在位高压生成与科克罗夫特-沃尔顿乘法器用于氙气时间投影室
In-situ high voltage generation with Cockcroft-Walton multiplier for xenon gas time projection chamber
AI总结：
本文提出利用科克罗夫特-沃尔顿乘法器在位生成高压，用于氙气时间投影室，提升其在高压力下运行的电子噪声抑制能力，并实现高能量分辨率。
摘要：
我们开发了一种新的科克罗夫特-沃尔顿（CW）乘法器，可用于气体时间投影室（TPC）。TPC需要高压电场来漂移电离电子。从外部压力容器提供高压需要专门的高压馈通。另一种方法是通过外部引入的相对低压在压力容器内生成高压。CW乘法器可以将低交流电压输入转换为高直流电压输出，使其适用于此目的。我们已将CW乘法器集成到AXEL（氙电发光探测器）中，这是一种高压氙气TPC，用于搜索$^{136}$Xe的无中微子双β衰变。它使用硅光电倍增管通过电发光检测电离电子，使其对电子噪声具有强抗性。CW乘法器的运行已成功演示；TPC在6.8 bar下运行40天，获得2615 keV处高达(0.67 ± 0.08)% (FWHM)的能量分辨率。
英文摘要：
We have newly developed a Cockcroft-Walton (CW) multiplier that can be used in a gas time projection chamber (TPC). A TPC requires a high voltage to form an electric field that drifts ionization electrons. Supplying the high voltage from outside the pressure vessel requires a dedicated high-voltage feedthrough. An alternative approach is to generate the high voltage inside the pressure vessel with a relatively low voltage introduced from outside. A CW multiplier can convert a low AC voltage input to a high DC voltage output, making it suitable for this purpose. We have integrated a CW multiplier into the AXEL (A Xenon ElectroLuminescence detector), a high pressure xenon gas TPC to search for neutrinoless double beta decay of $^{136}$Xe. It uses silicon photomultipliers to detect the ionization electrons through elecrtoluminescence, making it strong against electronic noise. Operation of the CW multiplier was successfully demonstrated; the TPC was operated for 40 days at 6.8 bar, and an energy resolution as high as (0.67 $\pm$ 0.08) % (FWHM) at 2615 keV was obtained.
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