W. B. Atwood
CERN
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Featured researches published by W. B. Atwood.
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.
ieee nuclear science symposium | 1990
W. B. Atwood; T. Barczewski; Lat Bauerdick; L. Bellantoni; E. Blucher; W. Blum; J. Boudreau; O. Boyle; D. Cinabro; J. Conway; G D 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. Leclaire; I. Lehraus; T. Lohse; D. Leuke; A. Lusiani; P. S. Marrocchesi
The tracking performance of the ALEPH time projection chamber (TPC) has been studied using the data taken during the LEP (Large Electron-Positron Collider) running periods in 1989 and 1990. After careful correction of residual distortions and optimization of coordinate reconstruction algorithms, a single coordinate resolution of 173 mu m in the azimuthal and 740 mu m in the longitudinal direction is achieved. This results in a momentum resolution for the TPC alone of Delta p/p/sup 2/=0.0012 (GeV/c)/sup -1/. In combination with the ALEPH inner tracking chamber (ITC), a total momentum resolution of Delta p/p/sup 2/=0.0008 (GeV/c)/sup -1/, close to the design specifications, is reached. >
Physical Review Letters | 1980
D. Antreasyan; W. B. Atwood; R. Battiston; U. Becker; G. Bellettini; P.L. Braccini; J. G. Branson; J.D. Burger; F. Carbonara; R. Carrara; R. Castaldi; V. Cavasinni; F. Cervelli; M. Chen; G. Chiefari; T. Del Prete; E. Drago; M. Fujisaki; M.F. Hodous; T. Lagerlund; P. Laurelli; O. Leistam; R. Little; D. Luckey; Marco Maria Massai; T. Matsuda; L. Merola; M. Morganti; M. Napolitano; H. B. Newman
Physical Review Letters | 1980
D. Antreasyan; R. Carrara; U. Becker; T. Sanford; G. Chiefari; W. B. Atwood; S. Sugimoto; R. Little; F. Vannucci; D. Novikoff; Sau Lan Wu; Samuel C.C. Ting; L. Perasso; T. Matsuda; P. Laurelli; M. Fujisaki; M. Napolitano; J. G. Branson; M. Valdata-Nappi; M. Steuer; G. Bellettini; P. Spillantini; I. Schulz; C. Vannini; O. Leistam; T. Del Prete; M. Morganti; D. Luckey; K. Strauch; R. Castaldi
Physical Review Letters | 1980
D. Antreasyan; W. B. Atwood; R. Battiston; U. Becker; G. Bellettini; P.L. Braccini; J. G. Branson; J.D. Burger; F. Carbonara; R. Carrara; R. Castaldi; V. Cavasinni; F. Cervelli; M. Chen; G. Chiefari; T. Del Prete; E. Drago; M. Fujisaki; M.F. Hodous; T. Lagerlund; P. Laurelli; O. Leistam; R. Little; D. Luckey; Marco Maria Massai; T. Matsuda; L. Merola; M. Morganti; M. Napolitano; H. B. Newman
