Upgrade of the Hungarian PILLE-ISS onboard thermoluminescent system for the dose assessment during extravehicular activities

IF 1.6 3区物理与天体物理 Q2 NUCLEAR SCIENCE & TECHNOLOGY Radiation Measurements Pub Date : 2024-07-23 DOI:10.1016/j.radmeas.2024.107255

Attila Hirn , István Apáthy , Antal Csőke , Patrik Pinczés , Andrey E. Lishnevskii , Victor G. Mitrikas , Valentina A. Bondarenko , Sergey G. Drobyshev , Olga V. Babueva , Olga A. Ivanova , Raisa V. Tolochek , Vyacheslav A. Shurshakov , Konstantin O. Inozemtsev

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Abstract

The paper presents results of on-ground (pre-flight) calibrations and flight tests (cross-calibration and in situ measurements) of the new, Modified PILLE-ISS Dosimeters with reduced shielding, developed for the radiation monitoring of astronauts during their extravehicular activity (EVA) on board the International Space Station (ISS). The smaller dimensions and weight of the modified thermoluminescent dosimeter allows ergonomic and safe use during EVA, when the dosimeter kit is worn in the outer pocket of a spacesuit. The special design of the detector housing makes it possible to estimate the dose to the astronaut's skin during EVA more accurately. Both pre-flight calibration with high-energy protons and on-board cross-calibration at ISS showed that the variability of the relative sensitivities does not exceed (5–10)% for any of the Modified PILLE-ISS Dosimeters. The additional dose received by astronauts during ISS EVAs in 2023 was in the range (0.37–0.75) mGy (in water) based on the measurements. The corresponding dose rate outside ISS is consistent with the previous readings of other dosimetric equipment installed on the outer surface of space station.

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匈牙利 PILLE-ISS 船载热释光系统升级，用于舱外活动期间的剂量评估

本文介绍了新型改良型 PILLE-ISS 剂量计的地面（飞行前）校准和飞行测试（交叉校准和原位测量）结果，该剂量计采用了较少的屏蔽，是为宇航员在国际空间站（ISS）上进行舱外活动（EVA）期间进行辐射监测而开发的。改进后的热释光剂量计尺寸更小、重量更轻，在舱外活动时可将剂量计套件放在宇航服的外袋中，使用起来既符合人体工程学，又十分安全。探测器外壳的特殊设计可以更准确地估计 EVA 期间宇航员皮肤受到的剂量。用高能质子进行的飞行前校准和在国际空间站进行的机载交叉校准都表明，改良型 PILLE-ISS 剂量计的相对灵敏度变化率都不超过 (5-10)%。根据测量结果，2023 年宇航员在国际空间站舱外活动期间接收到的额外剂量在 (0.37-0.75) mGy（水中）范围内。国际空间站外的相应剂量率与以前安装在空间站外表面的其他剂量测定设备的读数一致。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Radiation Measurements 工程技术-核科学技术

CiteScore

4.10

自引率

20.00%

发文量

116

审稿时长

48 days

期刊介绍： The journal seeks to publish papers that present advances in the following areas: spontaneous and stimulated luminescence (including scintillating materials, thermoluminescence, and optically stimulated luminescence); electron spin resonance of natural and synthetic materials; the physics, design and performance of radiation measurements (including computational modelling such as electronic transport simulations); the novel basic aspects of radiation measurement in medical physics. Studies of energy-transfer phenomena, track physics and microdosimetry are also of interest to the journal. Applications relevant to the journal, particularly where they present novel detection techniques, novel analytical approaches or novel materials, include: personal dosimetry (including dosimetric quantities, active/electronic and passive monitoring techniques for photon, neutron and charged-particle exposures); environmental dosimetry (including methodological advances and predictive models related to radon, but generally excluding local survey results of radon where the main aim is to establish the radiation risk to populations); cosmic and high-energy radiation measurements (including dosimetry, space radiation effects, and single event upsets); dosimetry-based archaeological and Quaternary dating; dosimetry-based approaches to thermochronometry; accident and retrospective dosimetry (including activation detectors), and dosimetry and measurements related to medical applications.