Active discharging method for stable sub-micron sized beams of slow highly charged ions using tapered glass capillary with electrodes

30th International Conference on Photonic, Electronic, and Atomic Collisions

Ikeda, Tokihiro^1 ; Kojima, Takao M.^1 ; Natsume, Yoshio^2 ; Kimura, Jun^3 ; Abe, Tomoko^1

RIKEN, Nishina Center for Accelerator-Based Science, 2-1 Hirosawa, Wako, Saitama

351-0198, Japan^1

Electron Tube Division, Hamamatsu Photonics KK, 314-5 Shimokanzo, Shizuoka, Iwata

438-0193, Japan^2

Tokyo Branch Office, Hamamatsu Photonics KK, 3-8-21 Toranomon, Minato, Tokyo

105-0001, Japan^3

关键词: Glass capillaries;    Mechanical relays;    Slow highly charged ions;    Sub micron;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/875/12/112008/pdf
DOI  :  10.1088/1742-6596/875/12/112008

来源: IOP

【 摘 要 】

Stable transmission of a 0.75 μm-sized Ar8+beam of 10 100-keV energy through glass tandem optics was achieved. The optics consisted of a 4-electrode tapered capillary and a sub-μm-sized tapered capillary tip, arranged in series. To actively discharge the capillary, and thus obtain stable transmission, an electrode was applied with a mechanical relay closing at a 0.01 0.1 Hz frequency.