Showing papers by "Ioannis Papadopoulos published in 2009"
TL;DR: In this paper, the response of the CMS barrel calorimeter (electromagnetic plus hadronic) to hadrons, electrons and muons over a wide momentum range from 2 to 350 GeV/c has been measured.
Abstract: The response of the CMS barrel calorimeter (electromagnetic plus hadronic) to hadrons, electrons and muons over a wide momentum range from 2 to 350 GeV/c has been measured. To our knowledge, this is the widest range of momenta in which any calorimeter system has been studied. These tests, carried out at the H2 beam-line at CERN, provide a wealth of information, especially at low energies. The analysis of the differences in calorimeter response to charged pions, kaons, protons and antiprotons and a detailed discussion of the underlying phenomena are presented. We also show techniques that apply corrections to the signals from the considerably different electromagnetic (EB) and hadronic (HB) barrel calorimeters in reconstructing the energies of hadrons. Above 5 GeV/c, these corrections improve the energy resolution of the combined system where the stochastic term equals 84.7±1.6% and the constant term is 7.4±0.8%. The corrected mean response remains constant within 1.3% rms.
37 citations
Istituto Nazionale di Fisica Nucleare1, University of Trieste2, CERN3, Russian Academy of Sciences4, University of Oxford5, University of Geneva6, University of Padua7, Sofia University8, University of Sheffield9, Joint Institute for Nuclear Research10, Spanish National Research Council11, University of Valencia12, Columbia University13, University of Ferrara14, Sapienza University of Rome15, University of Paris16, Rutherford Appleton Laboratory17, Technical University of Dortmund18, Catholic University of Leuven19, Karlsruhe Institute of Technology20, Los Alamos National Laboratory21, United States Department of Energy22, Roma Tre University23, University of Naples Federico II24, Bulgarian Academy of Sciences25
TL;DR: In this paper, the authors presented the PS detector design, construction, commissioning, and operation, and gratefully acknowledge the help and support of the PS beam staff and of the numerous technical collaborators who contributed to the detector design and construction.
Abstract: We gratefully acknowledge the help and support of the PS beam staff and of the numerous technical collaborators who contributed to the detector design, construction, commissioning and operation. In particular, we would like to thank G. Barichello, R. Brocard, K. Burin, V. Carassiti, F. Chignoli, D. Conventi, G. Decreuse, M. Delattre, C. Detraz, A. Domeniconi, M. Dwuznik, F. Evangelisti, B. Friend, A. Iaciofano, I. Krasin, D. Lacroix, J.-C. Legrand, M. Lobello, M. Lollo, J. Loquet, F. Marinilli, J. Mulon, L. Musa, R. Nicholson, A. Pepato, P. Petev, X. Pons, I. Rusinov, M. Scandurra, E. Usenko, and R. van der Vlugt, for their support in the construction of the detector. The collaboration acknowledges the major contributions and advice of M. Baldo-Ceolin, L. Linssen, M.T. Muciaccia and A. Pullia during the construction of the experiment. The collaboration is indebted to V. Ableev, P. Arce, F. Bergsma, P. Binko, E. Boter, C. Buttar, M. Calvi, M. Campanelli, C. Cavion, A. Chukanov, A. De Min, M. Doucet, D. Dullmann, R. Engel, V. Ermilova, W. Flegel, P. Gruber, Y. Hayato, P. Hodgson, A. Ichikawa, I. Kato, O. Klimov, T. Kobayashi, D. Kustov, M. Laveder, M. Mass, H. Meinhard, T. Nakaya, K. Nishikawa, M. Paganoni, F. Paleari, M. Pasquali, J. Pasternak, C. Pattison, M. Placentino, S. Robbins, G. Santin, V. Serdiouk, S. Simone, A. Tornero, S. Troquereau, S. Ueda, A. Valassi, F. Vannucci and K. Zuber for their contributions to the experiment and to P. Dini for help in MC production.
We acknowledge the contributions of V. Ammosov, G. Chelkov, D. Dedovich, F. Dydak, M. Gostkin, A. Guskov, D. Khartchenko, V. Koreshev, Z. Kroumchtein, I. Nefedov, A. Semak, J. Wotschack, V. Zaets and A. Zhemchugov to the work described in this paper.
The experiment was made possible by grants from the Institut Interuniversitaire des Sciences Nucleaires and the Interuniversitair Instituut voor Kernwetenschappen (Belgium), Ministerio de Educacion y Ciencia, Grant FPA2003-06921-c02-02 and Generalitat Valenciana, grant GV00-054-1, CERN (Geneva, Switzerland), the German Bundesministerium fur Bildung und Forschung (Germany), the Istituto Nazionale di Fisica Nucleare (Italy), INR RAS (Moscow), the Russian Foundation for Basic Research (grant 08-02-00018) and the Particle Physics and Astronomy Research Council (UK). We gratefully acknowledge their support. This work was supported in part by the Swiss National Science Foundation and the Swiss Agency for Development and Cooperation in the framework of the programme SCOPES - Scientific co-operation between Eastern Europe and Switzerland.
27 citations
Istituto Nazionale di Fisica Nucleare1, University of Trieste2, CERN3, Russian Academy of Sciences4, University of Oxford5, University of Geneva6, University of Padua7, Sofia University8, University of Sheffield9, Joint Institute for Nuclear Research10, Spanish National Research Council11, University of Valencia12, Columbia University13, University of Ferrara14, Sapienza University of Rome15, University of Paris16, Rutherford Appleton Laboratory17, Technical University of Dortmund18, Université catholique de Louvain19, Karlsruhe Institute of Technology20, Los Alamos National Laboratory21, United States Department of Energy22, Roma Tre University23, University of Naples Federico II24, Bulgarian Academy of Sciences25
TL;DR: In this paper, the double-differential π± production cross section in the range of momentum 0.5⩽p8.0 GeV/c and angle 0.025⩾θ0.25 rad in collisions of protons on beryllium, carbon, nitrogen, oxygen, aluminum, copper, tin, tantalum, and lead are presented.
Abstract: Measurements of the double-differential π± production cross section in the range of momentum 0.5⩽p⩽8.0 GeV/c and angle 0.025⩽θ⩽0.25 rad in collisions of protons on beryllium, carbon, nitrogen, oxygen, aluminum, copper, tin, tantalum, and lead are presented. The data were taken with the large-acceptance HAdRon Production (HARP) detector in the T9 beamline of the CERN Proton Synchrotron. Incident particles were identified by an elaborate system of beam detectors. Thin targets of 5% of a nuclear interaction length were used. The tracking and identification of the produced particles were performed using the forward system of the HARP experiment. Results are obtained for the double-differential cross sections d2σ/dp dΩ mainly at four incident proton beam momenta (3, 5, 8, and 12 GeV/c). Measurements are compared with the GEANT4 and MARS Monte Carlo generators. A global parametrization is provided as an approximation of all the collected datasets, which can serve as a tool for quick yield estimates
23 citations
TL;DR: In this article, the authors measured the response of the hadrons, electrons and muons over a wide momentum range from 2 to 350 GeV/c, and applied corrections to the signals from the considerably different electromagnetic (EB) and hadronic (HB) calorimeters in reconstructing the energies of hadrons.
Abstract: The response of the CMS barrel calorimeter (electromagnetic plus hadronic) to hadrons, electrons and muons over a wide momentum range from 2 to 350 GeV/c has been measured. To our knowledge, this is the widest range of momenta in which any calorimeter system has been studied. These tests, carried out at the H2 beam-line at CERN, provide a wealth of information, especially at low energies. The analysis of the differences in calorimeter response to charged pions, kaons, protons and antiprotons and a detailed discussion of the underlying phenomena are presented. We also show techniques that apply corrections to the signals from the considerably different electromagnetic (EB) and hadronic (HB) barrel calorimeters in reconstructing the energies of hadrons. Above 5 GeV/c, these corrections improve the energy resolution of the combined system where the stochastic term equals 84.7 ±1.6% and the constant term is 7.4 ±0.8%. The corrected mean response remains constant within 1.3 % rms. EPJ manuscript No. (will be inserted by the editor) The CMS Barrel Calorimeter Response to Particle Beams from 2 to 350 GeV/c CMS HCAL/ECAL Collaborations S. Abdullin, V. Abramov, B. Acharya, N. Adam, M. Adams, P. Adzic, N. Akchurin, U. Akgun, E. Albayrak, R. Alemany-Fernandez, N. Almeida, G. Anagnostou, D. Andelin, E. W. Anderson, M. Anfreville, I. Anicin, G. Antchev, Z. Antunovic, R. Arcidiacono, M. W. Arenton, E. Auffray, S. Argiro, A. Askew, O. Atramentov, S. Ayan, M. Arcidy, S. Aydin, T. Aziz, M. Baarmand, K. Babich, S. Baccaro, D. Baden, S. Baffioni, M. N. Bakirci, M. Balazs, Sud. Banerjee, Sun. Banerjee, R. Bard, D. Barge, V. Barnes, D. Barney, L. Barone, A. Bartoloni, C. Baty, H. Bawa, G. Baiatian, D. Bandurin, S. Beauceron, K. W. Bell, G. Bencze, R. Benetta, M. Bercher, S. Beri, C. Bernet, L. Berntzon, U. Berthon, M. Besancon, B. Betev, R. Beuselinck, V. Bhatnagar, A. Bhatti, C. Biino, J. Blaha, P. Bloch, S. Blyth, A. Bodek, A. Bornheim, S. Bose, T. Bose, J. Bourotte, A. M. Brett, R. M. Brown, D. Britton, H. Budd, M. Buehler, K. Burchesky, P. Busson, B. Camanzi, T. Camporesi, K. Cankoçak, K. Carrell, E. Carrera, N. Cartiglia, F. Cavallari, S. Cerci, M. Cerutti, P. Chang, Y. H. Chang, C. Charlot, E. A. Chen, W. T. Chen, Z. Chen, S. Chendvankar, R. Chipaux, B. C. Choudhary, R. K. Choudhury, Y. Chung, W. Clarida, D. J. A. Cockerill, C. Combaret, S. Conetti, F. Cossutti, B. Cox, L. Cremaldi, P. Cushman, D. G. Cussans, I. Dafinei, J. Damgov, D. R. Da Silva Di Calafiori, G. Daskalakis, G. Davatz, A. David, P. de Barbaro, P. Debbins, K. Deiters, M. Dejardin, M. Djordjevic, M. Deliomeroglu, R. Della Negra, G. Della Ricca, D. Del Re, A. Demianov, A. De Min, D. Denegri, P. Depasse, T. de Visser, J. Descamps, P. V. Deshpande, J. Diaz, M. Diemoz, E. Di Marco, L. Dimitrov, G. Dissertori, M. Dittmar, L. Djambazov, L. Dobrzynski, S. Drndarevic, J. E. Duboscq, S. Dugad, I. Dumanoglu, F. Duru, D. Dutta, M. Dzelalija, I. Efthymiopoulos, J. Elias, A. Elliott-Peisert, H. El Mamouni, D. Elvira, I. Emeliantchik, S. Eno, A. Ershov, S. Erturk, S. Esen, E. Eskut, I. Evangelou, D. L. Evans, B. Fabbro, J. L. Faure, J. Fay, A. Fenyvesi, F. Ferri, W. Fisher, P. S. Flower, D. Franci, G. Franzoni, J. Freeman, K. Freudenreich, W. Funk, S. Ganjour, C. Gargiulo, S. Gascon, M. Gataullin, V. Gaultney, H. Gamsizkan, V. Gavrilov, Y. Geerebaert, V. Genchev, F. X. Gentit, D. Gerbaudo, Y. Gershtein, A. Ghezzi, M. D. Ghodgaonkar, J. Gilly, A. Givernaud, S. Gleyzer, S. Gninenko, A. Go, B. Gobbo, N. Godinovic, N. Golubev, I. Golutvin, P. Goncharov, D. Gong, P. Govoni, N. Grant, P. Gras, T. Grassi, D. Green, R. J. S. Greenhalgh, A. Gribushin, B. Grinev, L. Guevara Riveros, J. P. Guillaud, A. Gurtu, A. Murat Güler, E. Gülmez, K. Gümüş, T. Haelen, S. Hagopian, V. Hagopian, M. Haguenauer, V. Halyo, G. Hamel de Monchenault, M. Hansen, M. Hashemi, J. Hauptman, E. Hazen, H. F. Heath, A. Heering, A. Heister, B. Heltsley, J. A. Hill, W. Hintz, R. Hirosky, P. R. Hobson, A. Honma, G. W. S. Hou, Y. Hsiung, A. Hunt, M. Husejko, B. Ille, N. Ilyina, R. Imlay, D. Ingram, Q. Ingram, E. Isiksal, P. Jarry, C. Jarvis, C. Jeong, C. Jessop, K. Johnson, J. Jones, D. Jovanovic, K. Kaadze, V. Kachanov, V. Kaftanov, S. Kailas, V. Kalagin, A. Kalinin, S. Kalmani, D. Karmgard, S. K. Kataria, M. Kaur, M. Kaya, O. Kaya, A. Kayis-Topaksu, R. Kellogg, B. W. Kennedy, A. Khmelnikov, H. Kim, I. Kisselevich, K. Kloukinas, O. Kodolova, J. Kohli, P. Kokkas, T. Kolberg, V. Kolossov, A. Korablev, Y. Korneev, I. Kosarev, L. Kramer, N. Krasnikov, A. Krinitsyn, A. Krokhotin, D. Krpic, V. Kryshkin, Y. Kubota, A. Kubrik, S. Kuleshov, A. Kumar, P. Kumar, S. Kunori, C. M. Kuo, P. Kurt, P. Kyberd, A. Kyriakis, A. Laasanen, V. Ladygin, E. Laird, G. Landsberg, A. Laszlo, C. Lawlor, D. Lazic, M. Lebeau, P. Lecomte, P. Lecoq, A. Ledovskoy, S.-W. Lee, G. Leshev, M. Lethuillier, L. Levchuk, S. W. Lin, W. Lin, S. Linn, A. L. Lintern, V. Litvine, D. Litvintsev, L. Litov, L. Lobolo, E. Locci, A. B. Lodge, E. Longo, D. Loukas, S. Los, V. Lubinsky, P. D. Luckey, V. Lukanin, W. Lustermann, C. Lynch, Y. Ma, E. Machado, H. Mahlke-Krueger, M. Maity, G. Majumder, M. Malberti, J. Malclès, D. Maletic, I. Mandjavidze, J. Mans, N. Manthos, Y. Maravin, C. Marchica, N. Marinelli, A. Markou, C. Markou, D. Marlow, P. Markowitz, M. Marone, G. Martinez, H. Mathez, V. Matveev, C. Mavrommatis, G. Maurelli, K. Mazumdar, P. Meridiani,
22 citations
CERN1, University of Oxford2, University of Geneva3, Sofia University4, University of Milano-Bicocca5, University of Sheffield6, Joint Institute for Nuclear Research7, Spanish National Research Council8, Columbia University9, Sapienza University of Rome10, Rutherford Appleton Laboratory11, Technical University of Dortmund12, Université catholique de Louvain13, Russian Academy of Sciences14, Los Alamos National Laboratory15, Bulgarian Academy of Sciences16
TL;DR: In this article, the authors acknowledge the help and support of the PS beam staff and of the numerous technical Collaborators who contributed to the detector design, construction, commissioning and operation.
19 citations
CERN1
TL;DR: In this article, the authors presented the PS detector design, construction, commissioning, and operation, and gratefully acknowledge the help and support of the PS beam staff and of the numerous technical collaborators who contributed to the detector design and construction.
Abstract: We gratefully acknowledge the help and support of the PS beam staff and of the numerous technical collaborators who contributed to the detector design, construction, commissioning and operation. In particular, we would like to thank G. Barichello, R. Brocard, K. Burin, V. Carassiti, F. Chignoli, D. Conventi, G. Decreuse, M. Delattre, C. Detraz, A. Domeniconi, M. Dwuznik, F. Evangelisti, B. Friend, A. Iaciofano, I. Krasin, D. Lacroix, J.-C. Legrand, M. Lobello, M. Lollo, J. Loquet, F. Marinilli, J. Mulon, L. Musa, R. Nicholson, A. Pepato, P. Petev, X. Pons, I. Rusinov, M. Scandurra, E. Usenko, and R. van der Vlugt, for their support in the construction of the detector. The collaboration acknowledges the major contributions and advice of M. Baldo-Ceolin, L. Linssen, M.T. Muciaccia and A. Pullia during the construction of the experiment. The collaboration is indebted to V. Ableev, P. Arce, F. Bergsma, P. Binko, E. Boter, C. Buttar, M. Calvi, M. Campanelli, C. Cavion, A. Chukanov, A. De Min, M. Doucet, D. Dullmann, R. Engel, V. Ermilova, W. Flegel, P. Gruber, Y. Hayato, P. Hodgson, A. Ichikawa, I. Kato, O. Klimov, T. Kobayashi, D. Kustov, M. Laveder, M. Mass, H. Meinhard, T. Nakaya, K. Nishikawa, M. Paganoni, F. Paleari, M. Pasquali, J. Pasternak, C. Pattison, M. Placentino, S. Robbins, G. Santin, V. Serdiouk, S. Simone, A. Tornero, S. Troquereau, S. Ueda, A. Valassi, F. Vannucci and K. Zuber for their contributions to the experiment and to P. Dini for help in MC production.
We acknowledge the contributions of V. Ammosov, G. Chelkov, D. Dedovich, F. Dydak, M. Gostkin, A. Guskov, D. Khartchenko, V. Koreshev, Z. Kroumchtein, I. Nefedov, A. Semak, J. Wotschack, V. Zaets and A. Zhemchugov to the work described in this paper.
The experiment was made possible by grants from the Institut Interuniversitaire des Sciences Nucleaires and the Interuniversitair Instituut voor Kernwetenschappen (Belgium), Ministerio de Educacion y Ciencia, Grant FPA2003-06921-c02-02 and Generalitat Valenciana, grant GV00-054-1, CERN (Geneva, Switzerland), the German Bundesministerium fur Bildung und Forschung (Germany), the Istituto Nazionale di Fisica Nucleare (Italy), INR RAS (Moscow), the Russian Foundation for Basic Research (grant 08-02-00018) and the Particle Physics and Astronomy Research Council (UK). We gratefully acknowledge their support. This work was supported in part by the Swiss National Science Foundation and the Swiss Agency for Development and Cooperation in the framework of the programme SCOPES - Scientific co-operation between Eastern Europe and Switzerland.
8 citations
Journal Article•
2 citations