A two-dimensional angular-resolved proton spectrometer

Yang, Su and Yuan, Xiaohui and Fang, Yuan and Ge, Xulei and Deng, Yanqing and Wei, Wenqing and Gao, Jian and Fu, Feichao and Jiang, Tao and Liao, Guoqian and Liu, Feng and Chen, Min and Li, Yutong and Zhao, Li and Ma, Yanyun and Sheng, Zhengming and Zhang, Jie (2016) A two-dimensional angular-resolved proton spectrometer. Review of Scientific Instruments, 87 (10). 103301. ISSN 0034-6748 (https://doi.org/10.1063/1.4963706)

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We present a novel design of two-dimensional (2D) angular-resolved spectrometer for full beam characterization of ultrashort intense laser driven proton sources. A rotated 2D pinhole array was employed, as selective entrance before a pair of parallel permanent magnets, to sample the full proton beam into discrete beamlets. The proton beamlets are subsequently dispersed without overlapping onto a planar detector. Representative experimental result of protons generated from femtosecond intense laser interaction with thin foil target is presented.