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  • 1
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    World Scientific Publishing Co.
    Publication Date: 2024-04-04
    Description: The book is a compilation of the most important experimental results achieved during the past 60 years at CERN - from the mid-1950s to the latest discovery of the Higgs particle. Covering the results from the early accelerators at CERN to those most recent at the LHC, the contents provide an excellent review of the achievements of this outstanding laboratory. Not only presented is the impressive scientific progress achieved during the past six decades, but also demonstrated is the special way in which successful international collaboration exists at CERN. Contents: Foreword (R-D Heuer) Preface (L Di Lella and H Schopper) The Discovery of the Higgs Boson at the LHC (P Jenni and T S Virdee) Precision Physics with Heavy-Flavoured Hadrons (P Koppenburg and V Vagnoni) Toward the Limits of Matter: Ultra-relativistic Nuclear Collisions at CERN (J Schukraft and R Stock) The Measurement of the Number of Light Neutrino Species at LEP (S Mele) Precision Experiments at LEP (W de Boer) The Discovery of the W and Z Particles (L Di Lella and C Rubbia) The Discovery of Weak Neutral Currents (D Haidt) Highlights from High Energy Neutrino Experiments at CERN (W-D Schlatter) The Discovery of Direct CP Violation (L Iconomidou-Fayard and D Fournier) Measurements of Discrete Symmetries in the Neutral Kaon System with the CPLEAR (PS195) Experiment (T Ruf) An ISR Discovery: The Rise of the Proton–Proton Cross-Section (U Amaldi) Deep Inelastic Scattering with the SPS Muon Beam (G K Mallot and R Voss) Revealing Partons in Hadrons: From the ISR to the SPS Collider (P Darriulat and L Di Lella) Properties of Antiprotons and Antihydrogen, and the Study of Exotic Atoms (M Doser) Muon g–2 and Tests of Relativity (F J M Farley) The Discoveries of Rare Pion Decays at the CERN Synchrocyclotron (G Fidecaro) Highlights at ISOLDE (K Blaum, M J G Borge, B Jonson and P Van Duppen) Readership: Graduate students and researchers in elementary particle physics, and historians of science.
    Keywords: QC1-999 ; CERN ; Particle Physics Experiments ; thema EDItEUR::P Mathematics and Science::PH Physics
    Language: English
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  • 2
    Publication Date: 2021-05-12
    Description: A microseismic event with Mw∼0.8 was recorded at the Grane oilfield, offshore Norway, in June 2015. This event is believed to be associated with a failure of the wellbore liner in well 25/11-G-8 A. The failure mechanism has been difficult to explain from drilling parameters and operational logs alone. In this study, we analyzed the detected microseismic event to shed light on the possible cause of this event. We inverted for the seismic moment tensor, analyzed the S/P amplitude ratio and radiation pattern of seismic waves, and then correlated the microseismic data with the drilling reports. The inverted seismic moment indicates a shear-tensile (dislocation) event with a strong positive isotropic component (67% of total energy) accompanied by a positive compensated linear vector dipole (CLVD) and a reverse double-couple (DC) component. Drilling logs show a strong correlation between high pump pressure and the occurrence of several microseismic events during the drilling of the well. The strongest microseismic event (Mw∼0.8) occurred during peak pump pressure of 277 bar. The application of high pump pressure was associated with an attempt to release the liner hanger running tool (RT) in the well, which had been obstructed. Improper setting of the liner hanger could have caused the forces from the RT release to be transferred to the liner and might have resulted in ripping and parting of the pipe. The possible direct impact of the ripped liner with the formation or the likely sudden hydraulic pressure exposure to the formation caused by the liner ripping may explain the estimated isotropic component in the moment tensor inversion in the well. This impact can promote slip along the pre-existing fractures (the DC component). The presence of gas in the formation or the funneled fluid to the formation caused by the liner ripping may explain the CLVD component.
    Print ISSN: 0895-0695
    Electronic ISSN: 1938-2057
    Topics: Geosciences
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