A. Kappes
University of Bonn
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Publication
Featured researches published by A. Kappes.
Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 2003
L.A.T. Bauerdick; E. Borsato; C. Burgard; T. Carli; R. Carlin; M. Casaro; V. Chiochia; F. Dal Corso; D. Dannheim; A. Garfagnini; A. Kappes; R. Klanner; E. Koffeman; B. Koppitz; U. Kötz; E. Maddox; M. Milite; M. Moritz; J.S.T. Ng; M.C. Petrucci; I. Redondo; J. Rautenberg; H. Tiecke; M. Turcato; J.J. Velthuis; A. Weber
Abstract For the HERA upgrade, the ZEUS experiment has designed and installed a high precision Micro Vertex Detector (MVD) using single sided μ -strip sensors with capacitive charge division. The sensors have a readout pitch of 120 μm , with five intermediate strips ( 20 μm strip pitch). An extensive test program has been carried out at the DESY-II testbeam facility. In this paper we describe the setup developed to test the ZEUS MVD sensors and the results obtained on both irradiated and non-irradiated single sided μ-strip detectors with rectangular and trapezoidal geometries. The performances of the sensors coupled to the readout electronics (HELIX chip, version 2.2) have been studied in detail, achieving a good description by a Monte Carlo simulation. Measurements of the position resolution as a function of the angle of incidence are presented, focusing in particular on the comparison between standard and newly developed reconstruction algorithms.
Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 2007
A. Polini; I. Brock; S. Goers; A. Kappes; U. F. Katz; E. Hilger; J. Rautenberg; A. Weber; A. Mastroberardino; E. Tassi; V. Adler; Lat Bauerdick; I. Bloch; T. Haas; U. Klein; U. Koetz; G. Kramberger; E. Lobodzinska; Rainer Mankel; J.S.T. Ng; D. Notz; M.C. Petrucci; B. Surrow; G. Watt; C. Youngman; W. D. Zeuner; C. Coldewey; R. Heller; E. Gallo; T. Carli
