Setting Z positions of the tracking chamber to values given in Alain TOURNAIRE note...
[u/mrichter/AliRoot.git] / MUON / AliMUONConstants.cxx
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f665c1ea 1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
3 * *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
6 * *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
15
88cb7938 16/* $Id$ */
f665c1ea 17
29fc2c86 18#include <TMath.h>
f665c1ea 19#include "AliMUONConstants.h"
20
f665c1ea 21ClassImp(AliMUONConstants)
22
37c0cd40 23Int_t AliMUONConstants::fgNCh = 14;
f665c1ea 24Int_t AliMUONConstants::fgNTrackingCh = 10;
25Int_t AliMUONConstants::fgNTriggerCh = 4;
26Int_t AliMUONConstants::fgNTriggerCircuit = 234;
edb96c6a 27Int_t AliMUONConstants::fgNDetElem = 228;
24c9eaa0 28
89b0b88d 29
30
e516b01d 31Float_t AliMUONConstants::fgDefaultChamberZ[14] =
89b0b88d 32 {-526.16, -545.24, -676.4, -695.4, // St12
33 -967.5, -998.5, -1276.5, -1307.5, -1406.6, -1437.6,// updated 08/05, EDMS id 335328 (A. Tournaire)
e516b01d 34 -1603.5, -1620.5, -1703.5, -1720.5}; // M1 & M2
35
36Float_t AliMUONConstants::fgDzCh = 15.5/2.;
37Float_t AliMUONConstants::fgDzSlat = 8.5/2.;
38
1c334adf 39Float_t AliMUONConstants::fgSqrtKx3 = 0.7131;
40Float_t AliMUONConstants::fgSqrtKy3 = 0.7642;
7e4a628d 41
1c334adf 42Float_t AliMUONConstants::fgSqrtKx3St1 = 0.7000;
43Float_t AliMUONConstants::fgSqrtKy3St1 = 0.7550;
7e4a628d 44
1c334adf 45Float_t AliMUONConstants::fgChargeCorrel = 0.11;
f4a7360f 46Float_t AliMUONConstants::fgChargeCorrelSt1 = 1.0; //???
1c334adf 47Float_t AliMUONConstants::fgPitch = 0.25;
48Float_t AliMUONConstants::fgPitchSt1 = 0.21;
c47b11f0 49
f4a7360f 50// From Alain TOURNAIRE
51// ALICE / ALICE Engineering baseline / Dimuonspectrometer (DIS) v7-1
52// EDMS Id 335328 for "search in EDMS
53// These are the diameter (innner and ounner) values of the active surface
eb571c25 54Float_t AliMUONConstants::fgDmin[7] = { 36.4, 46.2, 63.0, 79.0, 79.0, 99.0, 100.0};
f4a7360f 55Float_t AliMUONConstants::fgDmax[7] = { 176.6, 229.0, 308.84, 418.2, 522.0, 1224.0, 1300.0};
56
e118b27e 57Int_t AliMUONConstants::fgMaxZoom = 20;
ecfa008b 58
24c9eaa0 59//______________________________________________________________________________
29fc2c86 60Int_t AliMUONConstants::ChamberNumber(Float_t z)
61{
62 // return chamber number according z position of hit. Should be taken from geometry ?
63
64 Float_t dMaxChamber = DzSlat() + DzCh() + 0.25; // cm st 3 &4 & 5
65 if ( z > (DefaultChamberZ(4)+50.)) dMaxChamber = 7.; // cm stations 1 & 2
66 Int_t iChamber;
67
68 for (iChamber = 0; iChamber < 10; iChamber++) {
69
70 if (TMath::Abs(z-DefaultChamberZ(iChamber)) < dMaxChamber) {
71 return iChamber;
72 }
73 }
74 return -1;
75}