Radioactivation Measurement of a Protective Collimator and Comparisons with Simulation After METU-Defocusing Beamline Pretest Irradiation

Electronic components must be tested to allow for safe and reliable missions in radiation environments. The METU Defocusing Beamline (METU-DBL) was installed the R&D room at Particle Accelerator Facility (PAF) of Turkish Energy, Nuclear Mineral Research Agency (TENMAK). This facility established accordance with European Space (ESA), Components Coordination (ESCC), No: 25100 standard conduct proton irradiation tests electronic various materials used space environment. METU-DBL uses beam elements such as quadrupole magnets amplify collimators reduce flux, per specifications standard.A pretest setup constructed, this system operated a total 17 hours three months before final design assembled. first protective collimator is made stainless steel 316L during period pretests. As result these irradiations, emerged radioisotopes were observed measured situ NaI detector. These measurements compared FLUKA simulations 120 days after last irradiation. Among fourteen radioisotopes, only six them activity above 1.0×101 Bq/cm3 matched.