Toward Superconducting Electron Accelerators for Various Applications

研究成果: Article査読

1 被引用数 (Scopus)

抄録

A 300 MeV electron linac is constructed in 1967 at Tohoku University for advanced research on nuclear physics, radiochemistry and neutron science. A very high beam repetition rate of 300 pps is employed to achieve a duty factor of more than 0.1%. Although substantial parts of the linac sadly collapsed as a result of the Great East Japan earthquake occurred in 2011, the low-energy part of the linac still supplies high-intensity beams. To expand current research activities, the introduction of a versatile accelerator system that employs superconducting radiofrequency (SRF) cavities have been considered. Because the low surface resistance on these SRF cavities decreases the power dissipated to the cavity 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 to be operated at cryogenic temperatures of 2 K with a considerably large cryogenic system. Recently it is pointed out that the large heat load could be greatly lowered by replacing the standard Nb cavities with those coated with high-temperature superconductors. The possibility of developing simple and low-cost SRF accelerators based on conduction cooling with a 4 K refrigerator system is anticipated.

本文言語English
論文番号2000294
ジャーナルPhysica Status Solidi (A) Applications and Materials Science
218
1
DOI
出版ステータスPublished - 2021 1月

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • 表面および界面
  • 表面、皮膜および薄膜
  • 電子工学および電気工学
  • 材料化学

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