There is a global consensus among materials scientists and engineers that thequalification of materials in an appropriate test environment isindispensable for the design, construction and safe operation ofdemonstration fusion reactors as well as for the calibration of data generated from fission reactor and accelerator irradiations. In anevaluation process based on a series of technical workshops it wasconcluded that an accelerator driven D-Li stripping source would bethe best choice to fulfil the requirements within a realistic timeframe. In response to this need, an international design team withmembers from the European Union, Japan, the United States of America and the Russian Federation has developed, under theauspices of the International Energy Agency during a conceptual design activity phase(1994-1996), a suitable and feasible concept for an accelerator drivenD-Li stripping source. This reference design for the InternationalFusion Materials Irradiation Facility (IFMIF) is based onconservative linac technology and two parallel operating 125 mA,40 MeV deuteron beams that are focused onto a common liquid Litarget with a beam footprint of 50 mm by 200 mm. The materialstesting volume behind the Li target is subdivided into different fluxregions: the high flux test region (0.5 L, 20-55 dpa/full poweryear), the medium flux test region (6 L, 1-20 dpa/full power year), and the lowflux test region (>100 L, <1 dpa/full power year). The design developed was the basis for the conceptual design evaluation phase(1997-1998) and for subsequent engineering oriented activities. On the basis ofcomprehensive neutron transport calculations, an evaluation of theirradiation parameters and the available testing volumes has shown thatthe users' requirements can be fulfilled. Major engineering effortshave been undertaken to establish an IFMIF design that is based onavailable and already proven technologies. The design developedis based on extensive reliability, availability, maintainability andsafety studies and is conceived for long term operation with atotal annual facility availability of at least 70%.
材料科学家和工程师们普遍共识是，在适当的测试环境中对材料进行资格认证，对于示范聚变反应堆的设计、建造和安全运行以及对于裂变反应堆和加速器辐照产生的数据的校准都是不可或缺的。在一系列技术研讨会的基础上进行的评估过程中，得出结论：加速器驱动的D-Li剥离源将是在现实时间框架内满足要求的最佳选择。为响应这一需求，一个由来自欧盟、日本、美国和俄罗斯联邦的成员组成的国际设计团队，在国际能源机构的支持下，于概念设计活动阶段（1994-1996年）开发了一种可行且合适的加速器驱动D-Li剥离源概念。这一国际聚变材料辐照设施（IFMIF）的参考设计基于保守的直线加速器技术，以及两束平行的125 mA、40 MeV氘束，它们聚焦于一个共同的液态锂靶上，束斑尺寸为50 mm×200 mm。锂靶后方的材料测试体积被细分为不同的通量区域：高通量测试区（0.5 L，20-55 dpa/满功率年）、中通量测试区（6 L，1-20 dpa/满功率年）和低通量测试区（>100 L，<1 dpa/满功率年）。所开发的设计是概念设计评估阶段（1997-1998年）及后续工程导向活动的基础。基于全面的中子输运计算，对辐照参数和可用测试体积的评估表明，用户的要求可以得到满足。为建立基于现有且已证实技术的IFMIF设计，已开展了大量工程工作。所开发的设计基于广泛的可靠性、可用性、可维护性和安全性研究，并旨在长期运行，年总设施可用率至少达到70%。