期刊论文

Zhao, XL;Liao, JH

英文

物理学报

1000-3290

2022

71

22

-

10.7498/aps.71.20221283

President's Foundation of China Institute of Atomic Energy; National Natural Science Foundation of China [12005098]

本校为第一且通讯机构

ALETHEIA (a liquid hElium time projection cHambEr In dark matter) project is an originally creative dark matter experiment aiming to search for low-mass (100 MeV/c(2)-10 GeV/c(2)) WIMPs. While there have existed more than ten experiments doing research on low-mass WIMPs, the ALETHEIA is supposed to grow up to be a leading project worldwide due to many unique advantages, including but are not limited to extremely low intrinsic backgrounds, easy purification, and strong potential capability of signal/background discrimination. Owing to the project's original creativity, there has existed no dire...

液氦时间投影室(ALETHEIA)是一个原创的低质量(100 MeV/c~2-10 GeV/c~2)暗物质探测装置.入射粒子在液氦时间投影室中与液氦发生相互作用会产生80 nm长的闪烁光.目前尚无商用光电读出器件可以直接高效读取该闪烁光.为此,需要波长迁移剂(wavelength shifter)先将其转换为可见光,然后再用商用光电读出器件探测之.在参考国际相关类似涂敷试验装置的基础上,利用改进的气相沉积法成功地在直径和高度均为10 cm的圆柱形聚四氟乙烯(PTFE)容器内壁涂敷1.50-3.02 μm.厚的TPB(tetraphenyl butadiene, 1,1,4,4-四苯基- 1,3-丁二烯)涂层.此工艺方法对其他需要在圆柱形探测器内壁涂敷TPB或者其他类似材料的试验...