| 电磁驱动超高速机械快门性能分析 |
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| 引用本文： | 秦义,席璐璘,褚衍运,蒙世坚,梁川.电磁驱动超高速机械快门性能分析[J].强激光与粒子束,2014,26(9):092001. |
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| 作者姓名： | 秦义 席璐璘 褚衍运 蒙世坚 梁川 |
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| 作者单位： | 1.中国工程物理研究院 核物理与化学研究所, 四川 绵阳 621 900; |
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| 基金项目： | 国家自然科学基金项目(11135007, 11305154) |
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| 摘 要： | 高温高密度等离子体辐射源产生脉冲X射线的同时还产生等离子体碎片,飞散速度分布在0.1~10km/s。研制电磁驱动超高速机械快门,有效通光孔径为40mm×50mm,利用45mm×60mm×100μm的铝膜作为快门叶片,在放电电压20kV、驱动电流80kA、放电周期18μs条件下,获得的快门关门时间小于180μs。将快门放置在距离等离子体X射线源2m处,X射线通过后在180μs时间内关闭光学通道,以阻挡高温高密度等离子体产生的碎片,保护X射线精密探测系统和样品,同时实现等离子体参数的精密测量。
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| 关 键 词： | 等离子体碎片 超高速机械快门 关门时间 X射线 |
| 收稿时间： | 2014/1/16 |
Performance of an electromagnetically driven fast shutter system for plasma debris |
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| Affiliation: | 1.Institute of Nuclear Physics and Chemistry,CAEP,P.O.Box 919-212,Mianyang 621900,China;2.Chengdu Aviation Vocational and Technical College,Chengdu 610100,China |
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| Abstract: | A radiation simulator utilizing plasma radiation sources will generate large amount of undesirable debris which can potentially damage the frangible diagnosing detectors and the objects under test. An electromagnetically driven fast shutter for purpose of debris mitigation is developed, which erects a physical barrier to slow down the moving debris after allowing the passage of X-ray photons. The shutter system consists of a pair of thin metallic foils twisting the parallel axes, which is imploded by an outer magnetic field generated by a fast capacitor discharging into a single turn loop. Typical capacitor bank charging voltage is 20 kV, with a corresponding current of 80 kA and a discharging current period of 18 microseconds. A closure time as fast as 180 microseconds is observed with the effective cross-sectional area of 40 mm50 mm. The design and operation of the shutter system are described along with the measured results of closure times. |
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| Keywords: | plasma debris fast shutter closure time X-ray |
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