Speaker
Ichiro Adachi
(KEK)
Description
Proximity focusing RICH based on silica aerogel Cherenkov radiator has been
developed for new particle identification device in the Belle detector upgrade.
To further improve detector performance, new concept for Cherenkov ring
imaging has been introduced, where multiple aerogel layers with different
indices are accumulated to increase detected photoelectrons without making
a signle photon resolution worse. By constructing a prototype counter, this
idea has been validated in a test beam experiment, and we achieved 5.5 σ
π/K separation at 4 GeV/c with more than 9 photoelectrons.
Author
Ichiro Adachi
(KEK)
