53. "Dec Baseline" JD: No W. Cladding 5cm poly + 3cm Pb with brass increased by 2cm. JT: No change. 8cm poly on the back nothing on the front. JF: Front: 5cm poly + 3cm Fe and radius = 155 cm Back: No change i.e. 8cm poly + 3cm Fe. JN: Washers the same radius. 54. "Dec JM1 JD7thW" The first 7th of the JD is made of tungsten" 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 Dec Baseline N < 100 keV 51200.0 31300.0 2449.0 3810.0 1992.0 3832.0 4083.0 Dec JM1 JD7thW N < 100 keV 49100.0 30700.0 2386.0 3699.0 2014.0 3709.0 4009.0 Change in % -4.1 -1.9 -2.6 -2.9 1.1 -3.2 -1.8 Dec Baseline N > 100 keV 33300.0 11500.0 951.0 820.0 578.0 758.0 717.0 Dec JM1 JD7thW N > 100 keV 30200.0 10600.0 984.0 831.0 626.0 721.0 691.0 Change in % -9.3 -7.8 3.5 1.3 8.3 -4.9 -3.6 Dec Baseline Photons 22800.0 10300.0 11700.0 4630.0 1310.0 1530.0 1610.0 Dec JM1 JD7thW Photons 22100.0 9830.0 11800.0 4700.0 1350.0 1490.0 1610.0 Change in % -3.1 -4.6 0.9 1.5 3.1 -2.6 0.0 Dec Baseline Electrons 161.0 107.0 23.6 20.9 10.3 22.7 14.3 Dec JM1 JD7thW Electrons 204.0 94.2 25.0 23.4 9.3 12.1 14.1 Change in % 26.7 -12.0 5.9 12.0 -9.8 -46.7 -1.4 Dec Baseline Muons 123.0 20.8 8.5 3.2 2.2 1.0 0.5 Dec JM1 JD7thW Muons 121.0 21.9 9.2 3.2 2.3 0.9 0.5 Change in % -1.6 5.3 7.8 0.9 0.9 -13.3 11.8 Dec Baseline Protons 59.0 16.7 9.9 9.4 0.5 2.6 1.6 Dec JM1 JD7thW Protons 49.0 15.4 11.2 8.9 0.6 3.0 1.5 Change in % -16.9 -7.8 13.0 -5.6 24.1 15.4 -2.6 Dec Baseline Hadrons 6820.0 1440.0 411.0 334.0 36.0 142.0 160.0 Dec JM1 JD7thW Hadrons 6120.0 1330.0 422.0 336.0 36.2 136.0 155.0 Change in % -10.3 -7.6 2.7 0.6 0.6 -4.2 -3.1 Dec Baseline MDT rate 423.1 174.6 150.8 65.5 19.3 24.9 24.1 Dec JM1 JD7thW MDT rate 411.5 166.7 153.2 66.3 19.7 23.1 24.0 Change in % -2.7 -4.5 1.6 1.2 2.3 -7.1 -0.3 Dec Baseline RPC rate 243.4 91.6 74.6 34.0 9.9 13.2 11.8 Dec JM1 JD7thW RPC rate 238.4 87.3 76.3 34.4 10.0 11.8 11.8 Change in % -2.1 -4.7 2.4 1.2 1.6 -10.8 -0.2 Dec Baseline Penetrating 140.8 44.8 25.9 14.4 4.2 6.4 4.7 Dec JM1 JD7thW Penetrating 139.2 42.5 27.3 14.5 4.2 5.2 4.7 Change in % -1.1 -5.0 5.3 0.8 -0.2 -19.4 -0.4 1 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. 8. "JD Cu to W" The core of the JD is tungsten instead of Cu. 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 JD Cu to W N < 100 keV 32100.0 24190.0 6640.0 5220.0 1930.0 3029.0 3189.0 Change in % -14.4 -10.4 -4.9 -8.1 -7.9 -10.1 -11.6 Jul01 Baseline N > 100 keV 30200.0 11100.0 1870.0 1220.0 614.0 781.0 752.0 JD Cu to W N > 100 keV 21200.0 8110.0 1700.0 1150.0 570.0 621.0 641.0 Change in % -29.8 -26.9 -9.1 -5.7 -7.2 -20.5 -14.8 Jul01 Baseline Photons 27800.0 11600.0 11900.0 4870.0 1310.0 1520.0 1590.0 JD Cu to W Photons 21900.0 9280.0 11600.0 4650.0 1240.0 1310.0 1380.0 Change in % -21.2 -20.0 -2.5 -4.5 -5.3 -13.8 -13.2 Jul01 Baseline Electrons 208.0 109.0 22.1 20.9 7.4 17.7 12.1 JD Cu to W Electrons 132.0 91.7 26.0 20.9 5.7 5.8 11.6 Change in % -36.5 -15.9 17.6 0.0 -23.3 -67.1 -4.1 Jul01 Baseline Muons 124.0 21.8 9.7 3.2 1.5 1.0 0.5 JD Cu to W Muons 126.0 20.4 11.7 3.3 1.6 0.8 0.5 Change in % 1.6 -6.4 21.1 3.4 4.0 -24.4 5.9 Jul01 Baseline Protons 73.8 20.1 9.0 9.3 0.8 3.3 1.8 JD Cu to W Protons 54.9 15.3 9.7 9.5 0.5 2.5 1.5 Change in % -25.6 -23.9 7.1 3.1 -38.6 -24.7 -18.7 Jul01 Baseline Hadrons 7520.0 1610.0 420.0 406.0 30.1 155.0 175.0 JD Cu to W Hadrons 5240.0 1080.0 409.0 381.0 27.2 119.0 149.0 Change in % -30.3 -32.9 -2.6 -6.2 -9.6 -23.2 -14.9 Jul01 Baseline MDT rate 487.6 190.1 156.0 69.4 18.7 24.3 23.5 JD Cu to W MDT rate 392.8 154.6 153.9 66.8 17.5 19.5 20.5 Change in % -19.4 -18.7 -1.4 -3.8 -6.7 -19.5 -12.5 Jul01 Baseline RPC rate 282.6 100.7 76.3 35.5 9.3 12.9 11.5 JD Cu to W RPC rate 231.3 82.3 76.3 34.5 8.5 9.7 10.2 Change in % -18.2 -18.3 0.0 -2.9 -7.8 -24.8 -12.0 Jul01 Baseline Penetrating 161.0 48.9 26.3 14.7 3.6 6.2 4.5 JD Cu to W Penetrating 135.5 40.7 27.6 14.6 3.2 3.9 4.1 Change in % -15.8 -16.8 4.9 -0.4 -11.6 -36.8 -10.2