A method to reduce the parallax error of multiwire proportional chambers
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摘要: 通过模拟研究，找到了一种采用非均匀电极高压来改善探测器视差效应的方法；考察了该方法对多丝正比室的电子收集效率、增益一致性等性能的影响。结果表明:该方法可以显著减小探测器的视差效应，不会影响探测器的电子收集效率，引起的阳极丝增益一致性的变化也基本不会对探测器的总体性能造成影响。Abstract: An method the reduce the parallax error of multi-wire proportional chambers (MWPCs) was introduced. The principle of the parallax error reduction is to divide the electrode planes of the detector into a series of small units, and the potential of each unit was set according to its distance to the sample position. Calculation shows that the method can significantly reduce the parallax error of MWPCs, and almost not deteriorate of the detectors primary electron collection efficiency and gain uniformity of the anode plane.
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Key words:
- multiwire proportional chambers /
- parallax error /
- non-uniform electrode /
- simulation
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