摘要
Real-time evaluation of laser-driven byproducts is crucial for state-of-the-art facilities operating at high repetition rates.This work presents real-time measurements of hard X-rays(bremsstrahlung radiation) generated from the interaction of high-intensity laser pulses with solid targets in the target normal sheath acceleration regime using a scintillator stack detector. The detector offers insights into the effectiveness of laser–plasma interaction through measured fiuctuations in bremsstrahlung radiation temperature and scintillation light yield on a shot-to-shot basis. Moreover, a strong correlation of the bremsstrahlung measurements(i.e., temperature and yield) with the cutoff energy of laser-driven protons was observed. The scintillator stack detector serves not only as a diagnostic for online monitoring of the laser–plasma interaction but also as a promising tool for estimating proton energy fiuctuations in a non-disruptive manner, which is particularly important when direct proton source characterization is impractical, for example, during experiments aimed at irradiating user samples with the accelerated proton beam.
基金
the ELIMAIA experimental team and the L3-HAPLS laser team for the support provided during the experiment
funded by the Ministry of Education, Youth and Sports of the Czech Republic by the project ‘Advanced Research Using High Intensity Laser Produced Photons and Particles’ (CZ.02.1.01/0.0/0.0/16_019/0000789)
supported by the European Structural and Investment Fund and the Czech Ministry of Education, Youth and Sports (Project International mobility MSCA-IF IV FZUCZ.02.2.69/0.0/0.0/20-079/0017754)。
