Beam pipe geometry created with create_bpipe_geometry_v13d_rich.C The beam pipe is composed of aluminium with a thickness proportional to the diameter (0.017*D(z)mm). It is placed directly into the cave as mother volume. The beam pipe consists of few sections excluding RICH section (1700-4000mm) because it is part of the RICH geometry. Each section has a PCON shape (including windows). There are two windows: first one @ 220mm with R600mm and 0.7mm thickness, second one @ 6000mm with R800mm and 3mm thickness. The last section of beam pipe (6000-15000mm) is rotated by an angle of 1.25 degree relative to point (0,0,1700)mm and the OY axis, following the bend of the ions in the magnetic field (field_v12b was used). Material: aluminium Thickness: 0.017*D(z) mm Beam pipe section: pipe1 - vacuum chamber i Z,mm Rin,mm Rout,mm h,mm 1 -50.00 25.00 25.70 0.70 2 25.00 25.00 25.70 0.70 3 35.00 130.00 130.70 0.70 4 230.17 130.00 130.70 0.70 5 230.17 110.00 130.70 20.70 6 230.87 110.00 130.70 20.70 Beam pipe section: pipe2 - first window @ 220mm, h=0.7mm, R=600mm i Z,mm Rin,mm Rout,mm h,mm 1 220.00 18.00 18.00 0.00 2 220.70 18.00 28.69 10.69 3 221.45 30.00 39.30 9.30 4 223.71 60.00 65.55 5.55 5 227.49 90.00 94.14 4.14 6 230.17 105.86 110.00 4.14 7 230.87 110.00 110.00 0.00 Beam pipe section: pipe3 - STS section i Z,mm Rin,mm Rout,mm h,mm 1 220.00 17.40 18.00 0.60 2 494.00 17.40 18.00 0.60 3 1250.00 73.47 76.00 2.53 4 1700.00 100.53 104.00 3.47 Beam pipe section: pipe5 - TRD & TOF section i Z,mm Rin,mm Rout,mm h,mm 1 4000.00 235.87 244.00 8.13 2 5996.93 354.60 366.81 12.21 3 6000.00 354.60 367.00 12.40 Beam pipe section: pipe6 - second window @ 6000mm, h=3mm, R=1000mm i Z,mm Rin,mm Rout,mm h,mm 1 5931.94 0.00 0.00 0.00 2 5934.97 0.00 73.60 73.60 3 5944.26 133.92 153.60 19.68 4 5959.79 219.70 233.60 13.90 5 5982.71 304.99 313.60 8.61 6 5996.93 345.98 354.60 8.62 7 6000.00 354.60 354.60 0.00 Beam pipe section: pipe7 - PSD section Traslation(dx,dy,dz): 0.00 0.00 1700.00 mm Rotation(phi,theta,psi): 90.00 1.25 0.00 deg i Z,mm Rin,mm Rout,mm h,mm 1 4231.94 29.97 31.00 1.03 2 13300.00 29.97 31.00 1.03