M. Sachwitz
University of Lausanne
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Featured researches published by M. Sachwitz.
Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 1994
M. Acciarri; A. Adam; O. Adriani; S. Ahlen; J. Alcaraz; G. Ambrosi; E. Babucci; L. Baksay; A. Baschirotto; R. Battiston; W. Baur; A. Bay; Gy.L. Bencze; B. Bertucci; M. Biasini; G. M. Bilei; G.J. Bobbink; J. Boissevain; M. Bosetti; M. L. Brooks; W.J. Burger; J. Busenitz; C. Camps; M. Caria; G. Castellini; R. Castello; B. Checcuccl; A. Chen; T.E. Coan; V. Commichau
Abstract The design and construction of the silicon strip microvertex detector (SMD) of the L3 experiment at LEP are described. We present the sensors, readout electronics, data acquisition system, mechanical assembly and support, displacement monitoring systems and radiation monitoring system of the recently installed double-sided, double-layered SMD. This detector utilizes novel and sophisticated techniques for its readout.
Physics Letters B | 1986
B. Adeva; H. Anderhub; S. Ansari; U. Becker; R. Becker-Szendy; J. Berdugo; A. Boehm; M. Bourquin; J.G. Branson; J.D. Burger; C. Camps; M. Cerrada; C.C. Chang; Y.H. Chang; Hesheng Chen; M. Chen; M. L. Chen; M.Y. Chen; V. Commichau; E. Deffur; K. Deiters; M. Dhina; J. Fehlmann; H.S. Fesefeldt; D. Fong; W. Friebel; M. Fukushima; L. Garrido; K.Z. Guo; M. Hausammann
The strong interaction coupling constant αs has been measured with a new method, the planar triple energy correlation in the reaction e+e- → hadrons at center-of-mass energies ranging from 14 GeV to 46.78 GeV. A complete second-order perturbative QCD calculation was used. ΛMS = 110 ± 30 −55+70 MeV is found.
Nuclear Physics B - Proceedings Supplements | 1993
O. Adriani; S. P. Ahlen; G. Ambrosi; E. Babucci; G. Barbagli; A. Baschirotto; R. Battiston; A. Bay; G. Bencze; P. Béné; B. Bertucci; M. Biasini; G. M. Bilei; J. Boissevain; M. Bosetti; M. L. Brooks; J. Busenitz; W.J. Burger; C. Camps; M. Caria; G. Castellini; R. Castello; B. Checcucci; A. Chen; W.Y. Chen; T.E. Coan; V. Commichau; D. DiBitonto; S. Easo; P. Extermann
Abstract A report on the status of the construction of the L3 Silicon Microvertex Detector is presented here. The detector will consist of two double sided AC coupled silicon layers equipped with rφ and z readout with an expected intrinsic resolution of ≈ 6 μ m and ≈ 25 μ m respectively. A description of the detector with its mechanical support, alignment system and readout electronics is presented.
Physics Letters B | 1987
B. Adeva; H. Anderhub; S. Ansari; U. Becker; R. Becker-Szendy; J. Berdugo; A. Boehm; M. Bourquin; J. G. Branson; J.D. Burger; C. Camps; M. Cerrada; C.C. Chang; Y. H. Chang; H. S. Chen; M. Chen; M. L. Chen; M.Y. Chen; V. Commichau; E. Deffur; K. Deiters; M. Dhina; J. Fehlmann; H.S. Fesefeldt; D. G. Fong; W. Friebel; M. Fukushima; L. Garrido; K.Z. Guo; R.D. Han
We study the production of single γ, e and μ at high πt using the high energy data of the Mark-J detector at PETRA. We find good agreement with QED. We give mass limits of the SUSY particles γ, v, e and W studying the associated production of W and ẽ and radiative production of pairs of γ or v in three-body reactions.
Physics Letters B | 1986
B. Adeva; S. Ansari; U. Becker; R. Becker-Szendy; J. Berdugo; A. Boehm; J.G. Branson; J.D. Burger; M. Capell; M. Cerrada; C.C. Chang; Y.H. Chang; Hesheng Chen; M. Chen; M. L. Chen; M.Y. Chen; Y.K. Chi; E. Deffur; K. Deiters; M. Demarteau; M. Dhina; B.Z. Dong; P. Duinker; H.S. Fesefeldt; D. Fong; M. Fukushima; L. Garrido; R.D. Han; D. Harting; G. Herten
Abstract A study of τ-lepton production in the CMS energy region from 14 to 46.8 GeV at PETRA is reported. The cross section, the decay branching ratio into μν ν , and the electroweak parameters are determined with a total integrated luminosity of 115 pb −1 .
Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 1995
G. Ambrosi; M. Acciarri; O. Adriani; A. Baschirotto; R. Battiston; A. Bay; B. Bertucci; G. M. Bilei; M. Bosetti; M. L. Brooks; W.J. Burger; C. Camps; G. Castellini; R. Castello; B. Checcucci; T.E. Coan; V. Commichau; P. Extermann; A. Gabbanini; K. Hangarter; J. Kapustinsky; W.W. Kinnison; G. Landi; D. M. Lee; R. Leiste; W. Lohmann; G. B. Mills; H. Nowak; G. Passaleva; S. Pensotti
Abstract In 1993 the L3 detector at LEP has been equipped with a Silicon Microstrip Detector (SMD). In this paper we give a full description of the various components of the SMD readout and DAQ system.
nuclear science symposium and medical imaging conference | 1994
A. Adam; S. Ahlen; G. Ambrosi; E. Babucci; A. Baschirotto; R. Battiston; A. Bay; G.Y. LBencze; B. Bertucci; M. Biasini; G. M. Bilei; G. J. Bobbink; M. Bosetti; M. L. Brooks; J. Busenitz; W.J. Burger; C. Camps; M. Caria; G. Castellini; B. Checcucci; A. Chen; T.E. Coan; V. Commichau; D. DiBitonto; P. Duinker; S. Easo; P. Extermann; E. Fiandrini; A. Gougas; K. Hangartner
A silicon microvertex detector (SMD) has been commissioned for the L3 experiment at the Large Electron-Positron colliding-beam accelerator (LEP) at CERN. The SMD is a 72,672 channel, two layer barrel tracker that is comprised of 96 ac-coupled, double-sided silicon detectors. Details of the design and construction are presented. >
Nuclear Physics B (Proceedings Supplements) | 1995
M. Acciarri; A. Adam; O. Adriani; S. P. Ahlen; J. Alcaraz; G. Ambrosi; V. Andreev; E. Babucci; L. Baksay; A. Baschirotto; R. Battiston; A. Bay; Gy.L. Bencze; B. Bertucci; M. Biasini; G. M. Bilei; G. J. Bobbink; M. L. Brooks; W.J. Burger; J. Busenitz; C. Camps; M. Caria; G. Castellini; R. Castello; B. Checcucci; A. Chen; E. Choumilov; V. Choutko; T.E. Coan; V. Commichau
The 1994 running experience with the L3 Silicon Microvertex Detector is described; in particular we report on the detector performances observed during the year (namely the DAQ and detection efficiency and the signal to noise ratio) and on the reduction of the noise affecting the detector.
Physics Letters B | 1987
B. Adeva; H. Anderhub; S. Ansari; U. Becker; R. Becker-Szendy; J. Berdugo; A. Boehm; M. Bourquin; J. G. Branson; J.D. Burger; C. Camps; M. Cerrada; C.C. Chang; Y. H. Chang; H. S. Chen; M. Chen; M. L. Chen; M.Y. Chen; V. Commichau; E. Deffur; K. Deiters; M. Dhina; J. Fehlmann; H.S. Fesefeldt; D. G. Fong; W. Friebel; M. Fukushima; L. Garrido; K.Z. Guo; R.D. Han
We study the production of single γ, e and μ at high πt using the high energy data of the Mark-J detector at PETRA. We find good agreement with QED. We give mass limits of the SUSY particles γ, v, e and W studying the associated production of W and ẽ and radiative production of pairs of γ or v in three-body reactions.
Physics Letters B | 1986
B. Adeva; D. G. Fong; U. Becker; Marquina; Z. Wang; H.W. Tang; V. Commichau; H. Anderhub; H.S. Fesefeldt; Q. Z. Li; S. Ansari; M. Bourquin; B. Wyslouch; M. Tonutti; R.R. Rau; H. Rykaczewski; E. Deffur; G. Viertel; K.Z. Guo; M. Dhina; M. J. White; H. B. Newman; R. Schulte; C. Camps; J. G. Branson; R. Y. Zhu; K.L. Tung; M.M. Ilyas; B. Zhou; B.X. Yang
We study the production of single γ, e and μ at high πt using the high energy data of the Mark-J detector at PETRA. We find good agreement with QED. We give mass limits of the SUSY particles γ, v, e and W studying the associated production of W and ẽ and radiative production of pairs of γ or v in three-body reactions.
