Speaker
Mr
Oliver Steffen
(Institut für Kernphysik, Universität Mainz)
Description
The Crystal Ball Collaboration uses the energy tagged photonbeam facility in Mainz, Germany, to study photo-induced reactions on nucleons and nuclei.
The Crystal Ball/TAPS $4\pi$ calorimeter setup is optimized for the
detection of neutral final states. Charged particles are identified and measured
by the inner detector system including a two layer MWPC. The increased rate of
charged particles in current and future experiments exceeds the rate capability
of these MWPCs.
We are developing a small Time Projection Chamber with triple GEM readout
meeting the stringent space requirements of the Crystal Ball experiment.
This new tracking detector will feature higher rate capabilities and allows
better track reconstruction.
We are investigating the use of Carbon Fiber Reinforced Plastics (CFRP)
to build light but strong chamber walls.
First tests with carbon fiber prepregs show promising results.
In addition we are using the PLUTO event generator to study the detector acceptance under
our experiment conditions. Similar simulations are done to optimize the number and the shape
of the readout pads.
This poster will give an overview of the current status of the project and present the latest results.
Collaboration
A2 Collaboration
Primary authors
Mr
Martin Wolfes
(Institut für Kernphysik, Universität Mainz)
Mr
Oliver Steffen
(Institut für Kernphysik, Universität Mainz)
Prof.
Wolfgang Gradl
(Institut für Kernphysik, Universität Mainz)
