def __init__(self, parent, shift_z):
nist = G4.G4NistManager.Instance()
Vc = nist.FindOrBuildMaterial("G4_Galactic")
Al = nist.FindOrBuildMaterial("G4_Al")
Ge = nist.FindOrBuildMaterial("G4_Ge")
Pg = nist.FindOrBuildMaterial("G4_PLEXIGLASS")
Ml = nist.FindOrBuildMaterial("G4_MYLAR")
Ai = nist.FindOrBuildMaterial("G4_AIR")
A = 0.5 * 51.1 * mm # Crystal Radius
B = 72.9 * mm # Crystal Length
C = 0.5 * 8.8 * mm # Hole Radius
D = 64.0 * mm # Hole Depth
E = 0.5 * 8.8 * mm # Nominal Hole End Radius
F = 94. * mm # CUP Length
G = 3.0 * mm # Top Gap between CUP and the Shell
H1 = 0.03 * mm # CUP Top Al Thickness
H2 = 0.03 * mm # CUP Top Maylar Thickness
I = 1.0 * mm # Shell Top Thickness
J = 8.0 * mm # Nominal Crystal End Radius
K = 0.8 * mm # CUP Walls Thickness
L = 1.0 * mm # Shell Walls Thickness
M = 0.0003 * mm # Outer Dead Layer Thickness
N = 0.7 * mm # Inner Dead Layer Thikness
O = 3.0 * mm # CUP Bottom Thickness
P = 0.5 * 76.0 * mm # Shell Radius
Q = 120. * mm # Shell Length
Z = 0.0 * mm # zero
s, t = 0.0, 360.0 * deg # start, turn
# Detector Base
base = G4.G4Tubs("base", Z, P, 0.5 * O, s, t)
logBase = G4.G4LogicalVolume(base, Pg, "logBase")
# Detector
HPGe = G4.G4Tubs("HPGe", Z, P, 0.5 * Q, s, t)
logHPGe = G4.G4LogicalVolume(HPGe, Vc, "logHPGe")
# Making the Crystal shape
crystal1 = G4.G4Tubs("cyl1", Z, A - J, 0.5 * B, s, t)
crystal2 = G4.G4Tubs("cyl2", Z, A, 0.5 * (B - J), s, t)
torroid1 = G4.G4Torus("tor1", Z, J, A - J, s, t)
xyz = G4.G4ThreeVector(Z, Z, -0.5 * J)
crystal3 = G4.G4UnionSolid("cry3", crystal1, crystal2, None, xyz)
xyz = G4.G4ThreeVector(Z, Z, 0.5 * B - J)
crystal4 = G4.G4UnionSolid("cry4", crystal3, torroid1, None, xyz)
# Making the Active Crystal shape
activeCrystal1 = G4.G4Tubs("acyl1", Z, A - J, 0.5 * (B - M), s, t)
activeCrystal2 = G4.G4Tubs("acyl2", Z, A - M, 0.5 * (B - J), s, t)
activeTor1 = G4.G4Torus("activeTor1", Z, J - M, A - J, s, t)
xyz = G4.G4ThreeVector(Z, Z, -0.5 * (J - M))
activeCrystal3 = G4.G4UnionSolid("cry3", activeCrystal1,
activeCrystal2, None, xyz)
xyz = G4.G4ThreeVector(Z, Z, 0.5 * (B - M) - J)
activeCrystal4 = G4.G4UnionSolid("cry4", activeCrystal3, activeTor1,
None, xyz)
# Making the hole
hole1 = G4.G4Tubs("hole1", Z, C, 0.5 * (D - C), s, t)
hole2 = G4.G4Orb("hole2", C)
xyz = G4.G4ThreeVector(Z, Z, 0.5 * (D - C))
hole = G4.G4UnionSolid("hole", hole1, hole2, None, xyz)
# Making outer dead layer
xyz = G4.G4ThreeVector(Z, Z, Z)
outerDeadLayer = G4.G4SubtractionSolid("outerDeadLayer", crystal4,
activeCrystal4, None, xyz)
# Making the inner dead layer
innerDead1 = G4.G4Tubs("innerDead1", Z, C + N, 0.5 * (D - C), s, t)
innerDead2 = G4.G4Orb("innerDead2", C + N)
xyz = G4.G4ThreeVector(Z, Z, 0.5 * (D - C))
innerDead3 = G4.G4UnionSolid("innerDead3", innerDead1, innerDead2,
None, xyz)
xyz = G4.G4ThreeVector(Z, Z, Z)
innerDeadLayer = G4.G4SubtractionSolid("innerDeadLayer", innerDead3,
hole, None, xyz)
# Making final detector shape
xyz = G4.G4ThreeVector(Z, Z, 0.5 * (D - C) - 0.5 * (B - M))
activeCrystal = G4.G4SubtractionSolid("activeCrystal", activeCrystal4,
innerDead3, None, xyz)
logOuterDead = G4.G4LogicalVolume(outerDeadLayer, Ge, "logOuterDead")
logInnerDead = G4.G4LogicalVolume(innerDeadLayer, Ge, "logInnerDead")
logActive = G4.G4LogicalVolume(activeCrystal, Ge, "logActive")
# Mylar layer
mylarLayer = G4.G4Tubs("mylarLayer", Z, K + A, 0.5 * H2, s, t)
logMylar = G4.G4LogicalVolume(mylarLayer, Ml, "logMylar")
# CUP
CUP1 = G4.G4Tubs("CUP1", Z, K + A, 0.5 * F, s, t)
CUP2 = G4.G4Tubs("CUP2", Z, A, 0.5 * (F - H1 - O), s, t)
xyz = G4.G4ThreeVector(Z, Z, 0.5 * (O - H1))
CUP = G4.G4SubtractionSolid("CUP", CUP1, CUP2, None, xyz)
logCUP = G4.G4LogicalVolume(CUP, Al, "logCUP")
#detector shell
shell1 = G4.G4Tubs("shell1", Z, P, 0.5 * Q, s, t)
shell2 = G4.G4Tubs("shell2", Z, P - L, 0.5 * Q - L, s, t)
xyz = G4.G4ThreeVector(Z, Z, Z)
shell = G4.G4SubtractionSolid("shell", shell1, shell2, None, xyz)
logShell = G4.G4LogicalVolume(shell, Al, "logShell")
# Placement of all Elements
xyz = G4.G4ThreeVector(Z, Z, -(I + G + F) - 0.5 * O + shift_z)
G4.G4PVPlacement(None, xyz, logBase, "physBase", parent, False, 0)
xyz = G4.G4ThreeVector(Z, Z, -0.5 * Q + shift_z)
G4.G4PVPlacement(None, xyz, logHPGe, "physHPGe", parent, False, 0)
xyz = G4.G4ThreeVector(Z, Z, 0.5 * (Q - B) - I - G - H1)
G4.G4PVPlacement(None, xyz, logOuterDead, "physOuterDead", logHPGe,
False, 0)
xyz = G4.G4ThreeVector(Z, Z, 0.5 * (Q + D - C) - I - G - H1 - B)
G4.G4PVPlacement(None, xyz, logInnerDead, "physInnerDead", logHPGe,
False, 0)
xyz = G4.G4ThreeVector(Z, Z, Z)
G4.G4PVPlacement(None, xyz, logShell, "physShell", logHPGe, False, 0)
xyz = G4.G4ThreeVector(Z, Z, 0.5 * (Q + H2) - L - G)
G4.G4PVPlacement(None, xyz, logMylar, "physMylar", logHPGe, False, 0)
xyz = G4.G4ThreeVector(Z, Z, 0.5 * (Q - F) - L - G)
G4.G4PVPlacement(None, xyz, logCUP, "physCUP", logHPGe, False, 0)
xyz = G4.G4ThreeVector(Z, Z, 0.5 * (Q - M - B) - L - G - H1)
G4.G4PVPlacement(None, xyz, logActive, "physActive", logHPGe, False, 0)
self.logical = logActive
# Detector Visualization Attributes
BaseVA = G4.G4VisAttributes(G4.G4Color(1.0, 1.0, 1.0, 1.0))
BaseVA.SetForceSolid(True)
logBase.SetVisAttributes(BaseVA)
HPGeVA = G4.G4VisAttributes(G4.G4Color(1.0, 1.0, 0.0, 0.0))
HPGeVA.SetForceSolid(True)
logHPGe.SetVisAttributes(HPGeVA)
ShellVA = G4.G4VisAttributes(G4.G4Color(1.0, 0.5, 0.9, 0.1))
ShellVA.SetForceSolid(True)
logShell.SetVisAttributes(ShellVA)
CupVA = G4.G4VisAttributes(G4.G4Color(0.2, 1.0, 0.0, 0.1))
CupVA.SetForceSolid(True)
logCUP.SetVisAttributes(CupVA)
MylarVA = G4.G4VisAttributes(G4.G4Color(0.2, 1.0, 0.0, 0.6))
MylarVA.SetForceSolid(True)
logMylar.SetVisAttributes(MylarVA)
OutdlVA = G4.G4VisAttributes(G4.G4Color(0.9, 1.0, 0.0, 0.1))
OutdlVA.SetForceSolid(True)
logOuterDead.SetVisAttributes(OutdlVA)
InndlVA = G4.G4VisAttributes(G4.G4Color(0.9, 1.0, 0.0, 0.1))
InndlVA.SetForceSolid(True)
logInnerDead.SetVisAttributes(InndlVA)
CrystVA = G4.G4VisAttributes(G4.G4Color(0.8, 0.2, 0.8, 0.5))
CrystVA.SetForceSolid(True)
logActive.SetVisAttributes(CrystVA)
