Construction of Silica Aerogel Radiator System for Belle II RICH Counter

Construction of Silica Aerogel Radiator System for Belle II RICH Counter
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Belle II RICH柜台二氧化硅气凝胶散热器系统的构建

DOI：
10.1016/j.nima.2017.02.036
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发表时间：
2017
期刊：
Nuclear Inst. and Methods in Physics Research, A
影响因子：
--
通讯作者：
Ichiro Adachi et al
Ichiro Adachi et al
中科院分区：
--
文献类型：
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作者：
Ichiro Adachi et al

文献摘要

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我们为贝儿Ⅱ实验研制了一种新的前向粒子鉴别装置--RICH计数器。作为该计数器中的切伦科夫辐射器，采用由两个折射率指数n=1.045和1.055组成的双气凝胶层组合。2013-2014年期间，利用千叶集团改进的新方法进行了这些气凝胶砖的大规模生产。对它们的光学性质进行了研究。得到的瓷砖的折射率被认为是在很好的协议与我们的期望，和的折射率是足够高的，用于丰富的辐射器。
We have developed a RICH counter as a new forward particle identification device for the Belle II experiment. As a Cherenkov radiator in this counter, a dual aerogel layer combination consisting of two refractive indicies,n=1.045 and 1.055, is employed. Mass production of these aerogel tiles has been done during 2013–2014 with new method improved by Chiba group. Optical qualities for them have been examined. The refractive indices of the obtained tiles were found to be in good agreement with our expectations, and the transparencies were high enough to be used for the RICH radiator.