München 2006 – wissenschaftliches Programm

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HK: Physik der Hadronen und Kerne

HK 32: Instrumentation und Anwendungen

HK 32.2: Vortrag

Mittwoch, 22. März 2006, 14:30–14:45, H

Redesign of the ANKE Silicon Tracking Telescopes for Experiments with the Polarized Internal Target — •Dieter Oellers — IKP, Forschungszentrum Jülich

With the installation of the Polarised Internal Target(PIT) in summer 2005 the double polarised program at ANKE has started. A central part of this program will be the study of proton - neutron collisions by detecting low energy (2.5 MeV - 40 MeV) spectator protons from a deuterium target. For tracking and identification of these protons the three-layer silicon tracking telescopes have been built. In addition they determine the beam polarisation and the vertices.

Up to now one prototyp of the silicon tracking telescope had been used at ANKE. The redesigned telescope must be temperature stabilised to improve the energy resolution of the Si(Li) and to reduce the temperature drift of the frontend electronics. This will guarantee an absolute energy-loss determination with ≤ 1 % precision. The detector positions must be known with an accuracy better then 0.2 mm. Furthermore we would like to increase the energy range by installing a 10 mm thick Si(Li) detector.

For the eight telescopes for future experiments with the PIT/storage cell a redesign of the cooling and support structure is inevitably. It will be carried out in cooperation with the Central Technology Division(ZAT) of the Forschungszentrum Jülich.

Design and implementation into ANKE will be presented.