May 26 – 30, 2008
Biblioteca Universitaria, Pavia, Italy
Europe/Rome timezone

The Crystal-Barrel/TAPS-Experiment at ELSA

May 30, 2008, 12:41 PM
Salone Teresiano (Biblioteca Universitaria, Pavia, Italy)

Salone Teresiano

Biblioteca Universitaria, Pavia, Italy

Strada Nuova, 65
oral presentation Operating Calorimeters Operating Calorimeters


Mr Christoph Wendel (HISKP Universität Bonn)


One aim of the Crystal-Barrel-Experiment is to gain a detailed
knowledge on the
spectrum and the properties of baryon resonances to contribute to
a better
understanding of strong QCD in the non-perturbative regime. The
experimental setup
includes three different $\varphi$-symmetric calorimeters
covering almost the
complete solid angle. The Crystal-Barrel/TAPS detector system
together with a
polarized target and a linear or circular polarized photon-beam,
allows in addtion to
the measurement of cross sections also the measurement of
observables. Resonances up to masses of 2.5~GeV can be
In the talk the readout system of the two CsI(Tl) calorimeters
will be discussed as
well as their performance including the time-, energy-resolutions
reached and their
charge identification capabilities.\
While Crystal-Barrel-Calorimeter is presently read out with
photodiodes, the
Forward-Detector features a photomultiplier readout including an
online cluster
finder for first-level-triggering. For the future it is planned
to improve the
trigger capabilties of the Crystal-Barrel-Calorimeter, presently
included in the
second level trigger only; two options, APDs and SiPMs, will be

Primary author

Mr Christoph Wendel (HISKP Universität Bonn)

Presentation materials