Speaker
Leszek Ropelewski
(CERN)
Description
Since its introduction in 1996 GEM (Gas Electron Multiplier) has attracted a
lot of interest due to many promising features: good position accuracy and
two track resolution, high rate capability, high radiation tolerance and time
stability, large flexibility of the geometrical shapes and readout schemes.
This has led to a wide range of applications from simple tracking and
triggering through photon detection for fast RICH to GEMbased TPC. CERN
was one of the main drivers behind these developments. In parallel to the
success of GEM in physics experiments industrial partners became aware of
their potential for applications in medicine, biology and safety technology. In
this paper we show latest CERN developments of the new GEM detector
configurations and readout structures. In particular we present detector
developed for TOTEM using specific readout electrode allowing for precise
tracking and fast triggering at the same time. As another example we
present semi cylindrical detector developed for NA49-future experiment.
Laboratory and beam test results illustrate detector performances.
Author
Leszek Ropelewski
(CERN)
