Author :
Glass, H. ; Adams, M. ; Coutrakon, G. ; Finley, D. ; Jaffe, D. ; Kirz, J. ; McCarthy, R. ; Hubbard, J.R. ; Mangeot, Ph. ; Peisert, A. ; Charpak, G. ; Santiard, J.C. ; Sauli, F. ; Brown, C. ; Jonckheere, A. ; Jostlein, H.
Abstract :
We have constructed and operated a large aperture ring-imaging Cerenkov counter in a high transverse-momentum experiment at Fermilab. We used multistep proportional chambers with a He/TEA photosensitive gas mixture to observe approximately 3.5 photons per relativistic particle. Hadron identification is obtained with good efficiency from threshold to 250 GeV/c.
