ADDITIVE MANUFACTURING OF A SCINTILLATOR FOR RADIATION DETECTION

摘要

The objective of this work was to create an unobtrusive, discreet radiation sensor. In this paper we describe the additive manufacturing process used to fabricate an organic scintillation detector for use in detecting ionizing radiation. An off the shelf stereo lithography printer was used with standard transparent resin which was doped with varying scintillant powders in varying amounts. The concentration of the dopant, the method of mixing, and the overall printing process was investigated to produce an additively manufactured scintillator which was then mated with a standard photomultiplier tube to detect and measure ionizing radiation. The overall detector was tested with gamma and neutron sources over exposure periods. The detector was able to clearly distinguish the sources from background with an expected continuum energy response relative to the strength and energy of the source. Future work will include customization of the geometry, coupling to other light sensors, and expansion to other printing methods, and evaluation of the ability to further discriminate non-ionizing radiation sources to create an effective and discreet detector.