Position zch1 corrected (529 cm)
[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
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//
121const Float_t dzch=10.;
a8ad837f 122const Float_t zch1=528.0;
0a3b2349 123const Float_t zch2=690.;
124
125#endif