A Scintillator Detector for Spatiospectral Characterization of Proton Beams at High Repetition Rate

We present the experimental results of a 2-D scintillator-based detector developed at the Centro de Laseres Pulsados (CLPU) aiming at the spatiospectral characterization of proton beams driven by ultrarelativistic laser pulses at a high repetition rate (HRR). We report its implementation in laser-driven proton acceleration at the VEGA (CLPU) laser facility to demonstrate its operation. The analysis of the obtained results shows the relevance of the presented diagnostic for HRR acquisition of laser-driven proton sources promoting it as an essential tool for large parametric studies in the emerging field of laser-driven accelerators. A validation of the spectral and divergence reconstruction method is also presented together with the scintillator calibration performed at the conventional accelerator Centro de Micro-Análisis de Materiales (CMAM) in Madrid, Spain.