| Autor: |
Minami T; Graduate School of Engineering, Osaka University, Osaka 565-0871, Japan., Tokiyasu AO; Research Center for Electron Photon Science, Tohoku University, Miyagi 982-0826, Japan., Kohri H; Research Center for Nuclear Physics, Osaka University, Osaka 567-0047, Japan., Abe Y; Graduate School of Engineering, Osaka University, Osaka 565-0871, Japan., Iwasaki K; Graduate School of Engineering, Osaka University, Osaka 565-0871, Japan., Taguchi T; Graduate School of Engineering, Osaka University, Osaka 565-0871, Japan., Oda K; Graduate School of Engineering, Osaka University, Osaka 565-0871, Japan., Suzuki S; Graduate School of Engineering, Osaka University, Osaka 565-0871, Japan., Asai T; Kansai Photon Science Institute (KPSI), National Institutes for Quantum Science and Technology (QST), Kyoto 619-0215, Japan., Tanaka SJ; Graduate School of Engineering, Osaka University, Osaka 565-0871, Japan., Isayama S; Faculty of Engineering Sciences, Kyushu University, 6-1 Kasuga-Koen, Kasuga, Fukuoka 816-8580, Japan., Kanasaki M; Graduate School of Maritime Sciences, Kobe University, Hyogo 658-0022, Japan., Kodaira S; National Institute of Radiological Sciences (NIRS), National Institutes for Quantum Science and Technology (QST), Chiba 263-8555, Japan., Fukuda Y; Kansai Photon Science Institute (KPSI), National Institutes for Quantum Science and Technology (QST), Kyoto 619-0215, Japan., Kuramitsu Y; Graduate School of Engineering, Osaka University, Osaka 565-0871, Japan. |
| Abstrakt: |
Particle counting analysis is a possible way to characterize GeV-scale, multi-species ions produced in laser-driven experiments. We present a multi-layered scintillation detector to differentiate multi-species ions of different masses and energies. The proposed detector concept offers potential advantages over conventional diagnostics in terms of (1) high sensitivity to GeV ions, (2) realtime analysis, and (3) the ability to differentiate ions with the same charge-to-mass ratio. A novel choice of multiple scintillators with different ion stopping powers results in a significant difference in energy deposition between the scintillators, allowing accurate particle identification in the GeV range. Here, we report a successful demonstration of particle identification for heavy ions, performed at the Heavy Ion Medical Accelerator in Chiba. In the experiment, the proposed detector setup showed the ability to differentiate particles with similar atomic numbers, such as C 6+ and O 8+ ions, and provided an excellent energy resolution of 0.41%-1.2% (including relativistic effect, 0.51%--1.6%). |
