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MCNP4C: efficiency calculation

  1. Jul 3, 2007 #1
    Any one familiar with MCNP4C efficiency calculation can help me with this?
    My cal. result for 1.836MeV(e.g.) is always small (6.16447E-05 ) compared to it should be(3.78E-004 by a professional business software), here is the inp file, is there anything wrong with the geometry define or source or tally card?
    Thank you very much!!!
    ******************************************************
    ---Cal of NaI sensitivity to be compared with Labsocs results
    c cells
    1 1 1.0 (1 -7 -12)#(1 -6 -11) imp:P=1
    2 2 -7.86 (1 -6 -11)#(1 -5 -10) imp:P=1
    3 3 -3.67 3 -4 -9 imp:P=1
    4 4 -2.7 (2 -5 -10)#3 imp:P=1
    5 5 -1.293e-3 -14 #1#2#3#4 imp:P=1
    6 0 14 IMP:P=0

    c surfaces(cm)
    1 PY 0
    2 PY 19.2
    3 PY 19.56
    4 PY 24.64
    5 PY 25
    6 PY 26
    7 PY 41
    9 CY 2.54
    10 CY 2.9
    11 CY 3.9
    12 CY 20
    14 SY 20.5 30

    mode P
    sdef cel=1 erg=D1 pos=0 0 0 axs=0 1 0 rad=D2 ext=D3 EFF=0.01
    c for comparement
    SI1 L 1.83608
    c SI1 L 1.33249
    c SI1 L 1.17322
    c SI1 L 0.898
    c SI1 L 0.66165
    c SI1 L 0.514
    SP1 D 1
    SI2 0 20.6
    SI3 -0.1 41.1
    c M1 is H2O
    M1 1001 0.6667 8016 0.3333 92235 0.966e-6
    c M2 is Fe
    M2 26056 1
    c M3 is NaI
    M3 11023 0.5 53127 0.5
    c M4 is Al
    M4 13027 1
    c M5 is air
    M5 8016 -0.231 7014 -0.7506 18040 -0.1286
    F8:P 3
    E8 0 1e-5 1 10I 1.8355 7I 1.8362
    c E8 0 1e-5 1 10I 1.3321 7I 1.3328
    c E8 0 1e-5 1 10I 1.1725 9I 1.1735
    c E8 0 1e-5 0.1 10I 0.891 9I 0.901
    c E8 0 1e-5 0.1 10I 0.510 9I 0.515
    c E8 0 1e-5 0.1 10I 0.3910 9I 0.3920
    c E8 0 1e-5 0.05 10I 0.3195 9I 0.3205
    c E8 0 1e-5 0.05 10I 0.1582 9I 0.1592
    c E8 0 1e-5 0.1 10I 0.6612 9I 0.6622
    c E8 0 1e-5 0.01 13I 0.14 40I 0.145 0.15
    c E8 0 1e-5 0.14366 11I 0.14378.
    c E8 0 1e-5 0.05 0.1 10I 0.2045 9I 0.2055
    c E8 0 1e-5 0.05 0.1 0.1850 9I 0.1860
    c T6 0 10I 660e8
    c fq6 t e
    CTME 20
    *******************************************************
     
  2. jcsd
  3. Jul 3, 2007 #2
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