The Impossible Monte Carlo Problem - pass1 C ---------------------------------------- C VARIANCE REDUCTION MEASURES C C Geometry splitting C Point Detector C 0.01MeV energy cutoff C Cell importances C Generate weight windows from this run C ----------------------------------------- C CELL CARDS 1 0 (1 -21):-2 $ External void around and beneath shaft C Concrete shield 2 1 -2.03 -1 -3 2 3 1 -2.03 -1 -4 3 4 1 -2.03 -1 -5 4 5 1 -2.03 -1 -6 5 6 1 -2.03 -1 -7 6 7 1 -2.03 -1 -8 7 8 1 -2.03 -1 -9 8 9 1 -2.03 -1 -10 9 10 1 -2.03 -1 -11 10 11 1 -2.03 -1 -12 11 12 1 -2.03 -1 -13 12 13 1 -2.03 -1 -14 13 14 1 -2.03 -1 -15 14 15 1 -2.03 -1 -16 15 16 1 -2.03 -1 -17 16 17 1 -2.03 -1 -18 17 18 1 -2.03 -1 -19 18 19 1 -2.03 -1 -20 19 C 20 0 -1 -21 20 $ Void in shaft 21 1 -0.0203 -1 -22 21 $ Low density concrete plug 22 0 1 -22 21 -23 $ Void around top plug 23 0 22 $ External void at top 24 0 21 -22 23 $ External void C SURFACE CARDS 1 CY 100.0 C 2 PY 0.0 3 PY 10.0 4 PY 20.0 5 PY 30.0 6 PY 40.0 7 PY 50.0 8 PY 60.0 9 PY 70.0 10 PY 80.0 11 PY 90.0 12 PY 100.0 13 PY 110.0 14 PY 120.0 15 PY 130.0 16 PY 140.0 17 PY 150.0 18 PY 160.0 19 PY 170.0 20 PY 180.0 C 21 PY 2000.0 22 PY 2010.0 C 23 CY 201.0 MODE N C IMP:N 0 1 2M 2M 2M 2M 2M 2M 2M 2M 2M 2M 2M 2M 2M 2M 2M 2M 2M 2M C 2M 2M 0 0 C WWP:N 5 3 5 0 0.25 C WWG 5 2 0 0 0 wwp:n 5 3 5 wwe:n 1.0000E+02 wwn1:n -1.0000E+00 5.0000E-01 3.1348E-01 1.3830E-01 6.5887E-02 3.0621E-02 1.5618E-02 7.3854E-03 3.1013E-03 1.2799E-03 5.8430E-04 2.3027E-04 1.0050E-04 4.7083E-05 2.3870E-05 1.2410E-05 5.0343E-06 2.0813E-06 8.7971E-07 0 0.0000E+00 0.0000E+00 -1.0000E+00 -1.0000E+00 C C SOURCE DEFINITION C Point source at origin C 25% at 2Mev, 25% between 2MeV & 14MeV, 50% at 14MeV SDEF POS=0 1.0E-4 0 ERG=D1 SI1 2.0 2.00000001 14.0 14.00000001 SP1 0 0.25 0.25 0.5 C CUT:N J 0.01 0 0 $ ENERGY CUTOFF C C C TALLIES C Point Detector tally C F5:N 200.0 2005.0 0.0 0.0 PD5 0 19R 1 0 0 0 DD5 0.2 C C Energy bins E0 0.01 100.0 C C MATERIAL CARD C Material 1 is concrete M1 1001.60C -0.01 6000.60C -0.001 8016.60C -0.529 13027.60C -0.034 14000.60C -0.337 26000.50C -0.014 C ctme 3.0