研究目的
To describe the design and fabrication of gas cell microtargets for academic access experiments on the Orion laser facility, focusing on the assembly processes, thin film requirements, and micro-machining processes needed to produce the targets, as well as the implementation of a gas-fill system.
研究成果
The development of new target fabrication techniques has enhanced the capabilities available for academic access experiments on the Orion laser facility, contributing to a highly successful campaign. Further work is planned to enhance the quality of gas cell targets for experiments with other geometries.
研究不足
The challenges included maintaining the integrity of the target under pressure, ensuring the correct laser interaction plane despite foil deflection, and achieving stable pressure levels for up to 2 hours in the Orion chamber.
1：Experimental Design and Method Selection:
The design involved the fabrication of a precision machined cell with apertures for interaction foils or diagnostic windows, gas-filled before laser irradiation.
2：Sample Selection and Data Sources:
Targets were filled with argon, neon, krypton, or xenon to pressures ranging from
3：1 to 1 bar. List of Experimental Equipment and Materials:
Included a CNC micro-mill for machining the gas cell from aluminium, polyimide plastic for X-ray windows, and brominated plastic disks.
4：Experimental Procedures and Operational Workflow:
Involved the assembly of the gas cell, adherence of windows and foils, and gas filling.
5：Data Analysis Methods:
Monitoring of pressure transducers allowed a leak test to be performed, and imaging of the target windows allowed for a deflection test.
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