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Fix bugs when using nuclides for consistent scattering matrix MGXS with multiplicity or transport correction

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This commit is contained in:
Will Boyd 2017-04-11 08:37:00 -04:00
parent d359909aa8
commit 49aac97804
1 changed files with 21 additions and 3 deletions
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24
openmc/mgxs/mgxs.py
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@ -3917,6 +3917,8 @@ class ScatterMatrixXS(MatrixMGXS):
scatter_p0 = self.tallies['{}-0'.format(self.rxn_type)]
scatter_p1 = self.tallies['{}-1'.format(self.rxn_type)]
energy_filter = scatter_p0.find_filter(openmc.EnergyFilter)
# Transform scatter-p1 tally into an energyin/out matrix
# to match scattering matrix shape for tally arithmetic
energy_filter = copy.deepcopy(energy_filter)
scatter_p1 = scatter_p1.diagonalize_filter(energy_filter)
self._rxn_rate_tally = scatter_p0 - scatter_p1
@ -3990,6 +3992,9 @@ class ScatterMatrixXS(MatrixMGXS):
self.tallies['scatter'] * self.tallies[tally_key] / norm
self._xs_tally /= self.tallies['flux (tracklength)']
# Override the nuclides for tally arithmetic
self._xs_tally.nuclides = self.tallies['scatter'].nuclides
# Multiply by the multiplicity matrix
if self.nu:
numer = self.tallies['nu-scatter-0']
@ -3998,14 +4003,27 @@ class ScatterMatrixXS(MatrixMGXS):
# If using P0 correction subtract scatter-1 from the diagonal
if self.correction == 'P0' and self.legendre_order == 0:
flux = self.tallies['flux (analog)']
scatter_p1 = self.tallies['{}-1'.format(self.rxn_type)]
# Extract tallies needed to compute the transport correction
scatter_p1 = self.tallies['{}-1'.format(self.rxn_type)]
if self.formulation == 'simple':
flux = self.tallies['flux']
else:
flux = self.tallies['flux (analog)']
# Transform scatter-p1 tally into an energyin/out matrix
# to match scattering matrix shape for tally arithmetic
energy_filter = flux.find_filter(openmc.EnergyFilter)
energy_filter = copy.deepcopy(energy_filter)
scatter_p1 = scatter_p1.diagonalize_filter(energy_filter)
self._xs_tally -= (scatter_p1 / flux)
# Compute the trasnport correction term
correction = scatter_p1 / flux
# Override the nuclides for tally arithmetic
correction.nuclides = scatter_p1.nuclides
self._xs_tally -= correction
self._compute_xs()
return self._xs_tally