Bonn 2010 – wissenschaftliches Programm
HK 36.72: Poster
Mittwoch, 17. März 2010, 14:00–16:00, HG Aula
A Disc-DIRC-Detector for WASA at COSY as a test detector for PANDA@FAIR* — •Evgueni Doroshkevich — Physikalisches Institut der Universität Tübingen
For a precise measurement of the velocity of highly relativistic particles the detection of Cherenkov light is very attractive. Detectors based on the Detection of Internally Reflected Cherenkov Light (DIRC) - first built and used in the BaBar experiment - are also planned to be used in the PANDA detector at FAIR, both in form of a barrel-DIRC and in form of a disc-DIRC. In both cases the Cherenkov rings are reconstructed from the internally reflected Cherenkov light deflected into position sensitive detectors.
For the WASA Forward Detector setup a Disc-DIRC is constructed, which serves both as a test module for PANDA and an important upgrade of the WASA detector. For an optimal performance at WASA the Disc-DIRC is tilted by 20∘ out of the vertical plane. The internally reflected Cherenkov light will be guided to multi-anode photomultipliers by focussing light guides. Both Disc-DIRC and focussing light guides will be made of plexiglass. Design, performance and time line of construction and implementation will be discussed.
* supported by BMBF, COSY-FFE, DFG (Eur. Graduate School)