International Topical Meeting on Nuclear Research Applications and Utilization of Accelerators
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AP/INT-02
Modern Status of Accelerators in R&D of Structural Materials for Nuclear Reactors V. Voyevodin and I. Neklyudov Kharkov Institute of Physics and Technology, Kharkov, Ukraine Corresponding Author: voyev@kipt.kharkov.ua Nuclear energy “renaissance” demands to perform research and development of materials which determine the safe and economical operation of running and developed nuclear facilities. Unfortunately structural materials in the nuclear power plants undergo degradation due to irradiation influence. Rate of degradation of nuclear materials tends to accelerate due to irradiation. High irradiation doses and temperatures planned for advanced fission and future fusion reactors will most certainly require the development of new improved materials. The cost of material testing under neutron irradiation for these advanced nuclear systems is continuously increasing while availability of test reactors is steadily decreasing. Last time irradiation possibilities were strongly decreased also due to the shut down of all spectra of nuclear facilities. The problem of material development for operation in unique conditions of irradiation and evaluation of their radiation resistance consists in the use of existing irradiation facilities for determination of mechanisms of radiation damage and selection of materials with high radiation resistance. Now simulation experiments are very useful for evaluation of radiation behaviour of materials, which work in different facilities with different spectral conditions. The main advantage of acceleratorsis not only the obtaining offast results about radiationproperties, but mainly possibility to understand basic mechanisms and separately investigate the influence of different factors on radiation damage. Selection of particles and energies allows researching of factors that can be studied directly under reactor irradiation. Now need todevelop technologiesfor analyzing andpredicting the behavior of nuclear materials as proactive safety management. It can be done by set up the correlation between radiation-induced defects and material degradation mechanism. It is necessary to say that now really exist a new era (also “renaissance”) for studies on ion-accelerators, with high-tech instrumentations and new philosophy. Understanding of radiation damage mechanism of nuclear materials and development of technology for estimating and predicting the radiation damage are main tasks for accelerators using. How these tasks are solved now and which instrumentation is useful and needed in ion simulation experiments is a topic of this presentation.
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