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Development of a real-time ion spectrometer with a scintillator for laser-driven ion acceleration experiments

Miao-Hua, Xu and Hong-Wei, Li and Bi-Cheng, Liu and Feng, Liu and Lu-Ning, Su and Fei, Du and Lu, Zhang and Yi, Zheng and Ma Jing-Long, Missing and Neely, David and McKenna, Paul and Zhao-Hua, Wang and Zhi-Yi, Wei and Xue-Qing, Yan and Yu-Tong, Li and Ying-Jun, Li and Jie, Zhang (2011) Development of a real-time ion spectrometer with a scintillator for laser-driven ion acceleration experiments. Chinese Physics Letters, 28 (9). ISSN 0256-307X

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Abstract

A real-time ion spectrometer mainly based on a high-resolution Thomson parabola and a plastic scintillator is designed and developed. The spectrometer is calibrated by protons from an electrostatic accelerator. The feasibility and reliability of the diagnostics are demonstrated in laser-driven ion acceleration experiments performed on the XL-II laser facility. The proton spectrum extrapolated from the scintillator data is in excellent agreement with the CR39 spectrum in terms of beam temperature and the cutoff energy. This real-time spectrometer allows an online measurement of the ion spectra in single shot, which enables efficient and statistical studies and applications in high-repetition-rate laser acceleration experiments.