THz and Security Applications

THz and Security Applications
Author: Carlo Corsi
Publisher: Springer
Total Pages: 317
Release: 2014-05-06
Genre: Science
ISBN: 9401788286
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These proceedings comprise invited papers from highly experienced researchers in THz technology and security applications. THz detection of explosives represents one of the most appealing technologies to have recently emerged in dealing with terrorist attacks encountered by civil security and military forces throughout the world. Discussed are the most advanced technologies and developments, the various points of operational strength and weaknesses as well as are suggestions and predictions the best technological solutions to overcome current operational limits. The current status of various levels of cooling in THz detectors, sources and associated electronics are also addressed. The goal was to provide a clear view on the current technologies available and the required advances needed in order to achieve more efficient systems. This goal was outlined in part by establishing the baseline of current uncertainty estimations in physics-based modelling and the identification of key areas which require additional research and development.

Evaluation of the Use of Superconducting 380 kV Cable

Evaluation of the Use of Superconducting 380 kV Cable
Author: Kottonau, Dustin
Publisher: KIT Scientific Publishing
Total Pages: 138
Release: 2020-11-03
Genre: Technology & Engineering
ISBN: 373151026X
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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.

Technology and readout for scaling up superconducting nanowire single-photon detectors

Technology and readout for scaling up superconducting nanowire single-photon detectors
Author: Knehr, Emanuel Marius
Publisher: KIT Scientific Publishing
Total Pages: 200
Release: 2023-03-02
Genre: Technology & Engineering
ISBN: 3731512564
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This work presents three advances to scale SNSPDs from few-pixel devices to large detector arrays: atomic layer deposition for the fabrication of uniform superconducting niobium nitride films of few-nanometer thickness, a frequency-multiplexing scheme to operate multiple detectors with a reduced number of lines, and the integration of SNSPDs with free-form polymer structures to achieve efficient optical coupling onto the active area of the detectors.

Development of high-temperature superconductor cables for high direct current applications

Development of high-temperature superconductor cables for high direct current applications
Author: Preuß, Alan
Publisher: KIT Scientific Publishing
Total Pages: 194
Release: 2021-01-14
Genre: Technology & Engineering
ISBN: 3731510413
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A design process for HTS DC cables was developed for high current applications. Based on the design process, a 35 kA HTS DC cable demonstrator was developed. The superconducting elements of the demonstrator were manufactured and tested individually at 77 K. Afterwards, the demonstrator cable was assembled and tested at 77 K. The assembled demonstrator successfully reached 35 kA at 77 K and self field conditions.

Prospective Life Cycle Assessment of High-Temperature Superconductors for Future Grid Applications

Prospective Life Cycle Assessment of High-Temperature Superconductors for Future Grid Applications
Author: Buchholz, Alexander
Publisher: KIT Scientific Publishing
Total Pages: 246
Release: 2022-07-27
Genre: Technology & Engineering
ISBN: 3731511940
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High-temperature superconductors have distinct advantages compared to conventional conductors. Below their critical temperature, superconductors have immeasurably low ohmic losses. To maintain the superconducting state, superconductors require constant cooling. This study aims at identifying the environmental impacts of the application of superconductors in future grid technologies such as superconducting power cables.

AC Losses in High-Temperature Superconductor Tapes and Cables for Power Applications

AC Losses in High-Temperature Superconductor Tapes and Cables for Power Applications
Author: Godfrin, Aurélien
Publisher: KIT Scientific Publishing
Total Pages: 146
Release: 2022-05-10
Genre: Technology & Engineering
ISBN: 3731510960
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This work focuses on two topics. The first is the investigation of producing filaments on copper-stabilized coated conductors, with striations made after or before electroplating the tape. The second topic is the applicability of the striations for reducing the AC losses of cables, in particular the CORC® and RACC cables, which are made with high-temperature superconductor (HTS) striated tapes.

Fluorescent thermal imaging method for investigating transient effects in high-temperature superconductor tapes and coils

Fluorescent thermal imaging method for investigating transient effects in high-temperature superconductor tapes and coils
Author: Gyuráki, Roland
Publisher: KIT Scientific Publishing
Total Pages: 194
Release: 2022-02-24
Genre: Science
ISBN: 3731510642
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This work presents the development and application of high-speed fluorescent thermal imaging for quench analysis in high-temperature superconductors (HTS). Using a fluorescent coating, with a temperature-dependent light emission, temperature changes can be calculated over 2D surfaces. The technique uncovered peculiar transient effects in novel HTS tape architectures and also helped to verify and better understand hot spot development in both insulated and non-insulated, HTS–wound pancake coils.

Superconductors at the Nanoscale

Superconductors at the Nanoscale
Author: Roger Wördenweber
Publisher: Walter de Gruyter GmbH & Co KG
Total Pages: 590
Release: 2017-09-11
Genre: Science
ISBN: 3110456249
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By covering theory, design, and fabrication of nanostructured superconducting materials, this monograph is an invaluable resource for research and development. Examples are energy saving solutions, healthcare, and communication technologies. Key ingredients are nanopatterned materials which help to improve the superconducting critical parameters and performance of superconducting devices, and lead to novel functionalities. Contents Tutorial on nanostructured superconductors Imaging vortices in superconductors: from the atomic scale to macroscopic distances Probing vortex dynamics on a single vortex level by scanning ac-susceptibility microscopy STM studies of vortex cores in strongly confined nanoscale superconductors Type-1.5 superconductivity Direct visualization of vortex patterns in superconductors with competing vortex-vortex interactions Vortex dynamics in nanofabricated chemical solution deposition high-temperature superconducting films Artificial pinning sites and their applications Vortices at microwave frequencies Physics and operation of superconducting single-photon devices Josephson and charging effect in mesoscopic superconducting devices NanoSQUIDs: Basics & recent advances Bi2Sr2CaCu2O8 intrinsic Josephson junction stacks as emitters of terahertz radiation| Interference phenomena in superconductor-ferromagnet hybrids Spin-orbit interactions, spin currents, and magnetization dynamics in superconductor/ferromagnet hybrids Superconductor/ferromagnet hybrids