]>
Commit | Line | Data |
---|---|---|
fe4da5cc | 1 | /////////////////////////////////////////////////////////////////////////////// |
2 | // // | |
3 | // Transition Radiation Detector // | |
4 | // This class contains the basic functions for the Transition Radiation // | |
5 | // detector. Functions specific to one particular geometry are // | |
6 | // contained in the derived classes // | |
7 | // // | |
8 | //Begin_Html | |
9 | /* | |
1439f98e | 10 | <img src="picts/AliTRDClass.gif"> |
fe4da5cc | 11 | */ |
12 | //End_Html | |
13 | // // | |
14 | // // | |
15 | /////////////////////////////////////////////////////////////////////////////// | |
16 | ||
17 | #include <TMath.h> | |
fe4da5cc | 18 | #include <TNode.h> |
fe4da5cc | 19 | #include <TPGON.h> |
20 | ||
fe4da5cc | 21 | #include "AliTRD.h" |
22 | #include "AliRun.h" | |
fe4da5cc | 23 | |
d3f347ff | 24 | #include "AliConst.h" |
fe4da5cc | 25 | |
26 | ClassImp(AliTRD) | |
27 | ||
28 | //_____________________________________________________________________________ | |
29 | AliTRD::AliTRD() | |
30 | { | |
31 | // | |
32 | // Default constructor | |
33 | // | |
d3f347ff | 34 | fIshunt = 0; |
35 | fGasMix = 0; | |
36 | fSensSelect = 0; | |
37 | fSensPlane = 0; | |
38 | fSensChamber = 0; | |
39 | fSensSector = 0; | |
fe4da5cc | 40 | } |
41 | ||
42 | //_____________________________________________________________________________ | |
43 | AliTRD::AliTRD(const char *name, const char *title) | |
44 | : AliDetector(name,title) | |
45 | { | |
46 | // | |
47 | // Standard constructor for the TRD | |
48 | // | |
49 | ||
50 | // | |
51 | // Allocate the hit array | |
52 | ||
53 | fHits = new TClonesArray("AliTRDhit", 405); | |
54 | ||
d3f347ff | 55 | fIshunt = 0; |
56 | fGasMix = 0; | |
57 | fSensSelect = 0; | |
58 | fSensPlane = 0; | |
59 | fSensChamber = 0; | |
60 | fSensSector = 0; | |
fe4da5cc | 61 | |
62 | SetMarkerColor(kWhite); | |
63 | } | |
64 | ||
65 | //_____________________________________________________________________________ | |
66 | void AliTRD::AddHit(Int_t track, Int_t *vol, Float_t *hits) | |
67 | { | |
68 | // | |
69 | // Add a hit for the TRD | |
70 | // | |
71 | TClonesArray &lhits = *fHits; | |
72 | new(lhits[fNhits++]) AliTRDhit(fIshunt,track,vol,hits); | |
73 | } | |
74 | ||
75 | //_____________________________________________________________________________ | |
76 | void AliTRD::BuildGeometry() | |
77 | { | |
78 | // | |
79 | // Create the ROOT TNode geometry for the TRD | |
80 | // | |
81 | TNode *Node, *Top; | |
82 | TPGON *pgon; | |
83 | const Int_t kColorTRD = 46; | |
d3f347ff | 84 | |
fe4da5cc | 85 | // Find the top node alice |
86 | Top=gAlice->GetGeometry()->GetNode("alice"); | |
d3f347ff | 87 | |
88 | pgon = new TPGON("S_TRD","TRD","void",0,360,nsect,4); | |
89 | Float_t ff = TMath::Cos(kDegrad * 180 / nsect); | |
90 | Float_t rrmin = rmin / ff; | |
91 | Float_t rrmax = rmax / ff; | |
92 | pgon->DefineSection(0,-zmax1,rrmax,rrmax); | |
93 | pgon->DefineSection(1,-zmax2,rrmin,rrmax); | |
94 | pgon->DefineSection(2, zmax2,rrmin,rrmax); | |
95 | pgon->DefineSection(3, zmax1,rrmax,rrmax); | |
fe4da5cc | 96 | Top->cd(); |
97 | Node = new TNode("TRD","TRD","S_TRD",0,0,0,""); | |
98 | Node->SetLineColor(kColorTRD); | |
99 | fNodes->Add(Node); | |
d3f347ff | 100 | |
fe4da5cc | 101 | } |
102 | ||
103 | //_____________________________________________________________________________ | |
104 | void AliTRD::CreateMaterials() | |
105 | { | |
d3f347ff | 106 | |
fe4da5cc | 107 | // |
108 | // Create the materials for the TRD | |
109 | // Origin Y.Foka | |
110 | // | |
111 | ||
112 | AliMC* pMC = AliMC::GetMC(); | |
113 | ||
114 | Int_t ISXFLD = gAlice->Field()->Integ(); | |
115 | Float_t SXMGMX = gAlice->Field()->Max(); | |
116 | ||
d3f347ff | 117 | // For polyethilene (CH2) |
118 | Float_t ape[2] = { 12., 1. }; | |
119 | Float_t zpe[2] = { 6., 1. }; | |
120 | Float_t wpe[2] = { 1., 2. }; | |
121 | Float_t dpe = 0.95; | |
122 | ||
123 | // For mylar (C5H4O2) | |
124 | Float_t amy[3] = { 12., 1., 16. }; | |
125 | Float_t zmy[3] = { 6., 1., 8. }; | |
126 | Float_t wmy[3] = { 5., 4., 2. }; | |
fe4da5cc | 127 | Float_t dmy = 1.39; |
d3f347ff | 128 | |
129 | // For CO2 | |
130 | Float_t aco[2] = { 12., 16. }; | |
131 | Float_t zco[2] = { 6., 8. }; | |
132 | Float_t wco[2] = { 1., 2. }; | |
133 | Float_t dco = 0.001977; | |
134 | ||
135 | // For water | |
136 | Float_t awa[2] = { 1., 16. }; | |
137 | Float_t zwa[2] = { 1., 8. }; | |
138 | Float_t wwa[2] = { 2., 1. }; | |
139 | Float_t dwa = 1.0; | |
140 | ||
141 | // For isobutane (C4H10) | |
142 | Float_t ais[2] = { 12., 1. }; | |
143 | Float_t zis[2] = { 6., 1. }; | |
144 | Float_t wis[2] = { 4., 10. }; | |
145 | Float_t dis = 0.00267; | |
146 | ||
147 | // For Xe/CO2-gas-mixture | |
148 | // Xe-content of the Xe/CO2-mixture (90% / 10%) | |
149 | Float_t fxc = .90; | |
150 | // Xe-content of the Xe/Isobutane-mixture (97% / 3%) | |
151 | Float_t fxi = .97; | |
fe4da5cc | 152 | Float_t dxe = .005858; |
153 | ||
d3f347ff | 154 | // General tracking parameter |
fe4da5cc | 155 | Float_t tmaxfd = -10.; |
156 | Float_t stemax = -1e10; | |
d3f347ff | 157 | Float_t deemax = -0.1; |
158 | Float_t epsil = 1e-4; | |
159 | Float_t stmin = -0.001; | |
fe4da5cc | 160 | |
161 | Float_t absl, radl, d, buf[1]; | |
162 | Float_t agm[2], dgm, zgm[2], wgm[2]; | |
d3f347ff | 163 | Int_t nbuf; |
fe4da5cc | 164 | |
d3f347ff | 165 | ////////////////////////////////////////////////////////////////////////// |
fe4da5cc | 166 | // Define Materials |
d3f347ff | 167 | ////////////////////////////////////////////////////////////////////////// |
168 | ||
169 | AliMaterial( 1, "Al $", 26.98, 13.0, 2.7 , 8.9 , 37.2); | |
170 | AliMaterial( 2, "Air$", 14.61, 7.3, 0.001205, 30420.0 , 67500.0); | |
171 | AliMaterial( 4, "Xe $", 131.29, 54.0, dxe , 1447.59, 0.0); | |
172 | AliMaterial( 5, "Cu $", 63.54, 29.0, 8.96 , 1.43, 14.8); | |
173 | AliMaterial( 6, "C $", 12.01, 6.0, 2.265 , 18.8 , 74.4); | |
174 | AliMaterial(12, "G10$", 20.00, 10.0, 1.7 , 19.4 , 999.0); | |
175 | ||
176 | // Mixtures | |
177 | AliMixture(3, "Polyethilene$", ape, zpe, dpe, -2, wpe); | |
178 | AliMixture(7, "Mylar$", amy, zmy, dmy, -3, wmy); | |
179 | AliMixture(8, "CO2$", aco, zco, dco, -2, wco); | |
180 | AliMixture(9, "Isobutane$", ais, zis, dis, -2, wis); | |
181 | AliMixture(13, "Water$" , awa, zwa, dwa, -2, wwa); | |
182 | ||
183 | // Gas mixtures | |
fe4da5cc | 184 | char namate[21]; |
d3f347ff | 185 | // Xe/CO2-mixture |
186 | // Get properties of Xe | |
fe4da5cc | 187 | pMC->Gfmate((*fIdmate)[4], namate, agm[0], zgm[0], d, radl, absl, buf, nbuf); |
d3f347ff | 188 | // Get properties of CO2 |
fe4da5cc | 189 | pMC->Gfmate((*fIdmate)[8], namate, agm[1], zgm[1], d, radl, absl, buf, nbuf); |
d3f347ff | 190 | // Create gas mixture |
191 | wgm[0] = fxc; | |
192 | wgm[1] = 1. - fxc; | |
fe4da5cc | 193 | dgm = wgm[0] * dxe + wgm[1] * dco; |
d3f347ff | 194 | AliMixture(10, "Gas mixture 1$", agm, zgm, dgm, 2, wgm); |
195 | // Xe/Isobutane-mixture | |
196 | // Get properties of Xe | |
197 | pMC->Gfmate((*fIdmate)[4], namate, agm[0], zgm[0], d, radl, absl, buf, nbuf); | |
198 | // Get properties of Isobutane | |
199 | pMC->Gfmate((*fIdmate)[9], namate, agm[1], zgm[1], d, radl, absl, buf, nbuf); | |
200 | // Create gas mixture | |
201 | wgm[0] = fxi; | |
202 | wgm[1] = 1. - fxi; | |
203 | dgm = wgm[0] * dxe + wgm[1] * dis; | |
204 | AliMixture(11, "Gas mixture 2$", agm, zgm, dgm, 2, wgm); | |
205 | ||
206 | ////////////////////////////////////////////////////////////////////////// | |
fe4da5cc | 207 | // Tracking Media Parameters |
d3f347ff | 208 | ////////////////////////////////////////////////////////////////////////// |
209 | ||
210 | // Al Frame | |
211 | AliMedium(1301, "Al Frame$", 1, 0, ISXFLD, SXMGMX | |
212 | , tmaxfd, stemax, deemax, epsil, stmin); | |
213 | // Air | |
214 | AliMedium(1302, "Air$", 2, 0, ISXFLD, SXMGMX | |
215 | , tmaxfd, stemax, deemax, epsil, stmin); | |
216 | // Polyethilene | |
217 | AliMedium(1303, "Radiator$", 3, 0, ISXFLD, SXMGMX | |
218 | , tmaxfd, stemax, deemax, epsil, stmin); | |
219 | // Xe | |
220 | AliMedium(1304, "Xe$", 4, 1, ISXFLD, SXMGMX | |
221 | , tmaxfd, stemax, deemax, epsil, stmin); | |
222 | // Cu pads | |
223 | AliMedium(1305, "Padplane$", 5, 1, ISXFLD, SXMGMX | |
224 | , tmaxfd, stemax, deemax, epsil, stmin); | |
225 | // Fee + cables | |
226 | AliMedium(1306, "Readout$", 1, 0, ISXFLD, SXMGMX | |
227 | , tmaxfd, stemax, deemax, epsil, stmin); | |
228 | // C frame | |
229 | AliMedium(1307, "C Frame$", 6, 0, ISXFLD, SXMGMX | |
230 | , tmaxfd, stemax, deemax, epsil, stmin); | |
231 | // Mylar foils | |
232 | AliMedium(1308, "Mylar$", 7, 0, ISXFLD, SXMGMX | |
233 | , tmaxfd, stemax, deemax, epsil, stmin); | |
234 | if (fGasMix == 1) { | |
235 | // Gas-mixture (Xe/CO2) | |
236 | AliMedium(1309, "Gas-mix$", 10, 1, ISXFLD, SXMGMX | |
237 | , tmaxfd, stemax, deemax, epsil, stmin); | |
238 | } | |
239 | else { | |
240 | // Gas-mixture (Xe/Isobutane) | |
241 | AliMedium(1309, "Gas-mix$", 11, 1, ISXFLD, SXMGMX | |
242 | , tmaxfd, stemax, deemax, epsil, stmin); | |
243 | } | |
244 | // Nomex-honeycomb (use carbon for the time being) | |
245 | AliMedium(1310, "Nomex$", 6, 0, ISXFLD, SXMGMX | |
246 | , tmaxfd, stemax, deemax, epsil, stmin); | |
247 | // Kapton foils (use Mylar for the time being) | |
248 | AliMedium(1311, "Kapton$", 7, 0, ISXFLD, SXMGMX | |
249 | , tmaxfd, stemax, deemax, epsil, stmin); | |
250 | // Gas-filling of the radiator | |
251 | AliMedium(1312, "CO2$", 8, 0, ISXFLD, SXMGMX | |
252 | , tmaxfd, stemax, deemax, epsil, stmin); | |
253 | // G10-plates | |
254 | AliMedium(1313, "G10-plates$",12, 0, ISXFLD, SXMGMX | |
255 | , tmaxfd, stemax, deemax, epsil, stmin); | |
256 | // Cooling water | |
257 | AliMedium(1314, "Water$", 13, 0, ISXFLD, SXMGMX | |
258 | , tmaxfd, stemax, deemax, epsil, stmin); | |
259 | ||
fe4da5cc | 260 | } |
261 | ||
262 | //_____________________________________________________________________________ | |
263 | Int_t AliTRD::DistancetoPrimitive(Int_t , Int_t ) | |
264 | { | |
265 | // | |
266 | // Distance between the mouse and the TRD detector on the screen | |
267 | // Dummy routine | |
268 | // | |
269 | return 9999; | |
270 | } | |
271 | ||
272 | //_____________________________________________________________________________ | |
273 | void AliTRD::Init() | |
274 | { | |
275 | // | |
276 | // Initialise the TRD detector after the geometry has been created | |
277 | // | |
278 | Int_t i; | |
279 | // | |
280 | printf("\n"); | |
281 | for(i=0;i<35;i++) printf("*"); | |
282 | printf(" TRD_INIT "); | |
283 | for(i=0;i<35;i++) printf("*"); | |
284 | printf("\n"); | |
d3f347ff | 285 | |
fe4da5cc | 286 | // Here the TRD initialisation code (if any!) |
d3f347ff | 287 | if (fGasMix == 1) |
288 | printf(" Gas Mixture: 90%% Xe + 10%% CO2\n"); | |
289 | else | |
290 | printf(" Gas Mixture: 97%% Xe + 3%% Isobutane\n"); | |
291 | if (fSensPlane) | |
292 | printf(" Only plane %d is sensitive\n",fSensPlane); | |
293 | if (fSensChamber) | |
294 | printf(" Only chamber %d is sensitive\n",fSensChamber); | |
295 | if (fSensSector) | |
296 | printf(" Only sector %d is sensitive\n",fSensSector); | |
297 | ||
fe4da5cc | 298 | for(i=0;i<80;i++) printf("*"); |
299 | printf("\n"); | |
300 | } | |
301 | ||
d3f347ff | 302 | //_____________________________________________________________________________ |
b060c36f | 303 | void AliTRD::SetGasMix(Int_t imix) |
d3f347ff | 304 | { |
305 | ||
306 | if ((imix < 0) || (imix > 1)) { | |
307 | printf("Wrong input value: %d\n",imix); | |
308 | printf("Use standard setting\n"); | |
309 | fGasMix = 0; | |
310 | return; | |
311 | } | |
312 | ||
313 | fGasMix = imix; | |
314 | ||
315 | } | |
316 | ||
317 | //_____________________________________________________________________________ | |
b060c36f | 318 | void AliTRD::SetSensPlane(Int_t iplane) |
d3f347ff | 319 | { |
320 | ||
321 | if ((iplane < 0) || (iplane > 6)) { | |
322 | printf("Wrong input value: %d\n",iplane); | |
323 | printf("Use standard setting\n"); | |
324 | fSensPlane = 0; | |
325 | fSensSelect = 0; | |
326 | return; | |
327 | } | |
328 | ||
329 | fSensSelect = 1; | |
330 | fSensPlane = iplane; | |
331 | ||
332 | } | |
333 | ||
334 | //_____________________________________________________________________________ | |
b060c36f | 335 | void AliTRD::SetSensChamber(Int_t ichamber) |
d3f347ff | 336 | { |
337 | ||
338 | if ((ichamber < 0) || (ichamber > 5)) { | |
339 | printf("Wrong input value: %d\n",ichamber); | |
340 | printf("Use standard setting\n"); | |
341 | fSensChamber = 0; | |
342 | fSensSelect = 0; | |
343 | return; | |
344 | } | |
345 | ||
346 | fSensSelect = 1; | |
347 | fSensChamber = ichamber; | |
348 | ||
349 | } | |
350 | ||
351 | //_____________________________________________________________________________ | |
b060c36f | 352 | void AliTRD::SetSensSector(Int_t isector) |
d3f347ff | 353 | { |
354 | ||
355 | if ((isector < 0) || (isector > 18)) { | |
356 | printf("Wrong input value: %d\n",isector); | |
357 | printf("Use standard setting\n"); | |
358 | fSensSector = 0; | |
359 | fSensSelect = 0; | |
360 | return; | |
361 | } | |
362 | ||
363 | fSensSelect = 1; | |
364 | fSensSector = isector; | |
365 | ||
366 | } | |
367 | ||
fe4da5cc | 368 | ClassImp(AliTRDhit) |
369 | ||
370 | //_____________________________________________________________________________ | |
371 | AliTRDhit::AliTRDhit(Int_t shunt, Int_t track, Int_t *vol, Float_t *hits): | |
372 | AliHit(shunt, track) | |
373 | { | |
374 | // | |
375 | // Create a TRD hit | |
376 | // | |
377 | ||
378 | // | |
379 | // Store volume hierarchy | |
380 | fSector = vol[0]; | |
381 | fChamber = vol[1]; | |
382 | fPlane = vol[2]; | |
383 | // | |
384 | // Store position and charge | |
385 | fX = hits[0]; | |
386 | fY = hits[1]; | |
387 | fZ = hits[2]; | |
388 | fQ = hits[3]; | |
389 | } |