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arXiv · 1207.3948

Optical and radiographical characterization of silica aerogel for Cherenkov radiator

Makoto Tabata·Ichiro Adachi·Yoshikiyo Hatakeyama·Hideyuki Kawai·Takeshi Morita·Keiko Nishikawa
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Abstract

We present optical and X-ray radiographical characterization of silica aerogels with refractive index from 1.05 to 1.07 for a Cherenkov radiator. A novel pin-drying method enables us to produce highly transparent hydrophobic aerogels with high refractive index by shrinking wet-gels. In order to investigate the uniformity in the density (i.e., refractive index) of an individual aerogel monolith, we use the laser Fraunhofer method, an X-ray absorption technique, and Cherenkov imaging by a ring imaging Cherenkov detector in a beam test. We observed an increase in density at the edge of the aerogel tiles, produced by pin-drying.

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Makoto Tabata, Ichiro Adachi, Yoshikiyo Hatakeyama, Hideyuki Kawai, Takeshi Morita, Keiko Nishikawa. 2012-07-17. Optical and radiographical characterization of silica aerogel for Cherenkov radiator. https://doi.org/10.1109/tns.2012.2208479

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