Performance of the HPC calorimeter in DELPHI

Author

Chan, A. ; Crawley, H.B. ; Edsall, D.M. ; Firestone, A. ; Gorbics, M.S. ; Gorn, L. ; Lamsa, J.W. ; McKay, R. ; Meyer, W.T. ; Rosenberg, E.I. ; Thomas, W.D. ; Wayne, M.R. ; Boldini, M. ; Cavallo, F. ; Giordano, V. ; Maselli, L. ; Navarria, F.L. ; Perrotta,

Author_Institution

Ames Lab., Iowa State Univ., Ames, IA, USA

Volume

42

Issue

4

fYear

1995

fDate

8/1/1995 12:00:00 AM

Firstpage

491

Lastpage

498

Abstract

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 (~2×20 mrad² in θ×φ with nine samplings along the shower axes), using a limited number of readout channels (18432). 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 ^83mKr decays, and to the treatment of ageing in the readout proportional counters

Keywords

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; Aging; Calibration; Counting circuits; Detectors; Jacobian matrices; Laboratories; Particle tracking; Physics; Sampling methods; Solids;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.467923

Filename

467923