Recent content by Eva Eva Eva

Thank you. As my version is mcnp4c2, error occurred when I typed tmesh code. I think the code should be fine. I have to ask for more updated version. Which version should I use? mcnp6 or mcnpx?Thank you again.

I would like to calculate the dose rate like the above graph. So, I have to define the every small cell inside the room? Any other method to do this? Thank you.

Thanks PSRB191921 I have tried nps 10000000 The results were ok. Just one more question How to perform mesh tally inside the room? I wanted the dose rate result inside the room F6:P 1 could be visualized in MCNP VE. Thanks a lot! I tried wwp: p 4j 1 wwg 6 5 wwge:p .01 0.1 0.14 mesh GEOM=cyl...

Sorry for the late response. I have updated the code, but still the F4 and F6 tally in cell 15 was zero. The source came out from the X-ray tube could not reach the tally box and even the plastic phantom behind. Is there anything wrong about the geometry? Thanks a lot!

For simplicity, I didn't add lead shielding around the X-ray tube head, just Al window at the exit. Thanks anyway.

Sample Problem Input Deck c cell cards for sample problem 1 1 -0.001205 -1 5 10 15 20 25 30 5 2 -11.3 -5 10 3 -1.1 -10 15 1 -0.001205 -15 20 4 -2.7 -20 25 5 -19.3 -25 30 0 -30 25 40 0 1 C Surface cards 1 rpp -500 500 -500 500 -500 500 $ room 5 rpp 300 301 -500 0.1 -500 500 $ lead shield 10 rcc...

Dear all, I would like to simulate X-ray tube and check the dose rate in the room. My problem is when I simulate 80kV electrons bombard to the tungsten target, there is just a few photons coming out from the tube window. And the dose rate at 1m from the tube is nearly zero which is impossible...