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Performance analysis for the CALIFA Barrel calorimeter of the (RB)-B-3 experiment

Alvarez-Pol, H.; Ashwood, N.; Aumann, T.; Bertini, D.; Cabanelas, P.; Casarejos, E.; Cederkäll, Joakim LU ; Cortina-Gil, D.; Diaz Fernandez, P. and Duran, I., et al. (2014) In Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment 767. p.453-466
Abstract
The CALIFA calorimeter is an advanced detector for gamma rays and light charged particles, accordingly optimized for the demanding requirements of the physics programme proposed for the (RB)-B-3 facility at FAIR. The multipurpose character of CALIFA is required to fulfil challenging demands in energy resolution (5-6% at 1 MeV for gamma rays) and efficiency. Charged particles, e.g. protons of energies up to 320 MeV in the Barrel section, should also be identified with an energy resolution better to 1%. CALIFA is divided into two well-separated sections: a "Forward EndCap" and a cylindrical "Barrel" covering an angular range from 43.2 degrees to 140.3 degrees. The Barrel section, based on long CsI(Tl) pyramidal frustum crystals coupled to... (More)
The CALIFA calorimeter is an advanced detector for gamma rays and light charged particles, accordingly optimized for the demanding requirements of the physics programme proposed for the (RB)-B-3 facility at FAIR. The multipurpose character of CALIFA is required to fulfil challenging demands in energy resolution (5-6% at 1 MeV for gamma rays) and efficiency. Charged particles, e.g. protons of energies up to 320 MeV in the Barrel section, should also be identified with an energy resolution better to 1%. CALIFA is divided into two well-separated sections: a "Forward EndCap" and a cylindrical "Barrel" covering an angular range from 43.2 degrees to 140.3 degrees. The Barrel section, based on long CsI(Tl) pyramidal frustum crystals coupled to large area avalanche photodiodes (LAAPDs), attains the requested high efficiency for calorimetric purposes. The construction of the CALIFA Demonstrator, comprising 20% of the total detector, has already been initiated, and commissioning experiments are expected for 2014. The assessment of the capabilities and expected performance of the detector elements is a crucial step in their design, along with the prototypes evaluation. For this purpose, the Barrel geometry has been carefully implemented in the simulation package R3BRoot, including easily variable thicknesses of crystal wrapping and carbon fibre supports. A complete characterization of the calorimeter response (including efficiency, resolution, evaluation of energy and reconstruction losses) under different working conditions, with several physics cases selected to probe the detector performance over a wide range of applications, has been undertaken. Prototypes of different sections of the CALIFA Barrel have been modeled and their responses have been evaluated and compared with the experimental results. The present paper summarizes the outcome of the simulation campaign for the entire Barrel section and for the corresponding prototypes tested at different European installations. (C) 2014 Elsevier B.V. All rights reserved (Less)
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Calorimetry, Simulation, Gamma detection, Proton detection, Exotic, beams, Fast beams
in
Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment
volume
767
pages
453 - 466
publisher
Elsevier
external identifiers
  • wos:000344994600060
  • scopus:84908571853
ISSN
0167-5087
DOI
10.1016/j.nima.2014.09.018
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English
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49dea305-d89b-4f9f-bea0-9d93f40cd464 (old id 4982763)
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@article{49dea305-d89b-4f9f-bea0-9d93f40cd464,
  abstract     = {The CALIFA calorimeter is an advanced detector for gamma rays and light charged particles, accordingly optimized for the demanding requirements of the physics programme proposed for the (RB)-B-3 facility at FAIR. The multipurpose character of CALIFA is required to fulfil challenging demands in energy resolution (5-6% at 1 MeV for gamma rays) and efficiency. Charged particles, e.g. protons of energies up to 320 MeV in the Barrel section, should also be identified with an energy resolution better to 1%. CALIFA is divided into two well-separated sections: a "Forward EndCap" and a cylindrical "Barrel" covering an angular range from 43.2 degrees to 140.3 degrees. The Barrel section, based on long CsI(Tl) pyramidal frustum crystals coupled to large area avalanche photodiodes (LAAPDs), attains the requested high efficiency for calorimetric purposes. The construction of the CALIFA Demonstrator, comprising 20% of the total detector, has already been initiated, and commissioning experiments are expected for 2014. The assessment of the capabilities and expected performance of the detector elements is a crucial step in their design, along with the prototypes evaluation. For this purpose, the Barrel geometry has been carefully implemented in the simulation package R3BRoot, including easily variable thicknesses of crystal wrapping and carbon fibre supports. A complete characterization of the calorimeter response (including efficiency, resolution, evaluation of energy and reconstruction losses) under different working conditions, with several physics cases selected to probe the detector performance over a wide range of applications, has been undertaken. Prototypes of different sections of the CALIFA Barrel have been modeled and their responses have been evaluated and compared with the experimental results. The present paper summarizes the outcome of the simulation campaign for the entire Barrel section and for the corresponding prototypes tested at different European installations. (C) 2014 Elsevier B.V. All rights reserved},
  author       = {Alvarez-Pol, H. and Ashwood, N. and Aumann, T. and Bertini, D. and Cabanelas, P. and Casarejos, E. and Cederkäll, Joakim and Cortina-Gil, D. and Diaz Fernandez, P. and Duran, I. and Fiori, E. and Galaviz, D. and Labiche, M. and Nacher, E. and Pietras, B. and Savran, D. and Tengblad, O. and Teubig, P.},
  issn         = {0167-5087},
  keyword      = {Calorimetry,Simulation,Gamma detection,Proton detection,Exotic,beams,Fast beams},
  language     = {eng},
  pages        = {453--466},
  publisher    = {Elsevier},
  series       = {Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment},
  title        = {Performance analysis for the CALIFA Barrel calorimeter of the (RB)-B-3 experiment},
  url          = {http://dx.doi.org/10.1016/j.nima.2014.09.018},
  volume       = {767},
  year         = {2014},
}