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1 | #ifndef ABSOCONST_H |
| 2 | #define ABSOCONST_H |
| 3 | |
| 4 | /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. */ |
| 5 | |
| 6 | /* $Id$ */ |
| 7 | |
| 8 | // start of 2deg cone |
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9 | // const Float_t zTwoDeg = 125.9995; |
| 10 | // const Float_t zTwoDeg = 131.7267; |
| 11 | // const Float_t zTwoDeg = 117.4086; |
| 12 | const Float_t zTwoDeg = 128.863; |
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13 | // start of the absorber |
| 14 | const Float_t zAbsStart = 90.; |
| 15 | // end of the W-nose |
| 16 | const Float_t zNose = 102.; |
| 17 | // end of the 5deg line below the TPC field cage |
| 18 | const Float_t zConeTPC = 285.; |
| 19 | // start of concrete absorber |
| 20 | const Float_t zAbsCc = 315.; |
| 21 | |
| 22 | // max acceptance angle |
| 23 | const Float_t accMax = 10.*kDegrad; |
| 24 | // angle of nose |
| 25 | const Float_t theta1 = 24.*kDegrad; |
| 26 | // angle of second outer cone below field cage |
| 27 | const Float_t theta2 = 5. *kDegrad; |
| 28 | // outer angler of W rear shield |
| 29 | const Float_t thetaR = 3. *kDegrad; |
| 30 | // |
| 31 | // thicknesses defining the absorber |
| 32 | // ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ |
| 33 | // steel envelope |
| 34 | const Float_t dSteel = 1.; |
| 35 | // poly-ethylene layer |
| 36 | const Float_t dPoly = 5.0; |
| 37 | |
| 38 | |
| 39 | |
| 40 | |
| 41 | #endif |
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42 | |
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