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Neutronic analysis of IFMIF-DONES test cell cooling system.
Applied Radiation and Isotopes ( IF 1.6 ) Pub Date : 2020-04-29 , DOI: 10.1016/j.apradiso.2020.109207
Gediminas Stankunas 1 , Andrius Tidikas 1
Affiliation  

IFMIF-DONES (International Fusion Materials Irradiation Facility – DEMO-Oriented Neutron Source) is an accelerator based d-Li neutron source currently under development within the framework of EUROfusion Power Plant and Technology (PPPT) programme. The purpose of the IFMIF-DONES device is to qualify promising materials for the future fusion technologies. The neutron source is designed to produce high energy neutron emission comparable to large scale nuclear fusion reactors running with deuterium and tritium fuel. Test Cell (TC) is a section of accelerator facility where material specimens are being irradiated. Neutron irradiation affects not only specimens, but also supporting structures and confinement that include steel liner and the water-cooled concrete walls. The neutron induced activation and subsequent decay heat generation of the cooling pipes needs to be assessed for the maintenance, decommissioning and waste management purposes and related safety analyses. This paper presents the analyses performed within the ENS (Early Neutron Source) project of EUROfusion/PPPT with an aim to provide up-to-date estimates of the activity inventories and the decay heat generation in the DONES TC facility shielding wall and pipes. A series of coupled MCNP particle transport and FISPACT inventory calculations were performed using the 2017 DONES TC model and nuclear cross-section data from the JEFF-3.1.2 data library. The paper discusses activation characteristics propagated by neutron irradiation in the biological shielding cooling system. Activities, decay heat, dose rates are presented as function of the decay time after irradiation.



中文翻译:

IFMIF-DONES测试电池冷却系统的中性分析。

IFMIF-DONES(国际聚变材料辐照设施-面向DEMO的中子源)是基于加速器的d-Li中子源,目前正在EUROfusion电厂和技术(PPPT)计划的框架内开发。IFMIF-DONES设备的目的是为未来的融合技术鉴定有前途的材料。中子源被设计为产生高能量中子发射,可与使用氘和tri燃料的大规模核聚变反应堆相媲美。测试室(TC)是加速器设备的一部分,正在照射材料样本。中子辐照不仅影响标本,还影响包括钢衬和水冷混凝土墙在内的支撑结构和约束。为了维护,退役和废物管理的目的以及相关的安全性分析,需要评估中子引起的冷却管的活化以及随后产生的衰变热。本文介绍了在EUROfusion / PPPT的ENS(早期中子源)项目中进行的分析,目的是提供对DONES TC设施屏蔽墙和管道中的活动清单和衰减热量的最新估算。使用2017 DONES TC模型和JEFF-3.1.2数据库中的核横截面数据进行了一系列耦合的MCNP粒子传输和FISPACT清单计算。本文讨论了中子辐照在生物屏蔽冷却系统中传播的活化特性。活动,衰减热量,

更新日期:2020-04-29
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