Darmstadt 2008 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 34: Postersitzung

HK 34.31: Poster

Thursday, March 13, 2008, 14:00–16:00, Poster C3

Multiwire-Drift-Chambers for the HADES Spectrometer at FAIR — •Lothar Naumann, Frank Dohrmann, Klaus Heidel, Liane Heinrich, Jochen Hutsch, Burkhard Kämpfer, Roland Kotte, Martina Paul, Manfred Sobiella, and Jörn Wüstenfeld for the HADES collaboration — Forschungszentrum Dresden-Rossendorf, Institut für Strahlenphysik

New multiwire-drift-chambers for plane 1 (MDC1) for implementation in the HADES Spectrometer are under construction. This new detectors will replace the innermost six MDC1, which are ten years old detectors and are mounted closest to the target in forward direction. The aim of the new detectors is to guarantee high spatial track resolution of about 0.1 mm for charged particles with a counting efficiency close to 100 % in heavy ion collisions at beam energy of 8 AGeV as will be delivered at SIS 100 within FAIR. To measure rare reactions the rate capability of the new MDC1 must be sufficient for the envisaged high luminosity. The design of the new MDC1 differs conceptually from the former detector:

- individual self supporting glass-fiber epoxy frames;

- homogeneous gas distribution system;

- impedance controlled stiff-flexible connectors and

- Cu/Be cathode and field wires.

The design improvements as well as the manufacturing process will be reported.