Performance Of The Hpc Calorimeter In Delphi

A. Chan,H. B. Crawley, D. M. Edsall,A. Firestone,M. S. Gorbics,L. Gorn,J. W. Lamsa,R. McKay,W. T. Meyer,E. I. Rosenberg,W. D. Thomas, M. R. Wayne,M. Boldini,F. Cavallo,V. Giordano, L. Maselli,F. L. Navarria,A. Perrotta,U. Rossi,G. Valenti,C. Bastie,W. Bell,H. Burmeister,T. Camporesi,A. Cattai,M. Feindt,H. Furstenau,D. Gillespie,J. Martin,S. Schael,R. Contri,G. Crosetti,G. Meola,A. Morelli,P. Morettini,G. Piana,M. Sannino,S. Squarcia,L. Traspedini,A. Algeri,R. Bohmer,W. De Boer, W. Kohler, B. Konig,C. Kreuter,O. Podobrin,A. Seitz,M. Wielers,W. Bonivento,M. Calvi,F. Chignoli,A. De Min,R. Leoni,R. Mazza,P. Negri,S. Ragazzi,T. Tabarelli de Fatis,A. Tonazzo,L. Cerrito,S. Colilli,E. Graziani,A. Passeri,P. Privitera, S. Sorrentino,E. Spiriti,C. Stanescu,L. Tortora,K. Cankocak,S. O. Holmgren,K. Hultqvist,R. Jacobsson,E. Johansson,M. Karlsson, T. Malgren,T. Moa,L. Thollander,K. Doraba,J. Krolikowski, M. Lewandowski,T. Marszal,R. Sosnowski,M. Szczekowski,M. Szeptycka,P. Szymanski

IEEE TRANSACTIONS ON NUCLEAR SCIENCE（1995）

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摘要

The performance of the High-density Projection Chamber (HPC), the barrel electromagnetic calorimeter of the DELPHI experiment, is described. The detector adopts the time projection technique in order to obtain exceptionally fine spatial granularity in the three coordinates (similar to 2 X 20 mrad(2) in theta x phi with nine samplings along the shower axes), using a limited number of readout channels (18,432). Among the various topics concerning the HPC construction and operation, major emphasis is given to the aspects related to the calibration in energy of the calorimeter, based mainly on the analysis of the detector response to (83)mKr decays, and to the treatment of ageing in the readout proportional counters.

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关键词

ageing,calibration,calorimeters,calorimetry,time projection chambers,83mKr decays,DELPHI,HPC calorimeter performance,High-density Projection Chamber,Kr,ageing,barrel electromagnetic calorimeter,calibration,detector response,fine spatial granularity,limited readout channels,readout proportional counters,time projection technique

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