Mainz 2004 – wissenschaftliches Programm
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T: Teilchenphysik
T 300: Kosmische Strahlung V
T 300.6: Vortrag
Dienstag, 30. März 2004, 17:25–17:40, RW 2
Photomultipliers Qualification for the Fluorescence Telescopes of the Pierre Auger Observatory* — •Viviana Scherini, Karl-Heinz Becker, Anette Behrmann, Elmiloudi Elmechaouri, Heiko Geenen, Steffen Hartmann, Karl-Heinz Kampert, Lorenzo Perrone, Marcus Richter, Zbigniew Szadkowski, and Christopher Wiebusch — Berg. Universität Wuppertal, Gaußstr.20, D-42097 Wuppertal
The Pierre Auger Observatory aims to measure the extensive air
showers at energies higher than 1018 eV.
The detector relies on a hybrid measurement technique:
a 3000 km2 ground array of 1600 water Cherenkov tanks,
overviewed by 24 Fluorescence Telescopes.
A Fluorescence Telescope consists of a Schmidt optical layout
with a field of view of 30 deg × 30 deg.
The light is collected by a matrix of 440 photomultipliers placed
in the focal surface.
In total the number of PMTs will be about 11000.
Before installation, each PMT has to pass a detailed acceptance
test including a study of the linearity, an analysis of the
spectral response, and a measurement of its gain.
We have set up an automated test facility in order to perform
such tests on a large amount of PMTs.
A description of the measurements and results obtained for the
first few thousands of PMTs will be presented.
* supported by the BMBF-Verbundforschung