A low-energy compact Shanghai-Wuhan electron beam ion trap for extraction of highly charged ions

Liang, Shiyong; Lu, Qifeng; Wang, Xincheng; Yang, Yang; Yao, Ke; Shen, Yang; Wei, Baoren; Xiao, Jun ✉; Chen, Shaolong; Zhou, Pengpeng; Sun, Wei; Zhang, Yonghui; Huang, Yao; Guan, Hua ✉; Tong, Xin; Li, Chengbin; Zou, Yaming; Shi, Tingyun; Gao, Kelin

English Scientific Article (Journal Article)
Published: REVIEW OF SCIENTIFIC INSTRUMENTS 0034-6748 1089-7623 90 (9) Paper: 093301 , 7 p. 2019
  • SJR Scopus - Instrumentation: Q2
    A low-energy, compact, and superconducting electron beam ion trap (the Shanghai-Wuhan EBIT or SW-EBIT) for extraction of highly charged ions is presented. The magnetic field in the central drift tube of the SW-EBIT is approximately 0.21 T produced by a pair of high-temperature superconducting coils. The electron-beam energy of the SW-EBIT is in the range of 30-4000 eV, and the maximum electron-beam current is up to 9 mA. Acting as a source of highly charged ions, the ion-beam optics for extraction is integrated, including an ion extractor and an einzel lens. A Wien filter is then used to measure the charge-state distribution of the extracted ions. In this work, the tungsten ions below the charge state of 15 have been produced, extracted, and analyzed. The charge-state distributions and spectra in the range of 530-580 nm of tungsten ions have been measured simultaneously with the electron-beam energy of 279 eV and 300 eV, which preliminarily indicates that the 549.9 nm line comes from W14+.
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    2021-12-05 07:20