HADES tracking system: first in-beam experience

The high acceptance di-electron spectrometer at the GSI, Darmstadt, Germany, heavy-ion synchrotron Schwerionen Synchrotron is a high-resolution second-generation detector system for lepton pair spectroscopy. Its low-mass tracking system consists of two pairs of planes of trapezoidally shaped multiwi...

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Bibliographic Details
Published in:IEEE transactions on nuclear science 2004-06, Vol.51 (3), p.939-942
Main Authors: Kanaki, K., Dohrmann, F., Enghardt, W., Garabatos, C., Grosse, E., Hutsch, J., Kampfer, B., Kondyurin, A., Kotte, R., Muntz, C., Naumann, L., Sadovsky, A., Stroth, J., Sobiella, M.
Format: Article
Language:English
Subjects:
Aluminum
Anodes
Cathodes
Chambers
Creep (materials)
Detectors
Filaments
Infrared spectra
Shape
Spectroscopy
Superconducting magnets
Superconductivity
Synchrotrons
Tracking systems
Wire
Wires
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Summary:The high acceptance di-electron spectrometer at the GSI, Darmstadt, Germany, heavy-ion synchrotron Schwerionen Synchrotron is a high-resolution second-generation detector system for lepton pair spectroscopy. Its low-mass tracking system consists of two pairs of planes of trapezoidally shaped multiwire drift chambers, installed on either side of a superconducting toroidal magnet. This paper summarizes our experience with the construction and in-beam operation of the six large-area chambers produced by Forschungszentrum Rossendorf. Studies on creeping of aluminum wires over a period of three years are presented. In addition, the observation of the growth of filaments with various shapes and sizes in one of the chambers used in-beam will be discussed in detail.
ISSN:0018-9499
1558-1578
DOI:10.1109/TNS.2004.829444