Studies Of Neutron Transmittance Measurements Using Cooled CCD Camera

Abstract

Two cooled charge-coupled-device cameras (C-CCD: Hamamatsu C3140 and B&PI BM980) were applied to measure neutron transmittance for various slabs.One of neutron measurements showed that the highest gray level 4095 was observed with 150 sec on-chip integration at 1.5x10^7 n/cm2/s using an optics with a magnification factor of 1/4.6. A standard deviation of NR output signals (100 pixels averaged) was found to be +/-0.42%. Transmittance were measured for ten different samples by those C-CCD cameras, after scattering components were estimated and subtracted from observed neutron intensities passed through slabs, Measured macroscopic cross sections were agreed within +/- 20% to given values.