Development of High Resolution Radiation Detector Using Liquid Xenon

在这里，我们开发了一种使用液态氙的创新闪烁伽马射线探测器，在基础科学领域推动划时代的进步，在这些领域，精确测量能量为数百keV到数十MeV的伽马射线是必不可少的。在成功开发了在液氙温度（-lOOC）下对氙的紫外闪烁光（波长为178nm）敏感的光电倍增管、在液氙温度下有效工作的脉冲管制冷机、去除少量污染物以吸收紫外线的液氙净化系统之后，我们建造了一个100升的探测器，并进行了各种性能测试。建立了稳定、长期的运行。利用激光康普顿散射产生的高能伽玛射线在电子存储环上，成功地证明了它在能量时间和伽玛射线位置上的优异分辨率。这种检测器在PET上的应用也很有前景。人们期待着更高能量的进一步发展。

Here we have developed an innovative scintillation gamma-ray detector using liquid xenon to prompt epoch-making progress in the fields of fundamental science where precise measurements of gamma-rays with energies of hundreds of keV to tens of MeV are essential. After successful developments of photomultipliers that are sensitive to ultraviolet scintillation light of xenon (a wavelength of 178nm) under liquid xenon temperature (-lOOC), a pulse tube refrigerator that works efficiently at liquid xenon temperature, and a liquid xenon purification system to remove a small contamination to absorb the ultraviolet light, a 100-liter detector was build and subjected to various performance tests. A stable, long-term operation was established. Using high energy gamma-rays from laser Compton scatterings at an electron storage ring, its excellent resolutions in energy time, and position of gamma-rays were successfully demonstrated. Application of this detector to PET also seems promising. A further development for higher energies is expected.