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a9e2aefa | 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 | /* $Id$ */ |
a9e2aefa | 17 | |
30178c30 | 18 | #include <TMath.h> |
19 | ||
a9e2aefa | 20 | #include "AliMUONSegmentationTriggerY.h" |
3f2cdba8 | 21 | #include "AliMUONTriggerConstants.h" |
9e1a0ddb | 22 | #include "AliMUON.h" |
23 | #include "AliRun.h" | |
30178c30 | 24 | |
a9e2aefa | 25 | ClassImp(AliMUONSegmentationTriggerY) |
26 | ||
30178c30 | 27 | //------------------------------------------------------------------ |
28 | AliMUONSegmentationTriggerY::AliMUONSegmentationTriggerY() | |
29 | : AliMUONSegmentationTrigger() | |
30 | { | |
31 | // Constructor | |
32 | } | |
33 | ||
3f2cdba8 | 34 | //------------------------------------------------------------------ |
d81db581 | 35 | void AliMUONSegmentationTriggerY::Init(Int_t chamber) |
a9e2aefa | 36 | { |
3f2cdba8 | 37 | // intialize Y segmentation |
9e1a0ddb | 38 | AliMUON *pMUON = (AliMUON *) gAlice->GetModule("MUON"); |
ef077202 | 39 | if(pMUON->GetDebug()>1) printf("%s: Initialize Trigger Chamber Geometry Y\n",ClassName()); |
d81db581 | 40 | AliMUONSegmentationTrigger::Init(chamber); |
a9e2aefa | 41 | |
42 | // calculate x & y position of Y strips | |
3f2cdba8 | 43 | Int_t nModule=AliMUONTriggerConstants::Nmodule(); |
44 | for (Int_t imodule=0; imodule<nModule; imodule++) { | |
45 | Float_t width=StripSizeY(AliMUONTriggerConstants::ModuleId(imodule)); | |
46 | Int_t nStrip=AliMUONTriggerConstants::NstripY(imodule); | |
47 | for (Int_t istrip=0; istrip<nStrip; istrip++){ | |
a9e2aefa | 48 | if (imodule<63) { |
3f2cdba8 | 49 | fXofysmin[imodule][istrip]= |
50 | (AliMUONTriggerConstants::XcMin(imodule)+width*(istrip))*fZscale; | |
51 | fXofysmax[imodule][istrip]= | |
52 | (AliMUONTriggerConstants::XcMin(imodule)+width*(istrip+1))*fZscale; | |
a9e2aefa | 53 | } else { |
54 | fXofysmin[imodule][istrip]=-1.*fXofysmax[imodule-63][istrip]; | |
55 | fXofysmax[imodule][istrip]=-1.*fXofysmin[imodule-63][istrip]; | |
56 | } | |
3f2cdba8 | 57 | fYofysmin[imodule][istrip] = fYcmin[imodule]*fZscale; |
58 | fYofysmax[imodule][istrip] = fYcmax[imodule]*fZscale; | |
a9e2aefa | 59 | } |
60 | } | |
61 | ||
62 | } | |
63 | ||
64 | //------------------------------------------------------------------ | |
c3eff6ad | 65 | void AliMUONSegmentationTriggerY::GetPadI(Float_t x,Float_t y,Int_t &ix,Int_t &iy) |
66 | { | |
a9e2aefa | 67 | // Returns pad coordinates (ix,iy) for given real coordinates (x,y) |
68 | // x,y = real coordinates; ix = module number , iy = strip number | |
69 | ||
70 | ix = 0; | |
71 | iy = 0; | |
3f2cdba8 | 72 | Int_t nModule=AliMUONTriggerConstants::Nmodule(); |
73 | for (Int_t imodule=0; imodule<nModule; imodule++) { | |
74 | Int_t nStrip=AliMUONTriggerConstants::NstripY(imodule); | |
75 | for (Int_t istrip=0; istrip<nStrip; istrip++){ | |
a9e2aefa | 76 | if (x>fXofysmin[imodule][istrip]&&x<fXofysmax[imodule][istrip]&& |
77 | y>fYofysmin[imodule][istrip]&&y<fYofysmax[imodule][istrip]){ | |
3f2cdba8 | 78 | ix = AliMUONTriggerConstants::ModuleId(imodule); |
a9e2aefa | 79 | iy = istrip; |
80 | } | |
81 | } | |
82 | } | |
83 | } | |
84 | ||
85 | //------------------------------------------------------------------ | |
c3eff6ad | 86 | void AliMUONSegmentationTriggerY::GetPadC(Int_t ix, Int_t iy, Float_t &x, Float_t &y) |
87 | { | |
a9e2aefa | 88 | // Returns real coordinates (x,y) for given pad coordinates (ix,iy) |
89 | // ix = module number , iy = strip number; x,y = center of strip | |
90 | x = 0.; | |
91 | y = 0.; | |
3f2cdba8 | 92 | Int_t nModule=AliMUONTriggerConstants::Nmodule(); |
93 | for (Int_t imodule=0; imodule<nModule; imodule++) { | |
94 | if (AliMUONTriggerConstants::ModuleId(imodule)==ix){ | |
a9e2aefa | 95 | x=fXofysmin[imodule][iy]+(fXofysmax[imodule][iy]-fXofysmin[imodule][iy])/2.; |
96 | y=fYofysmin[imodule][iy]+(fYofysmax[imodule][iy]-fYofysmin[imodule][iy])/2.; | |
97 | } | |
98 | } | |
99 | } | |
100 | ||
101 | //------------------------------------------------------------------ | |
102 | void AliMUONSegmentationTriggerY::SetPadSize(Float_t p1, Float_t p2) | |
103 | { | |
104 | // Sets the padsize | |
105 | // | |
106 | fDpx=p1; | |
107 | fDpy=p2; | |
108 | } | |
109 | ||
110 | //------------------------------------------------------------------ | |
111 | void AliMUONSegmentationTriggerY:: | |
03f221a7 | 112 | Neighbours(Int_t iX, Int_t iY, Int_t* Nlist, Int_t Xlist[10], Int_t Ylist[10]){ |
113 | // Returns list of 10 next neighbours for given Y strip (ix, iy) | |
114 | // neighbour number 9 8 7 6 5 (Y strip (ix, iy)) 0 1 2 3 4 in the list | |
115 | // \_______/ \_______/ | |
116 | // left right | |
117 | // Note : should not be used to return a list of neighbours larger than 16 ! | |
118 | ||
119 | Int_t absiX = TMath::Abs(iX); | |
120 | Int_t numModule = ModuleNumber(absiX); // module number Id. | |
121 | Int_t nStrip = AliMUONTriggerConstants::NstripY(numModule); //numb of strips | |
122 | Int_t iCandidateLeft, iCandidateRight; | |
123 | Int_t iNewCandidateRight=0; | |
124 | Int_t iNewCandidateLeft=0; | |
125 | // first strip number on the right of the left module | |
126 | if ( (absiX-(Int_t(absiX/10))*10)!=1 && absiX!=52 ) | |
127 | iNewCandidateLeft = | |
128 | AliMUONTriggerConstants::NstripY(ModuleNumber(absiX-1))-1; | |
129 | Int_t j; | |
a9e2aefa | 130 | |
03f221a7 | 131 | *Nlist = 10; |
132 | for (Int_t i=0; i<10; i++) Xlist[i]=Ylist[i]=0; | |
133 | ||
134 | if (iY < nStrip) { | |
135 | ||
136 | for (Int_t i=0; i<5; i++) { | |
137 | j = i + 5; | |
138 | iCandidateRight = iY + (i + 1); | |
139 | iCandidateLeft = iY - (i + 1); | |
140 | if (iCandidateRight < nStrip) { // strip in same module | |
141 | Xlist[i] = absiX; | |
142 | Ylist[i] = iCandidateRight; | |
143 | } else if ((absiX+1)%10!=8) { // need to scan the module on the right | |
144 | Xlist[i] = absiX+1; | |
145 | Ylist[i] = iNewCandidateRight; | |
146 | iNewCandidateRight++; | |
147 | } | |
148 | ||
149 | if (iCandidateLeft >=0 ) { // strip in same module | |
150 | Xlist[j] = absiX; | |
151 | Ylist[j] = iCandidateLeft; | |
152 | } else if ( iNewCandidateLeft !=0) { | |
153 | Xlist[j] = absiX-1; | |
154 | Ylist[j] = iNewCandidateLeft; | |
155 | iNewCandidateLeft--; | |
156 | } | |
a9e2aefa | 157 | } |
158 | ||
159 | if (iX<0) { // left side of chamber | |
03f221a7 | 160 | for (Int_t i=0; i<10; i++) { |
161 | if (Xlist[i]!=0) Xlist[i]=-Xlist[i]; | |
162 | } | |
a9e2aefa | 163 | } |
03f221a7 | 164 | |
165 | } // iY < nStrip | |
a9e2aefa | 166 | } |
167 | ||
168 | //------------------------------------------------------------------ | |
169 | void AliMUONSegmentationTriggerY::SetPad(Int_t ix, Int_t iy) | |
170 | { | |
171 | // Sets virtual pad coordinates, needed for evaluating pad response | |
172 | // outside the tracking program | |
ecfa008b | 173 | GetPadC(ix,iy,fX,fY); |
174 | GetPadI(fX,fY,fIx,fIy); | |
a9e2aefa | 175 | fSector=Sector(ix,iy); |
176 | } | |
177 | ||
178 | //------------------------------------------------------------------ | |
c3eff6ad | 179 | Int_t AliMUONSegmentationTriggerY::ISector() |
a9e2aefa | 180 | { return fSector;} |
181 | ||
182 | //------------------------------------------------------------------ | |
c3eff6ad | 183 | |
a9e2aefa | 184 | Int_t AliMUONSegmentationTriggerY::Ix() |
ecfa008b | 185 | { return fIx;} |
a9e2aefa | 186 | |
187 | //------------------------------------------------------------------ | |
c3eff6ad | 188 | |
a9e2aefa | 189 | Int_t AliMUONSegmentationTriggerY::Iy() |
ecfa008b | 190 | { return fIy;} |
a9e2aefa | 191 | |
192 | //------------------------------------------------------------------ | |
c3eff6ad | 193 | Float_t AliMUONSegmentationTriggerY::Dpx(Int_t isec) const |
3f2cdba8 | 194 | { |
195 | // returns x size of y strips for sector isec | |
a9e2aefa | 196 | if (isec==1) { |
197 | return 2.125*fZscale; | |
198 | } else if (isec==2) { | |
199 | return 2.125*fZscale; | |
200 | } else if (isec==3) { | |
201 | return 2.125*fZscale; | |
202 | } else if (isec==4) { | |
203 | return 4.25*fZscale; | |
204 | } else { | |
205 | return 0.; | |
206 | } | |
207 | } | |
208 | ||
209 | //------------------------------------------------------------------ | |
c3eff6ad | 210 | Float_t AliMUONSegmentationTriggerY::Dpy(Int_t isec) const |
3f2cdba8 | 211 | { |
212 | // returns y size of y strips for sector isec | |
a9e2aefa | 213 | if (isec==1) { |
214 | return 68.0*fZscale; | |
215 | } else if (isec==2) { | |
216 | return 51.0*fZscale; | |
217 | } else if (isec==3) { | |
218 | return 68.0*fZscale; | |
219 | } else if (isec==4) { | |
220 | return 68.0*fZscale; | |
221 | } else if (isec==5) { | |
222 | return 68.0*fZscale; | |
223 | } else { | |
224 | return 0.; | |
225 | } | |
e889a146 | 226 | } |
227 | //------------------------------------------------------------------ | |
228 | void AliMUONSegmentationTriggerY::GetPadI(Float_t x, Float_t y, Float_t /*z*/, Int_t &ix, Int_t &iy) | |
229 | { | |
230 | GetPadI(x, y, ix, iy); | |
a9e2aefa | 231 | } |
232 | ||
233 | //------------------------------------------------------------------ | |
234 | void AliMUONSegmentationTriggerY::SetHit(Float_t xhit, Float_t yhit) | |
3f2cdba8 | 235 | { |
236 | // set hits during diintegration | |
03f221a7 | 237 | AliMUONSegmentationTrigger::SetHit(xhit,yhit); |
3f2cdba8 | 238 | } |
a9e2aefa | 239 | //------------------------------------------------------------------ |
e889a146 | 240 | void AliMUONSegmentationTriggerY::SetHit(Float_t xhit, Float_t yhit, Float_t /*zhit*/) |
241 | { | |
242 | SetHit(xhit, yhit); | |
243 | } | |
244 | //------------------------------------------------------------------ | |
245 | Int_t AliMUONSegmentationTriggerY::Sector(Int_t ix, Int_t /*iy*/) | |
a9e2aefa | 246 | { |
247 | // Returns sector number for given module | |
248 | // | |
249 | Int_t absix=TMath::Abs(ix); | |
250 | Int_t iwidth=Int_t(StripSizeY(absix)); | |
3f2cdba8 | 251 | |
a9e2aefa | 252 | if (absix==52) { |
253 | return 1; | |
254 | } else if (absix==41||absix==61) { | |
255 | return 2; | |
256 | } else if (iwidth==2) { | |
257 | return 3; | |
258 | } else if (iwidth==4) { | |
259 | return 4; | |
260 | } else { | |
261 | return 0; | |
262 | } | |
263 | } | |
264 | ||
265 | //------------------------------------------------------------------ | |
266 | void AliMUONSegmentationTriggerY:: | |
03f221a7 | 267 | IntegrationLimits(Float_t& x1, Float_t& x2, Float_t& x3, Float_t& x4) |
a9e2aefa | 268 | { |
269 | // returns quantities needed to evaluate neighbour strip response | |
270 | Int_t ix,iy; | |
271 | Float_t xstrip,ystrip; | |
ecfa008b | 272 | GetPadI(fXhit,fYhit,ix,iy); |
a30a000f | 273 | GetPadC(ix,iy,xstrip,ystrip); |
ecfa008b | 274 | x1=fXhit; // hit x position |
a9e2aefa | 275 | x2=xstrip; // x coordinate of the main strip |
ecfa008b | 276 | x3=fX; // current strip real x coordinate |
03f221a7 | 277 | // width=StripSizeY(ix); // width of the main strip |
278 | ||
279 | // find the position of the 2 borders of the current strip | |
280 | Float_t xmin = fXofysmin[ModuleNumber(fIx)][fIy]; | |
281 | Float_t xmax = fXofysmax[ModuleNumber(fIx)][fIy]; | |
282 | ||
283 | // dist. between the hit and the closest border of the current strip | |
284 | x4 = (TMath::Abs(xmax-x1) > TMath::Abs(xmin-x1)) ? | |
285 | TMath::Abs(xmin-x1):TMath::Abs(xmax-x1); | |
286 | ||
a9e2aefa | 287 | } |
288 | ||
289 | ||
290 | ||
291 |