@article{oai:repo.qst.go.jp:00079962,
 author = {小島, 完興 and タンフン, ヂン and 長谷川, 登 and 森, 道昭 and 榊, 泰直 and 近藤, 康太郎 and Nishikino, Masaharu and Kondo, Kiminori and Kojima, Sadaoki and Dinh, Thanhhung and Hasegawa, Noboru and Mori, Michiaki and Sakaki, Hironao and Kondo, Kotaro and Nishikino, Masaharu and Kondo, Kiminori},
 journal = {Review of Scientific Instruments},
 month = {May},
 note = {This article reports the development of a compact Thomson parabola spectrometer for laser-accelerated ions that can measure angular distribution with a high energy resolution and has a variable measurable energy range. The angular-resolved energy spectra for different ion species  can be measured in a single shot, and the sampling angle can be selected from outside the vacuum region. The electric and magnetic fields  are applied to the ion dispersion by using a permanent magnetic circuit and annulus sector-shaped electrodes with a wedge configuration.  The compact magnetic circuit consists of permanent magnets, fixed yokes, and movable yokes. The magnetic flux is intentionally leaked to  the movable yokes, allowing the magnetic field to be adjusted from 53 mT to 259 mT. The annulus sector-shaped electrodes with a wedge  configuration provide better trace separation for high-energy ions, retain the lower-energy part of the ion signal, and subject ions passing  through all pinholes to an equivalent Lorentz force. The magnetic and electric fields are designed for measuring protons and carbon ions  with an energy range of 0.1–5 MeV. The spectrometer allows for the adjustment of the observable energy range afterward according to the  parameters of the accelerated ion.},
 pages = {1--11},
 title = {Compact Thomson parabola spectrometer  with variability of energy range and measurability  of angular distribution for low-energy laser-driven  accelerated ions},
 volume = {91},
 year = {2020}
}