A real-sized start-up monitoring module prototype for comprehensive test and irradiation campaigns of miniaturized neutron detectors according to the IFMIF-DONES baseline

IF 2.3 2区物理与天体物理 Q1 NUCLEAR SCIENCE & TECHNOLOGY Nuclear Materials and Energy Pub Date : 2024-07-23 DOI:10.1016/j.nme.2024.101712

Santiago Becerril-Jarque , Álvaro Marchena , Andrés Roldán Aranda , Pablo Araya , Roberto García Baonza , Agustín García , Jorge Aguilar , Luis Fernández , Urszula Wiacek , Rafal Prokopowicz , Jesús Castellanos , David Rapisarda

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Abstract

The key system to know the neutron and gamma fields during the commissioning at IFMIF-DONES facility will be the STart-Up Monitoring Module (STUMM), which will include tens of very sophisticated and miniaturised detectors providing crucial information about the radiation fields. In particular, there will be MFCs (micro-fission chambers), ICs (Ionisation Chambers), SPNDs (Self-Powered Neutron Devices) and GTs (Gamma Thermometers).

The current state-of-the-art does not provide answers about the performance of the detectors in the very specific working conditions inside the IFMIF-DONES Test Cell, as a very high spatial density of detectors inside the STUMM vessel, an extremely harsh environment with neutron flux up to 5·10¹⁴n/cm²/s and the need of long mineral cables (>30 m) to drive the very weak current signals from the irradiation area to the closest electronics cubicles available in the facility.

Except for the extremely high neutron flux provided by IFMIF-DONES, all the other very critical conditions can be replicated by means of a 1:1 scaled prototype of the STUMM (STUMM-PROTO), which will be subjected to comprehensive testing and irradiation campaigns in order to increase the knowledge about the performance of the detectors above mentioned.

The present work shows the wide range of capabilities offered by STUMM-PROTO as well as the current status of its construction and some first notions about the experimental campaigns to be implemented.

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用于根据 IFMIF-DONES 基准对微型中子探测器进行全面测试和辐照活动的实际尺寸启动监测模块原型

在 IFMIF-DONES 调试期间，了解中子和伽马场的关键系统是启动监测模块（STUMM），其中包括数十个非常精密的微型探测器，提供有关辐射场的重要信息。特别是 MFC（微裂变室）、IC（电离室）、SPND（自供电中子设备）和 GT（伽马温度计）。由于 STUMM 容器内探测器的空间密度非常高，环境极其恶劣，中子通量高达 5-1014n/cm2/s，而且需要用长矿物电缆（30 米）将非常微弱的电流信号从辐照区传输到设施内最近的电子设备间，因此，目前的先进技术无法解释探测器在 IFMIF-DONES 试验舱内非常特殊的工作条件下的性能。除了IFMIF-DONES提供的极高中子通量外，所有其他非常关键的条件都可以通过一个1:1比例的STUMM原型（STUMM-PROTO）来复制，该原型将接受全面的测试和辐照活动，以增加对上述探测器性能的了解。

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

Nuclear Materials and Energy Materials Science-Materials Science (miscellaneous)

CiteScore

3.70

自引率

15.40%

发文量

175

审稿时长

20 weeks

期刊介绍： The open-access journal Nuclear Materials and Energy is devoted to the growing field of research for material application in the production of nuclear energy. Nuclear Materials and Energy publishes original research articles of up to 6 pages in length.