Author :
Feller, J.M. ; Barbaro-Galtieri, A. ; Dorfan, J.M. ; Ely, R. ; Feldman, G.J. ; Fong, A. ; Gobbi, B. ; Hanson, G. ; Heile, F.B. ; Jaros, J.A. ; Kwan, B.P. ; Leconte, P. ; Litke, A.M. ; Luke, D. ; Madaras, R.J. ; Martin, J.F. ; Mast, T.S. ; Miller, D.H. ; P
Abstract :
A "Lead-Glass Wall," consisting of 318 lead-glass Cherenkov shower counters and three wire spark chambers, has been added to one octant of the SPEAR Mark I Magnetic Detector. The wall covers a solid angle of approximately 6% of 4¿ steradians and has been used to identify and measure the energies of electrons and photons produced in electron-positron collisions. The design, calibration, gain-monitoring, and performance of the system are described.
