In the early stages of shield design for the 500 MWe pool type Prototype Fast Breeder Reactor PFBRR), the DLC-37 coupled (100n, 21 γ) cross section set, extended to include data for the plutonium isotopes, only was used for the transport calculations.
An analysis is performed to determine the size of the temperature intervals for custom-developed cross-section sets, which indicated the necessity of 50 K bins in the fuel and 10 K bins in the coolant.
Accurate modeling of the reactor physics in a SCWR requires a detailed temperature treatment, including the effects of Doppler broadening (TMP cards in MCNP), thermal scattering (MT cards), and fully temperature-dependent cross-section sets for fuel and coolant (using the MAKXSF code).
The current cross-section setting is retrieved ("bcmc", the default).
Many 2-D R-Z transport calculations were carried out for FBTR including all regions of interest like borated graphite and carbon steel in the top shield and vault concrete to obtain 175 group neutron flux distribution in Vitamin J structure with IGC-S3 self shielded cross-section set.
Alternatively, they suggest that one should analyze the growth empirics country-by-country, rather than putting all countries under a cross-section setting.
The longitudinal direction of the TPM is set as x-axis, outer normal direction of cross section is set as y-axis and vertical downward direction is set as z-axis which is selected as force hammer stimulating direction.
Assuming a branching fraction of unity for the decay LQ -> t tau, upper limits on the production cross section are set as a function of LQ mass, excluding masses below 900 GeV at 95% confidence level.
This work provides the first cross section data set of DNA constituents for an impact of electrons in the energy range between about 10 eV and 1 keV on a DNA target.
To approximate a semi-infinite medium the slab cross section was set to 10 x 10 cm.
