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首页> 外文期刊>Physica status solidi >Toward Superconducting Electron Accelerators for Various Applications
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Toward Superconducting Electron Accelerators for Various Applications

机译：用于各种应用的超导电子促进剂

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A 300 MeV electron linac is constructed in 1967 at Tohoku University foradvanced research on nuclear physics, radiochemistry and neutron science. Avery high beam repetition rate of 300 pps is employed to achieve a duty factor ofmore than 0.1%. Although substantial parts of the linac sadly collapsed as aresult of the Great East Japan earthquake occurred in 2011, the low-energy part ofthe linac still supplies high-intensity beams. To expand current research activities,the introduction of a versatile accelerator system that employs superconductingradiofrequency (SRF) cavities have been considered. Because the lowsurface resistance on these SRF cavities decreases the power dissipated to thecavity walls, the beams can be accelerated with a duty factor as high as 100%.However, the SRF cavities, which are manufactured from niobium (Nb), need tobe operated at cryogenic temperatures of 2 K with a considerably large cryogenicsystem. Recently it is pointed out that the large heat load could be greatly loweredby replacing the standard Nb cavities with those coated with high-temperaturesuperconductors. The possibility of developing simple and low-cost SRF acceleratorsbased on conduction cooling with a 4 K refrigerator system is anticipated.
机译：300 Mev Electron Linac于1967年在Tohoku大学建造核物理学，放射化学与中子科学的高级研究。一种使用300 pps的非常高的光束重复率来达到占空比超过0.1％。虽然Linac的大量部分可悲的是崩溃为大东日本地震发生的结果2011年发生，低能源部分Linac仍然提供高强度光束。扩大当前的研究活动，推出采用超导的多功能加速器系统已经考虑了射频（SRF）腔。因为低这些SRF腔的表面电阻降低了散发的功率腔壁，光束可以加速，占用因子高达100％。然而，由铌（NB）制造的SRF腔需要在2 k的低温温度下操作，具有相当大的低温系统。最近指出的是，大量热负荷可能会大大降低通过用涂有高温的那些替换标准NB空腔超导体。开发简单和低成本的SRF加速器的可能性预计基于带有4 k冰箱系统的导通冷却。

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