+ gMC->Gspos("BRS4", 1, "ALIC", 430.+3., -190.+55./2.+rbox[1], 224., 0, "ONLY");
+ gMC->Gspos("BRS4", 2, "ALIC", 430.+3., -190.+55./2.+rbox[1], -224., 0, "ONLY");
+// gMC->Gspos("BRS4", 3, "ALIC", -430.+3, -180.+55./2.+rbox[1], 224., 0, "ONLY");
+// gMC->Gspos("BRS4", 4, "ALIC", -430.+3, -180.+55./2.+rbox[1], -224., 0, "ONLY");
+
+
+
+ //
+ // The Backframe
+ //
+ // Inner radius
+ Float_t kBFMRin = 270.0;
+ // Outer Radius
+ Float_t kBFMRou = 417.5;
+ // Width
+ Float_t kBFMdz = 118.0;
+ //
+ //
+ // Rings
+ Float_t kBFRdr = 7.5;
+ Float_t kBFRdz = 8.0;
+ //
+ //
+ // Bars and Spokes
+ //
+ Float_t kBFBd = 8.0;
+ Float_t kBFBdd = 0.6;
+
+
+ // The Mother volume
+ Float_t tpar[3];
+ tpar[0] = kBFMRin;
+ tpar[1] = kBFMRou;
+ tpar[2] = kBFMdz / 2.;
+ gMC->Gsvolu("BFMO", "TUBE", kAir, tpar, 3);
+
+ // Rings
+ //
+ // Inner Ring
+ tpar[0] = kBFMRin;
+ tpar[1] = tpar[0] + kBFRdr;
+ tpar[2] = kBFRdz / 2.;
+
+ gMC->Gsvolu("BFIR", "TUBE", kSteel, tpar, 3);
+
+ tpar[0] = tpar[0] + kBFBdd;
+ tpar[1] = tpar[1] - kBFBdd;
+ tpar[2] = (kBFRdz - 2. * kBFBdd) / 2.;
+
+ gMC->Gsvolu("BFII", "TUBE", kAir, tpar, 3);
+ gMC->Gspos("BFII", 1, "BFIR", 0., 0., 0., 0, "ONLY");
+
+ //
+ // Outer RING
+ tpar[0] = kBFMRou - kBFRdr;
+ tpar[1] = kBFMRou;
+ tpar[2] = kBFRdz / 2.;
+
+ gMC->Gsvolu("BFOR", "TUBE", kSteel, tpar, 3);
+
+ tpar[0] = tpar[0] + kBFBdd;
+ tpar[1] = tpar[1] - kBFBdd;
+ tpar[2] = (kBFRdz - 2. * kBFBdd) / 2.;
+
+ gMC->Gsvolu("BFOO", "TUBE", kAir, tpar, 3);
+ gMC->Gspos("BFOO", 1, "BFOR", 0., 0., 0., 0, "ONLY");
+
+
+ dz = kBFMdz/2. - kBFRdz / 2.;
+ gMC->Gspos("BFIR", 1, "BFMO", 0., 0., dz, 0, "ONLY");
+ gMC->Gspos("BFIR", 2, "BFMO", 0., 0., -dz, 0, "ONLY");
+ gMC->Gspos("BFOR", 1, "BFMO", 0., 0., dz, 0, "ONLY");
+ gMC->Gspos("BFOR", 2, "BFMO", 0., 0., -dz, 0, "ONLY");
+
+ //
+ // Longitudinal Bars
+ //
+ Float_t bpar[3];
+
+ bpar[0] = kBFBd/2;
+ bpar[1] = bpar[0];
+ bpar[2] = kBFMdz/2. - kBFBd;
+ gMC->Gsvolu("BFLB", "BOX ", kSteel, bpar, 3);
+
+ bpar[0] = bpar[0] - kBFBdd;
+ bpar[1] = bpar[1] - kBFBdd;
+ bpar[2] = bpar[2] - kBFBdd;
+ gMC->Gsvolu("BFLL", "BOX ", kAir, bpar, 3);
+ gMC->Gspos("BFLL", 1, "BFLB", 0., 0., 0., 0, "ONLY");
+
+ for (i = 0; i < 18; i++)
+ {
+ Float_t ro = kBFMRou - kBFBd / 2.;
+ Float_t ri = kBFMRin + kBFBd / 2.;
+
+ Float_t phi = Float_t(i) * 20.;
+
+ Float_t x = ri * TMath::Cos(phi * kDegrad);
+ Float_t y = ri * TMath::Sin(phi * kDegrad);
+ AliMatrix(idrotm[2090+i], 90.0, phi, 90.0, phi + 270., 0., 0.);
+
+ gMC->Gspos("BFLB", i + 1, "BFMO", x, y, 0., idrotm[2090 + i], "ONLY");
+
+ x = ro * TMath::Cos(phi * kDegrad);
+ y = ro * TMath::Sin(phi * kDegrad);
+
+ gMC->Gspos("BFLB", i + 19, "BFMO", x, y, 0., idrotm[2090 +i], "ONLY");
+ }
+
+ //
+ // Radial Bars
+ //
+ bpar[0] = (kBFMRou - kBFMRin - 2. * kBFRdr) / 2.;
+ bpar[1] = kBFBd/2;
+ bpar[2] = bpar[1];
+ //
+ // Avoid overlap with circle
+ Float_t rr = kBFMRou - kBFRdr;
+ Float_t delta = rr - TMath::Sqrt(rr * rr - kBFBd * kBFBd / 4.) + 0.01;
+ bpar[0] -= delta /2.;
+
+
+ gMC->Gsvolu("BFRB", "BOX ", kSteel, bpar, 3);
+
+ bpar[0] = bpar[0] - kBFBdd;
+ bpar[1] = bpar[1] - kBFBdd;
+ bpar[2] = bpar[2] - kBFBdd;
+ gMC->Gsvolu("BFRR", "BOX ", kAir, bpar, 3);
+ gMC->Gspos("BFRR", 1, "BFRB", 0., 0., 0., 0, "ONLY");
+
+ Int_t iphi[10] = {0, 1, 3, 6, 8, 9, 10, 12, 15, 17};
+
+ for (i = 0; i < 10; i++)
+ {
+
+ Float_t r = (kBFMRin + kBFMRou)/2.;
+ Float_t phi = Float_t(iphi[i]) * 20.;
+
+ Float_t x = r * TMath::Cos(phi * kDegrad);
+ Float_t y = r * TMath::Sin(phi * kDegrad);
+
+ gMC->Gspos("BFRB", i + 1, "BFMO", x, y, dz, idrotm[2034 + iphi[i]], "ONLY");
+ gMC->Gspos("BFRB", i + 11, "BFMO", x, y, -dz, idrotm[2034 + iphi[i]], "ONLY");
+
+ }
+
+ gMC->Gspos("BFMO", i + 19, "ALIC", 0, 0, - 376. - kBFMdz/2. - 0.5 , 0, "ONLY");
+
+