https://doi.org/10.1140/epjc/s10052-009-0959-5
Regular Article - Experimental Physics
The CMS barrel calorimeter response to particle beams from 2 to 350 GeV/c
1
Yerevan Physics Institute, Yerevan, Armenia
2
NCPHEP, Minsk, Belarus
3
Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Science, Sofia, Bulgaria
4
Sofia University, Sofia, Bulgaria
5
Technical University of Split, Split, Croatia
6
University of Split, Split, Croatia
7
University of Cyprus, Nicosia, Cyprus
8
Laboratoire d’Annecy-le-Vieux de Physique des Particules, IN2P3-CNRS, Annecy-le-Vieux, France
9
DSM/DAPNIA, CEA/Saclay, Gif-sur-Yvette, France
10
Laboratoire Leprince-Ringuet, Ecole Polytechnique, IN2P3-CNRS, Palaiseau, France
11
Institut de Physique Nucléaire de Lyon, Université Lyon 1, CNRS/IN2P3, Villeurbanne, France
12
Institute of Nuclear Physics “Demokritos”, Aghia Paraskevi, Greece
13
University of Ioánnina, Ioánnina, Greece
14
KFKI-RMKI, Research Institute for Particle and Nuclear Physics, Budapest, Hungary
15
ATOMKI, Debrecen, Hungary
16
Panjab University, Chandigarh, India
17
University of Delhi, Delhi, India
18
Bhabha Atomic Research Centre, Mumbai, India
19
Tata Institute of Fundamental Research, Mumbai, India
20
Institute for Studies in Theoretical Physics and Sharif University of Technology, Tehran, Iran
21
Istituto Nazionale di Fisica Nucleare e Universita Degli Studi Milano Bicocca, Milano, Italy
22
Università di Roma I e Sezione dell’ INFN, Roma, Italy
23
Università di Torino e Sezione dell’ INFN, Torino, Italy
24
Università di Trieste e Sezione dell’ INFN, Trieste, Italy
25
Laboratório de Instrumentação e Física Experimental de Partículas, Lisboa, Portugal
26
JINR, Dubna, Russia
27
Institute for Nuclear Research, Moscow, Russia
28
ITEP, Moscow, Russia
29
Lebedev Physical Institute, Moscow, Russia
30
Moscow State University, Moscow, Russia
31
IHEP, Protvino, Russia
32
University of Belgrade, Belgrade, Serbia
33
Vinca Institute of Nuclear Sciences, Belgrade, Serbia
34
CERN, European Organisation for Nuclear Research, Geneva, Switzerland
35
Paul Scherrer Institut, Villigen, Switzerland
36
Institute for Particle Physics, ETH Zurich, Zurich, Switzerland
37
National Central University, Chung-Li, Taiwan
38
National Taiwan University (NTU), Taipei, Taiwan
39
Çukurova University, Adana, Turkey
40
Middle East Technical University, Ankara, Turkey
41
Boğaziçi University, Istanbul, Turkey
42
KIPT, Kharkov, Ukraine
43
Single Crystal Institute, Kharkov, Ukraine
44
University of Bristol, Bristol, UK
45
Rutherford Appleton Laboratory, Didcot, UK
46
Imperial College, University of London, London, UK
47
Brunel University, Uxbridge, UK
48
Iowa State University, Ames, IA, USA
49
Fermi National Accelerator Laboratory, Batavia, IL, USA
50
Boston University, Boston, MA, USA
51
Northeastern University, Boston, MA, USA
52
University of Virginia, Charlottesville, VA, USA
53
University of Illinois at Chicago, Chicago, IL, USA
54
University of Maryland, College Park, MD, USA
55
Northwestern University, Evanston, IL, USA
56
Fairfield University, Fairfield, CT, USA
57
University of Iowa, Iowa City, IA, USA
58
Cornell University, Ithaca, NY, USA
59
Texas Tech University, Lubbock, TX, USA
60
Kansas State University, Manhattan, KS, USA
61
Florida Institute of Technology, Melbourne, FL, USA
62
Florida International University, Miami, FL, USA
63
University of Minnesota, Minneapolis, MN, USA
64
Rockefeller University, New York, NY, USA
65
University of Notre Dame, Notre Dame, IN, USA
66
University of Mississippi, Oxford, MS, USA
67
California Institute of Technology, Pasadena, CA, USA
68
Princeton University, Princeton, NJ, USA
69
Brown University, Providence, RI, USA
70
University of Rochester, Rochester, NY, USA
71
Florida State University, Tallahassee, FL, USA
72
Purdue University, West Lafayette, IN, USA
* e-mail: nural.akchurin@ttu.edu
Received:
29
June
2008
Revised:
24
November
2008
Published online:
3
March
2009
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.
© Springer-Verlag , 2009
