During Run II the Tevatron collider will operate with a 20-fold
decrease of bunch crossing time and a similar increase of luminosity with
respect to Run I: these new running conditions called for extensive
improvements and extensions of the CDF muon system. The low light yield of
aging scintillators has been effectively fixed by gluing light fibers to the
long sides of these counters for added light output. The higher backgrounds
of the Main Injector era will be suppressed by custom-shaped steel shielding
structures. A new muon system has been developed to extend rapidity
coverage up to |eta| = 1.5 with performances comparable to those of the
central muon system. New front-end electronics will handle the reduced gas
gain set in the central muon system. Several mechanical problems have been
solved to allow the completion of azimuthal coverage.
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Updated: Thursday, 2000 July 27 11:37:46 CDT automatically from input from Carol Picciolo