Author :
Wadsworth, B.F ; Barreiro, F. ; Goloskie, D.A. ; Kistiakowsky, V. ; McManus, J.B. ; Stoughton, T. ; Yamamoto, R.K. ; Shapiro, A. ; Koizumi, G. ; Albright, J. ; Burnstein, R. ; Alyea, E.D. ; Plano, R.J. ; Watts, T.L. ; Bugg, W. ; Dhawan, S. ; Ludlam, T.
Abstract :
The prototype of a charged particle identifier with 1m x 1m acceptance, has been tested at Fermilab using a pion-proton beam at 40 and 100 GeV/c. Its operation is based on the principle of ionization sampling, and the test results indicate that the prototype achieved the 14% FWHM resolution predicted for the distribution of average ionization for 64 samples taken in an 80% Ar -20% CO2 gas mixture. Dependence of the performance on various parameters is discussed.
