A. Borissov
Max Planck Society
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Featured researches published by A. Borissov.
Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 1998
S. Bernreuther; A. Borissov; H. Böttcher; S. Brons; W. Brückner; A Buchsteiner; M. Ferstl; Y. Gärber; A. Gute; U Harder; D. Hasch; M. Kirsch; Bernd Krause; W. Lachnit; F Meißner; G. Modrak; F. Neunreither; W.-D. Nowak; M Pohl; K. Rith; H. Roloff; H Russo; F. Schmidt; A. Schwind; W. Wander
Abstract The tracking system of the HERMES spectrometer behind the bending magnet consists of two pairs of large planar 6-plane drift chambers. The design and performance of these chambers is described. This description comprises details on the mechanical and electronical design, information about the gas mixture used and its properties, results on alignment, calibration, resolution, and efficiencies, and a discussion of the experience gained through the first three years of operation.The tracking system of the HERMES spectrometer behind the bending magnet consists of two pairs of large planar 6-plane drift chambers. The design and performance of these chambers is described. This description comprises details on the mechanical and electronical design, information about the gas mixture used and its properties, results on alignment, calibration, resolution, and efficiencies, and a discussion of the experience gained through the first three years of operation.
Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 1995
S. Bernreuther; H. Böttcher; A. Borissov; W. Brückner; M. Ferstl; A. Gute; U Harder; D. Hasch; M. Kirsch; Bernd Krause; W. Lachnit; F Meißner; A. Miller; F. Neunreither; W.-D. Nowak; M Pohl; H. Roloff; H Russo; F. Schmidt; A. Schwind
Abstract Big planar drift chambers built for the downstream tracking system of the HERMES spectrometer are described. Using the fast non-flammable gas mixture Ar/CO 2 /CF 4 (90/5/5) average spatial resolutions of about 180 μm per plane at efficiencies above 96% have been obtained from test run data analysis.
ieee nuclear science symposium | 2003
M. Reinecke; I. M. Gregor; A. Borissov; Kurt Hansen; Y. Holler; I. Hristova; R. Kaiser; M. Kopytin; B. Krauss; W. Lange; P. S. Lumsden; W.-D. Nowak; N. Pickert; V. Prahl; K. Rith; G. Rosner; D. Ryckbosch; C. Shearer; J. Stewart; F. Stinzing; A. Vandenbroucke; C. Vogel
A recoil detector will he installed surrounding the internal gas target of the HERMES experiment at DESY. The recoil detector will improve the selection of exclusive events by a direct measurement of the momentum and track direction of the recoiling particle. The innermost layer of this recoil detector is a new silicon strip detector (SSD). Since Monte Carlo simulations predict proton momenta as low as 100 MeV/c, the SSD will be placed inside the HERA vacuum. A new setup of the electronics enables a dynamic range from below 4 fC at a signal-to-noise ratio of 6.8 up to 270 fC. In this report, the assembly of the first module and the final setup within the HERMES experiment will be presented. Results from charge-injection tests of a prototype module are shown.
