Optical transition radiation beam emittance diagnostics
Optical transition radiation beam emittance diagnostics
复制标题
光跃迁辐射束发射诊断
DOI：
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发表时间：
1993
期刊：
影响因子：
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通讯作者：
D. Rule
中科院分区：
文献类型：
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作者：
R. Fiorito;D. Rule
我们开发了多种分析和实验技术来测量带电粒子束的发散度和发射率，这些技术采用薄拦截箔产生的光跃迁辐射 (OTR)。 OTR 的方向性、及时性、线性、偏振及其角度分布对能量和发散的敏感性都可以用来诊断带电粒子束的空间分布、能量和发射率。我们描述了我们开发的技术，用于使用来自单箔或两箔 OTR 干涉仪的 OTR 分别确定 x 或 y 腰部光束的 x 和 y 发射率。事实证明，这些方法对于诊断 FEL 加速器产生的低发射电子束（能量范围为 17 至 110 Mev）特别有价值。然而，我们已经证明，这些方法对于高能量轻子或强子束的实用性没有固有的理论限制。与常用诊断方法相比，OTR 方法的优点...
We have developed several analytic and experimental techniques to measure the divergence and emittance of charged particle beams, which employ optical transition radiation (OTR) produced from thin intercepting foils. OTR’s directionality, promptness, linearity, polarization, and the sensitivity of its angular distribution to energy and divergence, can be all exploited to diagnose the spatial distribution, energy, and emittance of a charged particle beam. We describe the techniques we have developed to separately determine the x and y emittances of a beam at an x or y waist using OTR from a single foil or a two foil OTR interferometer. These methods have proven to be especially valuable for diagnosing low emittance electron beams produced by FEL accelerators, which range in energy from 17 to 110 Mev. However, we have shown that there is no inherent theoretical limit to the utility of these methods for much higher energy lepton or hadron beams. The advantages of OTR methods over those commonly used to diagn...