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A multi-shot target wheel assembly for high-repetition-rate, laser-driven proton acceleration
oleh: J. Peñas, A. Bembibre, D. Cortina-Gil, L. Martín, A. Reija, C. Ruiz, M. Seimetz, A. Alejo, J. Benlliure
Format: | Article |
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Diterbitkan: | Cambridge University Press 2024-01-01 |
Deskripsi
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 more than 5000 targets, mounted on a 3D motorized 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, enables operation at rates up to 10 Hz. Stable and continuous laser-driven proton acceleration at 10 Hz is demonstrated, with observed cut-off energy stability about 15%.