4 /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. */
9 const Float_t kThetaOpen2 = 0.83*kDegrad;
11 const Float_t kThetaOpen3 = 0.83*kDegrad;
12 // angle of beam tube in second cone
13 const Float_t kThetaOpenB = 0.83*kDegrad;
14 // const Float_t thetaOpenB = 0.84*kDegrad;
15 // inner lead Cone opening angle
16 // const Float_t kThetaOpenPb = 0.6*kDegrad;
17 // Outer Pb Cone opening angle
18 const Float_t kThetaOpenPbO = 1.6*kDegrad;
20 const Float_t kZPb = 810.;
21 // y-position of trigger wall
22 const Float_t kZFilterIn = 1471.;
23 const Float_t kZFilterOut = kZFilterIn+120.;
24 // end of 2-degree outer cone
25 // const Float_t zConeE = 30./TMath::Tan(accMin);
26 const Float_t kZConeE = 859.;
30 const Float_t kDInsuS=1.5;
31 const Float_t kDEnveS=0.1;
32 const Float_t kDProtS=0.1;
33 const Float_t kDFreeS=0.00;
35 Float_t dVacuS=dTubeS+kDInsuS+kDEnveS+kDProtS+kDFreeS;
38 // Radii and z-positions imposed by vacuum chamber layout
41 // delta_R for bellows
42 // const Float_t dr11=2.65;
43 const Float_t kDr11=4.1;
45 const Float_t kDr12=0.01;
46 // delta_R to catch up with cone
47 const Float_t kDr13=2.0;
50 const Float_t kDF1=2.*3.9;
53 const Float_t kRB1=5.5;
54 const Float_t kHB1=2.25;
55 const Float_t kLB1=0.77;
56 const Float_t kEB1=0.04;
59 const Float_t kDB1=12.*kLB1/2.;
61 const Float_t kZvac2=507.;
62 const Float_t kZvac1=kZvac2-kDB1-kDr11/2.-kDr12;
63 const Float_t kZvac3=kZvac2+kDB1+kDF1+kDr13+6.;
64 const Float_t kZvac4=558.;
65 // Outer shield dimensions
66 const Float_t kR11=15.45;
68 const Float_t kDRSteel2=4.;
69 // According to design
70 // const Float_t R21=20.3;
71 // to avoid overlap with 2deg line
72 const Float_t kR21=19.4;
76 // const Float_t kZvac5=kZvac4+4.;
80 const Float_t kZvac6=711.;
81 const Float_t kZvac8=1274.;
82 //const Float_t kDr21=2.263;
83 const Float_t kDr21=.5;
84 const Float_t kDr22=1.3;
85 const Float_t kDr23=2.263;
86 const Float_t kDB2=24.118;
87 const Float_t kDF2=10.6;
88 const Float_t kZvac7=kZvac8-kDF2/2-kDB2-kDr22-kDr21;
89 const Float_t kZvac9=kZvac8+kDF2/2+kDB2+kDr22+kDr23;
93 const Float_t kZvac10=1466.;
94 const Float_t kZvac11=1800.;
95 const Float_t kZvac12=1900.;
97 const Float_t kR41=35.;
98 const Float_t kR42=49.9;
99 const Float_t kR43=110.;
109 const Float_t kRF1=8.4;
110 const Float_t kDFlange=0.1;
115 const Float_t kRB2=16.35;
116 const Float_t kHB2=2.25;
117 const Float_t kLB2=2.32;
118 const Float_t kEB2=0.05;
122 const Float_t kRF2=18.5;
127 //const Float_t kZch1 = 530.0 ;
128 //const Float_t kZch2 = 672.5 ;
130 const Float_t kZch11 = 526.2 ;
131 const Float_t kZch12 = 553.8 ;
132 const Float_t kZch21 = 670.25;
133 const Float_t kZch22 = 701.75;
134 const Float_t kZch31 = 946. ;
135 const Float_t kZch32 = 1046. ;
136 const Float_t kZch41 = 1238.16;
137 const Float_t kZch42 = 1296.16;
138 const Float_t kZch51 = 1399.0 ;
139 const Float_t kZch52 = 1457.0 ;