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arXiv · 1906.10927

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

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

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 $W^{14+}$.

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Shiyong Liang, Qifeng Lu, Xincheng Wang, Yang Yang, Ke Yao, Yang Shen, Baoren Wei, Jun Xiao, Shaolong Chen, Pengpeng Zhou, Wei Sun, Yonghui Zhang, Yao Huang, Hua Guan, Xin Tong, Chengbin Li, Yaming Zou, Tingyun Shi, Kelin Gao. 2019-09-07. A low-energy compact Shanghai-Wuhan electron beam ion trap for extraction of highly charged ions. https://doi.org/10.1063/1.5112154

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