1 /////////////////////////////////////////////////////////
2 // Manager and hits classes for set:PHOS version 0 //
3 /////////////////////////////////////////////////////////
13 // --- galice header files ---
14 #include "AliPHOSv0.h"
20 //______________________________________________________________________________
23 AliPHOSv0::AliPHOSv0()
28 //______________________________________________________________________________
30 AliPHOSv0::AliPHOSv0(const char *name, const char *title)
31 : AliPHOS(name, title)
36 //___________________________________________
37 void AliPHOSv0::Init()
39 fIdSens=gMC->VolId("PXTL");
42 //___________________________________________
43 void AliPHOSv0::CreateGeometry()
45 // *** DEFINITION OF THE -0.25<y<0.25 TILTED GEOMETRY OF THE PHOS ***
46 // ORIGIN : NICK VAN EIJNDHOVEN
49 Float_t r, dptcb[3], dpair[3], dphos[3], dpucp[3], dpasp[3];
53 Float_t xp1, yp1, xp2, yp2;
55 Int_t *idtmed = fIdtmed->GetArray()-699;
57 // --- Dimensions of PbWO4 crystal ---
58 const Float_t XTL_X=2.2;
59 const Float_t XTL_Y=18.;
60 const Float_t XTL_Z=2.2;
61 // --- Tyvek wrapper thickness
62 const Float_t PAP_THICK=0.01;
63 // --- Polystyrene Foam Outer Cover dimensions ---
64 const Float_t FOC_X=214.6;
65 const Float_t FOC_Y=80.;
66 const Float_t FOC_Z=260.;
67 // --- Inner AIR volume dimensions ---
68 const Float_t AIR_X=206.;
69 const Float_t AIR_Y=66.;
70 const Float_t AIR_Z=244.;
71 // --- Tyvek Crystal Block dimensions ---
72 const Float_t TCB_X=198.;
73 const Float_t TCB_Y=25.;
74 const Float_t TCB_Z=234.;
75 // --- Upper Cooling Plate thickness ---
76 const Float_t UCP_Y=0.06;
77 // --- Al Support Plate thickness ---
78 const Float_t ASP_Y=10.;
79 //--- Distance from IP to Foam Outer Cover top plate (needs to be 447.) ---
80 const Float_t FOC_R=467.;
81 //--- Distance from IP to Crystal Block top Surface (needs to be 460.) ---
82 const Float_t CBS_R=480.;
84 // --- Dimensions of volumes ---
87 // --- Define PHOS box volume, fill with Polystyrene foam ---
91 gMC->Gsvolu("PHOS", "BOX ", idtmed[703], dphos, 3);
93 // --- Define air-filled box, place inside PHOS ---
97 gMC->Gsvolu("PAIR", "BOX ", idtmed[798], dpair, 3);
98 gMC->Gspos("PAIR", 1, "PHOS", 0., 0., 0., 0, "ONLY");
100 // --- Define Upper Cooling Panel ---
101 // --- place it right behind upper foam plate ---
105 gMC->Gsvolu("PUCP", "BOX ", idtmed[701], dpucp, 3);
106 yo = (AIR_Y-UCP_Y)/2.;
107 gMC->Gspos("PUCP", 1, "PAIR", 0., yo, 0., 0, "ONLY");
109 // --- Define Crystal Block, fill with Tyvek, position inside PAIR ---
113 gMC->Gsvolu("PTCB", "BOX ", idtmed[702], dptcb, 3);
114 // --- Divide PTCB in X and Z directions --
115 gMC->Gsdvn("PSEC", "PTCB", 11, 1);
116 gMC->Gsdvn("PMOD", "PSEC", 13, 3);
117 gMC->Gsdvn("PSTR", "PMOD", 8, 1);
118 gMC->Gsdvn("PCEL", "PSTR", 8, 3);
119 yo = (FOC_Y-TCB_Y)/2. -(CBS_R-FOC_R);
120 gMC->Gspos("PTCB", 1, "PAIR", 0., yo, 0., 0, "ONLY");
122 // --- Define PbWO4 crystal volume, place inside PCEL ---
126 gMC->Gsvolu("PXTL", "BOX ", idtmed[699], dpxtl, 3);
127 yo = (TCB_Y-XTL_Y)/2. - PAP_THICK;
128 gMC->Gspos("PXTL", 1, "PCEL", 0., yo, 0., 0, "ONLY");
130 // --- Define Al Support Plate, position it inside PAIR ---
131 // --- right beneath PTCB ---
135 gMC->Gsvolu("PASP", "BOX ", idtmed[701], dpasp, 3);
136 yo = (FOC_Y-ASP_Y)/2. - (CBS_R-FOC_R+TCB_Y);
137 gMC->Gspos("PASP", 1, "PAIR", 0., yo, 0., 0, "ONLY");
139 // --- Divide in X and Z direction (same way as PTCB) ---
140 gMC->Gsdvn("PCMO", "PCSE", 13, 3);
141 gMC->Gsdvn("PCST", "PCMO", 8, 1);
142 gMC->Gsdvn("PCCE", "PCST", 8, 3);
144 // --- Position various PHOS units in ALICE setup ---
145 // --- PHOS itself first ---
147 pphi = TMath::ATan(FOC_X/(2.*FOC_R));
148 xp1 = -r * TMath::Sin(pphi * 3.);
149 yp1 = -r * TMath::Cos(pphi * 3.);
150 xp2 = -r * TMath::Sin(pphi);
151 yp2 = -r * TMath::Cos(pphi);
153 AliMatrix(idrotm[0], 90.,-3*pphi, 90., 90-3*pphi, 0., 0.);
154 AliMatrix(idrotm[1], 90., -pphi, 90., 90-pphi, 0., 0.);
155 AliMatrix(idrotm[2], 90., pphi, 90., 90+pphi, 0., 0.);
156 AliMatrix(idrotm[3], 90., 3*pphi, 90., 90+3*pphi, 0., 0.);
157 gMC->Gspos("PHOS", 1, "ALIC", xp1, yp1, 0., idrotm[0], "ONLY");
158 gMC->Gspos("PHOS", 2, "ALIC", xp2, yp2, 0., idrotm[1], "ONLY");
159 gMC->Gspos("PHOS", 3, "ALIC",-xp2, yp2, 0., idrotm[2], "ONLY");
160 gMC->Gspos("PHOS", 4, "ALIC",-xp1, yp1, 0., idrotm[3], "ONLY");
162 // --- Set modules seen without tree for drawings ---
163 gMC->Gsatt("PMOD", "SEEN", -2);
164 gMC->Gsatt("PCMO", "SEEN", -2);
167 //___________________________________________
168 void AliPHOSv0::CreateMaterials()
170 // *** DEFINITION OF AVAILABLE PHOS MATERIALS ***
171 // ORIGIN : NICK VAN EIJNDHOVEN
173 Int_t ISXFLD = gAlice->Field()->Integ();
174 Float_t SXMGMX = gAlice->Field()->Max();
176 // --- The PbWO4 crystals ---
177 Float_t ax[3] = { 207.19,183.85,16. };
178 Float_t zx[3] = { 82.,74.,8. };
179 Float_t wx[3] = { 1.,1.,4. };
181 // --- The polysterene scintillator (CH) ---
182 Float_t ap[2] = { 12.011,1.00794 };
183 Float_t zp[2] = { 6.,1. };
184 Float_t wp[2] = { 1.,1. };
187 Float_t at[2] = { 12.011,1.00794 };
188 Float_t zt[2] = { 6.,1. };
189 Float_t wt[2] = { 1.,2. };
191 // --- Polystyrene foam ---
192 Float_t af[2] = { 12.011,1.00794 };
193 Float_t zf[2] = { 6.,1. };
194 Float_t wf[2] = { 1.,1. };
197 Int_t *idtmed = fIdtmed->GetArray()-699;
199 AliMixture( 0, "PbWO4$", ax, zx, dx, -3, wx);
200 AliMixture( 1, "Polystyrene$", ap, zp, dp, -2, wp);
201 AliMaterial(2, "Al$", 26.98, 13., 2.7, 8.9, 999.);
202 // --- Absorption length^ is ignored ---
203 AliMixture( 3, "Tyvek$", at, zt, dt, -2, wt);
204 AliMixture( 4, "Foam$", af, zf, df, -2, wf);
205 AliMaterial(9, "Air$", 14.61, 7.3, .001205, 30420., 67500);
207 AliMedium(0, "PHOS Xtal $", 0, 1, ISXFLD, SXMGMX, 10., .1, .1, .1, .1);
208 AliMedium(2, "Al parts $", 2, 0, ISXFLD, SXMGMX, 10., .1, .1, .001, .001);
209 AliMedium(3, "Tyvek wrapper$", 3, 0, ISXFLD, SXMGMX, 10., .1, .1, .001, .001);
210 AliMedium(4, "Polyst. foam $", 4, 0, ISXFLD, SXMGMX, 10., .1, .1, .1, .1);
211 AliMedium(99, "Air $", 9, 0, ISXFLD, SXMGMX, 10., 1., .1, .1, 10.);
213 // --- Generate explicitly delta rays in aluminium parts ---
214 gMC->Gstpar(idtmed[701], "LOSS", 3.);
215 gMC->Gstpar(idtmed[701], "DRAY", 1.);
218 void AliPHOSv0::StepManager()
221 TClonesArray &lhits = *fHits;
226 if(gMC->CurrentVolID(copy) == fIdSens) {
228 //We are in the sensitive volume
230 gMC->CurrentVolOffID(i+1,copy);
233 gMC->CurrentVolOffID(7,copy);
235 gMC->TrackPosition(p);
236 for(i=0;i<3;++i) hits[i]=p[i];
238 new(lhits[fNhits++]) AliPHOShit(fIshunt,gAlice->CurrentTrack(),vol,hits);