Fig. 5: Cross calibration of the 6Li glass composite scintillator detector.
From: Next-generation neutron detection using a 6Li glass scintillator composite
a PMT current vs neutron count rate in the region of interest (ROI) using the data shown in Fig. 4 for neutron fluxes of <2.6 × 103 n/(s·cm2). The slope of the linear fit (red dashed line) corresponds to the charge per neutron capture event produced by the PMTs, and this cross-calibration constant was found to be 78.5 pC (R2 = 0.9950) per neutron capture for this detector configuration. b PMT current (from Fig. 4b) converted to neutron count rates using the above cross-calibration constant vs the total neutron flux on the detector, assuming a lateral surface area of 181.22 cm2. The slope of the linear fit (red dashed line) corresponds to the neutron detection efficiency and was found to be 6.70 ± 0.01% (R2 = 0.99999). The error bars in both figures represent the ±1 standard deviation of the statistical measurement uncertainty.
