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Report No.

Development of superconducting spoke cavity for electron accelerator in Japan

Sawamura, Masaru; Hajima, Ryoichi; Nagai, Ryoji; Nishimori, Nobuyuki; Kubo, Takayuki*; Saeki, Takayuki*; Cenni, E.*; Fujisawa, Hiroshi*; Iwashita, Yoshihisa*; Tongu, Hiromu*

We have launched a 5-year research program to develop superconducting spoke cavity for laser Compton scattered (LCS) photon sources combined with an energy-recovery linac and a laser. For realizing a wide use of LCS X-ray and $$gamma$$-ray sources in academic and industrial applications, we adopt a 325-MHz superconducting spoke cavity to electron beam drivers. The spoke cavity has advantages over the elliptical cavity to adopt for our proposing system. Design optimization calculation of the spoke cavity shape is being carried out using 3D electro-magnetic field simulation code with multi-objective genetic algorithm. Current progress of mechanical and fabrication design will be also presented.



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