MCNP Error: JCO, Cell Cards & Surface Cards

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SUMMARY

The forum discussion addresses an MCNP (Monte Carlo N-Particle Transport Code) error related to JCO, cell cards, and surface cards that prevents the simulation from completing. The user provided specific cell and surface card definitions, including materials and geometry, which are crucial for troubleshooting. The error appears to be linked to the configuration of the cell cards and their corresponding surface definitions. A reference to a similar issue on Physics Forums suggests that this problem is not unique and may have established solutions.

PREREQUISITES
  • Understanding of MCNP (Monte Carlo N-Particle Transport Code) version 6 or later.
  • Familiarity with cell and surface card definitions in MCNP simulations.
  • Knowledge of material definitions and their properties in MCNP.
  • Basic skills in interpreting error messages and debugging simulation scripts.
NEXT STEPS
  • Review MCNP documentation on cell and surface card syntax and requirements.
  • Investigate common MCNP errors related to incomplete simulations and their resolutions.
  • Learn how to use MCNP's built-in debugging tools to identify issues in simulation scripts.
  • Explore community forums for case studies similar to the provided error for additional insights.
USEFUL FOR

This discussion is beneficial for nuclear engineers, researchers using MCNP for radiation transport simulations, and students learning about computational modeling in nuclear science.

phan xuan tham
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hi everyone, i have a mcnp error, it don't finish, it only run a half! i hope someone can help me! thank you!
and my code
JCO
c cell cards
1 1 -0.00117 -100 300
2 2 -1.52 (-100:-101) -300 #1 $solution
3 4 -7.93 (-110:-111)#1#2 $clad
4 3 -1 (-200:-201)#3#1#2 $water
5 4 -7.93 (-210:-211)#4#3#1#2 $clad
6 3 -1 -400
7 1 -0.00117 (211 210 111 110 -500 400)
8 0 500

c surface cards (origin 0 0 0)
c
c tank
100 rcc 0 0 4.2 0 0 56.5 22.5 $cylinder
101 trc 0 0 0 0 0 4.2 1.4 22.5 $cone
110 rcc 0 0 3.9 0 0 57.1 22.8
111 trc 0 0 -0.3 0 0 4.2 1.7 22.8
c water
200 rcc 0 0 1.7 0 0 39.4 25
201 trc 0 0 -2.2 0 0 3.9 1.4 25
210 rcc 0 0 1.4 0 0 40 25.3
211 trc 0 0 -2.5 0 0 3.9 1.7 25.3
c
300 pz 28.024
c
400 rcc 35 0 10 0 0 20 5
c
500 sph 5 0 30 45

c data cards
c
mode n
c
c materials
c air
m1 1001.60c 7.0459e-7
8016.60c 0.010877e-3
7014.60c 0.03784e-3
c solution
m2 1001.60c 0.0604
8016.60c 0.037816
7014.60c 1.896e-3
92235.60c 1.764271e-4
92238.60c 7.62014924e-4
c water
m3 1001.60c 0.06732
8016.60c 0.03342
c mt3 lwtr.01t
c clad
m4 14000. 0.0047
26000. 0.057
25055.60c 0.001736
24000. 0.018
28000. 0.00809
c
imp:n 1 1 1 3r 10 0
sdef cel=2 pos=0 0 5 erg=d1
sp1 -3
f4:n 6
nps 1e5

upload_2017-3-20_11-16-18.png
 
Last edited:
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