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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 | |
16 | /* |
17 | $Log$ |
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18 | Revision 1.9 1999/11/08 07:12:31 fca |
19 | Minor corrections thanks to I.Hrivnacova |
20 | |
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21 | Revision 1.8 1999/09/29 09:24:23 fca |
22 | Introduction of the Copyright and cvs Log |
23 | |
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24 | */ |
25 | |
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26 | ///////////////////////////////////////////////////////// |
27 | // Manager and hits classes for set:PHOS version 0 // |
28 | ///////////////////////////////////////////////////////// |
29 | |
30 | // --- ROOT system --- |
31 | #include "TH1.h" |
32 | #include "TRandom.h" |
33 | #include "TFile.h" |
34 | #include "TTree.h" |
35 | #include "TBRIK.h" |
36 | #include "TNode.h" |
37 | |
38 | // --- galice header files --- |
39 | #include "AliPHOSv0.h" |
40 | #include "AliRun.h" |
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41 | #include "AliMC.h" |
42 | |
43 | ClassImp(AliPHOSv0) |
44 | |
45 | //______________________________________________________________________________ |
46 | |
47 | |
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48 | AliPHOSv0::AliPHOSv0() |
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49 | { |
50 | fIdSens=0; |
51 | } |
52 | |
53 | //______________________________________________________________________________ |
54 | |
55 | AliPHOSv0::AliPHOSv0(const char *name, const char *title) |
56 | : AliPHOS(name, title) |
57 | { |
58 | fIdSens=0; |
59 | } |
60 | |
61 | //___________________________________________ |
62 | void AliPHOSv0::Init() |
63 | { |
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64 | fIdSens=gMC->VolId("PXTL"); |
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65 | } |
66 | |
67 | //___________________________________________ |
68 | void AliPHOSv0::CreateGeometry() |
69 | { |
70 | // *** DEFINITION OF THE -0.25<y<0.25 TILTED GEOMETRY OF THE PHOS *** |
71 | // ORIGIN : NICK VAN EIJNDHOVEN |
72 | |
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73 | Float_t pphi; |
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74 | Float_t r, dptcb[3], dpair[3], dphos[3], dpucp[3], dpasp[3]; |
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75 | Float_t dpxtl[3]; |
76 | Float_t yo; |
77 | Int_t idrotm[99]; |
78 | Float_t xp1, yp1, xp2, yp2; |
79 | |
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80 | Int_t *idtmed = fIdtmed->GetArray()-699; |
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81 | |
82 | // --- Dimensions of PbWO4 crystal --- |
83 | const Float_t XTL_X=2.2; |
84 | const Float_t XTL_Y=18.; |
85 | const Float_t XTL_Z=2.2; |
86 | // --- Tyvek wrapper thickness |
87 | const Float_t PAP_THICK=0.01; |
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88 | // --- Polystyrene Foam Outer Cover dimensions --- |
89 | const Float_t FOC_X=214.6; |
90 | const Float_t FOC_Y=80.; |
91 | const Float_t FOC_Z=260.; |
92 | // --- Inner AIR volume dimensions --- |
93 | const Float_t AIR_X=206.; |
94 | const Float_t AIR_Y=66.; |
95 | const Float_t AIR_Z=244.; |
96 | // --- Tyvek Crystal Block dimensions --- |
97 | const Float_t TCB_X=198.; |
98 | const Float_t TCB_Y=25.; |
99 | const Float_t TCB_Z=234.; |
100 | // --- Upper Cooling Plate thickness --- |
101 | const Float_t UCP_Y=0.06; |
102 | // --- Al Support Plate thickness --- |
103 | const Float_t ASP_Y=10.; |
104 | //--- Distance from IP to Foam Outer Cover top plate (needs to be 447.) --- |
105 | const Float_t FOC_R=467.; |
106 | //--- Distance from IP to Crystal Block top Surface (needs to be 460.) --- |
107 | const Float_t CBS_R=480.; |
108 | |
109 | // --- Dimensions of volumes --- |
110 | |
111 | |
112 | // --- Define PHOS box volume, fill with Polystyrene foam --- |
113 | dphos[0] = FOC_X/2.; |
114 | dphos[1] = FOC_Y/2.; |
115 | dphos[2] = FOC_Z/2.; |
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116 | gMC->Gsvolu("PHOS", "BOX ", idtmed[703], dphos, 3); |
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117 | |
118 | // --- Define air-filled box, place inside PHOS --- |
119 | dpair[0] = AIR_X/2.; |
120 | dpair[1] = AIR_Y/2.; |
121 | dpair[2] = AIR_Z/2.; |
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122 | gMC->Gsvolu("PAIR", "BOX ", idtmed[798], dpair, 3); |
123 | gMC->Gspos("PAIR", 1, "PHOS", 0., 0., 0., 0, "ONLY"); |
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124 | |
125 | // --- Define Upper Cooling Panel --- |
126 | // --- place it right behind upper foam plate --- |
127 | dpucp[0] = TCB_X/2.; |
128 | dpucp[1] = UCP_Y/2.; |
129 | dpucp[2] = TCB_Z/2.; |
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130 | gMC->Gsvolu("PUCP", "BOX ", idtmed[701], dpucp, 3); |
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131 | yo = (AIR_Y-UCP_Y)/2.; |
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132 | gMC->Gspos("PUCP", 1, "PAIR", 0., yo, 0., 0, "ONLY"); |
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133 | |
134 | // --- Define Crystal Block, fill with Tyvek, position inside PAIR --- |
135 | dptcb[0] = TCB_X/2.; |
136 | dptcb[1] = TCB_Y/2.; |
137 | dptcb[2] = TCB_Z/2.; |
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138 | gMC->Gsvolu("PTCB", "BOX ", idtmed[702], dptcb, 3); |
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139 | // --- Divide PTCB in X and Z directions -- |
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140 | gMC->Gsdvn("PSEC", "PTCB", 11, 1); |
141 | gMC->Gsdvn("PMOD", "PSEC", 13, 3); |
142 | gMC->Gsdvn("PSTR", "PMOD", 8, 1); |
143 | gMC->Gsdvn("PCEL", "PSTR", 8, 3); |
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144 | yo = (FOC_Y-TCB_Y)/2. -(CBS_R-FOC_R); |
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145 | gMC->Gspos("PTCB", 1, "PAIR", 0., yo, 0., 0, "ONLY"); |
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146 | |
147 | // --- Define PbWO4 crystal volume, place inside PCEL --- |
148 | dpxtl[0] = XTL_X/2.; |
149 | dpxtl[1] = XTL_Y/2.; |
150 | dpxtl[2] = XTL_Z/2.; |
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151 | gMC->Gsvolu("PXTL", "BOX ", idtmed[699], dpxtl, 3); |
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152 | yo = (TCB_Y-XTL_Y)/2. - PAP_THICK; |
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153 | gMC->Gspos("PXTL", 1, "PCEL", 0., yo, 0., 0, "ONLY"); |
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154 | |
155 | // --- Define Al Support Plate, position it inside PAIR --- |
156 | // --- right beneath PTCB --- |
157 | dpasp[0] = AIR_X/2.; |
158 | dpasp[1] = ASP_Y/2.; |
159 | dpasp[2] = AIR_Z/2.; |
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160 | gMC->Gsvolu("PASP", "BOX ", idtmed[701], dpasp, 3); |
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161 | yo = (FOC_Y-ASP_Y)/2. - (CBS_R-FOC_R+TCB_Y); |
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162 | gMC->Gspos("PASP", 1, "PAIR", 0., yo, 0., 0, "ONLY"); |
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163 | |
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164 | // --- Divide in X and Z direction (same way as PTCB) --- |
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165 | // gMC->Gsdvn("PCMO", "PCSE", 13, 3); |
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166 | // gMC->Gsdvn("PCST", "PCMO", 8, 1); |
167 | // gMC->Gsdvn("PCCE", "PCST", 8, 3); |
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168 | |
169 | // --- Position various PHOS units in ALICE setup --- |
170 | // --- PHOS itself first --- |
171 | r = FOC_R+FOC_Y/2.; |
172 | pphi = TMath::ATan(FOC_X/(2.*FOC_R)); |
173 | xp1 = -r * TMath::Sin(pphi * 3.); |
174 | yp1 = -r * TMath::Cos(pphi * 3.); |
175 | xp2 = -r * TMath::Sin(pphi); |
176 | yp2 = -r * TMath::Cos(pphi); |
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177 | pphi *= 180/kPI; |
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178 | AliMatrix(idrotm[0], 90.,-3*pphi, 90., 90-3*pphi, 0., 0.); |
179 | AliMatrix(idrotm[1], 90., -pphi, 90., 90-pphi, 0., 0.); |
180 | AliMatrix(idrotm[2], 90., pphi, 90., 90+pphi, 0., 0.); |
181 | AliMatrix(idrotm[3], 90., 3*pphi, 90., 90+3*pphi, 0., 0.); |
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182 | gMC->Gspos("PHOS", 1, "ALIC", xp1, yp1, 0., idrotm[0], "ONLY"); |
183 | gMC->Gspos("PHOS", 2, "ALIC", xp2, yp2, 0., idrotm[1], "ONLY"); |
184 | gMC->Gspos("PHOS", 3, "ALIC",-xp2, yp2, 0., idrotm[2], "ONLY"); |
185 | gMC->Gspos("PHOS", 4, "ALIC",-xp1, yp1, 0., idrotm[3], "ONLY"); |
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186 | |
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187 | // --- Set modules seen without tree for drawings --- |
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188 | gMC->Gsatt("PMOD", "SEEN", -2); |
189 | gMC->Gsatt("PCMO", "SEEN", -2); |
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190 | } |
191 | |
192 | //___________________________________________ |
193 | void AliPHOSv0::CreateMaterials() |
194 | { |
195 | // *** DEFINITION OF AVAILABLE PHOS MATERIALS *** |
196 | // ORIGIN : NICK VAN EIJNDHOVEN |
197 | |
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198 | Int_t ISXFLD = gAlice->Field()->Integ(); |
199 | Float_t SXMGMX = gAlice->Field()->Max(); |
200 | |
201 | // --- The PbWO4 crystals --- |
202 | Float_t ax[3] = { 207.19,183.85,16. }; |
203 | Float_t zx[3] = { 82.,74.,8. }; |
204 | Float_t wx[3] = { 1.,1.,4. }; |
205 | Float_t dx = 8.28; |
206 | // --- The polysterene scintillator (CH) --- |
207 | Float_t ap[2] = { 12.011,1.00794 }; |
208 | Float_t zp[2] = { 6.,1. }; |
209 | Float_t wp[2] = { 1.,1. }; |
210 | Float_t dp = 1.032; |
211 | // --- Tyvek (CnH2n) |
212 | Float_t at[2] = { 12.011,1.00794 }; |
213 | Float_t zt[2] = { 6.,1. }; |
214 | Float_t wt[2] = { 1.,2. }; |
215 | Float_t dt = .331; |
216 | // --- Polystyrene foam --- |
217 | Float_t af[2] = { 12.011,1.00794 }; |
218 | Float_t zf[2] = { 6.,1. }; |
219 | Float_t wf[2] = { 1.,1. }; |
220 | Float_t df = .3; |
221 | |
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222 | Int_t *idtmed = fIdtmed->GetArray()-699; |
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223 | |
224 | AliMixture( 0, "PbWO4$", ax, zx, dx, -3, wx); |
225 | AliMixture( 1, "Polystyrene$", ap, zp, dp, -2, wp); |
226 | AliMaterial(2, "Al$", 26.98, 13., 2.7, 8.9, 999.); |
227 | // --- Absorption length^ is ignored --- |
228 | AliMixture( 3, "Tyvek$", at, zt, dt, -2, wt); |
229 | AliMixture( 4, "Foam$", af, zf, df, -2, wf); |
230 | AliMaterial(9, "Air$", 14.61, 7.3, .001205, 30420., 67500); |
231 | |
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232 | AliMedium(0, "PHOS Xtal $", 0, 1, ISXFLD, SXMGMX, 10., .1, .1, .1, .1); |
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233 | AliMedium(2, "Al parts $", 2, 0, ISXFLD, SXMGMX, 10., .1, .1, .001, .001); |
234 | AliMedium(3, "Tyvek wrapper$", 3, 0, ISXFLD, SXMGMX, 10., .1, .1, .001, .001); |
235 | AliMedium(4, "Polyst. foam $", 4, 0, ISXFLD, SXMGMX, 10., .1, .1, .1, .1); |
236 | AliMedium(99, "Air $", 9, 0, ISXFLD, SXMGMX, 10., 1., .1, .1, 10.); |
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237 | |
238 | // --- Generate explicitly delta rays in aluminium parts --- |
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239 | gMC->Gstpar(idtmed[701], "LOSS", 3.); |
240 | gMC->Gstpar(idtmed[701], "DRAY", 1.); |
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241 | } |
242 | |
243 | void AliPHOSv0::StepManager() |
244 | { |
245 | |
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246 | TClonesArray &lhits = *fHits; |
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247 | TLorentzVector p; |
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248 | Int_t copy, i; |
249 | Int_t vol[5]; |
250 | Float_t hits[4]; |
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251 | if(gMC->CurrentVolID(copy) == fIdSens) { |
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252 | // |
253 | //We are in the sensitive volume |
254 | for(i=0;i<4;i++) { |
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255 | gMC->CurrentVolOffID(i+1,copy); |
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256 | vol[4-i]=copy; |
257 | } |
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258 | gMC->CurrentVolOffID(7,copy); |
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259 | vol[0]=copy; |
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260 | gMC->TrackPosition(p); |
261 | for(i=0;i<3;++i) hits[i]=p[i]; |
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262 | hits[3]=gMC->Edep(); |
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263 | new(lhits[fNhits++]) AliPHOShit(fIshunt,gAlice->CurrentTrack(),vol,hits); |
264 | } |
265 | } |