Title :
The HADES tracking system: first in-beam experiences with operation and aging
Author :
Kanaki, Kalliopi ; Dohrmann, Frank ; Enghardt, Wolfgang ; Garabatos, Chilo ; Grosse, Eckart ; Hutsch, Jochen ; Kampfer, Burkhard ; Kondyurin, Alexey ; Kotte, Roland ; Müntz, Christian ; Naumann, Lothar ; Sadovsky, Alexander ; Stroth, Joachim ; Sobiella, M
Author_Institution :
Inst. fur Kern- und Hadronenphysik, Forschungszentrum Rossendorf, Dresden, Germany
Abstract :
The High Acceptance Di-Electron Spectrometer (HADES) at the heavy ion synchrotron SIS of GSI, Darmstadt, 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 (MDC), installed on either side of a superconducting toroidal magnet. This paper summarizes some experiences with the construction and the 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 growth of filaments with various shapes and sizes in one of the chambers used in-beam will be discussed in detail.
Keywords :
ageing; drift chambers; electron spectrometers; particle beam dynamics; superconducting magnets; Forschungszentrum Rossendorf; HADES tracking system; High Acceptance Di-Electron Spectrometer; MDC; aging; aluminum wire creeping; filament growth; heavy ion synchrotron SIS; high-resolution second generation detector system; in-beam operation; large-area chambers; lepton pair spectroscopy; low-mass tracking system; superconducting toroidal magnet; trapezoidally shaped Multiwire Drift Chambers; Aging; Aluminum; Detectors; Shape; Spectroscopy; Superconducting devices; Superconducting filaments and wires; Superconducting magnets; Synchrotrons; Toroidal magnetic fields;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2003 IEEE
Print_ISBN :
0-7803-8257-9
DOI :
10.1109/NSSMIC.2003.1352709
