2. "Jul01 Baseline" (1) The gap is now officially increased by 4 cm. All previous gap studies had been done by moving only the front face of the endcap back and leaving the back end where it was (thinning the calorimeter). So it took some editing to propagate the 4 cm offset to the front of the JF shield. (2) The inner bore of the JD is copper, and is tapered along the same eta line as the rest of the forward shielding (not cylindrical). (3) The ion pump in front of the FCal is now the stainless steel model suggested by Ian. (4) The borated poly in the JT tapers from a thickness of 7 cm at the front to 4 cm at the back. This is in hopes that we could optimize the CSC region for neutrons and photons, and the middle MDT's for high energy hadrons in the same solution. Although modeled as a taper for convenience, this could no doubt be stepped-cylindrical and give the same results if it turns out to be a good solution. 9. "Steel Monoblock" TAS monoblock shield changed from cast iron to steel. Small Wheel Large Wheel Back Wheel Barrel A B C D E F G CSC TGC MDT-in MDT-out MDT-back RPC-in RPC-out Jul01 Baseline N < 100 keV 37500.0 27000.0 6980.0 5680.0 2096.0 3369.0 3608.0 Steel Monoblock N < 100 keV 36300.0 26200.0 6930.0 5680.0 2194.0 3275.0 3582.0 Change in % -3.2 -3.0 -0.7 0.0 4.7 -2.8 -0.7 Jul01 Baseline N > 100 keV 30200.0 11100.0 1870.0 1220.0 614.0 781.0 752.0 Steel Monoblock N > 100 keV 29400.0 10900.0 1780.0 1210.0 616.0 755.0 738.0 Change in % -2.6 -1.8 -4.8 -0.8 0.3 -3.3 -1.9 Jul01 Baseline Photons 27800.0 11600.0 11900.0 4870.0 1310.0 1520.0 1590.0 Steel Monoblock Photons 27100.0 11200.0 11700.0 4780.0 1300.0 1530.0 1540.0 Change in % -2.5 -3.4 -1.7 -1.8 -0.8 0.7 -3.1 Jul01 Baseline Electrons 208.0 109.0 22.1 20.9 7.4 17.7 12.1 Steel Monoblock Electrons 181.0 93.4 29.4 22.3 6.6 14.4 12.8 Change in % -13.0 -14.3 33.0 6.7 -11.5 -18.6 5.8 Jul01 Baseline Muons 124.0 21.8 9.7 3.2 1.5 1.0 0.5 Steel Monoblock Muons 120.0 21.9 10.5 3.0 1.7 1.0 0.6 Change in % -3.2 0.5 8.7 -5.3 15.4 1.0 15.2 Jul01 Baseline Protons 73.8 20.1 9.0 9.3 0.8 3.3 1.8 Steel Monoblock Protons 74.9 19.3 10.3 9.1 0.5 3.4 1.7 Change in % 1.5 -4.0 14.1 -1.8 -29.7 2.7 -5.5 Jul01 Baseline Hadrons 7520.0 1610.0 420.0 406.0 30.1 155.0 175.0 Steel Monoblock Hadrons 7470.0 1590.0 414.0 402.0 29.9 153.0 172.0 Change in % -0.7 -1.2 -1.4 -1.0 -0.7 -1.3 -1.7 Jul01 Baseline MDT rate 487.6 190.1 156.0 69.4 18.7 24.3 23.5 Steel Monoblock MDT rate 473.6 182.5 155.6 68.4 18.6 24.0 22.9 Change in % -2.9 -4.0 -0.3 -1.5 -0.9 -1.3 -2.2 Jul01 Baseline RPC rate 282.6 100.7 76.3 35.5 9.3 12.9 11.5 Steel Monoblock RPC rate 273.9 96.0 77.2 35.0 9.1 12.6 11.3 Change in % -3.1 -4.6 1.2 -1.3 -1.6 -2.6 -1.6 Jul01 Baseline Penetrating 161.0 48.9 26.3 14.7 3.6 6.2 4.5 Steel Monoblock Penetrating 155.4 46.0 28.0 14.6 3.5 5.8 4.6 Change in % -3.5 -6.0 6.6 -0.7 -3.2 -5.8 0.5