Results of active well coincidence counter cross-calibration measurements at Argonne National Laboratory-West.

On the Mathematical Calibration of the Active Well Neutron Coincidence Counter (AWCC)

“…The AWCC was tested and used in different applications by many authors [7][8][9][10][11][12][13][14][15][16][17]. It was compared with other neutron coincidence detectors to investigate its precision, counting rate, accuracy, stability, and the effect of sample inhomogeneity [7,8].…”

“…A semi-empirical calibration formula to calibrate the AWCC for 235 U measurements was developed by El-Gammal et al and Winn et al [1,12]. The AWCC was also used for assaying HEU samples with variation in matrix impurity [13], characterization of unknown NM samples [14], and cross-calibration investigation and other applications [15][16][17]. Rinard and Menlove [18] used the MCNP-REN code to model the AWCC in a configuration used to measure the uranium linear density in long fuel elements.…”

A proposed semi-empirical method for 235U mass calibration of the active-well neutron coincidence counter

“…The AWCC was tested and used in different applications by many authors [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28]. The AWCC was compared with other neutron coincidence detectors to investigate its precision, counting rate, accuracy, penetrability, stability, and the effect of sample inhomogeneity [11,12].…”

“…They applied this algorithm to AWCC measurements of HEU and found a good agreement between declared and measured values. The AWCC was also used for assaying HEU samples with variation in matrix impurity [21], characterization of unknown NM samples [22], and cross-calibration investigation and applications [23][24][25]. Rinard and Menlove [26] used the MCNP-REN code [27] to model the AWCC in a configuration used to measure the uranium linear density in long fuel elements.…”