DIRC , a Newt Type of Particle Identification System for BABAR *

DIRC for a Higher Luminosity B Factory

The Dirc, a novel type of Cherenkov ring imaging device, is the primary hadronic particle identification system for the BABAR detector at the asymmetric B-factory Pep-II at SLAC. It is based on total internal reflection and uses long, rectangular bars made from synthetic fused silica as Cherenkov radiators and light guides. BABAR began taking data with colliding beams in late spring 1999. This ...

DIRC – The Particle Identification System for BaBar

Construction and Performance of the BABAR-DIRC

The new type of ring-imaging Cherenkov detector technology called Dirc (an acronym for Detection of Internally Reflected Cherenkov (Light)) has been used successfully for hadronic particle identification in the BABAR experiment at the B Factory (PEP-II) located at the SLAC National Accelerator Laboratory. This paper describes the R&D for and the construction of the Dirc radiator bars and the pe...

Dirc, a New Type of Particle Identification System for BaBar

The Dirc, a new type of Cherenkov imaging device, has been selected as the primary particle identification system for the BaBar detector at the asymmetric B-factory, Pep-II. It is based on total internal reflection and uses long, rectangular bars made from synthetic fused silica as Cherenkov radiators and light guides. In this paper, the principles of the Dirc ring imaging Cherenkov technique a...

Test of a Large Scale Prototype of the DIRC, a Cerenkov Imaging Detector based on Total Internal Reflection for BABAR at PEP-II*

The principles of the DIRC ring imaging Cerenkov technique are brie y explained and its choice for the BABAR detector particle identi cation system is motivated. A large scale prototype of the DIRC for the BABAR experiment is then described. Details of the design of this prototype and its test in a hadronic particle beam at the CERN-PS are presented, and results from various prototype and test ...