Interpretation of Local Flux Measurements in Subcritical Systems and Reactivity Determination

Table 1

Percentage relative error on the integral of the flux in the detector positions, as obtained by the different point kinetic models with respect to the reference solution. In bold the “best” results are evidenced.

PK model		𝑘eff=0.95		𝑘eff=0.98
		𝑥0=0.9L	𝑥0=5.3L	𝑥0=0.9L	𝑥0=5.3L
Source-driven shape	lpk	0.66	−2.29	𝟎.𝟏𝟐	𝟎.𝟐𝟗
	gpk	−0.92	𝟏.𝟐𝟐	−1.83	3.90
	cpk	−𝟎.𝟒𝟒	1.71	−1.27	4.49
Critical shape	lpk	𝟎.𝟏𝟕	𝟏.𝟕𝟏	−𝟏.𝟎𝟏	𝟒.𝟒𝟗
	gpk	−7.83	18.80	−4.48	11.25
	cpk	−5.56	21.72	−3.50	12.40