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Increase xenon reactivity impact

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Codex Agent
2025-11-23 23:23:21 +01:00
parent 7f2b193dca
commit 9dc4ca7733
2 changed files with 4 additions and 4 deletions
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4
src/reactor_sim/neutronics.py
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@@ -33,7 +33,7 @@ class NeutronDynamics:
iodine_decay_const: float = 1.0 / 66000.0 # ~18h
xenon_decay_const: float = 1.0 / 33000.0 # ~9h
xenon_burnout_coeff: float = 1e-13 # per n/cm2
xenon_reactivity_coeff: float = 0.002
xenon_reactivity_coeff: float = 0.05
def reactivity(self, state: CoreState, control_fraction: float, rod_banks: list[float] | None = None) -> float:
if rod_banks:
@@ -101,4 +101,4 @@ class NeutronDynamics:
return self._xenon_penalty(state)
def _xenon_penalty(self, state: CoreState) -> float:
return min(0.03, state.xenon_inventory * self.xenon_reactivity_coeff)
return min(0.05, state.xenon_inventory * self.xenon_reactivity_coeff)

4
tests/test_neutronics.py
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@@ -40,6 +40,6 @@ def test_xenon_penalty_caps():
dynamics = NeutronDynamics()
state = _core_state()
state.xenon_inventory = 50.0
assert dynamics.xenon_penalty(state) == 0.03
state.xenon_inventory = 5.0
assert dynamics.xenon_penalty(state) == 0.05
state.xenon_inventory = 0.2
assert dynamics.xenon_penalty(state) == pytest.approx(0.01)