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

IF 1 Q3 MULTIDISCIPLINARY SCIENCES

gazi university journal of science Pub Date : 2022-10-14 DOI:10.35378/gujs.1018518

B. Demirköz, P. Uslu Kiçeci, S. Uzun Duran

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Abstract

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

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metu离焦光束线预测辐照后防护准直器的辐射测量及与仿真比较

必须对电子部件进行测试，以便在辐射环境中执行安全可靠的任务。METU散焦光束线（METU-DBL）安装在土耳其能源、核与采矿研究所（TENMRI）粒子加速器设施（PAF）的研发室中，以根据欧空局（欧洲航天局）ESCC（欧洲空间组件协调）编号：25100标准对这些电子组件进行质子辐照测试。METU-DBL使用四极磁体和准直器等光束元件来分别放大光束和减小通量以满足标准的规范。在METU-DBL最终设计组装之前，构建了一个预测试装置，该系统总共运行了17个小时，持续了三个月。第一个保护准直器由316L不锈钢制成，并在预测试期间使用。由于这些辐射，准直器中出现的放射性同位素被NaI探测器原位观察和测量。将这些测量结果与最后一次照射后120天的FLUKA模拟结果进行比较。在14种放射性同位素中，只有6种放射性同位素的活度超过1.0×101Bq/cm3。

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来源期刊

gazi university journal of science MULTIDISCIPLINARY SCIENCES-

CiteScore

1.60

自引率

11.10%

发文量

期刊介绍： The scope of the “Gazi University Journal of Science” comprises such as original research on all aspects of basic science, engineering and technology. Original research results, scientific reviews and short communication notes in various fields of science and technology are considered for publication. The publication language of the journal is English. Manuscripts previously published in another journal are not accepted. Manuscripts with a suitable balance of practice and theory are preferred. A review article is expected to give in-depth information and satisfying evaluation of a specific scientific or technologic subject, supported with an extensive list of sources. Short communication notes prepared by researchers who would like to share the first outcomes of their on-going, original research work are welcome.