Development of a Gas Distribution Measuring System for Gas Sheet Beam Profile Monitor
Development of a Gas Distribution Measuring System for Gas Sheet Beam Profile Monitor
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用于气体片束轮廓监测器的气体分布测量系统的开发
DOI：
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
M. Kinsho
中科院分区：
文献类型：
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作者：
I. Yamada;N. Ogiwara;Y. Hikichi;J. Kamiya;M. Kinsho
利用片状气体无损测量二维横向光束轮廓的监测系统正在开发中。为了获得正确的束流分布，测量气体密度分布是必不可少的，因为来自监视器的信号与束流强度和气体密度分布成正比。研制了一种探测气体与电子束相互作用产生的离子的气体三维分布测量系统。该系统由用于产生理想窄束的电子枪、用于形成平行电场的电极、微通道板和荧光屏组成。通过考虑热速度和气体分子的中间或粘性流动的影响，很好地解释了测量的离子分布。
The monitor system with sheet-shaped gas to non-destructively measure a two-dimensional transverse beam profile is under development. To obtain a correct beam profile, measurement of the gas density distribution is indispensable because the signal from the monitor is in proportional to both the beam intensity and the gas density distribution. A measurement system for three-dimensional gas distribution which detects ions produced by interaction between gas and electron beam has been developed. The system consists of an electron gun for producing ideal narrow beam, electrodes to form a parallel electric field toward a detector, a micro-channel plate and a phosphor screen. Measured ion distribution was well explained by considering the effects of the thermal velocity and the middle or viscos flow of the gas molecules.