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HK: Fachverband Physik der Hadronen und Kerne

HK 38: Instrumentation und Anwendungen II

HK 38.4: Talk

Thursday, March 13, 2008, 17:30–17:45, 2D

The lightweight straw tube trackers for the COSY-TOF and PANDA experiments. — •Andrey Sokolov, James Ritman, and Peter Wintz for the COSY-TOF collaboration — Institute für Kernphysik I, Forschungzentrum Jülich GmbH, 52425 Jülich, Germany

A novel technology of self-supporting planar straw tube layers has been developed at IKP FZ Jülich. To avoid massive support structures all straws are glued together and stabilized by overpressure.

At present the straw tube tracker for the COSY-TOF experiment based on this technology and intended for operation in a vacuum is ready to be installed. The tracker consists of 3120 straw tubes and comprises the low material budget of 1-2 % of the radiation length with a large active volume of 0.83 m²x0.3 m.

In addition a design for the central straw tracker based on this technology has been proposed for the PANDA experiment at the new FAIR facility. The detector has a cylindrical shape with inner and outer diameters 15 and 42 cm respectively and a length of 1.5 m and consists of about 4200 straw tubes.

Results of beam tests, simulations and prototype measurements performed to investigate the performance of the straw tube trackers will be presented in this talk. Supported in part by BMBF and FZ-Jülich.