G. Polok, E. C. Katsoufis, D. Poutot, J. M. Brunet, E. Christophel, Jerzy Michalowski, G. E. Theodosiou, L. Traspedini, H. Rahmani, G. W. Van Apeldoorn, Mario Sannino, D. Fassouliotis, L. K. Resvanis, J. P. Engel, S. Maltezos, Christine Kourkoumelis, E. Dahl-Jensen, M. Chevry, G. Damgaard, G. Mourgue, Th. D. Papadopoulou, M. Davenport, G. Tripodi, E. Albrecht, S Jaaskelainen, O. Ullaland, A. Lopez Agüera, P. Juillot, V. Gracco, S. Ilie, Paul Baillon, Pavlos Ioannou, Kathy Huet, J. Dolbeau, P. Cavalli, B. Dalmagne, F. Delbecque, J. Thadome, Tord Ekelof, A. Fontenille, Daniel Bloch, Borge Svane Nielsen, E. Zevgolatakos, D. Z. Toet, P. Stassi, Wolfgang Adam, S. Haider, D. Gillespie, G. Sajot, Peter Kluit, M. Battaglia, Jorge-Armando Benitez Garcia, E. Schyns, G. Lecoeur, Demetrios Loukas, S. Katsanevas, M. Reale, P. Carrie, Guillaume Cerutti, Manolis Dris, T. A. Filippas, Evangelos Gazis, C. Joram, Olga Botner, F. Hahn, F. Montano, E. Karvelas, M. Dracos, N. Dimitriou, B. Koene, M. J. Tobar, D. Allen, N. J. Kjaer, S. Squarcia, D. Fraissard, Claire Bourdarios, G. Tristram, Andromachi Tsirou, L.-E. Lindqvist, Andre Augustinus, A. Buys, Allan Hallgren, H. Furstenau, G. Lenzen, R. Strub, E. Fokitis, W. Hao, R. Nicolaidou, M. L. Andrieux, J. Medbo, F. Fontanelli, A. Markou, A. Petrolini, L. Guglielmi, LEP (IHEF, IoP, FNWI), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics, Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, Cherenkov detector, Detector, Solid angle, Signal, Ring-imaging Cherenkov detector, law.invention, Nuclear physics, law, Carbon–fluorine bond, Calibration, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Angular resolution, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Instrumentation
Abstract

The DELPHI experiment has already collected 2.5 million Z 0 decays with the ring imaging Cherenkov detector (RICH) operational. This detector, covering most of the solid angle, is designed to perform π K separation from 0.8 to 20 GeV/ c and K/p separation from 0.8 to 35 GeV/ c . After a brief detector description we discuss the actual operating conditions, the data monitoring and the signal treatment. The collected data from Z 0 decays and the detector response to signals from the calibration system are used to evaluate the performance of the RICH system.

Published
1996

2. Performance of the ring imaging Cherenkov detector of DELPHI

Author

G. W. Van Apeldoorn, D. Poutot, Y. Arnoud, E. Dahl-Jensen, A. Buys, D. Fraissard, J. P. Engel, L. Guglielmi, G. Polok, Allan Hallgren, L. Traspedini, L. K. Resvanis, Evangelos Gazis, P. Juillot, Th. D. Papadopoulou, B. Koene, G. Damgaard, M. Dracos, M. Chevry, A. Lopez Agüera, J. M. Brunet, V. Gracco, Pavlos Ioannou, G. Lecoeur, S. Ilie, F. Delbecque, Mario Sannino, F. Hahn, W. Hao, J. Thadome, D. Allen, G. Mourgue, Guillaume Cerutti, Olga Botner, H. Rahmani, M. Davenport, Kathy Huet, D. Z. Toet, G. Tripodi, D. Fassouliotis, Claire Bourdarios, G. E. Theodosiou, Borge Svane Nielsen, J. Dolbeau, N. J. Kjaer, O. Ullaland, Jorge-Armando Benitez Garcia, Manolis Dris, E. Albrecht, G. Tristram, Peter Kluit, Daniel Bloch, E. C. Katsoufis, Wolfgang Adam, Tord Ekelof, Andromachi Tsirou, Andre Augustinus, Paul Baillon, S. Katsanevas, T. A. Filippas, S. Haider, Jerzy Michalowski, R. Nicolaidou, P. Stassi, F. Fontanelli, E. Christophel, S. Maltezos, A. Fontenille, M. J. Tobar, P. Cavalli, B. Dalmagne, G. Lenzen, R. Strub, F. Montano, E. Karvelas, N. Dimitriou, L.-E. Lindqvist, S. Squarcia, D. Gillespie, E. Schyns, M. Reale, E. Fokitis, Demetrios Loukas, S Jaaskelainen, C. Kourkoumelis, H. Furstenau, E. Zevgolatakos, M. Battaglia, P. Carrie, M. L. Andrieux, J. Medbo, A. Markou, A. Petrolini, C. Aubret, G. Sajot, C. Joram, Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), and Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics, Nuclear and High Energy Physics, Large Hadron Collider, Physics::Instrumentation and Detectors, Cherenkov detector, Detector, Ring-imaging Cherenkov detector, Particle detector, law.invention, Nuclear physics, law, Large Electron–Positron Collider, Hermetic detector, High Energy Physics::Experiment, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Nuclear Experiment, Instrumentation, Cherenkov radiation
Abstract

The general purpose particle detector DELPHI at the Large Electron Positron collider at CERN was built to give the complete information of each event. DELPHI uses ring imaging Cherenkov counters to provide hadron identification in most of the momentum range below 45 GeV/ c and over almost the full solid angle. Charged particles traversing gaseous and liquid fluorocarbon radiators create photons used for Cherenkov angle reconstruction. Some of the design features of the detector will be presented, with emphasis on the experience which was gained in the operation of these large systems. The hadron identification power of the ring imaging Cherenkov detector closely meets the main design values. Data processing and performance of the detector will be discussed using dimuon events collected during 1994. Pion rejection factors for kaon tagging will be shown.

Published
1995

3. Performance of the HPC calorimeter in DELPHI

Author

G. Valenti, G. Meola, T. Malgren, R. Contri, S. O. Holmgren, Marek Szczekowski, J. W. Lamsa, C. Kreuter, W. Bell, Ariella Cattai, Paolo Morettini, W. Kohler, P. Szymanski, S. Colilli, A. Firestone, U. Rossi, M. Boldini, K. Hultqvist, M. Wielers, L. Traspedini, Marta Calvi, R. Sosnowski, R. Mazza, A. Passeri, Francesca Romana Cavallo, Mitchell Wayne, T. Tabarelli de Fatis, B. Konig, W. Bonivento, D. Edsall, H. B. Crawley, H. Furstenau, R. McKay, S. Squarcia, C. Bastie, M. Gorbics, Richard Jacobsson, A. De Min, J. Martin, A. Algeri, M. Lewandowski, W. T. Meyer, L. Tortora, A. Morelli, Stefan Schael, G. Crosetti, Roberto Leoni, Tiziano Camporesi, E. K. Johansson, V. Giordano, O. Podobrin, A. Chan, F. Chignoli, R. Bohmer, J. Krolikowski, Cristian Stanescu, Francesco Navarria, L. Maselli, Stefano Ragazzi, L. Gorn, G. Piana, Andrea Perrotta, E. I. Rosenberg, A. Seitz, A. Tonazzo, H. Burmeister, E. Spiriti, W.D. Thomas, W. De Boer, P. Privitera, Mario Sannino, T. Moa, M. Karlsson, L. Cerrito, K. Doraba, E. Graziani, S. Sorrentino, T. Marszal, D. Gillespie, Kerem Cankocak, L. Thollander, M. Szeptycka, M. Feindt, and P. Negri

Subjects
Physics, Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, Emphasis (telecommunications), Detector, Computer Science::Software Engineering, Particle accelerator, Calorimetry, 01 natural sciences, Particle detector, law.invention, Calorimeter, Nuclear physics, Nuclear Energy and Engineering, law, 0103 physical sciences, Calibration, High Energy Physics::Experiment, Electrical and Electronic Engineering, Detectors and Experimental Techniques, 010306 general physics, Projection (set theory)
Abstract

The performance of the High-density Projection Chamber (HPC), the barrel electromagnetic calorimeter of the DELPHI experiment, is described. The detector adopts the time projection technique in order to obtain exceptionally fine spatial granularity in the three coordinates (/spl sim/2/spl times/20 mrad/sup 2/ in /spl theta//spl times//spl phi/ with nine samplings along the shower axes), using a limited number of readout channels (18432). Among the various topics concerning the HPC construction and operation, major emphasis is given to the aspects related to the calibration in energy of the calorimeter, based mainly on the analysis of the detector response to /sup 83m/Kr decays, and to the treatment of ageing in the readout proportional counters. >

Published
1995

4. Operational experience with the 4$\pi$ ring imaging Cherenkov detector of DELPHI

Author

Manolis Dris, Tord Ekelof, S. Ilie, F. Fulda, Paul Baillon, R. Nicolaidou, J. P. Engel, E. Christophel, E. C. Katsoufis, E. Zevgolatakos, P. Cavalli, B. Dalmagne, G. Damgaard, G. W. Van Apeldoorn, L. Guglielmi, Pierre Juillot, B. Koene, C. Aubret, V. Gracco, M. Battaglia, Pavlos Ioannou, G Gerutti, Y. Arnoud, P. Stassi, J. Thadome, Wolfgang Adam, Evangelos Gazis, J. Dolbeau, W. Hao, R. Strub, N. J. Kjaer, Christine Kourkoumelis, E. Dahl-Jensen, M. Chevry, L. Traspedini, L. K. Resvanis, S. Haider, E. Schyns, M. L. Andrieux, G. Lecoeur, D. Poutot, F. Hahn, G. Tristram, G. Mourgue, G. Tripodi, Kathy Huet, Th. D. Papadopoulou, A. Lopez Agüera, Borge Svane Nielsen, A. Buys, J. M. Brunet, E. Fokitis, Peter Kluit, P. F. Honore, G. Polok, Marcos Dracos, Mario Sannino, J. Medbo, J.M. Ostler, E. Albrecht, S. Katsanevas, Daniel Bloch, Allan Hallgren, T. A. Filippas, Jerzy Michalowski, Demetrios Loukas, G. Sajot, D. Fraissard, S. Maltezos, P. Carecchio, A. Maltezos, Olga Botner, P. Carrie, M. Davenport, A. Budziak, S. Squarcia, L. O. Eek, H. Rahmani, D. Fassouliotis, F. Fontanelli, O. Ullaland, E. Saragas, Claire Bourdarios, D. Z. Toet, H. Furstenau, M. Zavrtanik, Jorge-Armando Benitez Garcia, A.S. de la Vega, L.-E. Lindqvist, F. Montano, E. Karvelas, N. Dimitriou, A. Fontenille, D. Allen, G. Lenzen, Andromachi Tsirou, Andre Augustinus, D. Gillespie, M. Reale, A. Markou, A. Petrolini, T. Henkes, M. Berggren, G. E. Theodosiou, Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Physique Corpusculaire et Cosmologie - Collège de France (PCC), Collège de France (CdF (institution))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Collège de France (CdF)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Delphi (IHEF, IoP, FNWI)

Subjects
Physics, Nuclear and High Energy Physics, Photon, Physics::Instrumentation and Detectors, Cherenkov detector, Detector, Solid angle, Charged particle, Ring-imaging Cherenkov detector, law.invention, Nuclear physics, law, Hermetic detector, High Energy Physics::Experiment, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Instrumentation, Cherenkov radiation
Abstract

The ring imaging Cherenkov detector in the DELPHI Experiment at LEP allows hadron identification over a momentum range up to about 40 Gev/c over a near to 4π solid angle. Photons emitted by charged particles traversing gas and liquid radiators which are filled with UV-transparent perfluorocarbons, are used for Cherenkov angle reconstruction. Stable operation ensures that the detector is an efficient and powerful instrument. Monitoring of the detector parameters is of utmost importance to achieve good data quality and adequate data processing. The hadron identifying power of the ring imaging Cherenkov detector closely meets the main design values. Computerized control and monitoring features of the different subsystems will be presented. The interplay between detector parameters and the particle separating capacity of the detector will be discussed.

Published
1994

5. THE RING IMAGING CHERENKOV DETECTOR OF DELPHI

Author

W. Adam, E.G. Anassontzis, E. Albrecht, I. Ambec, G. van Apeldoorn, Y. Arnoud, C. Aubret, A. Augustinus, P. Baillon, C. Barnoux, M. Battaglia, M. Berggren, D. Bloch, O. Botner, C. Bourdarios, N. Brümmer, J.M. Brunet, A.P. Budziak, A. Buys, L.P. Caloba, P. Carecchio, P. Carrié, P. Cavalli, R. Cereseto, G. Cerutti, M. Chevry, E. Christophel, E. Dahl-Jensen, B. D'Almagne, Ph. Dam, P. van Dam, G. Damgaard, M. Davenport, J. Dolbeau, M. Dracos, M. Dris, N. de Koning, A.S. de la Vega, N. Dimitriou, L-O. Eek, T. Ekelöf, J. Erikson, J.P. Engel, G. Evers, D. Fassouliotis, T.A. Filippas, A. Florek, B. Florek, E. Fokitis, F. Fontanelli, A. Fontenille, D. Fraissard, K. Galuszka, J. Garcia, E. Gaumann, E. Gazis, B. Goret, V. Gracco, L. Guglielmi, F. Hahn, S. Haider, A. Hallgren, W. Hao, T. Henkes, P.F. Honoré, K. Huet, P. Ioannou, H. Johansson, P. Juillot, G. Kalkanis, E. Karvelas, S. Katsanevas, E. Katsoufis, P. Kindblom, N. Kjaer, W. Klempt, P.M. Kluit, B. Koene, P. Kokkinias, C. Kourkoumelis, C. Lambropoulos, D. Langerveld, G. Lecoeur, G. Lenzen, L-E. Lindqvist, A. López Agúera, D. Loukas, A. Maltezos, S. Maltezos, A. Markou, L. Mattsson, J. Medbo, J. Michalowski, F. Montano, G. Mourgue, B.S. Nielsen, R. Nicolaidou, J.M. Noppe, J.M. Ostler, K. Pakonski, Th.D. Papadopoulou, D. Poutot, A. Petrolini, G. Polok, L.K. Resvanis, E. Rosso, G. Sajot, M. Schaeffer, M. Sannino, E. Saragas, E. Schyns, S. Squarcia, G. Stavropoulos, M. Stodulski, Z. Stopa, R. Strub, J. Thadome, G.E. Theodosiou, D.Z. Toet, L. Traspedini, G. Tristram, A. Tsirou, M. Turala, S. Tzamarias, O. Ullaland, P. Vergezac, G. Voulgaris, A. Wärm, J. Werner, M. Zavrtanik, and E. Zevgolatakos

Subjects
Physics, Nuclear and High Energy Physics, Large Hadron Collider, Photon, Physics::Instrumentation and Detectors, business.industry, Cherenkov detector, Detector, Solid angle, Particle identification, Ring-imaging Cherenkov detector, law.invention, Nuclear physics, Optics, law, High Energy Physics::Experiment, business, Instrumentation, Storage ring
Abstract

The ring imaging Cherenkov detector system in the DELPHI experiment at the Large Electron-Positron storage ring at CERN, is designed to do particle identification over most of the solid angle in the momentum range from ∼2 GeV c to ∼40 sol GeV c . Two radiator media are used to cover the momentum range; (i) a 1 cm layer of liquid C6F14, and (ii) a volume filled with gaseous C5F12 or C4F10. Photosensitive time projection chambers record the conversion points of the ultraviolet photons produced in both radiator systems. The total active area is ∼30 m2 in the barrel region and ∼8 m2 in the two endcaps. The design of the detector systems is described in this paper. We will also report performance figures and compare them to simulation studies.

Published
1994

6. RECENT RESULTS OF THE FORWARD RING IMAGING CHERENKOV DETECTOR OF THE DELPHI EXPERIMENT AT LEP

Author

Jorge-Armando Benitez Garcia, G. Damgaard, V. Gracco, A. Fontenille, G. Tripodi, A.S. de la Vega, L.-E. Lindqvist, Guillaume Cerutti, A. Petrolini, P. Cavalli, T. Henkes, A. Lopez Aguera, G. Sajot, J. Thadome, Mario Sannino, F. Montano, P. Carecchio, A. Maltezos, A. Budziak, E. Schyns, E. Karvelas, Wolfgang Adam, B. Koene, N. Dimitriou, J.M. Ostler, E. Albrecht, Tord Ekelof, W. Hao, Allan Hallgren, L. Traspedini, Andre Augustinus, Demetrios Loukas, Olga Botner, G. Polok, G. Lenzen, G. E. Theodosiou, O. Ullaland, A. Markou, E. Dahl-Jensen, L. O. Eek, F. Fontanelli, S. Squarcia, A. Florek, M. Zavrtanik, Borge Svane Nielsen, B. Florek, Jerzy Michalowski, and J. Medbo

Subjects
Physics, Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, Computer Science::Software Engineering, Particle accelerator, Particle identification, Particle detector, Ring-imaging Cherenkov detector, law.invention, Nuclear physics, Nuclear Energy and Engineering, law, Measuring instrument, High Energy Physics::Experiment, Electrical and Electronic Engineering, computer, Delphi, computer.programming_language
Abstract

The Forward Ring Imaging Cherenkov detector covers both end-cap regions of the DELPHI experiment at LEP in the polar angle 15/spl deg/ >

Published
1994

7. The forward ring imaging cherenkov detector of DELPHI

Author

W. Dulinski, K. Pakonski, F. Montano, Andre Augustinus, E. Karvelas, P. Kindblom, N. Dimitriou, A.P. Budziak, B. Lund-Jensen, P. Carecchio, A. Korporaal, E. Zevgolatakos, D. Isenhower, S. Squarcia, Tord Ekelof, Borge Svane Nielsen, T. Henkes, O. Ullaland, Håkan T Johansson, C. Perdikis, E. Saragas, E. Schyns, E. Dahl-Jensen, Mario Sannino, L. O. Eek, G. Lenzen, Wolfgang Adam, Jorge-Armando Benitez Garcia, A. Fontanelle, C. Barnoux, F. Fontanelli, B. Koene, A. Robohm, R. Cereseto, G. Polok, A. Wärm, A. Florek, G. Damgaard, P. Cavalli, Allan Hallgren, A.S. de la Vega, L.-E. Lindqvist, N. de Koning, L. Mattsson, G. E. Theodosiou, J.M. Ostler, E. Albrecht, K. Galuszka, V. Gracco, J. Erikson, L. Ceelie, J. Werner, Marek Stodulski, G. Sajot, J. Thadome, M. Zavrtanik, A. Maltezos, B. Boštjančič, J. Medbo, P. Lorenz, P. Dam, Panos Kostarakis, Demetrios Loukas, Z. Stopa, W. Hao, Luiz Caloba, I. Ambec, L. Traspedini, Guillaume Cerutti, Olga Botner, A. Markou, B. Florek, Jerzy Michalowski, Georgios Stavropoulos, M. Turala, S. Xyroutsikos, Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), and Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics, Nuclear and High Energy Physics, Photon, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, business.industry, Cherenkov detector, Detector, Photodetector, 01 natural sciences, Particle detector, Particle identification, Ring-imaging Cherenkov detector, law.invention, Nuclear physics, Optics, law, 0103 physical sciences, High Energy Physics::Experiment, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Detectors and Experimental Techniques, 010306 general physics, business, Instrumentation, Cherenkov radiation
Abstract

The Forward Ring Imaging Cherenkov detector of the DELPHI experiment at LEP provides hadron identification at polar angles15° < θ < 35° and 145° < θ < 165°. Two radiator media, a layer of liquid C6F14 and a volume of gaseous C4F10, in combination provide coverage of momenta up to 40 GeV/c. A single array of photosensitive Time Projection Chambers registers the impact points of ultraviolet photons from both radiators. The design of the detector and of its readout system is described. First results obtained with a partly installed detector are reported.

Published
1994
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8. Performance of the forward RICH detector system at DELPHI

Author

T. Henkes, G. Lenzen, P. Cavalli, O. Ullaland, A. Markou, B. Koene, V. Gracco, L. Traspedini, Jorge-Armando Benitez Garcia, E. Schyns, Z. Stopa, J. Erikson, J. Medbo, R. Cereseto, M. Turala, Mario Sannino, A.S. de la Vega, L.-E. Lindqvist, P. Carechio, E. Albrecht, Georgios Stavropoulos, L. O. Eek, Guillaume Cerutti, S. Xyroutsikos, A. Wärm, A.P. Budziak, K. Pakonski, F. Fontanelli, H. Johansson, Jürgen H. Werner, Borge Svane Nielsen, M. Zavrtanik, F. Montano, Z. Thome, P. Lorenz, Tord Ekelof, E. Karvelas, W. Hao, N. Dimitriou, Bengt Lund-Jensen, B. Florek, Jerzy Michalowski, I. Ambec, A. Robohm, Marek Stodulski, G. Sajot, N. de Koning, W. Dulinski, A. Squarcia, O. Botner, A. Maltezos, C. Barnoux, L. Ceelie, Allan Hallgren, J. Thadome, C. Perdikes, Andre Augustinus, A. Korporaal, Demetrios Loukas, B. Boštjančič, Panos Kostarakis, A. Florek, G. Damgaard, E. Dahl-Jensen, K. Galuszka, Piet Van Dam, P. Kindblom, L. Mattsson, A. Fontenille, E. Zevgolatakos, D. Isenhower, Wolfgang Adam, E. Saragas, G. E. Theodosiou, G. Polok, bibliotheque, LPSC, Laboratoire de Physique Subatomique et de Cosmologie (LPSC), and Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)

Subjects
Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, 01 natural sciences, Particle identification, Particle detector, law.invention, Optics, law, 0103 physical sciences, Electrical and Electronic Engineering, 010306 general physics, Ultraviolet radiation, Cherenkov radiation, computer.programming_language, Physics, 010308 nuclear & particles physics, business.industry, Detector, Particle accelerator, Nuclear Energy and Engineering, Measuring instrument, Optoelectronics, High Energy Physics::Experiment, business, computer, Delphi
Abstract

One quarter of the Forward Ring Imaging Cherenkov (Forward RICH) detector has been installed and operated in the DELPHI experiment. The detector covers the forward-backward regions (15 degrees >

Published
1993

9. The use of a pair of time projection chambers as a wide-angle vertex detector for the Ω′ spectrometer at CERN

Author

S. Vitale, S. Benso, G. Darbo, L. Rossi, L. Traspedini, and Mario Sannino

Subjects
Nuclear physics, Physics, Large Hadron Collider, Spectrometer, Physics::Instrumentation and Detectors, Track (disk drive), General Engineering, Vertex (curve), Vertex detector, Detectors and Experimental Techniques, Projection (set theory), Beam (structure), Magnetic field
Abstract

A pair of time projection chambers has been tested in an 85GeV/ c π − beam. The chambers were placed inside the magnetic field of the Ω′ spectrometer at CERN. A description of the device and the associated electronics is given. Results obtained on track and vertex reconstruction accuracy are presented.

Published
1983
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10. The 'Roman pot' spectrometer and the vertex detector of experiment UA4 at the CERN SPS collider

Author

E. Drago, F. Cervelli, L. Traspedini, G. Roiron, M. Robert, L. Merola, Roberto Battiston, G. Sciacca, Rino Castaldi, J. Timmermans, J. Velasco, A. Morelli, B. Koene, R. Carrara, F. Visco, P. L. Braccini, H. Schuijlenburg, P. Rewiersma, Filippo Bosi, U. Cazzola, V. Palladino, Marco Bozzo, G. Chiefari, G. Sette, M. Haguenauer, R. Van Swol, R. Gorini, G. Matthiae, C. Vannini, J. Buskens, F. Carbonara, R. Maleyran, G. Sanguinetti, F. Manna, M. Napolitano, A. Bechini, R., Battiston, A., Bechini, F., Bosi, M., Bozzo, P. L., Braccini, J., Busken, F., Carbonara, R., Carrara, R., Castaldi, U., Cazzola, F., Cervelli, Chiefari, Giovanni, E., Drago, R., Gorini, M., Haguenauer, B., Koene, R., Maleyran, F., Manna, G., Matthiae, Merola, Leonardo, A., Morelli, Napolitano, Marco, Palladino, Vittorio, P., Rewiersma, M., Robert, G., Roiron, G., Sanguinetti, H., Schuijlenburg, Sciacca, Crisostomo, G., Sette, R., Van Swol, J., Timmerman, L., Traspedini, C., Vannini, J., Velasco, and F., Visco

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Large Hadron Collider, Spectrometer, Physics::Instrumentation and Detectors, Scattering, Roman pot, Charged particle, Nuclear physics, Hodoscope, Pseudorapidity, Physics::Accelerator Physics, High Energy Physics::Experiment, Vacuum chamber, Detectors and Experimental Techniques, Nuclear Experiment, Instrumentation
Abstract

We describe the apparatus used in experiment UA4 to study proton-antiproton elastic and inelastic interactions at the CERN SPS Collider. Elastically scattered particles, travelling at very small angles, are observed by detectors placed inside movable sections (“Roman pots”) of the SPS vacuum chamber. The deflection in the field of the machine quadrupoles allow the measurement of the particle momentum. Inelastic interactions are observed by a left-right symmetric system of trigger counter hodoscopes and drift-chamber telescopes. The apparatus reconstructs the interaction vertex and measures the pseudorapidity η of charged particles in the range 2.5 < ‖η‖ < 5.6.

Published
1985

11. The time projection chambers of the WA71 experiment at CERN

Author

G. Darbo, E. Spinolo, Lidia Rossi, S. Benso, E. Torcello, S. Vitale, Presented by L Rossi, Mario Sannino, and L.. Traspedini

Subjects
Nuclear physics, Physics, Vertex (computer graphics), Large Hadron Collider, Spectrometer, Physics::Instrumentation and Detectors, Track (disk drive), Calibration, Nuclear Experiment, Projection (set theory), Beam (structure), Magnetic field
Abstract

A pair of time projection chambers have been tested in an 85 GeV/c π− beam. These two chambers were placed inside the magnetic field of the Ω′ spectrometer at CERN. A new kind of multihit electronics for pads and wires has been optimized and tested. Results obtained on track and vertex reconstruction accuracy are presented.

Published
1984
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12. Attenuation length measurements in narrow drift channels

Author

L. Traspedini, Leonardo Paolo Rossi, Mario Sannino, and Valerio Gracco

Subjects
Physics, Nuclear and High Energy Physics, Atmospheric pressure, Field (physics), business.industry, Attenuation, Attenuation length, Electron, Optics, Volume (thermodynamics), Electric field, Orientation (geometry), Detectors and Experimental Techniques, Atomic physics, business, Instrumentation
Abstract

The attenuation length of electrons drifting under the action of a uniform electric field Ed in a long (1 m) and narrow (8×100 mm2) channel has been measured. The drift volume was filled with Ar+20% CH4 at atmospheric pressure. The measurement has been done without and with a 1.2 T solenoidal magnetic field whose orientation, relative to the Ed field, could be adjusted. Attenuation lengths larger than 4 m were measured.

Published
1986

13. Xenon time projection chamber for ββ decay

Author

C. Liguori, L. Zanotti, E. Bellotti, E. Fiorini, L.. Traspedini, Presented by L Rossi, Oliviero Cremonesi, Lidia Rossi, and S. Ragazzi

Subjects
Nuclear physics, Physics, Time projection chamber, Xenon, chemistry, High pressure, Measure (physics), chemistry.chemical_element, Beta decay
Abstract

The design of a time projection chamber (TPC) filled with Xe at high pressure is described. The aim of the project is to measure the neutrinoless ββ decay of 136Xe at the level of 1023 years. Guidelines for the choices made in the project and experimental results of prototypes are presented.

Published
1984
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