Position of bellow.
[u/mrichter/AliRoot.git] / STRUCT / SHILConst.h
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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
77976fd8 9 const Float_t thetaOpen2 = 0.83*kDegrad;
0a3b2349 10// angle of 3rd cone
77976fd8 11 const Float_t thetaOpen3 = 0.83*kDegrad;
0a3b2349 12// angle of beam tube in second cone
77976fd8 13 const Float_t thetaOpenB = 0.83*kDegrad;
a0cb6c86 14// const Float_t thetaOpenB = 0.84*kDegrad;
0a3b2349 15// inner lead Cone opening angle
77976fd8 16 const Float_t thetaOpenPb = 0.6*kDegrad;
0a3b2349 17// Outer Pb Cone opening angle
18 const Float_t thetaOpenPbO = 1.6*kDegrad;
19// Start of lead cone
77976fd8 20 const Float_t zPb = 810.;
0a3b2349 21// y-position of trigger wall
22 const Float_t zFilterIn = 1471.;
23 const Float_t zFilterOut = zFilterIn+120.;
24// end of 2-degree outer cone
2f36dac3 25// const Float_t zConeE = 30./TMath::Tan(accMin);
26 const Float_t zConeE = 859.;
0a3b2349 27//
28//
77976fd8 29 Float_t dTubeS = 0.1;
30 const Float_t dInsuS=1.5;
0a3b2349 31 const Float_t dEnveS=0.1;
77976fd8 32 const Float_t dProtS=0.1;
33 const Float_t dFreeS=0.00;
0a3b2349 34
35 Float_t dVacuS=dTubeS+dInsuS+dEnveS+dProtS+dFreeS;
36
37//
38// Radii and z-positions imposed by vacuum chamber layout
39//
40// FIRST SECTION
41// delta_R for bellows
77976fd8 42// const Float_t dr11=2.65;
43 const Float_t dr11=4.1;
0a3b2349 44// delta_R for flange
77976fd8 45 const Float_t dr12=0.01;
0a3b2349 46// delta_R to catch up with cone
77976fd8 47 const Float_t dr13=2.0;
2f36dac3 48
0a3b2349 49// flange length
50 const Float_t dF1=2.*3.9;
51// bellow length
7520e6df 52//
53 const Float_t rB1=5.5;
54 const Float_t hB1=2.25;
55 const Float_t lB1=0.77;
56 const Float_t eB1=0.04;
57//
58
59 const Float_t dB1=12.*lB1/2.;
0a3b2349 60// Flange position
7520e6df 61 const Float_t zvac2=507.;
62 const Float_t zvac1=zvac2-dB1-dr11/2.-dr12;
63 const Float_t zvac3=zvac2+dB1+dF1+dr13+6.;
0a3b2349 64 const Float_t zvac4=558.;
65// Outer shield dimensions
66 const Float_t R11=15.45;
67// Steel Envelope
68 const Float_t dRSteel1=2.;
69 const Float_t dRSteel2=4.;
70// According to design
71// const Float_t R21=20.3;
72// to avoid overlap with 2deg line
73 const Float_t R21=19.4;
74//
75// 2nd Section
76//
77 const Float_t zvac5=zvac4+4.;
78//
79// 3rd Section
80//
81 const Float_t zvac6=711.;
82 const Float_t zvac8=1274.;
a0cb6c86 83//const Float_t dr21=2.263;
84 const Float_t dr21=.5;
0a3b2349 85 const Float_t dr22=1.3;
86 const Float_t dr23=2.263;
87 const Float_t dB2=24.118;
88 const Float_t dF2=10.6;
89 const Float_t zvac7=zvac8-dF2/2-dB2-dr22-dr21;
90 const Float_t zvac9=zvac8+dF2/2+dB2+dr22+dr23;
91//
92// 4th Section
93//
94 const Float_t zvac10=1466.;
95 const Float_t zvac11=1800.;
96 const Float_t zvac12=1900.;
97
98 const Float_t R41=35.;
77976fd8 99 const Float_t R42=49.9;
0a3b2349 100 const Float_t R43=110.;
101
102//
103// Vacuum System
104//
105
7520e6df 106
0a3b2349 107//
108// Flange1
109//
a0cb6c86 110 const Float_t rF1=8.4;
0a3b2349 111 const Float_t dFlange=0.1;
112
113//
114// Bellow2
115//
77976fd8 116 const Float_t rB2=16.35;
0a3b2349 117 const Float_t hB2=2.25;
118 const Float_t lB2=2.32;
119 const Float_t eB2=0.05;
120//
121// Flange2
122//
a0cb6c86 123 const Float_t rF2=18.5;
0a3b2349 124
125//
126// Chamber positions
127//
39311070 128const Float_t zch1 = 530.0 ;
129const Float_t zch2 = 672.5 ;
130
a0cb6c86 131const Float_t zch11 = 526.2 ;
132const Float_t zch12 = 553.8 ;
133const Float_t zch21 = 670.25;
134const Float_t zch22 = 701.75;
39311070 135const Float_t zch31 = 946. ;
136const Float_t zch32 = 1046. ;
137const Float_t zch41 = 1238.16;
138const Float_t zch42 = 1296.16;
139const Float_t zch51 = 1399.0 ;
140const Float_t zch52 = 1457.0 ;
0a3b2349 141#endif
39311070 142