-/*
-$Log$
-Revision 1.17 2001/11/17 01:29:21 morsch
-Obsolete and wrong volume YXO5 removed.
-
-Revision 1.16 2001/11/16 08:57:42 morsch
-Volume YP32 obsolete.
-
-Revision 1.15 2001/11/05 10:41:06 morsch
-Avoid overlap of compensation magnet with HALL.
-
-Revision 1.14 2001/10/26 08:36:19 morsch
-Geometry update.
-
-Revision 1.13 2001/04/23 23:12:41 morsch
-Overlap in closing cone corrected (thanks to Ivana Hrivnacova)
-
-Revision 1.12 2001/03/16 16:26:05 morsch
-Put vacuum in beam-pipe not air.
-
-Revision 1.11 2000/10/27 15:21:24 morsch
-Shield composition after muon project leader meeting: 24/10/2000
-- 1 cm recess in steel for station 3
-- no heavy shielding between chambers for stations 1 and 2
-
-Revision 1.10 2000/10/02 21:28:15 fca
-Removal of useless dependecies via forward declarations
-
-Revision 1.9 2000/09/12 17:00:45 morsch
-Overlaps in YMO3 and YMO4 (side-effect from last update only) corrected.
-
-Revision 1.8 2000/09/12 16:11:43 morsch
-- Bug in volume YGO2 corrected: PCON started with twice the same z-value.
-- Recesses for chambers added to outer Pb cone.
-
-Revision 1.7 2000/06/15 09:40:31 morsch
-Obsolete typedef keyword removed
-
-Revision 1.6 2000/06/13 15:01:38 morsch
-Make kind of heavy shielding material (Pb, NiCuW) dependent on presence of outer cone.
-
-Revision 1.5 2000/06/12 19:40:00 morsch
-New structure of beam pipe and heating jacket.
-Optional outer Pb cone added. Not yet compatible with chamber inner radii.
-
-Revision 1.4 2000/04/03 08:13:40 fca
-Introduce extra scope for non ANSI compliant C++ compilers
-
-Revision 1.3 2000/01/17 10:29:30 morsch
-Overlap between Shield and Absorber due to limited numerical precision removed
-by displacing the Shield by epsilon = 0.01 cm.
-
-Revision 1.2 2000/01/13 11:27:51 morsch
-Overlaps corrected: YCS3, YCS4; Inner radius YS21 corrected
-
-Revision 1.1 2000/01/12 15:44:03 morsch
-Standard version of SHIL
-
-*/