Method of neutron detector testing

Each neutron detector is irradiated from opposite sides simultaneously using at least two point neutron sources placed on a straight line with the detector. The optimal detector response is found by gradually altering the detector - source distances. The sources and the detector are placed in the same moderating medium. The advantages include the use of the optimal moderator layer for testing detectors of different sensitivity, more accurate values of the sensitivity and improved working conditions due to reduced radiation dose rates. (J.B.). 2 figs., 3 tabs