Measurement Method of Key Parameter of Thick Pinhole with Little-angle and Double Cones

In order to measure the effective diameter and the field-of-view diameter for a thick pinhole with a little-angle and double cones, experiments were designed and carried out on a ⁶⁰Co gamma source, and the experimental result agrees well with the calculated result. The experimental method presented in the paper can supply a high precision approach to validating the reliability of design and the precision of manufacture.