Hi,
below I pasted codes from BlastLib2/TBLEvTrack.h and BlastLib2/TBLEvent.h
that show what information is inluded in DST per physics event. I only
list the data members. for "getter" functions to extact these values,
please read those two files.
Chi
class TBLEvTrack : public TObject
{
// 6*4=24 byte for each track, plus possible addition from TObject
public:
Float_t fP; // momentum (GeV)
Float_t fTheta; // theta (rad)
Float_t fPhi; // phi (rad)
Float_t fZ0; // vertex - z0 (cm)
Float_t fChi2; // chi2 of this track
Int_t fPid; // particle ID
Char_t fGroup; // group ID, tracks from same hits have same group
...
}
class TBLEvMC : public TObject
{
public:
Float_t fP; // momentum (GeV)
Float_t fTheta; // theta (rad)
Float_t fPhi; // phi (rad)
Float_t fZ0; // vertex - z0 (cm)
...
}
class TBLEvTof : public TObject
{
// time in ns, length in cm, mass in GeV, energy who knows
// 2+4*5 = 22 bytes
public:
Short_t fPad; // Paddle number of the tof
Float_t fPathLength; // path length from scattering vertex to tof
Float_t fX; // X position of the hit, in TOF local frame
Float_t fPosition; // Y position of the hit
Float_t fTimeOfFlight;// Time of flight from scattering vertex to tof
Float_t fEnergy; // Energy deposit by the particle in the tof
Float_t fGEnergy; // Geometric average of ADC
Float_t fMass; // particle mass reconstructed from mometum and
// TOF info
Float_t fTheta, fPhi; // impact angle
Short_t ftdctop, ftdcbot, fadctop, fadcbot; // raw tdc/adc of each tube
}
class TBLEvNC : public TObject
{
// time in ns, length in cm, mass in GeV, energy who knows
// 2+20 = 22 bytes
public:
Short_t fPad; // Paddle number of the tof
Float_t fX; // position of the hit, in X-Z plane Blast Frame
Float_t fZ; // position of the hit, in X-Z plane
Float_t fPathLength; // path length from scattering vertex to tof
Float_t fPosition; // position of the hit, in the pad
Float_t fTimeOfFlight;// Time of flight from scattering vertex to tof
Float_t fEnergy; // Energy deposit by the particle in the tof
Float_t fGEnergy; // Geometric average of ADC
Float_t fTheta, fPhi; // track impact angle
Short_t ftdcl, ftdcr, fadcl, fadcr; // raw tdc/adc for each tube
}
class TBLEvCC : public TObject
{
// length in cm, mass in GeV, energy who knows
// 2+2*4 = 10 bytes
public:
Short_t fPad; // Paddle number of the tof
Float_t fX; // X position of the hit, in CC local frame
Float_t fY; // Y position of the hit, in CC local frame
Float_t fTimeOfFlight;// Time of flight from scattering vertex to tof
Float_t fEnergy; // Energy deposit by the particle in the tof
Short_t ftdc, fadc; // raw tdc adc
}
class TBLEvL15 : public TObject
{
// time in ns, length in cm, mass in GeV, energy who knows
// 2+4*5 = 22 bytes
public:
Short_t fPad; // Paddle number of the tof
Float_t fPathLength; // path length from scattering vertex to tof
Float_t fX; // X position of the hit
Float_t fPosition; // Y position of the hit
Float_t fTimeOfFlight;// Time of flight from scattering vertex to tof
Float_t fEnergy; // Energy deposit by the particle in the tof
Float_t fGEnergy; // Geometric average of ADC
Float_t fTheta, fPhi; // track impact angle
Short_t ftdctop, ftdcbot, fadctop, fadcbot; // raw adc tdc
}
class TBLEvL20 : public TObject
{
// time in ns, length in cm, mass in GeV, energy who knows
// 2+4*5 = 22 bytes
public:
Short_t fPad; // Paddle number of the tof
Float_t fPathLength; // path length from scattering vertex to tof
Float_t fX; // X position of the hit
Float_t fPosition; // Y position of the hit
Float_t fTimeOfFlight;// Time of flight from scattering vertex to tof
Float_t fEnergy; // Energy deposit by the particle in the tof
Float_t fGEnergy; // Geometric average of ADC
Float_t fTheta, fPhi; // track impact angle
Short_t ftdctop, ftdcbot, fadctop, fadcbot; // raw tdc/adc
}
class TBLEvBat : public TObject
{
// time in ns, length in cm, mass in GeV, energy who knows
// 2+4*5 = 22 bytes
public:
Short_t fPad; // Paddle number of the tof
Float_t fPathLength; // path length from scattering vertex to tof
Float_t fX; // X position of the hit
Float_t fPosition; // Y position of the hit
Float_t fTimeOfFlight;// Time of flight from scattering vertex to tof
Float_t fEnergy; // Energy deposit by the particle in the tof
Float_t fGEnergy; // Geometric average of ADC
Short_t ftdctop, ftdcbot, fadctop, fadcbot; // raw tdc/adc
}
class TBLEvWC : public TObject
{ // 4*18 bytes
public:
// track parameters at the entrance plane of wire chamber
// i.e. the initial point of the swims
// take phi from Newton as phi
// use plane equation of chamber front plane to recover X, Y vertex of
fast track
Float_t fP; // momentum (GeV)
Float_t fTheta; // theta(rad) at chamber front plane, in
// Blast coord system
Float_t fZ; // Z (cm) at chamber front plane, in Blast
// coord system
UInt_t Key[18]; // hit key(key, side, tdc)
Float_t fHits[18]; // hit position where track crosses wire
// plane
}
struct TBLEvent : public TObject
{
Int_t fNEvent; // coda event number
Long_t fTime; // global time
Int_t fuTime; // micro second
Short_t fNEpics; // corresponding Epics event #
Short_t fNScaler; // corresponding Scalar event #
UChar_t fTrig; // trigger type
UChar_t fType; // event type
UChar_t fNtrack; // # of WC tracks
UChar_t fSpinBits; // spin bit
Char_t fBeamHel; // beam helicity
Char_t fBeamFlip; // spin flip
TClonesArray* fTracks; // tracks, TCloneArray for lazy allocation
TClonesArray* fSC; // sc hits linked to tracks
TClonesArray* fCC; // cc hits linked to tracks
TClonesArray* fNC; // nc hits linked to tracks
TClonesArray* fL15; // L15 hit
TClonesArray* fL20; // L20 hit
TClonesArray* fL15_1; // second L15 hit
TClonesArray* fL20_1; // second L20 hit
TClonesArray* fBat; // bats hit
TClonesArray* fWC; // fast tracks
// outer detectors not linked to any charged particle
TClonesArray* fSC_um[2];
TClonesArray* fNC_um[2];
TClonesArray* fCC_um[2];
TClonesArray* fL15_um[2];
TClonesArray* fL20_um[2];
...
...
}
struct TBLMCEvent : public TObject
{
Float_t fPe, fPz, fPzz;
Float_t fXs, fXs0;
Int_t fNtrack;
TClonesArray* fMCTracks; // tracks, TCloneArray for lazy allocation
...
}
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