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  • 1
    Publication Date: 2023-06-21
    Description: The numerical stability of ocean circulation models is of high significance in operational forecasting. A substantial improvement in numerical stability of the 3D-ocean model HBM could be achieved by the implementation of new realizability criteria in the turbulence closure scheme. Realizability criteria which were already well documented for closure functions without double diffusion were therefore extended to those using double diffusion. A purely technical validation method called ε-test which is suitable for the detection of numerical stability problems is presented, and the effect of the development in turbulence model is demonstrated under severe weather conditions during extreme storm events. Evaluation of statistics of longer simulations indicate that instabilities appeared only locally and temporary; nevertheless, a significant impact on drift products relying on the current forecasts could be demonstrated, which underlines the importance of realizability in turbulence closure schemes in comprehensive operational model systems including ocean circulation and downstream drift components.
    Description: Bundesamt für Seeschifffahrt und Hydrographie (BSH) (4225)
    Keywords: ddc:551.46 ; turbulence closure ; numerical stability / realizability ; operational forecasting systems
    Language: English
    Type: doc-type:article
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  • 2
    Publication Date: 2024-04-04
    Description: This book provides a broad introduction to the physics and technology of the High Luminosity Large Hadron Collider (HL-LHC). This new configuration of the LHC is one of the major accelerator projects for the next 20 years and will give new life to the LHC after its first 15-year operation. Not only will it allow more precise measurements of the Higgs boson and of any new particles that might be discovered in the next LHC run, but also extend the mass limit reach for detecting new particles. The HL-LHC is based on the innovative accelerator magnet technologies capable of generating 11–13 Tesla fields, with effectiveness enhanced by use of the new Achromatic Telescopic Squeezing scheme, and other state-of-the-art accelerator technologies, such as superconducting compact RF crab cavities, advanced collimation concepts, and novel power technology based on high temperature superconducting links. The book consists of a series of chapters touching on all issues of technology and design, and each chapter can be read independently. The first few chapters give a summary of the whole project, of the physics motivation and of the accelerator challenges. The subsequent chapters cover the novel technologies, the new configurations of LHC and of its injectors as well as the expected operational implications. Altogether, the book brings the reader to the heart of technologies for the leading edge accelerator and gives insights into next generation hadron colliders. Contents: Foreword (S Myers) Preface (O Brüning and L Rossi) Introduction to the HL-LHC Project (L Rossi and O Brüning) The Physics Landscape of the High Luminosity LHC (M Mangano) The HL-LHC Machine (I Bejar, O Brüning, P Fessia, L Rossi, R Tomas and M Zerlauth) The HL-LHC Accelerator Physics Challenges (S Fartoukh and F Zimmermann) Interface with Experimental Detector in the High Luminosity Run (H Burkhardt) Superconducting Magnet Technology for the Upgrade (E Todesco, G Ambrosio, P Ferracin, J M Rifflet, G L Sabbi, M Segreti, T Nakamoto, R van Weelderen and Q Xu) Crab Cavity Development (R Calaga, E Jensen, G Burt and A Ratti) Powering the Hi-Luminosity Triplets (A Ballarino and J P Burnet) Cryogenics for HL-LHC (L Tavian, K Brodzinski, S Claudet, G Ferlin, U Wagner and R van Weelderen) The "Environmental" Challenges: Impact of Radiation on Machine Components (M Brugger, F Cerutti and L S Esposito) Radiation Protection Considerations (C Adorisio, S Roesler, C Urscheler and H Vincke) Machine Protection with a 700 MJ Beam (T Baer, R Schmidt, J Wenninger, D Wollmann and M Zerlauth) Cleaning Insertions and Collimation Challenges (S Redaelli, R B Appleby, A Bertarelli, R Bruce, J M Jowett, A Lechner and R Losito) Long-Range Beam–Beam Compensation Using Wires (F Zimmermann and H Schmickler) Impedance and Component Heating (E Métral, F Caspers, N Mounet, T Pieloni and B Salvant) Challenges and Plans for the Proton Injectors (R Garoby) New Injectors: The Linac4 Project and the New H– Source (J Lettry and M Vretenar) Challenges and Plans for the Ion Injectors (D Manglunki) Challenges and Plans for Injection and Beam Dump (M Barnes, B Goddard, V Mertens and J Uythoven) Beam Instrumentation and Diagnostics for the LHC Upgrade (E Bravin, B Dehning, R Jones and T Lefevre) Heavy-Ion Operation of HL-LHC (J M Jowett, M Schaumann and R Versteegen) Implications for Operations (G Arduini, M Lamont, T Pieloni and G Rumolo) Readership: Researchers and graduates in accelerator physics and engineering.
    Keywords: QC1-999 ; High Field Superconducting Magnets ; Large Hadron Collider ; High Energy Colliders ; Superconducting Accelerators ; Advanced Collimators ; High Luminosity Colliders ; LHC Upgrades ; Crab Cavities ; Superconducting Links ; bic Book Industry Communication::P Mathematics & science::PH Physics ; thema EDItEUR::P Mathematics and Science::PH Physics
    Language: English
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 74 (1962), S. 758-758 
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 4
  • 5
    Publication Date: 2023-03-03
    Keywords: ddc:600
    Repository Name: Wuppertal Institut für Klima, Umwelt, Energie
    Language: English
    Type: report , doc-type:report
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