Showing papers by "Hartmut Sadrozinski published in 1989"
20 Aug 1989-Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment
TL;DR: The Mark II detector has been upgraded in preparation for its role as the first detector to take data at the Stanford Linear Collider as discussed by the authors, including the central drift chamber, the time-of-flight system, the coil, the endcap electromagnetic calorimeters and the beam energy and luminosity measuring devices.
Abstract: The Mark II detector has been upgraded in preparation for its role as the first detector to take data at the Stanford Linear Collider. The new detector components include the central drift chamber, the time-of-flight system, the coil, the endcap electromagnetic calorimeters and the beam energy and luminosity measuring devices. There have also been improvements in detector hermeticity. All of the major components were installed for a test run at the PEP storage ring (√s = 29 GeV) in 1985. This paper describes the upgraded detector, including its trigger and data acquisition systems, and gives performance figures for its components. Future improvements are also discussed.
40 citations
01 Jul 1989-Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment
TL;DR: In this article, the authors present a tracking system for the SSC/LHC based on silicon microstrip technology with excellent momentum resolution and good multitrack resolution, and the parameters of the tracking device are based on an analysis of the requirements of 1 TeV physics.
Abstract: We present the design of a tracking system for the SSC/LHC based on silicon microstrip technology with excellent momentum resolution and good multitrack resolution. The parameters of the tracking device are based on an analysis of the requirements of 1 TeV physics. The performance of the silicon tracker has been investigated in a Monte Carlo study. An ongoing R&D program to develop radiation-hard fast readout chips for the silicon microstrips is described.
8 citations
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15 Apr 1989-Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment
TL;DR: In this article, the authors discuss several aspects of designing a tracking detector for reconstruction of charged particles in 1 TeV jets in the central rapidity region, and define the parameters for an all silicon strip tracking system.
Abstract: We discuss several aspects of designing a tracking detector for reconstruction of charged particles in 1 TeV jets in the central rapidity region. Typical angles between tracks in such jets are roughly quantified. Based on this characteristic, the parameters for an all silicon strip tracking system are defined. The approach taken can be used to design alternative tracking systems.
6 citations
TL;DR: It is demonstrated that the charged multiplicity of the events can provide an extremely useful tool for distinguishing a jet system originating via real W decay from aJet system produced by the mixed electroweak-QCD processes.
Abstract: In order to study WW scattering or the decay of a heavy standard-model Higgs boson in the TeV region, it is necessary to use the channel W(→lν)+W(→jets). However, techniques are required for suppressing the severe background from mixed electroweak-QCD production of W+jets. We demonstrate that the charged multiplicity of the events can provide an extremely useful tool for distinguishing a jet system originating via real W decay from a jet system produced by the mixed electroweak-QCD processes. Analogous techniques will be useful for any process involving W’s→jets, whenever the W decaying to jets has pt≫mW and the primary background produces jets predominantly in a color-nonsinglet state; however the precise procedure must be optimized separately for each such process.
4 citations
10 Nov 1989-Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment
TL;DR: In this paper, the authors discuss the program to develop radiation-hard readout electronics for a Si microstrip detector system, and the first results of the program are discussed. But they do not discuss the design of the readout.
Abstract: One of the characteristics of the colliders of the next generation (HERA, SSC/LHC) will be the very high radiation levels in the detectors. Thus an important part of the R&D for experiments at the colliders will be the development of radiation-hard detectors and readout electronics. We discuss the program to develop radiation-hard readout electronics for a Si microstrip detector system, and the first results.
2 citations