Author/Authors :
Sumiyoshi، نويسنده , , T. and Adachi، نويسنده , , I. and Enomoto، نويسنده , , R. and Iijima، نويسنده , , T. and Suda، نويسنده , , R. and Leonidopoulos، نويسنده , , C. Amanda Marlow، نويسنده , , D.R and Prebys، نويسنده , , E. and Kawabata، نويسنده , , R. and Kawai، نويسنده , , H. and Ooba، نويسنده , , T. and Nanao، نويسنده , , M. and Suzuki، نويسنده , , K. and Ogawa، نويسنده , , S. and Murakami، نويسنده , , A. and Khan، نويسنده , , M.H.R.، نويسنده ,
Abstract :
Low-refractive-index silica aerogel is a convenient radiator for threshold-type Cherenkov counters, which are used for particle identification in high-energy physics experiments. For the BELLE detector at the KEK B-Factory we have produced about 2 m3 of hydrophobic silica aerogels of n=1.01–1.03 using a new production method. The particle identification capability of the aerogel Cherenkov counters was tested and 3σ pion/proton separation has been achieved at 3.5 GeV/c. Radiation hardness of the aerogels was confirmed up to 9.8 Mrad. The Aerogel Cherenkov counter system (ACC) was successfully installed in the BELLE just before this conference.
