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The mid-rapidity calorimeter for the relativistic heavy-ion experiment WA80 at CERN

1989; Elsevier BV; Volume: 279; Issue: 3 Linguagem: Inglês

10.1016/0168-9002(89)91295-3

1872-9576

T. C. Awes, C. Baktash, R.P. Cumby, R.L. Ferguson, A. Franz, T.A. Gabriel, H.-Å. Gustafsson, H.H. Gutbrod, James W. Johnson, B. W. Kolb, I.Y. Lee, F.E. Obenshain, A. Oskarsson, I. Otterlund, S. Persson, F. Plasil, A. M. Poskanzer, H. G. Ritter, H. R. Schmidt, S. P. Sørensen, G. R. Young,

Radioactivity and Radon Measurements

A sampling calorimeter designed for use at mid-rapidity in the relativistic heavy-ion experiment WA80 at CERN is described. Calibration and performance results are presented. Over the energy range of 2 to 50 GeV, the response of the mid-rapidity calorimeter was linear, and its energy resolution σE was found to be given by 0.014 + 0.11√E and 0.034+0.34√E for electromagnetic and hadronic showers, respectively. Signal ratios of 1.2 and 1.4 were obtained for the eh ratio of the lead-scintillator electromagnetic section and the iron-scintillator hadronic section, respectively. The calorimeter provided an accurate transverse energy trigger. The response and resolution for high-energy heavy ions were slightly better than anticipated on the basis of the low-energy calibrations.