Uncertainty in intense pulse electron beam position monitor
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摘要: 根据探测器测量原理和标定方法、特点,分析其位置测量的不确定度主要来源于测量过程的A类不确定度、B类不确定度和最小二乘法引入的拟合不确定度,确定了各个不确定度的计算方法,得到了探测器的合成不确定度,对于应用于神龙二号直线感应加速器的电阻环和磁探测器,其合成不确定度约为0.1 mm。Abstract: Beam position as a key parameter of intense electron beam linear induction accelerator,is criterion of electron beam tuning and experiment. The resistive ring monitor(RRM) and B-dot monitor are often used to measure the beam current and position simultaneously. According to the measuring principle, the calibration method and characters of monitor, type A and type B standard uncertainties and least square fit uncertainty were analyzed as the uncertainty sources of beam position monitors RRM and B-dot, and their evaluation were decided. The combined standard uncertainty of Dragon- resistive ring monitor and B-dot is less than 0.1mm based on calibrating data.
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Key words:
- pulse /
- electron beam /
- beam position /
- measurement /
- calibration /
- uncertainty
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