High-repetition rate solid target delivery system for PW-class laser-matter interaction at ELI Beamlines.
High-repetition rate solid target delivery system for PW-class laser-matter interaction at ELI Beamlines.
复制标题
ELI Beamlines 的高重复率固体目标传输系统可实现 PW 级激光与物质相互作用。
DOI：
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发表时间：
2021
影响因子：
1.6
通讯作者：
S. Weber
中科院分区：
文献类型：
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作者：
F. Condamine;N. Jourdain;J. Hernandez;M. Taylor;H. Bohlin;A. Fajstavr;T. Jeong;D. Kumar;T. Laštovička;O. Renner;S. Weber
ELI（Extreme Light Infrastructure）Beamlines的L3-HAPLS（高重复率高级拍瓦激光系统）目前以3.3 Hz重复率提供0.45 PW脉冲（27 fs中12 J）。每次射击的新靶面都使用内部胶带靶系统放置在激光焦点处，该系统设计用于承受大的激光强度和能量。它已被测试用于不同的材料厚度（25和7.6 µm），而L3-HAPLS提供的激光照射能量范围从1到12 J。文中给出了磁带靶系统的技术描述。该装置可用于激光-物质相互作用研究所需的各种几何形状，通过在赤道平面上提供300°的自由视角来观察目标。我们展示了实验数据，证明了该设备的射击稳定性。建立了X射线晶体球形谱仪来测量Kα产额稳定性，而GHz H场探针则用于检查逐枪电磁脉冲的产生。最后，我们讨论了短期和中期的未来改进的磁带目标系统，有效的用户操作。
L3-HAPLS (High-repetition-rate Advanced Petawatt Laser System) at ELI (Extreme Light Infrastructure) Beamlines currently delivers 0.45 PW pulses (12 J in 27 fs) at 3.3 Hz repetition rate. A fresh target surface for every shot was placed at the laser focus using an in-house tape target system designed to withstand large laser intensities and energies. It has been tested for different material thicknesses (25 and 7.6 µm), while L3-HAPLS delivered laser shots for energies ranging from 1 to 12 J. A technical description of the tape target system is given. The device can be used in diverse geometries needed for laser-matter interaction studies by providing an ≈300° free angle of view on the target in the equatorial plane. We show experimental data demonstrating the shot-to-shot stability of the device. An x-ray crystal spherical spectrometer was set up to measure the Kα yield stability, while a GHz H-field probe was used to check the shot-to-shot electromagnetic pulse generation. Finally, we discuss short and mid-term future improvements of the tape target system for efficient user operation.