3 /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
15 class AliITShit : public AliHit {
16 ////////////////////////////////////////////////////////////////////////
18 // Written by Rene Brun, Federico Carminati, and Roberto Barbera
21 // Modified and documented by Bjorn S. Nilsen
24 // AliITShit is the hit class for the ITS. Hits are the information
25 // that comes from a Monte Carlo at each step as a particle mass through
26 // sensitive detector elements as particles are transported through a
32 // See AliHit for a full description. The track number of the track
33 // that made this hit.
36 // See AliHit for a full description. The global x position of the
37 // hit (in the standard units of the Monte Carlo).
40 // See AliHit for a full description. The global y position of the
41 // hit (in the standard units of the Monte Carlo).
44 // See AliHit for a full description. The global z position of the
45 // hit (in the standard units of the Monte Carlo).
48 // The track status flag. This flag indicates the track status
49 // at the time of creating this hit. It is made up of the following 8
50 // status bits from highest order to lowest order bits
51 // 0 : IsTrackAlive(): IsTrackStop():IsTrackDisappeared():
52 // IsTrackOut():IsTrackExiting():IsTrackEntering():IsTrackInside() .
53 // See AliMC for a description of these functions. If the function is
54 // true then the bit is set to one, otherwise it is zero.
57 // The layer number of the detector that contains this hit. See
58 // AliITSgeom and AliITSv? for a description of the geometry.
61 // The ladder number of the detector that contains this hit. See
62 // AliITSgeom and AliITSv? for a description of the geometry.
65 // The detector number of the detector that contains this hit. See
66 // AliITSgeom and AliITSv? for a description of the geometry.
69 // The x momentum, in global coordinates, of the particle that
70 // "created" the hit at the time and position of the hit. The units
71 // are those determined by the Monte Carlo.
74 // The y momentum, in global coordinates, of the particle that
75 // "created" the hit at the time and position of the hit. The units
76 // are those determined by the Monte Carlo.
79 // The z momentum, in global coordinates, of the particle that
80 // "created" the hit at the time and position of the hit. The units
81 // are those determined by the Monte Carlo.
84 // The energy lost by the particle during the step ending in this
85 // hit. The units are those determined by the Monte Carlo.
88 // The time of flight associated with the particle ending in this
89 // hit. The time is typically measured from the point of creation of the
90 // original particle (if this particle is a daughter). The units
91 // are those determined by the Monte Carlo.
94 ////////////////////////////////////////////////////////////////////////
95 // public; // defined in AliHit
96 // Int_t fTrack // defined in AliHit
97 // Float_t fX; // defined in AliHit
98 // Float_t fY; // defined in AliHit
99 // Float_t fZ; // defined in AliHit
104 // Default consrtructor
106 AliITShit(Int_t shunt, Int_t track, Int_t *vol, Float_t *hits);
107 virtual ~AliITShit() {}
108 // Get Hit information functions.
109 // virtual int GetTrack() const {return fTrack;} // define in AliHit
110 // virtual void SetTrack(int track) const {fTrack=track;) // AliHit
111 virtual Int_t GetTrackStatus() const {
112 //returns the status code
115 virtual Int_t GetLayer() const {
116 // returns the layer number
119 virtual Int_t GetLadder() const {
120 // returns the ladder number
123 virtual Int_t GetDetector() const {
124 // returns the detector number
127 virtual void GetDetectorID(Int_t &layer,Int_t &ladder,
130 // returns the detector ID
131 layer=fLayer;ladder=fLadder;detector=fDet;return;
133 virtual Int_t GetModule();
134 virtual Float_t GetIonization() const {
135 // returns the Destep
139 virtual void GetPositionG(Float_t &x,Float_t &y,Float_t &z)
141 // returns the position in the Global
143 x=fX;y=fY;z=fZ;return;
145 virtual void GetPositionG(Double_t &x,Double_t &y,Double_t &z)
147 // returns the position in the Global
149 x=fX;y=fY;z=fZ;return;
151 virtual Float_t GetTOF() const {
152 // returns the time of flight
155 // Returns particle 3 position at this hit in global coordinates.
156 virtual void GetPositionG(Float_t &x,Float_t &y,Float_t &z,
159 // returns the position in the Global
160 //frame and the time of flight
161 x=fX;y=fY;z=fZ,tof=fTof;return;
163 virtual void GetPositionG(Double_t &x,Double_t &y,Double_t &z,
166 // Returns particle 3 position and
167 //the time of flight at this hit
168 // in global coordinates.
169 x=fX;y=fY;z=fZ,tof=fTof;return;
172 virtual Float_t GetXG()const {
173 // Returns particle X position at this hit
174 // in global coordinates.
178 virtual Float_t GetYG()const {
179 // Returns particle X position at this hit
180 // in global coordinates.
184 virtual Float_t GetZG()const {
185 // Returns particle Z position at this hit
186 // in global coordinates.
190 virtual void GetPositionL(Float_t &x,Float_t &y,Float_t &z);
191 // Returns particle 3 position at this hit in local coordinates.
192 virtual void GetPositionL(Float_t &x,Float_t &y,Float_t &z,
194 virtual void GetPositionL(Double_t &x,Double_t &y,Double_t &z){
195 // Returns particle 3 position at this hit in local coordinates.
196 Float_t xf,yf,zf;GetPositionL(xf,yf,zf);x=xf,y=yf;z=zf;}
198 virtual void GetPositionL(Double_t &x,Double_t &y,Double_t &z,
200 // Returns particle 3 position and the time of flight at this hit
201 // in local coordinates.
202 Float_t xf,yf,zf,tf;GetPositionL(xf,yf,zf,tf);x=xf,y=yf;z=zf;tof=tf;}
204 virtual Float_t GetXL();
205 // Returns particle X position at this hit in local coordinates.
206 virtual Float_t GetYL();
207 // Returns particle Y position at this hit in local coordinates.
208 virtual Float_t GetZL();
209 // Returns particle Z position at this hit in local coordinates.
210 // Get Monti Carlo information about hit.
211 virtual void GetMomentumG(Float_t &px,Float_t &py,Float_t &pz)
213 // returns the particle momentum in the
215 px=fPx;py=fPy;pz=fPz;return;
217 virtual void GetMomentumG(Double_t &px,Double_t &py,Double_t &pz)
219 // returns the particle momentum in the
221 px=fPx;py=fPy;pz=fPz;return;
224 virtual Float_t GetPXG()const {
225 // Returns particle X momentum at
226 // this hit in global coordinates.
230 virtual Float_t GetPYG()const {
231 // Returns particle Y momentum at
232 // this hit in global coordinates.
236 virtual Float_t GetPZG()const {
237 // Returns particle Z momentum at
238 // this hit in global coordinates.
242 virtual void GetMomentumL(Float_t &px,Float_t &py,Float_t &pz);
243 virtual void GetMomentumL(Double_t &px,Double_t &py,Double_t &pz){
244 // Returns particle 3 momentum at this hit in local coordinates.
245 Float_t x,y,z;GetMomentumL(x,y,z);px=x,py=y,pz=z;}
248 virtual Float_t GetPXL();
249 // Returns particle X momentum at this hit in local coordinates.
251 virtual Float_t GetPYL();
252 // Returns particle Y momentum at this hit in local coordinates.
254 virtual Float_t GetPZL();
255 // Returns particle Z momentum at this hit in local coordinates.
257 virtual TParticle * GetParticle(); // Returns pointer to this particle.
259 Bool_t StatusInside() {
260 // checks if the particle is "inside"
261 if((fStatus&0x0001)==0) return kFALSE;
264 Bool_t StatusEntering() {
265 // checks if the particle is "entering"
266 if((fStatus&0x0002)==0) return kFALSE;
269 Bool_t StatusExiting() {
270 // checks if the particle is "exiting"
271 if((fStatus&0x0004)==0) return kFALSE;
275 // checks if the particle is "out"
276 if((fStatus&0x0008)==0) return kFALSE;
279 Bool_t StatusDisappeared() {
280 // checks if the particle is "disappeared"
281 if((fStatus&0x00010)==0) return kFALSE;
284 Bool_t StatusStop() {
285 // checks if the particle is "stopped"
286 if((fStatus&0x00020)==0) return kFALSE;
289 Bool_t StatusAlive() {
290 // checks if the particle is "alive"
291 if((fStatus&0x00030)==0) return kFALSE;
296 Int_t fStatus; // Track Status
297 Int_t fLayer; // Layer number
298 Int_t fLadder; // Ladder number
299 Int_t fDet; // Detector number
300 Float_t fPx; // PX of particle at the point of the hit
301 Float_t fPy; // PY of particle at the point of the hit
302 Float_t fPz; // PZ of particle at the point of the hit
303 Float_t fDestep; // Energy deposited in the current step
304 Float_t fTof; // Time of flight at the point of the hit
306 ClassDef(AliITShit,1) //Hits object for set:ITS