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Beginner MCNP

  1. Apr 17, 2015 #1
    I just started learning MCNP for research reactor analysis. Can anybody advise where and how I could easily get material to read and practice
     
  2. jcsd
  3. Apr 18, 2015 #2
  4. Apr 21, 2015 #3
     
  5. Apr 24, 2015 #4
    You can install the VisEd, it is a good visualizing tool and also you may run on it.

    Or you can start a batch file ( in the folder of the input file ) with the command:

    MCNP5 (or whatever the version you are using) I=name of the input file with extension O=name of the output file with extension
     
  6. Apr 28, 2015 #5
    Dear Sir,
    Thank you so much for your eagerness to help.
    kindly explain to me the following:
    1. Can you tell me what LCS: error in MCNPX
    I got the LCS error prompt from running the input file below:
    example 4-3, repeated structure, two cylinders
    C cell cards
    1 1 9.90605e-2 -1 -4 5 u=3 imp:n=1 $ solution
    2 0 -1 4 u=3 imp:n=1 $ void region
    3 2 -2.7 1:-5 u=3 imp:n=1 $Al container
    4 0 -2 -3 6 fill=3 imp:n=1
    5 like 4 but trcl (17 0 0) imp:n=1
    6 3 -1.0 10 -11 8 -9 7 -3 #4 #5 imp:n=1
    7 0 -10:11:-8:9:-7:3 imp:n=0
    C surface cards
    1 cz 6.35 $ solution radius
    2 cz 6.50 $
    3 pz 80.0 $ top of container
    4 pz 70.2 $ top of solution
    5 pz 0.0
    6 pz -0.15
    7 pz -20.15 $ bottom of tank
    c sides of tank
    8 px -16.5
    9 px 43.5
    10 py -26.5
    11 py 26.5
    c data cards
    c materials cards
    m1 1001.62c 6.2210e-2 8016.62c 3.3621e-2
    9019.62c 2.5161e-2 92235.66c 1.1760e-2
    92238.66c 8.2051e-5
    mt1 lwtr.60t
    m2 13027.62c 1.0
    m3 1001.62c 2 8016.62c 1
    mt3 lwtr.60t
    c control cards
    kcode 5000 1.0 50 250
    ksrc 0 0 35 17 0 35

    I was trying this example from the mcnp primer, but whiles running, it stopped at the 192nd cycle and indicated “LCS error”
    1. I would want to know how I can execute basic plot command.
    The primer indicates I could execute plot command by “mcnp inp=filename ip” or mcnp ip inp=filename. I expect to see the “The default plot is a PX slice centered at (0, 0, 0) with an extent of -100 cm to 100 cm on the Y-axis and -100 cm to 100 cm on the Z-axis” as indicated in the primer. Instead, the is the error comment I get, “bad trouble in mcnpx in routine unique cannpt create outp
    In fact, the main problem is how to use the command to display the plot for now before I begin to think about how to make in unique.
    Best Regards
    Isaac Kwasi Baidoo
     
  7. Feb 10, 2016 #6
    can i ask you sir??
     
  8. Feb 10, 2016 #7
    Dear Sir,

    Sorry sir, i found problem in solving detector flux using tally F5. For tally F5 there is R0 for point and ring detector. I still confuse what’s meaning of R0 ??? can you help me to give me some example for make me easy to undestand it???thank you sir,

    I hope you help me to solving the problem
     
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