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Towards Future Circular Colliders
Michael Benedikt,Frank Zimmermann 한국물리학회 2016 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.69 No.6
The Large Hadron Collider (LHC) at the European Organization for Nuclear Research (CERN) presently provides proton-proton collisions at a center-of-mass (c.m.) energy of 13 TeV. The LHC design was started more than 30 years ago, and its physics program will extend through the second half of the 2030’s. The global Future Circular Collider (FCC) study is now preparing for a post-LHC project. The FCC study focuses on the design of a 100-TeV hadron collider (FCC-hh) in a new ∼100 km tunnel. It also includes the design of a high-luminosity electron-positron collider (FCCee) as a potential intermediate step, and a lepton-hadron collider option (FCC-he). The scope of the FCC study comprises accelerators, technology, infrastructure, detectors, physics, concepts for worldwide data services, international governance models, and implementation scenarios. Among the FCC core technologies figure 16-T dipole magnets, based on Nb3Sn superconductor, for the FCC-hh hadron collider, and a highly-efficient superconducting radiofrequency system for the FCCee lepton collider. Following the FCC concept, the Institute of High Energy Physics (IHEP) in Beijing has initiated a parallel design study for an e+e − Higgs factory in China (CEPC), which is to be succeeded by a high-energy hadron collider (SPPC). At present a tunnel circumference of 54 km and a hadron collider c.m. energy of about 70 TeV are being considered. After a brief look at the LHC, this article reports the motivation and the present status of the FCC study, some of the primary design challenges and R&D subjects, as well as the emerging global collaboration.
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Suvrath Pai,Benedikt Neuberger,Michael Buchholz 제어로봇시스템학회 2021 제어로봇시스템학회 국제학술대회 논문집 Vol.2021 No.10
Safety related rider assistance systems (RAS) that are developed for traditional two-wheelers can also be used in cargo bikes. Such systems typically rely on knowledge of the mass properties of the vehicle. However, the mass, center of gravity and moment of inertia of an electric cargo bike can vary greatly depending on the payload. Therefore, determination of its inertial properties is crucial for development of functional and reliable RAS. This paper presents an Unscented Kalman Filter (UKF) based algorithm, which estimates the mass, center of gravity and moment of inertia of the cargo load online. The force exerted by the load as well as the roll angle and roll acceleration of the cargo bike are provided as inputs to the algorithm. The developed algorithm is then validated against measurements on a test bench. Finally, the robustness of the estimation algorithm during dynamic scenarios, which result in shifting of the cargo load, is demonstrated using data from a commercially available multi-body vehicle dynamics software.
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Christoph Niessen,Ernst Michael Jung,Walter A. Wohlgemuth,Benedikt Trabold,Michael Haimerl,Andreas Schreyer,Christian Stroszczynski,Philipp Wiggermann 대한영상의학회 2013 Korean Journal of Radiology Vol.14 No.5
We report in a 65-year-old man hepatocellular carcinoma adjacent to a transjugular intrahepatic portosystemic shunt stent-graft which was successfully treated with irreversible electroporation (IRE). IRE is a new non-thermal tissue ablation technique which uses electrical pulses to induce cell necrosis by irreversible membrane poration. IRE proved to be more advantageous in the ablation of perivascular tumor with little injury to the surrounding structures.
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