Silica aerogel Cherenkov counter for the KEK B-factory experiment

Sumiyoshi, T.; Adachi, I.; Enomoto, R.; Iijima, T.; Suda, R.; Leonidopoulos, C.; Marlow, D.; Prebys, E.; Kawabata, R.; Kawai, H.; Ooba, T.; Nanao, Max H.; Suzuki, K.; Ogawa, S.; Murakami, Akira; Khan, M.H.R.

doi:10.1016/s0168-9002(99)00460-x

Cited by 65 publications

(18 citation statements)

References 8 publications

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“…In the previous Belle experiment, particle identification at the end cap was achieved by threshold-type aerogel Cherenkov counter (ACC) modules with n = 1.03 radiators [25]. In a single module of the counters with functionality in the magnetic field, the photodetector (comprising two fine mesh-type photomultiplier tubes) was directly attached to the counter-housing filled with aerogel blocks.…”

Section: Cherenkov Countersmentioning

confidence: 99%

Large-area silica aerogel for use as Cherenkov radiators with high refractive index, developed by supercritical carbon dioxide drying

Tabata

Adachi

Hatakeyama

et al. 2016

The Journal of Supercritical Fluids

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This study presents the development of large-area (18 × 18 × 2 cm 3 ), high refractive index (n ∼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.

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Section: Cherenkov Countersmentioning

confidence: 99%

Large-area silica aerogel for use as Cherenkov radiators with high refractive index, developed by supercritical carbon dioxide drying

Tabata

Adachi

Hatakeyama

et al. 2016

The Journal of Supercritical Fluids

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“…where the refractive index was measured using a laser with a wavelength of 405 nm [14]. At that time, aerogel tiles with a refractive index of 1.010 (density of approximately 0.036 g cm −3 ) could also be produced using the classic KEK method [16]. Modern techniques for producing more transparent, high-density aerogels have also been developed [4,17] and standardized [14,18]; however, the classic KEK method remains an effective technique for the production of ultralow-density aerogels [4].…”

Section: Fabrication Technologymentioning

confidence: 99%

Ultralow-density double-layer silica aerogel fabrication for the intact capture of cosmic dust in low-Earth orbits

Tabata

Kawai

Yano

et al. 2015

J Sol-Gel Sci Technol

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The fabrication of an ultralow-density hydrophobic silica aerogel for the intact capture cosmic dust during the Tanpopo mission is described. The Tanpopo experiment performed on the International Space Station orbiting the Earth includes the collection of terrestrial and interplanetary dust samples on a silica aerogel capture medium exposed to space for later ground-based biological and chemical analyses. The key to the mission's success is the development of highperformance capture media, and the major challenge is to satisfy the mechanical requirements as a spacecraft payload while maximizing the performance for intact capture. To this end, an ultralow-density (0.01 g cm −3 ) soft aerogel was employed in combination with a relatively robust 0.03 g cm −3 aerogel. A procedure was also established for the mass production of doublelayer aerogel tiles formed with a 0.01 g cm −3 surface open-topped, box-shaped base layer, and 60 aerogel tiles were manufactured. The fabricated aerogel tiles have been demonstrated to be suitable as flight hardware with respect to both scientific and safety requirements.

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“…A large system was built for the Belle detector at KEK, Japan (Sumiyoshi et al, 1999). Several studies of physics of Cherenkov radiation in aerogel were performed by a group from JINR, Dubna (Ruzichka et al, 1997).…”

Section: Aerogelmentioning

confidence: 99%