title: Results of RIKEN superconducting electron cyclotron resonance ion source with 28 GHz.
abstract: We measured the beam intensity of highly charged heavy ions and x-ray heat load for RIKEN superconducting electron cyclotron resonance ion source with 28 GHz microwaves under the various conditions. The beam intensity of Xe(20+) became maximum at B(min) ∼ 0.65 T, which was ∼65% of the magnetic field strength of electron cyclotron resonance (B(ECR)) for 28 GHz microwaves. We observed that the heat load of x-ray increased with decreasing gas pressure and field gradient at resonance zone. It seems that the beam intensity of highly charged heavy ions with 28 GHz is higher than that with 18 GHz at same RF power.
authors.affiliation: RIKEN Nishina Center, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan. higurasi@riken.jp
authors.forename: Y
authors.initials: Y
authors.lastname: Higurashi
authors.forename: J
authors.initials: J
authors.lastname: Ohnishi
authors.forename: T
authors.initials: T
authors.lastname: Nakagawa
authors.forename: H
authors.initials: H
authors.lastname: Haba
authors.forename: M
authors.initials: M
authors.lastname: Tamura
authors.forename: T
authors.initials: T
authors.lastname: Aihara
authors.forename: M
authors.initials: M
authors.lastname: Fujimaki
authors.forename: M
authors.initials: M
authors.lastname: Komiyama
authors.forename: A
authors.initials: A
authors.lastname: Uchiyama
authors.forename: O
authors.initials: O
authors.lastname: Kamigaito