Brachytherapy source specifications

[saidhorion]

hi every body i use MCNPX with a Z600 with 20Go of ram and 16 core to calculate the dep energy arrownd a source of cobalt with the tally F6, but when i put NPS=3E+9 an erreur apears that '' all entries must be integers''. i want help because NPS=2E+9 dosn't give a satisfaying results?

 

[PSRB191921]

Hi,
what version do you use of MCNPX ? Since the 2.5.0 version MCNPX runs in 64-bit (2E18 particles)
see § 2.3.1 of https://mcnp.lanl.gov/pdf_files/la-ur-04-8695.pdf

 

[saidhorion]

Hi,
i have the version: 2.7 of MCNPX, win7 64-bit.

 

[PSRB191921]

So I suppose you don't have a fatal error on the beginning of the run but in progress ?