A liquid-helium-free superconducting coil system forming a flat minimum-magnetic-field distribution of an electron

Ken-ichi Yoshida1, Takayuki Nara1, Yuichi Saitoh1

  • 1Takasaki Advanced Radiation Research Institute, Japan Atomic Energy Agency, 1233 Watanuki, Takasaki, Gunma 370-1292, Japan.

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