Author : Christoph Kaiser
Publisher : KIT Scientific Publishing
Page : 192 pages
File Size : 11,93 MB
Release : 2014-08-20
Category : Technology & Engineering
ISBN : 3866446519
Diese Arbeit beschreibt die Entwicklung einer Technologie für die Herstellung hochqualitativer sub-μm Nb/Al-AlOx/Nb-Josephson-Kontakte. Mit den dadurch entstandenen Bauteilen wurden verschiedene experimentell zuvor noch nicht beobachtete makroskopische Quanteneffekte nachgewiesen. Weiterhin wurden Nb-basierte Phasen-Qubits entworfen, hergestellt und gemessen, die längere Kohärenzzeiten als vergleichbare Bauelemente aus der Literatur aufweisen.
Author : Edward L. Wolf
Publisher : CRC Press
Page : 411 pages
File Size : 45,34 MB
Release : 2017-09-07
Category : Science
ISBN : 9814745480
This book summarizes the history and present status and applications of Josephson junctions. These devices are leading elements in superconducting electronics and provide state-of-the-art performance in detection of small magnetic fields and currents, in several digital computing methods, and in medical diagnostic devices and now provide voltage standards used worldwide. Astronomical infrared (IR) telescopes, including the South Pole Telescope, use these junctions in combinations called superconducting quantum interference devices (SQUIDs).
Author : Krueger, Philipp
Publisher : KIT Scientific Publishing
Page : 245 pages
File Size : 17,95 MB
Release : 2014-05-15
Category : Science
ISBN : 3731501856
Hysteretic loss optimisations through numerical simulation and subsequent experimental confirmation in transport current and background field measurements: ferromagnetic shielding and topological geometry optimisation is used to reduce energy dissipation in HTS coated conductor geometries. Single tapes and coil geometries are investigated. A 3D model capable of taking into account contact resistances is also presented for the Twisted Stacked Tape Conductor cable.
Author : Rizzo, Enrico
Publisher : KIT Scientific Publishing
Page : 232 pages
File Size : 46,33 MB
Release : 2014-03-27
Category : Technology & Engineering
ISBN : 3731501325
Techniques based on numerical simulations have been applied to the analysis of the heat exchanger and the High Temperature Superconductor (HTS) module of HTS current leads. In the first case correlations have been derived for the meander flow geometry. In the second case steady state and transient thermal-electric models have been validated. Both techniques are used to design and optimize HTS current leads. The correlations were applied to a predictive analysis of the ITER HTS current leads.
Author : Meckbach, Johannes Maximilian
Publisher : KIT Scientific Publishing
Page : 204 pages
File Size : 50,78 MB
Release : 2013-12-24
Category : Science
ISBN : 3731501228
Within this book fabrication processes for high-quality Josephson junctions based on niobium and aluminum oxide as well as niobium nitride and aluminum nitride on various substrates are discussed. Techniques for achieving a planar chip topography and sub-μm lateral dimensions, aiding the realization of sophisticated Josephson devices such as SQUIDs, flux-flow oscillators and long Josephson junctions with artificial phase discontinuities, are presented in detail.
Author :
Publisher :
Page : 724 pages
File Size : 43,62 MB
Release : 1986
Category : Science
ISBN :
Author : Merker, Michael
Publisher : KIT Scientific Publishing
Page : 230 pages
File Size : 33,49 MB
Release : 2019-12-17
Category : Technology & Engineering
ISBN : 3731509709
Author : Liu, Yingzhen
Publisher : KIT Scientific Publishing
Page : 228 pages
File Size : 46,30 MB
Release : 2020-11-18
Category : Technology & Engineering
ISBN : 373150796X
The trend towards larger power ratings of wind turbines asks for innovations in power generation, which requires lower weight and cost, smaller size, higher efficiency and reliability. Due to high current-carrying capability and no DC losses of superconductors, a superconducting wind generator can have a superior power to weight/volume ratio with high efficiency. The work in the book mainly focuses on the feasibility study and design of a superconducting DC wind generator.
Author : Otten, Simon J.
Publisher : KIT Scientific Publishing
Page : 208 pages
File Size : 46,26 MB
Release : 2019-05-13
Category : Technology & Engineering
ISBN : 3731509040
This work concerns the characterization of high-temperature superconducting REBCO Roebel cables for use in accelerator magnets. The effects of bending, torsion and compressive stress on the cable are investigated. The second part concerns the effect of inter-strand resistance on the cable properties. A two-parameter model is proposed to describe inter-strand connections and predict the effect on AC loss and stability. Additionally, the AC loss and stability are experimentally investigated.
Author : Kottonau, Dustin
Publisher : KIT Scientific Publishing
Page : 138 pages
File Size : 42,91 MB
Release : 2020-11-03
Category : Technology & Engineering
ISBN : 373151026X
Diese Studie führt eine Auslegung von supraleitenden Kabeln für die Anwendung im 380-kV-Drehstromnetz durch und erläutert allgemeine Aspekte des Einsatzes solcher Kabel im Höchstspannungsnetz. Dabei vergleicht sie die Supraleitungstechnologie unter vielen verschiedenen Kriterien mit anderen Leitungstechnologien. - This study describes the design of superconducting cables for use in the 380 kV three-phase network and explains general aspects of the use of such cables in the extra-high voltage grid. It compares the superconducting technology with other line technologies under many different criteria.
