CERN Accelerating science

CMS Note
Report number CMS-NOTE-2008-018
Title Intercalibration of the barrel electromagnetic calorimeter of the CMS experiment at start-up
Author(s)

Adzic, Petar (VINCA Inst. Nucl. Sci., Belgrade) ; Alemany-Fernandez, Reyes (Lisbon, LIFEP) ; Almeida, Nuno (Lisbon, LIFEP) ; Anagnostou, Georgios (Democritos Nucl. Res. Ctr.) ; Andelin, Daniel (Virginia U.) ; Anfreville, Marc (DSM, DAPNIA, Saclay) ; Anicin, Ivan (Belgrade U. ; VINCA Inst. Nucl. Sci., Belgrade) ; Antunovic, Zeljko (Split U.) ; Arcidiacono, Roberta (INFN, Turin) ; Arenton, Michael Wayne (Virginia U.) ; Auffray, Etiennette (CERN) ; Argiro, Stefano (INFN, Turin) ; Askew, Andrew (Florida State U.) ; Atramentov, Oleksiy (Florida State U.) ; Baccaro, Stefania (ENEA, S. Maria di Galeria ; INFN, Rome ; Rome U.) ; Baffioni, Stephanie (Ecole Polytechnique) ; Balazs, Michael (Virginia U.) ; Barney, David (CERN) ; Barone, Luciano (INFN, Rome ; Rome U.) ; Bartoloni, Alessandro (INFN, Rome ; Rome U.) ; Baty, Clement (Lyon, IPN) ; Bandurin, Dmitry (Kansas State U.) ; Beauceron, Stephanie (CERN) ; Bell, Ken W (Rutherford) ; Benetta, Robert (CERN) ; Bercher, Michel (Ecole Polytechnique) ; Bernet, Colin (Ecole Polytechnique) ; Berthon, Ursula (Ecole Polytechnique) ; Besançon, Marc (DSM, DAPNIA, Saclay) ; Betev, Botjo (Zurich, ETH) ; Beuselinck, Raymond (Imperial Coll., London) ; Biino, Cristina (INFN, Turin) ; Blaha, Jan (Lyon, IPN) ; Bloch, Philippe (CERN) ; Blyth, Simon (Taiwan, Natl. Central U.) ; Bornheim, Adolf (Caltech) ; Bourotte, Jean (Ecole Polytechnique) ; Brett, Angela Mary (Zurich, ETH) ; Brown, Robert M (Rutherford) ; Britton, David (Imperial Coll., London) ; Bühler, M (Virginia U.) ; Busson, Philippe (Ecole Polytechnique) ; Camanzi, Barbara (Rutherford) ; Camporesi, Tiziano (CERN) ; Carrera, E (Florida State U.) ; Cartiglia, Nicolo (INFN, Turin) ; Cavallari, Francesca (INFN, Rome ; Rome U.) ; Cerutti, Muriel (Ecole Polytechnique) ; Chang, Paoti (Taiwan, Natl. Taiwan U.) ; Chang, You-Hao (Taiwan, Natl. Central U.) ; Charlot, Claude (Ecole Polytechnique) ; Chen, E Augustine (Taiwan, Natl. Central U.) ; Chen, Wan-Ting (Taiwan, Natl. Central U.) ; Chen, Zheng-Yu (Zurich, ETH) ; Chipaux, Rémi (DSM, DAPNIA, Saclay) ; Choudhary, Brajesh C (Delhi U.) ; Choudhury, Rajani Kant (Bhabha Atomic Res. Ctr.) ; Cockerill, David J A (Rutherford) ; Combaret, Christophe (Lyon, IPN) ; Conetti, Sergio (Virginia U.) ; Cossutti, Fabio (INFN, Trieste ; Trieste U.) ; Cox, Bradley (Virginia U.) ; Cussans, David (Bristol U.) ; Dafinei, Ioan (INFN, Rome ; Rome U.) ; Da Silva Di Calafiori, Diogo Raphael (Zurich, ETH) ; Daskalakis, Georgios (Democritos Nucl. Res. Ctr.) ; Davatz, Giovanna (Zurich, ETH) ; David, A (Lisbon, LIFEP) ; Deiters, Konrad (Villigen, PSI) ; Dejardin, Marc (DSM, DAPNIA, Saclay) ; Djordjevic, Milos (VINCA Inst. Nucl. Sci., Belgrade) ; Della Negra, Rodolphe (Lyon, IPN) ; Della Ricca, Giuseppe (INFN, Trieste ; Trieste U.) ; Del Re, Daniele (INFN, Rome ; Rome U.) ; De Min, Alberto (Milan Bicocca U. ; INFN, Milan Bicocca) ; Denegri, Daniel (DSM, DAPNIA, Saclay) ; Depasse, Pierre (Lyon, IPN) ; Descamps, Julien (DSM, DAPNIA, Saclay) ; Diemoz, Marcella (INFN, Rome ; Rome U.) ; Di Marco, Emanuele (INFN, Rome ; Rome U.) ; Dissertori, Günther (Zurich, ETH) ; Dittmar, Michael (Zurich, ETH) ; Djambazov, Lubomir (Zurich, ETH) ; Dobrzynski, Ludwik (Ecole Polytechnique) ; Drndarevic, Snezana (Belgrade U. ; VINCA Inst. Nucl. Sci., Belgrade) ; Duboscq, Jean Etienne (Cornell U., Ithaca, Phys. Dept. ) ; Dutta, Dipanwita (Bhabha Atomic Res. Ctr.) ; Dzelalija, Mile (Split U.) ; Peisert, A (CERN) ; El-Mamouni, H (Lyon, IPN) ; Evangelou, Ioannis (Ioannina U.) ; Evans, David (Rutherford) ; Fabbro, Bernard (DSM, DAPNIA, Saclay) ; Faure, Jean-Louis (DSM, DAPNIA, Saclay) ; Fay, Jean (Lyon, IPN) ; Ferri, Federico (DSM, DAPNIA, Saclay) ; Flower, Paul S (Rutherford) ; Franci, Daniele (INFN, Rome ; Rome U.) ; Franzoni, Giovanni (Minnesota U.) ; Freudenreich, Klaus (Zurich, ETH) ; Funk, Wolfgang (CERN) ; Ganjour, Serguei (DSM, DAPNIA, Saclay) ; Gargiulo, Corrado (INFN, Rome ; Rome U.) ; Gascon, Susan (Lyon, IPN) ; Gataullin, Marat (Caltech) ; Geerebaert, Yannick (Ecole Polytechnique) ; Gentit, François-Xavier (DSM, DAPNIA, Saclay) ; Gershtein, Yuri (Florida State U.) ; Ghezzi, Alessio (CERN ; Milan Bicocca U. ; INFN, Milan Bicocca) ; Ghodgaonkar, Manohar (Bhabha Atomic Res. Ctr.) ; Gilly, Jean (Ecole Polytechnique) ; Givernaud, Alain (DSM, DAPNIA, Saclay) ; Gninenko, Sergei (Moscow, INR) ; Go, Apollo (Taiwan, Natl. Central U.) ; Gobbo, Benigno (INFN, Trieste ; Trieste U.) ; Godinovic, Nikola (Split Tech. U.) ; Golubev, Nikolai (Moscow, INR) ; Gong, Datao (Minnesota U.) ; Govoni, Pietro (Milan Bicocca U. ; INFN, Milan Bicocca) ; Grant, Nicholas (Bristol U.) ; Gras, Philippe (DSM, DAPNIA, Saclay) ; Greenhalgh, R J S (Rutherford) ; Guevara Riveros, Luz (Ecole Polytechnique) ; Guillaud, Jean-Paul (Annecy, LAPP) ; Haguenauer, Maurice (Ecole Polytechnique) ; Hamel de Monchenault, Gautier (DSM, DAPNIA, Saclay) ; Hansen, Magnus (CERN) ; Heath, Helen F (Bristol U.) ; Heltsley, Brian (Cornell U., Ithaca, Phys. Dept. ) ; Hill, Jack (Rutherford) ; Hintz, Wieland (Zurich, ETH) ; Hirosky, Robert (Virginia U.) ; Hobson, Peter R (Brunel U.) ; Honma, Alan (CERN) ; Hou, George Wei-Shu (Taiwan, Natl. Taiwan U.) ; Hsiung, Yee (Taiwan, Natl. Taiwan U.) ; Husejko, Michal (Lisbon, LIFEP) ; Ille, Bernard (Lyon, IPN) ; Imlay, Richard (Virginia U.) ; Ingram, Quentin (Villigen, PSI) ; Jarry, Patrick (DSM, DAPNIA, Saclay) ; Jessop, Colin (Notre Dame U.) ; Jovanovic, Dragoslav (Belgrade U. ; VINCA Inst. Nucl. Sci., Belgrade) ; Kaadze, Ketino (Kansas State U.) ; Kachanov, Vassili (Serpukhov, IHEP) ; Kailas, Swaminathan (Bhabha Atomic Res. Ctr.) ; Kataria, Sushil Kumar (Bhabha Atomic Res. Ctr.) ; Kennedy, Bruce W (Rutherford) ; Kloukinas, Kostas (CERN) ; Kokkas, Panagiotis (Ioannina U.) ; Kolberg, Ted (Notre Dame U.) ; Krasnikov, Nikolai (Moscow, INR) ; Krpic, Dragomir (Belgrade U. ; VINCA Inst. Nucl. Sci., Belgrade) ; Kubota, Yuichi (Minnesota U.) ; Kumar, P (Bhabha Atomic Res. Ctr.) ; Kuo, Chen-Cheng (Taiwan, Natl. Central U.) ; Kyberd, Paul (Brunel U.) ; Kyriakis, Aristotelis (Democritos Nucl. Res. Ctr.) ; Lebeau, Michel (CERN) ; Lecomte, Pierre (Zurich, ETH) ; Lecoq, Paul (CERN) ; Ledovskoy, Alexander (Virginia U.) ; Leshev, Georgi (Zurich, ETH) ; Lethuillier, Morgan (Lyon, IPN) ; Lin, Sheng-Wen (Taiwan, Natl. Taiwan U.) ; Lin, Willis (Taiwan, Natl. Central U.) ; Lintern, A L (Rutherford) ; Litvine, Vladimir (Caltech) ; Locci, Elizabeth (DSM, DAPNIA, Saclay) ; Lodge, Anthony B (Rutherford) ; Longo, Egidio (INFN, Rome ; Rome U.) ; Loukas, Demetrios (Democritos Nucl. Res. Ctr.) ; Luckey, Paul David (Zurich, ETH) ; Lustermann, Werner (Zurich, ETH) ; Lynch, Clare (Bristol U.) ; Ma, Yousi (Caltech) ; Mahlke-Krüger, H (Cornell U., Ithaca, Phys. Dept. ) ; Malberti, Martina (Milan Bicocca U. ; INFN, Milan Bicocca) ; Malcles, Julie (DSM, DAPNIA, Saclay) ; Maletic, Dimitrije (VINCA Inst. Nucl. Sci., Belgrade) ; Mandjavidze, Irakli (DSM, DAPNIA, Saclay) ; Manthos, Nikolaos (Ioannina U.) ; Maravin, Yurii (Kansas State U.) ; Marchica, Carmelo (Zurich, ETH ; Villigen, PSI) ; Marinelli, Nancy (Notre Dame U.) ; Markou, Athanasios (Democritos Nucl. Res. Ctr.) ; Markou, Christos (Democritos Nucl. Res. Ctr.) ; Marone, Matteo (INFN, Turin) ; Mathez, Hervé (Lyon, IPN) ; Matveev, Viktor (Moscow, INR) ; Mavrommatis, Charalampos (Democritos Nucl. Res. Ctr.) ; Maurelli, Georges (Lyon, IPN) ; Meridiani, Paolo (CERN) ; Milenovic, Predrag (Zurich, ETH ; VINCA Inst. Nucl. Sci., Belgrade) ; Milleret, Gérard (Ecole Polytechnique) ; Miné, Philippe (Ecole Polytechnique) ; Mohanty, Ajit Kumar (Bhabha Atomic Res. Ctr.) ; Moortgat, Filip (Zurich, ETH) ; Mur, Michel (DSM, DAPNIA, Saclay) ; Musella, Pasquale (Lisbon, LIFEP) ; Musienko, Yuri (Northeastern U. ; Moscow, INR) ; Nardulli, Alessandro (Zurich, ETH) ; Nash, Jordan (Imperial Coll., London) ; Nédélec, Patrick (Annecy, LAPP) ; Negri, Pietro (Milan Bicocca U. ; INFN, Milan Bicocca) ; Newman, Harvey B (Caltech) ; Nikitenko, Alexander (Moscow, ITEP ; Imperial Coll., London) ; Nessi-Tedaldi, Francesca (Zurich, ETH) ; Obertino, Maria Margherita (INFN, Turin) ; Organtini, Giovanni (INFN, Rome ; Rome U.) ; Orimoto, Toyoko (Caltech) ; Paganoni, Marco (Milan Bicocca U. ; INFN, Milan Bicocca) ; Paganini, Pascal (Ecole Polytechnique) ; Palma, Alessandro (INFN, Rome ; Rome U.) ; Panev, Bozhidar (Sofiya, Inst. Nucl. Res. ; Zurich, ETH) ; Pant, Lalit Mohan (Bhabha Atomic Res. Ctr.) ; Papadakis, Antonakis (Cyprus U.) ; Papadakis, Ioannis (Democritos Nucl. Res. Ctr.) ; Papadopoulos, Ioannis (Ioannina U.) ; Paramatti, Riccardo (INFN, Rome ; Rome U.) ; Parracho, P (Lisbon, LIFEP) ; Pastrone, Nadia (INFN, Turin) ; Patterson, Juliet Ritchie (Cornell U., Ithaca, Phys. Dept. ) ; Pauss, Felicitas (Zurich, ETH) ; Petrakou, Eleni (Democritos Nucl. Res. Ctr.) ; Phillips, D G (Virginia U.) ; Piroué, Pierre (Princeton U.) ; Ptochos, Fotios (Cyprus U.) ; Puljak, Ivica (Split Tech. U.) ; Pullia, Antonino (Milan Bicocca U. ; INFN, Milan Bicocca) ; Punz, Thomas (Zurich, ETH) ; Puzovic, Jovan (Belgrade U. ; VINCA Inst. Nucl. Sci., Belgrade) ; Ragazzi, Stefano (Milan Bicocca U. ; INFN, Milan Bicocca) ; Rahatlou, Shahram (INFN, Rome ; Rome U.) ; Rander, John (DSM, DAPNIA, Saclay) ; Razis, Panos A (Cyprus U.) ; Redaelli, Nicola (Milan Bicocca U. ; INFN, Milan Bicocca) ; Renker, Dieter (Villigen, PSI) ; Reucroft, Steve (Northeastern U.) ; Reymond, Jean-Marc (DSM, DAPNIA, Saclay) ; Ribeiro, Pedro Quinaz (Lisbon, LIFEP) ; Röser, Ulf (Zurich, ETH) ; Rogan, Christopher (Caltech) ; Romanteau, Thierry (Ecole Polytechnique) ; Rondeaux, Françoise (DSM, DAPNIA, Saclay) ; Ronquest, Michael (Virginia U.) ; Rosowsky, André (DSM, DAPNIA, Saclay) ; Rovelli, Chiara (INFN, Rome ; Rome U.) ; Rumerio, Paolo (CERN) ; Rusack, Roger (Minnesota U.) ; Rusakov, Sergey V (Lebedev Inst.) ; Ryan, Matthew John (Imperial Coll., London) ; Sala, Leonardo (Milan Bicocca U. ; INFN, Milan Bicocca) ; Salerno, Roberto (Milan Bicocca U. ; INFN, Milan Bicocca) ; Santanastasio, Francesco (INFN, Rome ; Rome U.) ; Schinzel, Dietrich (Zurich, ETH) ; Seez, Christopher (Imperial Coll., London) ; Sharp, Peter (Imperial Coll., London ; CERN) ; Shepherd-Themistocleous, Claire (Rutherford) ; Siamitros, Christos (Brunel U.) ; Sillou, Daniel (Annecy, LAPP) ; Singovsky, Alexander (Minnesota U.) ; Sirois, Yves (Ecole Polytechnique) ; Sirunyan, Albert M (Yerevan Phys. Inst.) ; Silva, J (Lisbon, LIFEP) ; Silva, Pedro (Lisbon, LIFEP) ; Shiu, Jing-Ge (Taiwan, Natl. Taiwan U.) ; Shivpuri, Ram Krishen (Delhi U.) ; Shukla, Prashant (Bhabha Atomic Res. Ctr.) ; Smith, Brian (Rutherford) ; Smith, Vincent J (Bristol U.) ; Sproston, Martin (Rutherford) ; Stöckli, Fabian (Zurich, ETH) ; Suter, Henry (Zurich, ETH) ; Swain, John (Northeastern U.) ; Tabarellide Fatis, T (Milan Bicocca U. ; INFN, Milan Bicocca) ; Takahashi, Maiko (Imperial Coll., London) ; Tcheremoukhine, Alexandre (Dubna, JINR) ; Teller, Olivier (CERN) ; Theofilatos, Konstantinos (Democritos Nucl. Res. Ctr.) ; Thiebaux, Christophe (Ecole Polytechnique) ; Timciuc, Vladlen (Caltech) ; Timlin, Claire (Imperial Coll., London) ; Titov, Maksym (DSM, DAPNIA, Saclay) ; Tobias, A (Virginia U.) ; Topkar, Anita (Bhabha Atomic Res. Ctr.) ; Triantis, Frixos A (Ioannina U.) ; Troshin, Sergey (Serpukhov, IHEP) ; Tyurin, Nikolay (Serpukhov, IHEP) ; Ueno, Koji (Taiwan, Natl. Taiwan U.) ; Uzunian, Andrey (Serpukhov, IHEP) ; Varela, Joao (CERN ; Lisbon, LIFEP) ; Verrecchia, Patrice (DSM, DAPNIA, Saclay) ; Veverka, Jan (Caltech) ; Vichoudis, Paschalis (CERN) ; Virdee, Tejinder (Imperial Coll., London ; CERN) ; Vlassov, E (Moscow, ITEP ; CERN) ; Von Gunten, Hans Peter (Zurich, ETH) ; Wang, Minzu (Taiwan, Natl. Taiwan U.) ; Wardrope, David (Imperial Coll., London) ; Weber, Markus (Zurich, ETH) ; Weng, Joanna (Zurich, ETH) ; Williams, Jennifer C (Rutherford) ; Yang, Yong (Caltech) ; Yaselli, Ignacio (Brunel U.) ; Yohay, Rachel (Virginia U.) ; Zabi, Alexandre (Ecole Polytechnique) ; Zamiatin, Nikolai (Dubna, JINR) ; Zelepoukine, Serguei (Zurich, ETH ; Serpukhov, IHEP) ; Zhang, Jia-Wen (Minnesota U.) ; Zhang, Lin (Caltech) ; Zhu, Kejun (Caltech) ; Zhu, Ren-Yuan (Caltech)

Publication 2008
Imprint 18 Aug 2008
Number of pages 15
In: JINST 3 (2008) P10007
DOI 10.1088/1748-0221/3/10/P10007
Subject category Detectors and Experimental Techniques
Accelerator/Facility, Experiment CERN LHC ; CMS
CERN SPS
CERN SPS
Test beam H2 ; H4
Free keywords ECAL
Abstract Calibration of the relative response of the individual channels of the barrel electromagnetic calorimeter of the CMS detector was accomplished before installation with cosmic ray muons and test beams. One fourth of the calorimeter was exposed to a beam of high energy electrons and the relative calibration of the channels, the intercalibration, was found to be reproducible to a precision of about 0.3\%. Additionally, data were collected with cosmic rays for the entire ECAL barrel during the commissioning phase. By comparing the intercalibration constants obtained with the electron beam data with those from the cosmic ray data, it is demonstrated that the latter provide an intercalibration precision of 1.5\% over most of the ECAL. The best intercalibration precision is expected to come from the analysis of events collected {\it in situ} during the LHC operation. Using data collected with both electrons and pion beams, several aspects of the intercalibration procedures based on electrons or neutral pions were investigated.
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