A multi-shot target-wheel assembly for high-repetition-rate, laser-driven proton acceleration
High Power Laser Science and Engineering(2024)
摘要
A multi-shot target assembly and automatic alignment procedure for
laser-plasma proton acceleration at high-repetition-rate are introduced. The
assembly is based on a multi-target rotating wheel capable of hosting >5000
targets, mounted on a three-dimensional motorised stage to allow rapid
replenishment and alignment of the target material between laser irradiations.
The automatic alignment procedure consists of a detailed mapping of the impact
positions at the target surface prior to the irradiation that ensures stable
operation of the target, which alongside the purpose-built design of the target
wheel, enable the operation at rates up to 10 Hz. Stable and continuous
laser-driven proton acceleration is demonstrated, with observed cut-off energy
stability about 15
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关键词
target assembly,proton source,laser-plasma acceleration,multi-shot operation,high repetition rate
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