Large-area silica aerogel for use as Cherenkov radiators with high refractive index, developed by supercritical carbon dioxide drying
Large-area silica aerogel for use as Cherenkov radiators with high refractive index, developed by supercritical carbon dioxide drying
复制标题
DOI：
10.1016/j.supflu.2015.11.022
复制
发表时间：
2016-04-01
影响因子：
3.9
通讯作者：
Sumiyoshi, Takayuki
中科院分区：
文献类型：
--
作者：
Tabata, Makoto;Adachi, Ichiro;Sumiyoshi, Takayuki
本研究提出了大面积（18 cm x 18 cm x 2 cm）、高折射率（n近似于1.05）的疏水二氧化硅气凝胶瓦的开发，用于切伦科夫散热器。这些透明气凝胶砖将安装在切伦科夫探测器上，用于下一代基于加速器的粒子物理实验Belle II，该实验将在日本高能加速器研究组织（KEK）进行。通过改进干燥湿气凝胶瓦时超临界二氧化碳（scCO(2)）的提取工艺，消除了气凝胶瓦原型的开裂现象。最后，建立了实际探测器气凝胶瓦的批量生产方法。实验结果表明，所制备的气凝胶瓦具有良好的光学性能和疏水性，且瓦密度均匀。(C) 2015 Elsevier B.V.版权所有
This study presents the development of large-area (18 cm x 18 cm x 2 cm), high refractive index (n similar to 1.05) hydrophobic silica aerogel tiles for use as Cherenkov radiators. These transparent aerogel tiles will be installed in a Cherenkov detector for the next-generation accelerator-based particle physics experiment Belle II, to be performed at the High Energy Accelerator Research Organization (KEK) in Japan. Cracking has been eliminated from the prototype aerogel tiles by improving the supercritical carbon dioxide (scCO(2)) extraction procedure when drying the wet gel tiles. Finally, a method of mass-producing aerogel tiles for the actual detector was established. It was confirmed that the experimentally manufactured aerogel tiles meet the required optical and hydrophobic characteristics and have a uniform tile density. (C) 2015 Elsevier B.V. All rights reserved.