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0a3b2349 | 1 | #ifndef SHILCONST_H |
2 | #define SHILCONST_H | |
3 | ||
4 | /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. */ | |
5 | ||
6 | /* $Id$ */ | |
7 | ||
8 | // angle of 2nd cone | |
9 | const Float_t thetaOpen2 = 0.8*kDegrad; | |
10 | // angle of 3rd cone | |
11 | const Float_t thetaOpen3 = 0.9*kDegrad; | |
12 | // angle of beam tube in second cone | |
13 | const Float_t thetaOpenB = 0.74*kDegrad; | |
14 | // inner lead Cone opening angle | |
15 | const Float_t thetaOpenPb = 0.6*kDegrad; | |
16 | // Outer Pb Cone opening angle | |
17 | const Float_t thetaOpenPbO = 1.6*kDegrad; | |
18 | // Start of lead cone | |
19 | const Float_t zPb = 810.; | |
20 | // y-position of trigger wall | |
21 | const Float_t zFilterIn = 1471.; | |
22 | const Float_t zFilterOut = zFilterIn+120.; | |
23 | // end of 2-degree outer cone | |
24 | const Float_t zConeE = 30./TMath::Tan(accMin); | |
25 | // | |
26 | // | |
27 | Float_t dTubeS=0.1; | |
28 | const Float_t dInsuS=0.9; | |
29 | const Float_t dEnveS=0.1; | |
30 | const Float_t dProtS=0.2; | |
31 | const Float_t dFreeS=0.5; | |
32 | ||
33 | Float_t dVacuS=dTubeS+dInsuS+dEnveS+dProtS+dFreeS; | |
34 | ||
35 | // | |
36 | // Radii and z-positions imposed by vacuum chamber layout | |
37 | // | |
38 | // FIRST SECTION | |
39 | // delta_R for bellows | |
40 | const Float_t dr11=1.8; | |
41 | // delta_R for flange | |
42 | const Float_t dr12=0.875; | |
43 | // delta_R to catch up with cone | |
44 | const Float_t dr13=0.525; | |
45 | // flange length | |
46 | const Float_t dF1=2.*3.9; | |
47 | // bellow length | |
48 | const Float_t dB1=18.482-dF1/2-dr11; | |
49 | // Flange position | |
50 | const Float_t zvac2=518.; | |
51 | const Float_t zvac1=zvac2-dF1/2-dB1-dr11-dr12; | |
52 | const Float_t zvac3=zvac2+dF1/2+dB1+dr12+dr13; | |
53 | const Float_t zvac4=558.; | |
54 | // Outer shield dimensions | |
55 | const Float_t R11=15.45; | |
56 | // Steel Envelope | |
57 | const Float_t dRSteel1=2.; | |
58 | const Float_t dRSteel2=4.; | |
59 | // According to design | |
60 | // const Float_t R21=20.3; | |
61 | // to avoid overlap with 2deg line | |
62 | const Float_t R21=19.4; | |
63 | // | |
64 | // 2nd Section | |
65 | // | |
66 | const Float_t zvac5=zvac4+4.; | |
67 | // | |
68 | // 3rd Section | |
69 | // | |
70 | const Float_t zvac6=711.; | |
71 | const Float_t zvac8=1274.; | |
72 | const Float_t dr21=2.263; | |
73 | const Float_t dr22=1.3; | |
74 | const Float_t dr23=2.263; | |
75 | const Float_t dB2=24.118; | |
76 | const Float_t dF2=10.6; | |
77 | const Float_t zvac7=zvac8-dF2/2-dB2-dr22-dr21; | |
78 | const Float_t zvac9=zvac8+dF2/2+dB2+dr22+dr23; | |
79 | // | |
80 | // 4th Section | |
81 | // | |
82 | const Float_t zvac10=1466.; | |
83 | const Float_t zvac11=1800.; | |
84 | const Float_t zvac12=1900.; | |
85 | ||
86 | const Float_t R41=35.; | |
87 | const Float_t R42=50.; | |
88 | const Float_t R43=110.; | |
89 | ||
90 | // | |
91 | // Vacuum System | |
92 | // | |
93 | ||
94 | // Bellow1 | |
95 | // | |
96 | const Float_t rB1=5.5; | |
97 | const Float_t hB1=2.25; | |
98 | const Float_t lB1=0.77; | |
99 | const Float_t eB1=0.04; | |
100 | // | |
101 | // Flange1 | |
102 | // | |
103 | const Float_t rF1=8.5; | |
104 | const Float_t dFlange=0.1; | |
105 | ||
106 | // | |
107 | // Bellow2 | |
108 | // | |
109 | const Float_t rB2=15.35; | |
110 | const Float_t hB2=2.25; | |
111 | const Float_t lB2=2.32; | |
112 | const Float_t eB2=0.05; | |
113 | // | |
114 | // Flange2 | |
115 | // | |
116 | const Float_t rF2=18.8; | |
117 | ||
118 | // | |
119 | // Chamber positions | |
120 | // | |
121 | const Float_t dzch=10.; | |
a8ad837f | 122 | const Float_t zch1=528.0; |
0a3b2349 | 123 | const Float_t zch2=690.; |
124 | ||
125 | #endif |