一种减小香蕉气体探测器视差的静电透镜
An Electrostatic Lens to Reduce Parallax in Banana Gas Detectors
摘要：
圆柱形“香蕉”气体探测器通常用于固定目标实验，因为它们在赤道平面上没有视差效应。然而，为了更有效或覆盖更多立体角，增加这些检测器的高度的需求不断增长，因此视差效应开始限制该方向上的分辨率。在本文中，我们提出了一个硬件校正这个问题，减少了视差由于在前窗口上施加的电位，使静电场线径向指向在入口窗口的相互作用点。还提出了一个详细的解析分析的解决方案。
英文摘要：
Cylindrical "banana" gas detectors are often used in fixed-target experiments, because they are free of parallax effects in the equatorial plane. However, there is a growing demand to increase the height of these detectors in order to be more efficient or to cover more solid angle, and hence a parallax effect starts to limit the resolution in that direction. In this paper we propose a hardware correction for this problem which reduces the parallax error thanks to an applied potential on the front window that makes the electrostatic field lines radially pointing to the interaction point at the entrance window. A detailed analytical analysis of the solution is also presented.
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