1. May 12, 2004 TJR1 Effects of Downstream Iron Shield Position on MICE Good- Mu+ Rates Tom Roberts Illinois Institute of Technology May 12, 2004

2. May 12, 2004 TJR2 Good μ+ = TOF0 & TOF1(μ+) & Tracker1 & Tracker2 & TOF2(μ+) No Iron has TOF2 at the same place as the Original Iron.

3. May 12, 2004 TJR3 Good μ+ = TOF0 & TOF1(μ+) & Tracker1 & Tracker2 & TOF2(μ+)

4. May 12, 2004 TJR4 Bmod along midplane of TOF2, Original Iron Shield Position μ = 1000 (guess)

5. May 12, 2004 TJR5 Bmod along midplane of TOF2, New Iron Shield Position μ = 1000 (guess)

6. May 12, 2004 TJR6 Conditions of this Study The following are configured as in the TRD (March 28): –The beamline (MAR04 design) –Upstream PiD counters –Downstream PiD counters and iron shield (except as noted) These have older configurations: –Magnetic cooling channel, absorbers, and RF are as in the MICE proposal –No vacuum windows; experimental hall is filled with vacuum –Tracker1 and Tracker2 are modeled as virtualdetector-s, vacuum –Absorbers have the bellows windows, both LH 2 and safety Absorbers are empty, RF is off