Z. Feng
University of Wisconsin-Madison
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Featured researches published by Z. Feng.
Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 1991
W. B. Atwood; T. Barczewski; Lat Bauerdick; L. Bellantoni; E. Blucher; W. Blum; J. F. Boudreau; O. Boyle; D. Cinabro; J. Conway; G. Cowan; D. F. Cowen; I. Efthymiopoulos; P. Faure; Z. Feng; F. Fidecaro; B. Gobbo; A.W. Halley; Stephen Haywood; A. Jahn; R. C. Jared; R. P. Johnson; M. Kasemann; K. Kleinknecht; B.W. LeClaire; I. Lehraus; B. Lofstedt; T. Lohse; D. Lueke; A. Lusiani
Abstract The performance of the ALEPH Time Projection Chamber (TPC) has been studied using data taken during the LEP running periods in 1989 and 1990. After correction of residual distortions and optimisation of coordinate reconstruction algorithms, single coordinate resolutions of 173 μm in the azimuthal and 740 μm in the longitudinal direction are achieved. This results in a momentum resolution for the TPC of Δp / p 2 = 1.2 × 10 −3 (GeV/ c ) −1 . In combination with the ALEPH Inner Tracking Chamber (ITC), a total momentum resolution of Δp / p 2 = 0.8 × 10 −3 (GeV/ c ) −1 is obtained. With respect to particle identification, the detector achieves a resolution of 4.4% for the measurement of the ionisation energy loss.
Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 1997
J. DeWitt; D.E. Dorfan; T. Dubbs; A. A. Grillo; S. Kashigin; W. Kroeger; T. Pulliam; J. Rahn; W.A. Rowe; H. F.-W. Sadrozinski; Abraham Seiden; E. Spencer; A. Webster; R. Wichmann; M. Wilder; D. C. Williams; J. Dane; A. J. Lankford; S. Pier; B. Schmid; R. Bonino; C. Couyoumtzelis; Ph. Demierre; K. Fujita; T. Handa; Y. Iwata; T. Ohsugi; Hiroyuki Iwasaki; T. Kohriki; T. Kondo
We report results from beam tests on silicon microstrip detectors using a binary readout system for ATLAS. The data were collected during the H8 beam test at CERN in August/September 1995 and the KEK test in February 1996. The binary modules tested had been assembled from silicon microstrip detectors of different layout and from front-end electronics chips of different architecture. The efficiency, noise occupancy and position resolution were determined as a function of the threshold setting for various bias voltages and angles of incidence for both irradiated and non-irradiated detectors. In particular, the high spatial resolution of the beam telescope allowed the evaluation of the performance as a function of the track location in between detector strips.
Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 1996
H. F.-W. Sadrozinski; J. DeWitt; D. E. Dorfan; T. Dubbs; A. A. Grillo; S. Kashigin; W. Kroeger; J. Rahn; W. Rowe; A. Seiden; E. Spencer; A. Webster; R. Wichmann; M. Wilder; David A. Williams; J. Dane; A. J. Lankford; S. Pier; B. Schmid; R. Bonino; C. Couyoumtzelis; Ph. Demierre; Y. Iwata; T. Ohsugi; Hiroyuki Iwasaki; T. Kondo; S. Terada; Y. Unno; Wladyslaw Dabrowski; M. Idzik
The monitoring of the performance of silicon strip systems with binary readout is discussed. Due to the fact that neither pulse height nor noise level are recorded, the system is monitored with the efficiency and noise occupancy. As an example, on-line monitoring of the binary silicon strip system at the ATLAS H8 beam test at CERN is described.
