Dresden 2000 – scientific programme

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HK: Physik der Hadronen und Kerne

HK 13: Postersitzung / Instrumentation und Anwendungen

HK 13.33: Poster

Thursday, March 23, 2000, 10:15–12:45, B 117

Selftriggering Frontend Chips for the ANKE Vertex Detector — •A. Mussgiller¹, S. Barsov², I. Lehmann¹, S. Merzliakov³, D. Protic¹, and R. Schleichert¹ — ¹Institut für Kernphysik, Forschungszentrum Jülich — ²High Energy Physics Department, Petersburg Nuclear Physics Institute — ³Laboratory of Nuclear Problems, JINR / Dubna

The silicon vertex detector for ANKE at COSY-Jülich will comprise more than 10000 detector strips. As frontend chips a combination of VA32/TA (32 channels, 200 µ m pitch, 500 MIPS dynamic range) for spectator detection and VA2/TA chips (128 channels, 50 µ m pitch, 10 MIPS dynamic range) for forward tracking will be used. With the selftriggering capabilities of the chips it will be possible to have a trigger from the vertex detector. This option allows to extend the acceptance of the ANKE-spectrometer.

Deadtime of the ANKE readout system should stay below 100 µ s after introduction of the vertex detector. In order to meet this requirement new readout electronics is under development. At the moment the above mentioned frontendchips are being tested.