TITLE Neutron generation from primary collimator *---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8 DEFAULTS HADROTHE *---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8 * 0.0 x 0.0 cm2 field size, maximum energy 500 MeV, using a spectrum of 300MeV BEAM -0.10 0.0 0.0 0.0 0.0 1.0PROTON BEAMPOS 0.0 0.0 -49.5 0.0 0.0 POSITIVE * SOURCE *---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8 GEOBEGIN COMBINAT Disc SPH 1 0.0 0.0 0.0 +800.0 SPH 2 0.0 0.0 0.0 +600.0 * Tungsten collimator X: -5.0~5.0; Y: -5.0~5.0; Z: -49 - -39 RPP 3 -5.0 5.0 -5.0 5.0 -49.0 -39.0 END *---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8 *-reg-----or-----or-----or-----or-----or-----or-----or-----or-----or----- * Black hole at the beginning 1 3 1 -2 * Vacuum 2 3 2 -3 * Tungsten collimator 3 3 3 END GEOEND *---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8 MATERIAL 1.00 20.0 WATER COMPOUND 2.0 3.0 1.0 8.0 WATER *---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8 MATERIAL 0.001295 24.0 AIR COMPOUND -0.78084 7.0 -0.20946 8.0 AIR *---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8 MATERIAL 0.92 26.0 POLY COMPOUND 1.0 6.0 2.0 3.0 POLY *---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8 MATERIAL 5.0 10.811 2.34 27.0 BORON *---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8 MATERIAL 0.93 28.0 BPE COMPOUND -0.612 6.0 -0.116 3.0 -0.05 27.0BPE COMPOUND -0.222 8.0 BPE *---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8 *Blackhole ASSIGNMAT 1.0 1.0 * Vacuum ASSIGNMAT 2.0 2.0 * Tungsten collimator ASSIGNMAT 23.0 3.0 *---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8 EMF *---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8 * to calculate dose, need to activate fluscw.f * USERWEIG 0. 0. 4. 0. 0. 0. *---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8 USRYIELD 1401 8.0 32.0 -1.0 -2.0 1.0Neutron USRYIELD 0.3 0.0 1.03.14159265 0.0 0.0& *---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8 USRYIELD 1401 8.0 -42.0 -1.0 -2.0 1.0Neu3-2 USRYIELD 0.3 0.0 100.03.14159265 0.0 0.0& *---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8 RANDOMIZE 1.0 *---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8 START 10000. STOP