The STAR-detector was built as one component of a
4p-detector setup for
the test of the Gerasimov--Drell--Hearn sum rule. The STAR-detector will be
employed to determine charged hadronic particle rates at small forward angles
and to suppress atomic events. It consists of a scintillator plate and nine
concentric scintillator rings with decreasing diameters.
The optimized shape of the rings and the lightguides was found through
simulations with the Monte Carlo program SIMLIGHT.
Picture
Technical Data
Total size of the detector: 2000mm x 1700mm x 170 mm
nine segmented rings of plastic scintillators
each segment is read out by one photomultiplier
one rectangular plastic scintillator trigger plate
read out by four photomultipliers
More information about the STAR detector and the GDH experiment:
André Fuchs:
Entwicklung des STAR Detektors für die experimentelle
Überprüfung der Gerasimov-Drell-Hearn-Summenregel
(Diploma theses; November 1994)