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首页> 外文会议>Positron and positronium chemistry X >Design and Simulation of a Trap-based Pulsed Slow Positron Beam
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Design and Simulation of a Trap-based Pulsed Slow Positron Beam

机译：基于阱的脉冲慢正电子束的设计与仿真

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摘要

A simple pulsed slow positron beam based on a Penning-trap has been designed and is being constructed in Wuhan University. The cooled positrons from the trap with very low energy dispersion are dumped and chopped to pulses of a few tens of ns in width. Positron pulses are bunched by adjusting the potential of drift tube using an arbitrary wave generator, then accelerated to the target. Influences of the pulse width, the energy dispersion of positrons etc. on the time resolution of bunched positron pulse are simulated. The result shows that lower energy dispersion of positrons leads to much narrower positron pulses, indicating that a trap-based slow positron beam has a great advantage in developing a pulsed slow positron beam.
机译：已经设计了一种基于Penning阱的简单脉冲慢正电子束，该结构正在武汉大学建造。来自阱的具有极低能量分散的冷却正电子被倾倒并切碎成宽度为几十ns的脉冲。通过使用任意波发生器调节漂移管的电势来使正电子脉冲成束，然后加速至目标。模拟了脉冲宽度，正电子的能量色散等对成束正电子脉冲时间分辨率的影响。结果表明，较低的正电子能量色散导致更窄的正电子脉冲，表明基于陷阱的慢正电子束在产生脉冲慢正电子束方面具有很大的优势。

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  • 来源
  • 会议地点 Smolenice Castle(SK)
  • 作者

    Chunqing He; Juncheng Wang; Jun Zhu; Shaojie Wang;

  • 作者单位

    Key Lab of Nuclear Solid Physics Hubei Province, School of Physics and Technology, Wuhan University, Wuhan 430072, China;

    Key Lab of Nuclear Solid Physics Hubei Province, School of Physics and Technology, Wuhan University, Wuhan 430072, China;

    Key Lab of Nuclear Solid Physics Hubei Province, School of Physics and Technology, Wuhan University, Wuhan 430072, China;

    Key Lab of Nuclear Solid Physics Hubei Province, School of Physics and Technology, Wuhan University, Wuhan 430072, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    slow positron beam; bunching; energy dispersion; time resolution; trap;

    机译：慢正电子束聚束能量色散时间分辨率；陷阱;;

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