title: Experimental results of an electron cyclotron resonance oxygen source and a low energy beam transport system for 1 MeV integral split ring radio frequency quadruple accelerator upgrade project.
abstract: To meet the requirements of developing separated function radio frequency quadruple (rfq) and upgrading the 1 MeV integral split ring rfq accelerator, an electron cyclotron resonance O(+) ion source and low energy beam transport (LEBT) system have been developed. Using two Einzel lenses to focus the beam, more than 6 mA O(+) peak beam current with energy of 22 keV can be easily obtained at the end of LEBT when the duty faction is at 1/6. The normalized root-mean-square emittance of 90% of the beam is about 0.12pi mm mrad. By changing the focusing power of lenses, the beam waist can be shifted from 80 mm before the beam diaphragm 2 to 80 mm after it. The experimental results will be presented in this article.
authors.affiliation: State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing, China. sxpeng@pku.edu.cn
authors.forename: S X
authors.initials: SX
authors.lastname: Peng
authors.forename: M
authors.initials: M
authors.lastname: Zhang
authors.forename: Z Z
authors.initials: ZZ
authors.lastname: Song
authors.forename: R
authors.initials: R
authors.lastname: Xu
authors.forename: J
authors.initials: J
authors.lastname: Zhao
authors.forename: Z X
authors.initials: ZX
authors.lastname: Yuan
authors.forename: J X
authors.initials: JX
authors.lastname: Yu
authors.forename: J
authors.initials: J
authors.lastname: Chen
authors.forename: Z Y
authors.initials: ZY
authors.lastname: Guo