M. Wielers
Karlsruhe Institute of Technology
Network
Latest external collaboration on country level. Dive into details by clicking on the dots.
Publication
Featured researches published by M. Wielers.
Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 1997
K.H. Becks; P. Borghi; J.M. Brunet; M. Caccia; J. C. Clemens; M. Cohen-Solal; B. Courty; W. De Boer; P. Delpierre; J. Drees; P. Gerlach; K.W. Glitza; I.M. Gregor; L. Guglielmi; F. Hartmann; J.M. Heuser; J.J. Jaeger; M. Kaiser; S. Kersten; D. Knoblauch; A. Koepert; H. Leb; F. Ledroit; G. Maehlum; C. Meroni; S. Meyer; K. Moenig; T. Mouthuy; H. Pert; M. Pindo
Abstract To improve tracking in the very forward direction for running at LEP200, the angular acceptance of the DELPHI Vertex detector has been extended from 45° to 11° with respect to the beam axis. Pixel detector crowns cover the region between 25° and 13°. Due to very tight space and material thickness constraints it was necessary to develop new techniques (integrated busses in the detector substrate, high density layout on Kapton, etc.). About 1000 cm 2 of pixels are already installed and working in DELPHI. Techniques, tests and production of these detectors will be described, as well as the main problems encountered during this work.
Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 1997
K.H. Becks; P. Borghi; M. Caccia; J. C. Clemens; M. Cohen-Solal; B. Courty; W. De Boer; P. Delpierre; J. Drees; P. Gerlach; K.W. Glitza; I.M. Gregor; L. Guglielmi; F. Hartmann; J.M. Heuser; J.J. Jaeger; M. Kaiser; S. Kersten; D. Knoblauch; A. Körpert; H. Leb; F. Ledroit; G. Maehlum; C. Meroni; S. Meyer; K. Moenig; T. Mouthuy; M. Pindo; M. Raymond; N. Redaelli
Abstract The status of the pixel detector for the DELPHI Silicon Tracker is presented. The main characteristics of the detector, the readout chip and the assembly are summarized.
Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 1998
K.H. Becks; J.M. Brunet; M. Caccia; J. C. Clemens; M. Cohen-Solal; B. Courty; W. De Boer; P. Delpierre; N. Demaria; J. Drees; M. Elsing; P. Gerlach; K.W. Glitza; I.M. Gregor; G Guglielmi; F. Hartmann; S. Heising; J.M. Heuser; J.J. Jaeger; M. Kaiser; S. Kersten; D. Knoblauch; H. Leb; F. Ledroit; G. Maehlum; C. Meroni; Klaus Mönig; T. Mouthuy; M. Raymond; L. Roos
Abstract The DELPHI Vertex Detector has been upgraded for LEP200 with 2 layers of pixel detectors and 2 layers of ministrips as endcaps, thus covering the polar angular range between 10° and 21° and allowing for standalone pattern recognition. During the 1995/96 shutdown the first 95 modules were installed and the installation was completed in May 97 with all 152 modules. Production yields and failures during the assembly will be presented. The detector operated at a threshold of around 9000 electrons resulting in a number of noisy pixels at the 10 −3 level. After masking these hot pixels in the readout, the remaining number of random hits per event is at the 10 −6 level. The observed resolution of about 100xa0μm is close to the expectation for binary readout. The track reconstruction efficiency increased by more than 100% in the central part of the forward tracker.
Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 1998
K.H. Becks; J.M. Brunet; M. Caccia; J. C. Clemens; M. Cohen-Solal; B. Courty; W. deBoer; P. Delpierre; N. Demaria; J. Drees; M. Elsing; P. Gerlach; K.W. Glitza; I.M. Gregor; L. Guglielmi; F. Hartmann; J.M. Heuser; J.J. Jaeger; M. Kaiser; S. Kersten; D. Knoblauch; H. Leb; F. Ledroit; G. Maehlum; J. Masik; C. Meroni; S. Meyer; Klaus Mönig; T. Mouthuy; M. Raymond
Abstract In 1996 the DELPHI experiment at LEP has upgraded its silicon tracker. In the forward region, pixel detectors were installed. The pixel commissioning and the first results are reported.
Collaboration
Dive into the M. Wielers's collaboration.
