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29 March 2024
 
  » arxiv » physics/9801033

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A 10 MHz beam counter and a multiplicity detector for the E864 spectrometer
P. Haridas ; I.A. Pless ; G. Van Buren ; J. Tomasi ; M.S.Z. Rabin ; K. Barish ; R.D. Majka ;
Date 30 Dec 1997
Journal Nucl.Instrum.Meth. A385 (1997) 412-418
Subject Instrumentation and Detectors | physics.ins-det
AbstractThe E864 experiment at BNL requires a beam counter and multiplicity detector system that can perform at an incident beam rate of 10^7 Au ions per second. We have developed and tested a 150 micrometer thick quartz Cherenkov beam counter and a scintillator based multiplicity-trigger counter during the first run of this experiment in 1994. We obtained a time resolution of 78 ps for the beam counter at an incident beam rate 5 x 10^5 Hz and 100 ps at a rate of 1 x 10^7 Hz. Pulse height discrimination is used to obtain a minimum bias and a 10% centrality trigger from the multiplicity detectors. The multiplicity counter has a time resolution of 250 ps.
Source arXiv, physics/9801033
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