Salgado-López Carlos, Apiñaniz Jon Imanol, Henares José Luis, Pérez-Hernández José Antonio, de Luis Diego, Volpe Luca, Gatti Giancarlo
Centro de Láseres Pulsados (CLPU), Edificio M5, Parque Científico USAL, C/Adaja, 8, 37185 Villamayor, Salamanca, Spain.
Sensors (Basel). 2022 Apr 22;22(9):3239. doi: 10.3390/s22093239.
This article reports the development, construction, and experimental test of an angle-resolved Thomson parabola (TP) spectrometer for laser-accelerated multi-MeV ion beams in order to distinguish between ionic species with different charge-to-mass ratio. High repetition rate (HHR) compatibility is guaranteed by the use of a microchannel plate (MCP) as active particle detector. The angular resolving power, which is achieved due to an array of entrance pinholes, can be simply adjusted by modifying the geometry of the experiment and/or the pinhole array itself. The analysis procedure allows for different ion traces to cross on the detector plane, which greatly enhances the flexibility and capabilities of the detector. A full characterization of the TP magnetic field is implemented into a relativistic code developed for the trajectory calculation of each pinhole beamlet. We describe the first test of the spectrometer at the 1PW VEGA 3 laser facility at CLPU, Salamanca (Spain), where up to 15MeV protons and carbon ions from a 3μm laser-irradiated Al foil are detected.
本文报道了一种用于激光加速多兆电子伏离子束的角分辨汤姆逊抛物线（TP）光谱仪的研制、构建及实验测试，目的是区分具有不同质荷比的离子种类。通过使用微通道板（MCP）作为有源粒子探测器，保证了高重复率（HHR）兼容性。由于入口针孔阵列实现的角分辨能力，可以通过修改实验几何结构和/或针孔阵列本身来简单调整。分析程序允许不同的离子轨迹在探测器平面上交叉，这大大提高了探测器的灵活性和能力。TP磁场的完整特性被纳入为每个针孔子束轨迹计算开发的相对论代码中。我们描述了该光谱仪在西班牙萨拉曼卡CLPU的1PW VEGA 3激光装置上的首次测试，在那里检测到了来自3μm激光辐照铝箔的高达15MeV的质子和碳离子。
