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ePHENIXRICHConstruction.cc
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1 // $$Id: ePHENIXRICHConstruction.cc,v 1.7 2014/05/01 19:02:45 phnxbld Exp $$
2 
11 #include "ePHENIXRICHConstruction.h"
12 
13 #include "PHG4RICHDisplayAction.h"
14 
15 #include <g4main/PHG4DisplayAction.h> // for PHG4DisplayAction
16 #include <g4main/PHG4Subsystem.h> // for PHG4Subsystem
17 
18 #include <TSystem.h>
19 
20 #include <Geant4/G4Cons.hh>
21 #include <Geant4/G4DisplacedSolid.hh> // for G4DisplacedSolid
22 #include <Geant4/G4IntersectionSolid.hh>
23 #include <Geant4/G4LogicalSkinSurface.hh>
24 #include <Geant4/G4LogicalVolume.hh>
25 #include <Geant4/G4Material.hh>
26 #include <Geant4/G4MaterialPropertiesTable.hh> // for G4MaterialProperties...
27 #include <Geant4/G4OpticalSurface.hh>
28 #include <Geant4/G4Orb.hh>
29 #include <Geant4/G4PVPlacement.hh>
30 #include <Geant4/G4PhysicalConstants.hh> // for pi
31 #include <Geant4/G4Sphere.hh>
32 #include <Geant4/G4String.hh> // for G4String
33 #include <Geant4/G4SubtractionSolid.hh>
34 #include <Geant4/G4SurfaceProperty.hh> // for dielectric_metal
35 #include <Geant4/G4SystemOfUnits.hh> // for cm, eV, um
36 #include <Geant4/G4ThreeVector.hh> // for G4ThreeVector
37 #include <Geant4/G4Transform3D.hh> // for G4RotateX3D, G4Rotat...
38 #include <Geant4/G4Tubs.hh>
39 #include <Geant4/G4Types.hh> // for G4double, G4int
40 #include <Geant4/G4VPhysicalVolume.hh> // for G4VPhysicalVolume
41 #include <Geant4/G4NistManager.hh>
42 
43 #include <cassert>
44 #include <cmath>
45 #include <iostream>
46 #include <sstream>
47 #include <string> // for operator+, operator<<
48 #include <boost/stacktrace.hpp>
49 
50 class G4VSolid;
51 
52 using namespace std;
53 using namespace ePHENIXRICH;
54 
55 ePHENIXRICHConstruction::ePHENIXRICHConstruction(PHG4Subsystem *subsys)
56  : m_DisplayAction(dynamic_cast<PHG4RICHDisplayAction *>(subsys->GetDisplayAction()))
57  , overlapcheck_rich(false)
58 
59 {
60 }
61 ePHENIXRICHConstruction::ePHENIXRICHConstruction(PHG4Subsystem *subsys, const RICH_Geometry &g)
62  : geom(g)
63  , m_DisplayAction(dynamic_cast<PHG4RICHDisplayAction *>(subsys->GetDisplayAction()))
64  , overlapcheck_rich(false)
65 {
66 }
67 
68 G4LogicalVolume *ePHENIXRICHConstruction::RegisterLogicalVolume(G4LogicalVolume *v)
69 {
70  if (!v)
71  {
72  std::cout << "ePHENIXRICHConstruction::RegisterVolume - Error - invalid volume!"
73  << std::endl;
74  return v;
75  }
76  if (map_log_vol.find(v->GetName()) != map_log_vol.end())
77  {
78  std::cout << "ePHENIXRICHConstruction::RegisterVolume - Warning - replacing "
79  << v->GetName() << std::endl;
80  }
81 
82  map_log_vol[v->GetName()] = v;
83 
84  return v;
85 }
86 
87 G4PVPlacement *ePHENIXRICHConstruction::RegisterPhysicalVolume(G4PVPlacement *v)
88 {
89  if (!v)
90  {
91  std::cout << "ePHENIXRICHConstruction::RegisterPhysicalVolume - Error - invalid volume!"
92  << std::endl;
93  return v;
94  }
95 
96  phy_vol_idx_t id(v->GetName(), v->GetCopyNo());
97 
98  if (map_phy_vol.find(id) != map_phy_vol.end())
99  {
100  std::cout << "ePHENIXRICHConstruction::RegisterPhysicalVolume - Warning - replacing "
101  << v->GetName() << "[" << v->GetCopyNo() << "]" << std::endl;
102  }
103 
104  map_phy_vol[id] = v;
105  return v;
106 }
107 
108 G4LogicalVolume *
109 ePHENIXRICHConstruction::Construct_RICH(G4LogicalVolume *WorldLog)
110 {
111  // -- Logical volume:
112  G4VSolid *RICHOutSphereBoundary = new G4Orb("RICHOutSphereBoundary",
113  geom.get_R_max());
114  G4VSolid *RICHOutSphereBoundary_place = new G4DisplacedSolid("RICHOutSphereBoundary_place", RICHOutSphereBoundary, 0,
115  G4ThreeVector(0, geom.get_R_shift(), geom.get_z_shift()));
116 
117  G4VSolid *RICHInnerSphereBoundary = new G4Orb("RICHInnerSphereBoundary",
118  geom.get_R_frontwindow());
119  G4VSolid *RICHInnerSphereBoundary_place = new G4DisplacedSolid("RICHInnerSphereBoundary_place",
120  RICHInnerSphereBoundary,
121  0,
122  G4ThreeVector(0,
123  geom.get_R_shift() * geom.get_frontwindow_DisplaceRatio(),
124  geom.get_z_shift() * geom.get_frontwindow_DisplaceRatio()));
125 
126  G4VSolid *RICHConeBoundary = new G4Cons("RICHConeBoundary", //
127  geom.get_R_beam_pipe_front(),
128  geom.get_z_shift() / 2 * std::tan(2 * std::atan(std::exp(-geom.get_min_eta()))), // G4double pRmin1, G4double pRmax1,
129  geom.get_R_beam_pipe_back(),
130  geom.get_cone_size_z() * std::tan(2 * std::atan(std::exp(-geom.get_min_eta()))), // G4double pRmin2, G4double pRmax2,
131  (geom.get_cone_size_z() - (geom.get_z_shift() / 2)) / 2, // G4double pDz,
132  0, 2 * pi // G4double pSPhi, G4double pDPhi
133  );
134  G4VSolid *RICHConeBoundary_place = new G4DisplacedSolid("RICHConeBoundary_place",
135  RICHConeBoundary,
136  0,
137  G4ThreeVector(
138  0,
139  0,
140  (geom.get_cone_size_z() - (geom.get_z_shift() / 2)) / 2 + (geom.get_z_shift() / 2)));
141 
142  G4VSolid *RICHSecBoundary = new G4Tubs("RICHSecBoundary", //
143  0, // G4double pRMin,
144  geom.get_cone_size_z(), // G4double pRMax,
145  geom.get_cone_size_z(), // G4double pDz,
146  pi / 2 - pi / geom.get_N_RICH_Sector(), // G4double pSPhi,
147  2 * pi / geom.get_N_RICH_Sector() // G4double pDPhi
148  );
149 
150  G4VSolid *RICHSphereBoundary = new G4SubtractionSolid("RICHSphereBoundary",
151  RICHOutSphereBoundary_place, RICHInnerSphereBoundary_place);
152  // G4VSolid *RICHSecBox_ConeSphere = new G4IntersectionSolid(
153  // "RICHSecBox_ConeSphere", RICHSphereBoundary,
154  // RICHConeBoundary_place);
155  G4VSolid *RICHSecBox_ConeSec = new G4IntersectionSolid("RICHSecBox_ConeSec",
156  RICHSecBoundary, RICHConeBoundary_place);
157 
158  // RICH sector
159  G4VSolid *RICHSecBox = new G4IntersectionSolid("RICHSecBox",
160  RICHSecBox_ConeSec, RICHSphereBoundary);
161 
162  G4LogicalVolume *RICHSecLog = new G4LogicalVolume(RICHSecBox,
163  GetDetectorMaterial(geom.get_RICH_gas_mat()), "RICHSecLogical",
164  0, 0, 0);
165  RegisterLogicalVolume(RICHSecLog);
166 
167  for (G4int sec = 0; sec < geom.get_N_RICH_Sector(); sec++)
168  {
169  G4RotateZ3D sec_rot(2 * pi / geom.get_N_RICH_Sector() * sec);
170 
171  // Insert sector volumes into sector set
172  sector_vec.insert(RegisterPhysicalVolume(new G4PVPlacement(sec_rot, RICHSecLog, "RICHSecPhysical", WorldLog,
173  false, sec, overlapcheck_rich)));
174  }
175  // CLHEP::HepRotationZ sec_rot(0);
176  // G4RotationMatrix g4_sec_rot(sec_rot);
177  // new G4PVPlacement(transform1, "RICHSecPhysical", RICHSecLog, WorldPhys,
178  // false, 0);
179 
180  //RICH mirror
181  // LHCb website: 3mm thick Be base + 0.3mm glass surface layer coated with Al.
182  // LHCb TDR: The mirrors are made of polished 6mm-thick glass coated by vacuum
183  // deposition with 900 nm of aluminium and overcoated with 200 nm of quartz.
184  G4VSolid *RICHMirrorSphereBoundary = new G4Sphere("RICHMirrorSphereBoundary", //
185  geom.get_R_mirror_ref(),
186  geom.get_R_mirror_ref() + geom.get_dR_mirror(), // G4double pRmin, G4double pRmax,
187  0, 2 * pi, // G4double pSPhi, G4double pDPhi,
188  0, pi // G4double pSTheta, G4double pDTheta
189  );
190  G4VSolid *RICHMirrorSphereBoundary_place = new G4DisplacedSolid("RICHMirrorSphereBoundary_place", RICHMirrorSphereBoundary, 0,
191  G4ThreeVector(0, geom.get_R_shift(), geom.get_z_shift()));
192  G4VSolid *RICHMirror = new G4IntersectionSolid("RICHMirror",
193  RICHSecBox_ConeSec, RICHMirrorSphereBoundary_place);
194  G4LogicalVolume *RICHMirrorLog = new G4LogicalVolume(RICHMirror,
195  GetDetectorMaterial(geom.get_RICH_Mirror_mat()),
196  "RICHMirrorLog");
197  RegisterPhysicalVolume(new G4PVPlacement(0, G4ThreeVector(), RICHMirrorLog, "RICHMirrorPhysical",
198  RICHSecLog, false, 0, overlapcheck_rich));
199  RegisterLogicalVolume(RICHMirrorLog);
200 
201  // RICH mirror Optical Surface
202  //
203  G4LogicalSkinSurface *RICHMirrorSurface = new G4LogicalSkinSurface("RICHMirrorSurface",
204  RICHMirrorLog,
205  geom.get_RICH_Mirror_OpticalSurface());
206  RICHMirrorSurface->GetName(); // only to avoid error message for unused object
207 
208  //RICH gas vessel window - back
209  //LHCb TDR: The frame will be sealed to contain the C4F10 gas radiator. The vacuum chamber acts as part of the boundary to the gas volume.
210  // Kapton foils of 150um thickness and 400 mm diameter will be glued to flanges on the vacuum chamber
211  G4VSolid *RICHBackWindowSphereBoundary = new G4Sphere("RICHBackWindowSphereBoundary", //
212  geom.get_R_mirror_ref() + geom.get_dR_mirror() + geom.get_dR_mirror_spt(),
213  geom.get_R_mirror_ref() + geom.get_dR_mirror() + geom.get_dR_mirror_spt() + geom.get_dR_backwindow(), // G4double pRmin, G4double pRmax,
214  0, 2 * pi, // G4double pSPhi, G4double pDPhi,
215  0, pi // G4double pSTheta, G4double pDTheta
216  );
217  G4VSolid *RICHBackWindowSphereBoundary_place = new G4DisplacedSolid("RICHBackWindowSphereBoundary_place", RICHBackWindowSphereBoundary,
218  0, G4ThreeVector(0, geom.get_R_shift(), geom.get_z_shift()));
219  G4VSolid *RICHBackWindow = new G4IntersectionSolid("RICHBackWindow",
220  RICHSecBox_ConeSec, RICHBackWindowSphereBoundary_place);
221  G4LogicalVolume *RICHBackWindowLog = new G4LogicalVolume(RICHBackWindow,
222  GetDetectorMaterial(geom.get_RICH_Gas_Window_mat()),
223  "RICHBackWindowLog");
224  RegisterLogicalVolume(RICHBackWindowLog);
225  RegisterPhysicalVolume(new G4PVPlacement(0, G4ThreeVector(), RICHBackWindowLog,
226  "RICHBackWindowPhysical", RICHSecLog, false, 0, overlapcheck_rich));
227 
228  //RICH gas vessel window - front
229  //LHCb TDR: The frame will be sealed to contain the C4F10 gas radiator. The vacuum chamber acts as part of the boundary to the gas volume.
230  // Kapton foils of 150um thickness and 400 mm diameter will be glued to flanges on the vacuum chamber
231  G4VSolid *RICHFrontWindowSphereBoundary = new G4Sphere("RICHFrontWindowSphereBoundary", //
232  geom.get_R_frontwindow(),
233  geom.get_R_frontwindow() + geom.get_dR_frontwindow(), // G4double pRmin, G4double pRmax,
234  0, 2 * pi, // G4double pSPhi, G4double pDPhi,
235  0, pi // G4double pSTheta, G4double pDTheta
236  );
237  G4VSolid *RICHFrontWindowSphereBoundary_place = new G4DisplacedSolid("RICHFrontWindowSphereBoundary_place",
238  RICHFrontWindowSphereBoundary,
239  0,
240  G4ThreeVector(0,
241  geom.get_R_shift() * geom.get_frontwindow_DisplaceRatio(),
242  geom.get_z_shift() * geom.get_frontwindow_DisplaceRatio()));
243  G4VSolid *RICHFrontWindow = new G4IntersectionSolid("RICHFrontWindow",
244  RICHSecBox_ConeSec, RICHFrontWindowSphereBoundary_place);
245  G4LogicalVolume *RICHFrontWindowLog = new G4LogicalVolume(RICHFrontWindow,
246  GetDetectorMaterial(geom.get_RICH_Gas_Window_mat()),
247  "RICHFrontWindowLog");
248  RegisterLogicalVolume(RICHFrontWindowLog);
249  RegisterPhysicalVolume(new G4PVPlacement(0, G4ThreeVector(), RICHFrontWindowLog,
250  "RICHFrontWindowPhysical", RICHSecLog, false, 0, overlapcheck_rich));
251 
252  // photon detector - HBD
253  G4LogicalVolume *RICHHBDLog = Construct_HBD(RICHSecLog);
254 
255  GetDisplayAction()->AddVolume(RICHSecLog, "Sector");
256 
257  GetDisplayAction()->AddVolume(RICHMirrorLog, "Mirror");
258 
259  GetDisplayAction()->AddVolume(RICHBackWindowLog, "Window");
260  GetDisplayAction()->AddVolume(RICHFrontWindowLog, "Window");
261 
262  GetDisplayAction()->AddVolume(RICHHBDLog, "HBD");
263 
264 // if you want this printout - put some verbosity around it
265  // std::cout << "ePHENIXRICHConstruction::Construct_RICH - " << map_log_vol.size()
266  // << " logical volume constructed" << std::endl;
267  // std::cout << "ePHENIXRICHConstruction::Construct_RICH - " << map_phy_vol.size()
268  // << " physical volume constructed" << std::endl;
269 
270  return WorldLog;
271 }
272 
273 G4LogicalVolume *
274 ePHENIXRICHConstruction::Construct_HBD(G4LogicalVolume *RICHSecLog)
275 {
276  const double HBD_thickness = geom.get_HBD_thickness();
277  const int n_GEM_layers = geom.get_n_GEM_layers();
278 
279  assert(
280  HBD_thickness < geom.get_dR_frontwindow_shrink() - geom.get_dR_frontwindow());
281  // depth check
282 
283  G4VSolid *RICHHBDBox = new G4Cons("RICHHBDBox", //
284  0, geom.get_RZ_Seg1_HBD() + geom.get_RZ_Seg2_HBD(), // G4double pRmin1, G4double pRmax1,
285  0, geom.get_RZ_Seg1_HBD() + geom.get_RZ_Seg2_HBD(), // G4double pRmin2, G4double pRmax2,
286  HBD_thickness / 2, // G4double pDz,
287  -geom.get_half_angle_HBD() + pi / 2, 2 * geom.get_half_angle_HBD() // G4double pSPhi, G4double pDPhi
288  );
289 
290  G4LogicalVolume *RICHHBDLog = new G4LogicalVolume(RICHHBDBox,
291  GetDetectorMaterial(geom.get_RICH_gas_mat()), "RICHHBDLog");
292  RegisterLogicalVolume(RICHHBDLog);
293 
294  G4Transform3D transform1 = G4Translate3D(0, geom.get_R_Tip_HBD(),
295  geom.get_Z_Tip_HBD()) *
296  G4RotateX3D(-geom.get_Rotation_HBD()) * G4RotateY3D(pi) * G4TranslateZ3D(HBD_thickness / 2);
297  // G4Transform3D transform1 = G4TranslateZ3D(HBD_thickness / 2);
298 
299  RegisterPhysicalVolume(new G4PVPlacement(transform1, RICHHBDLog, "RICHHBDPhysical", RICHSecLog,
300  false, 0, overlapcheck_rich));
301 
302  // Internal HBD structure
303  // From doi:10.1016/j.nima.2011.04.015
304  // Component Material X0 (cm) Thickness (cm) Area (%) Rad. Length (%)
305  double current_z = -HBD_thickness / 2;
306 
307  // Mesh SS 1.67 0.003 11.5 0.021
308  // exclude for now to let all potons pass to the top GEM foil
309  //G4LogicalVolume* HBDMeshLog = Construct_HBD_Layers(RICHHBDLog, "Mesh", "Steel", current_z,
310  // 0.003 * cm * 11.5e-2);
311  current_z += 0.003 * cm;
312 
313  // photon detector - photocathode is CsI coating on top layer (surface)
314  //
315  G4LogicalSkinSurface *RICHPhotocathodeSurface;
316 
317  // GEM frames FR4 17.1 0.15x4 6.5 0.228 ; 6.5 is the percentage of the area covered by material.
318  // exclude for now to let all potons pass to the top GEM foil
319  //Construct_HBD_Layers(RICHHBDLog, "Frame0", "G10", current_z,
320  // 0.15 * cm * 6.5e-2);
321  current_z += 0.15 * cm;
322 
323  for (int gem = 1; gem <= n_GEM_layers; gem++)
324  {
325  stringstream sid;
326  sid << gem;
327 
328  // GEM Copper 1.43 0.0005x6 64 0.134
329  G4LogicalVolume *GemTopLog = Construct_HBD_Layers(RICHHBDLog,
330  G4String("GEMFrontCu") + G4String(sid.str()), "G4_Cu",
331  current_z, 0.0005 * cm * 64e-2);
332  current_z += 0.0005 * cm;
333 
334  // top GEM has CsI coating for photon detection
335  if (gem == 1)
336  {
337  RICHPhotocathodeSurface = new G4LogicalSkinSurface("RICHPhotocathodeSurface", GemTopLog, geom.get_RICH_Photocathode_OpticalSurface());
338  RICHPhotocathodeSurface->GetName(); // avoid error due to unused object
339  }
340 
341  // GEM Kapton 28.6 0.005x3 64 0.034
342  Construct_HBD_Layers(RICHHBDLog,
343  G4String("GEMKapton") + G4String(sid.str()), "G4_KAPTON",
344  current_z, 0.005 * cm * 64e-2);
345  current_z += 0.005 * cm;
346 
347  // GEM Copper 1.43 0.0005x6 64 0.134
348  Construct_HBD_Layers(RICHHBDLog,
349  G4String("GEMBackCu") + G4String(sid.str()), "G4_Cu", current_z,
350  0.0005 * cm * 64e-2);
351  current_z += 0.0005 * cm;
352 
353  // GEM frames FR4 17.1 0.15x4 6.5 0.228
354  Construct_HBD_Layers(RICHHBDLog,
355  G4String("Frame") + G4String(sid.str()), "G10", current_z,
356  0.15 * cm * 6.5e-2);
357  current_z += 0.15 * cm;
358  }
359 
360  // PCB Kapton 28.6 0.005 100 0.017
361  Construct_HBD_Layers(RICHHBDLog, G4String("PCBKapton"), "G4_KAPTON",
362  current_z, 0.005 * cm * 100e-2);
363  current_z += 0.005 * cm;
364 
365  // PCB Copper 1.43 0.0005 80 0.028
366  Construct_HBD_Layers(RICHHBDLog, G4String("PCBCu"), "G4_Cu", current_z,
367  0.0005 * cm * 80e-2);
368  current_z += 0.0005 * cm;
369 
370  // Facesheet FR4 17.1 0.025x2 100 0.292
371  Construct_HBD_Layers(RICHHBDLog, "Facesheet", "G10", current_z,
372  0.025 * 2 * cm * 100e-2);
373  current_z += 0.025 * 2 * cm;
374 
375  // Panel core Honeycomb 8170 1.905 100 0.023 <- very thin-X0 stuff, ignore
376 
377  // Total vessel 0.82
378  // Readout
379  // Readout board FR4/copper 17.1/1.43 0.05/0.001 100 0.367
380  Construct_HBD_Layers(RICHHBDLog, G4String("ReadoutFR4"), "G10", current_z,
381  0.05 * cm * 100e-2);
382  current_z += 0.05 * cm;
383  Construct_HBD_Layers(RICHHBDLog, G4String("ReadoutCu"), "G4_Cu", current_z,
384  0.001 * cm * 100e-2);
385  current_z += 0.001 * cm;
386 
387  // Preamps + sockets Copper 1.43 0.0005 100 0.66
388  // Total readout 1.03
389  Construct_HBD_Layers(RICHHBDLog, G4String("SocketsCu"), "G4_Cu", current_z,
390  0.0005 * cm * 100e-2);
391  current_z += 0.0005 * cm;
392 
393  assert(current_z < HBD_thickness / 2);
394  //boundary check
395 
396  return RICHHBDLog;
397 }
398 
399 G4LogicalVolume *
400 ePHENIXRICHConstruction::Construct_HBD_Layers(G4LogicalVolume *RICHHBDLog,
401  const G4String name, const G4String material, const double start_z,
402  const double thickness)
403 {
404  G4VSolid *box = new G4Cons(G4String("RICHHBD") + name + G4String("Box"), //
405  0, geom.get_RZ_Seg1_HBD() + geom.get_RZ_Seg2_HBD(), // G4double pRmin1, G4double pRmax1,
406  0, geom.get_RZ_Seg1_HBD() + geom.get_RZ_Seg2_HBD(), // G4double pRmin2, G4double pRmax2,
407  thickness / 2, // G4double pDz,
408  -geom.get_half_angle_HBD() + pi / 2, 2 * geom.get_half_angle_HBD() // G4double pSPhi, G4double pDPhi
409  );
410 
411  G4LogicalVolume *Log = new G4LogicalVolume(box,
412  GetDetectorMaterial(material), //
413  G4String("RICHHBD") + name + G4String("Log"));
414  RegisterLogicalVolume(Log);
415 
416  RegisterPhysicalVolume(new G4PVPlacement(0, G4ThreeVector(0, 0, start_z + thickness / 2), Log,
417  G4String("RICHHBD") + name + G4String("Physical"), RICHHBDLog,
418  false, 0, overlapcheck_rich));
419 
420  return Log;
421 }
422 
423 void RICH_Geometry::SetDefault()
424 {
425  N_RICH_Sector = 8;
426  min_eta = 1;
427  R_beam_pipe_front = 3 * cm;
428  R_beam_pipe_back = 3 * cm;
429  z_shift = 100 * cm;
430  R_shift = 40 * cm;
431  frontwindow_DisplaceRatio = .85; // Displace R,Z and radius simultainously
432  dR_frontwindow_shrink = 2 * cm;
433  R_mirror_ref = 200 * cm;
434  dR_mirror = 0.6 * cm;
435  dR_mirror_spt = 1.4 * cm;
436  dR_backwindow = 150 * um;
437  dR_frontwindow = 150 * um;
438 
439  HBD_thickness = 1.5 * cm;
440  n_GEM_layers = 5;
441 
442  RICH_gas_mat = "CF4";
443  RICH_Mirror_mat = "G4_Pyrex_Glass";
444  RICH_Gas_Window_mat = "G4_KAPTON";
445 }
446 
447 void RICH_Geometry::CreateOpticalSurfaces()
448 {
449  // Mirror
450  //
451  delete RICH_Mirror_OpticalSurface;
452  RICH_Mirror_OpticalSurface = new G4OpticalSurface("RICHMirrorSurfaceOptical");
453 
454  const G4int NUM = 2;
455 
456  G4double pp[NUM] = {2.038 * eV, 4.144 * eV};
457  G4double rindex[NUM] = {1.4, 1.4};
458  G4double reflectivity[NUM] = {1.0, 1.0};
459  G4double efficiency[NUM] = {0.0, 0.0};
460 
461  G4MaterialPropertiesTable *RICH_Mirror_OpticalSurface_SMPT = new G4MaterialPropertiesTable();
462 
463  RICH_Mirror_OpticalSurface_SMPT->AddProperty("RINDEX", pp, rindex, NUM);
464  RICH_Mirror_OpticalSurface_SMPT->AddProperty("REFLECTIVITY", pp, reflectivity, NUM);
465  RICH_Mirror_OpticalSurface_SMPT->AddProperty("EFFICIENCY", pp, efficiency, NUM);
466 
467  RICH_Mirror_OpticalSurface->SetType(dielectric_metal);
468  RICH_Mirror_OpticalSurface->SetModel(glisur);
469  RICH_Mirror_OpticalSurface->SetFinish(polished);
470 
471  // Photocathode
472  //
473  RICH_Photocathode_OpticalSurface = new G4OpticalSurface("RICH_Photocathode_OpticalSurface", glisur, polished, dielectric_metal);
474 
475  G4double photocath_EPHOTON[2] = {1., 1000.};
476  G4double photocath_EFF[2] = {1., 1.};
477  G4double photocath_REFL[2] = {0., 0.};
478 
479  G4MaterialPropertiesTable *RICH_Photocathode_OpticalSurface_MPT = new G4MaterialPropertiesTable();
480  RICH_Photocathode_OpticalSurface_MPT->AddProperty("EFFICIENCY", photocath_EPHOTON, photocath_EFF, 2);
481  RICH_Photocathode_OpticalSurface_MPT->AddProperty("REFLECTIVITY", photocath_EPHOTON, photocath_REFL, 2);
482  RICH_Photocathode_OpticalSurface->SetMaterialPropertiesTable(RICH_Photocathode_OpticalSurface_MPT);
483 
484  // done
485  //
486  return;
487 }
488 
489 double RICH_Geometry::get_R_frontwindow() const
490 {
491  return (R_mirror_ref / 2 + sqrt(z_shift * z_shift + R_shift * R_shift) * (1 - frontwindow_DisplaceRatio)) - dR_frontwindow_shrink;
492 }
493 
494 double RICH_Geometry::get_half_angle_HBD() const
495 {
496  return atan(
497  tan(pi / N_RICH_Sector) / sqrt(1 + R_shift * R_shift / z_shift / z_shift));
498 }
499 
500 double RICH_Geometry::get_RZ_Seg1_HBD() const
501 {
502  return R_shift * (R_mirror_ref + 2 * sqrt(z_shift * z_shift + R_shift * R_shift)) / 4 / z_shift;
503 }
504 
505 double RICH_Geometry::get_RZ_Seg2_HBD() const
506 {
507  return ((R_mirror_ref + 2 * sqrt(pow(z_shift, 2) + pow(R_shift, 2))) * tan(2 * atan(exp(-min_eta)) - atan(R_shift / z_shift))) / 4.;
508 }
509 
510 double RICH_Geometry::get_R_Tip_HBD() const
511 {
512  const double l = sqrt(z_shift * z_shift + R_shift * R_shift) + R_mirror_ref / 2;
513 
514  return l * sin(get_Rotation_HBD()) - get_RZ_Seg1_HBD() * cos(get_Rotation_HBD());
515 }
516 
517 double RICH_Geometry::get_Z_Tip_HBD() const
518 {
519  const double l = sqrt(z_shift * z_shift + R_shift * R_shift) + R_mirror_ref / 2;
520 
521  return l * cos(get_Rotation_HBD()) + get_RZ_Seg1_HBD() * sin(get_Rotation_HBD());
522 }
523 
524 double RICH_Geometry::get_Rotation_HBD() const
525 {
526  return atan(R_shift / z_shift);
527 }
528 
529 int ePHENIXRICHConstruction::is_in_sector(G4VPhysicalVolume *volume) const
530 {
531  if (sector_vec.find(volume) != sector_vec.end())
532  return volume->GetCopyNo();
533  else
534  return -1;
535 }
536 
537 
538 G4Material *ePHENIXRICHConstruction::GetDetectorMaterial(const std::string &name, const bool quit)
539 {
540  G4Material *thismaterial = G4Material::GetMaterial(name,false);
541  if (thismaterial)
542  {
543  return thismaterial;
544  }
545  thismaterial = G4NistManager::Instance()->FindOrBuildMaterial(name);
546  if (!thismaterial)
547  {
548  if (!quit)
549  {
550  return nullptr;
551  }
552  std::cout << "PHG4Detector::GetDetectorMaterial: Could not locate " << name << " in NIST DB or create it" << std::endl;
553  std::cout << boost::stacktrace::stacktrace();
554  std::cout << std::endl;
555  std::cout << "read the above stack trace who is calling this material" << std::endl;
556  gSystem->Exit(1);
557  exit(1); // so coverity gets it
558  }
559  return thismaterial;
560 }
561