1. HADES tracking system: first in-beam experience
- Author
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Kanaki, Kalliopi, Dohrmann, Frank, Enghardt, Wolfgang, Garabatos, Chilo, Grosse, Eckart, Hutsch, Jochen, Kampfer, Burkhard, Kondyurin, Alexey, Kotte, Roland, Muntz, Christian, Naumann, Lothar, Sadovsky, Alexander, Stroth, Joachim, and Sobiella, Manfred
- Subjects
Nuclear physics -- Research ,Business ,Electronics ,Electronics and electrical industries - Abstract
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 multi-wire 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. Index Terms--Aging, drift chambers, energy dispersive x-ray (EDX) spectrometry, filaments, infrared spectroscopy, rubber sealants, wire tension.
- Published
- 2004