Fixes for coding violations
[u/mrichter/AliRoot.git] / TPC / AliTPCSpaceCharge.h
CommitLineData
c9cbd2f2 1#ifndef ALITPCSPACECHARGE_H
2#define ALITPCSPACECHARGE_H
3
4/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
5 * See cxx source for full Copyright notice */
6
7////////////////////////////////////////////////////////////////////////////
c9cbd2f2 8// AliTPCSpaceCharge class //
c9cbd2f2 9// Authors: Jim Thomas, Stefan Rossegger //
10////////////////////////////////////////////////////////////////////////////
11
12#include "AliTPCCorrection.h"
13
14
15class AliTPCSpaceCharge : public AliTPCCorrection {
16public:
17 AliTPCSpaceCharge();
18 virtual ~AliTPCSpaceCharge();
19
20 // initialization and update functions
21 virtual void Init();
22 virtual void Update(const TTimeStamp &timeStamp);
23
24
25 // common setters and getters for tangled ExB effect
26 virtual void SetOmegaTauT1T2(Float_t omegaTau,Float_t t1,Float_t t2) {
27 fT1=t1; fT2=t2;
28 const Double_t wt0=t2*omegaTau; fC0=1./(1.+wt0*wt0);
29 const Double_t wt1=t1*omegaTau; fC1=wt1/(1.+wt1*wt1);
30 };
31 void SetC0C1(Float_t c0,Float_t c1) {fC0=c0;fC1=c1;} // CAUTION: USE WITH CARE
32 Float_t GetC0() const {return fC0;}
33 Float_t GetC1() const {return fC1;}
34
35 // setters and getters for conical
36 void SetCorrectionFactor(Float_t correctionFactor) {fCorrectionFactor=correctionFactor;}
37 Float_t GetCorrectionFactor() const {return fCorrectionFactor;}
38
39 void InitSpaceChargeDistortion();
40
41 virtual void Print(const Option_t* option="") const;
42
43protected:
44 virtual void GetCorrection(const Float_t x[],const Short_t roc,Float_t dx[]);
45
46private:
47 Float_t fC0; // coefficient C0 (compare Jim Thomas's notes for definitions)
48 Float_t fC1; // coefficient C1 (compare Jim Thomas's notes for definitions)
49 Float_t fCorrectionFactor; // Space Charge Correction factor in comparison to initialized
50 // look up table which was created for M_mb = 900 and IR = 3000
51 // compare Internal Note Nr: ???
52
53 Bool_t fInitLookUp; // flag to check it the Look Up table was created
54
55 Double_t fLookUpErOverEz[kNZ][kNR]; // Array to store electric field integral (int Er/Ez)
56 Double_t fLookUpDeltaEz[kNZ][kNR]; // Array to store electric field integral (int Delta Ez)
57
58 // basic numbers for the poisson relaxation //can be set individually in each class
59 enum {kRows =257}; // grid size in r direction used in the poisson relaxation // ( 2**n + 1 ) eg. 65, 129, 257 etc.
60 enum {kColumns=129}; // grid size in z direction used in the poisson relaxation // ( 2**m + 1 ) eg. 65, 129, 257 etc.
61 enum {kIterations=100}; // Number of iterations within the poisson relaxation
62
63 ClassDef(AliTPCSpaceCharge,0);
64};
65
66#endif