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Performance of the prototype of the electromagnetic calorimeter for PANDA

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Title: Performance of the prototype of the electromagnetic calorimeter for PANDA
Authors: Kavatsyuk, M.1 M.Kavatsyuk@rug.nl, Bremer, D.2, Dormenev, V.2, Drexler, P.2, Eissner, T.2, Erni, W.3, Guliyev, E.1, Hennino, T.4, Krusche, B.3, Lewandowski, B.5, Löhner, H.1, Moritz, M.2, Novotny, R.W.2, Peters, K.5,6, Pouthas, J.4, Rosier, P.4, Steinacher, M.3, Tambave, G.1, Wilms, A.5
Source: Nuclear Instruments & Methods in Physics Research Section A. Aug2011, Vol. 648 Issue 1, p77-91. 15p.
Subjects: Electromagnetism, Prototypes, Calorimeters, Proton & antiproton annihilation, Mesons, Quantum chromodynamics, Digital filters (Mathematics)
Geographic Terms: Germany
Abstract: Abstract: The PANDA collaboration at FAIR, Germany, will employ antiproton annihilations to investigate yet undiscovered charm-meson states and glueballs. The aim is to study QCD phenomena in the non-perturbative regime and to unravel the origin of hadronic masses. A multi-purpose detector for tracking, calorimetry and particle identification is presently being developed to run at high luminosities providing up to interactions/s. One of the crucial components of the PANDA spectrometer is the Electromagnetic Calorimeter, composed of cooled PbWO4 crystals. This paper describes construction and performance of a fully functioning prototype of this calorimeter. The performance was determined from measurements exploiting cosmic muons and high-energy tagged photons from the MAMI-C electron accelerator. The response measurements were carried out using sampling ADCs and, for comparison, charge-integrating ADCs. The achieved results validate the usage of sampling ADCs with a moderate sampling frequency, provide the energy resolution as foreseen in the Technical Design Report of the full calorimeter, and secure event correlation by achieving a good timing resolution through digital analysis of the sampled signals. [Copyright &y& Elsevier]
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Database: Engineering Source
Description
Abstract:Abstract: The PANDA collaboration at FAIR, Germany, will employ antiproton annihilations to investigate yet undiscovered charm-meson states and glueballs. The aim is to study QCD phenomena in the non-perturbative regime and to unravel the origin of hadronic masses. A multi-purpose detector for tracking, calorimetry and particle identification is presently being developed to run at high luminosities providing up to interactions/s. One of the crucial components of the PANDA spectrometer is the Electromagnetic Calorimeter, composed of cooled PbWO4 crystals. This paper describes construction and performance of a fully functioning prototype of this calorimeter. The performance was determined from measurements exploiting cosmic muons and high-energy tagged photons from the MAMI-C electron accelerator. The response measurements were carried out using sampling ADCs and, for comparison, charge-integrating ADCs. The achieved results validate the usage of sampling ADCs with a moderate sampling frequency, provide the energy resolution as foreseen in the Technical Design Report of the full calorimeter, and secure event correlation by achieving a good timing resolution through digital analysis of the sampled signals. [Copyright &y& Elsevier]
ISSN:01689002
DOI:10.1016/j.nima.2011.06.044