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Real-time imaging systems for superconducting nanowire single-photon detector arrays

Real-time imaging systems for superconducting nanowire single-photon detector arrays
Author: Hofherr, Matthias
Publisher: KIT Scientific Publishing
Total Pages: 216
Release: 2014-09-26
Genre: Technology & Engineering
ISBN: 3731502291

Download Real-time imaging systems for superconducting nanowire single-photon detector arrays Book in PDF, ePub and Kindle

Superconducting nanowire singe-photon detectors (SNSPD) are promising detectors in the field of applications, where single-photon resolution is required like in quantum optics, spectroscopy or astronomy. These cryogenic detectors gain from a broad spectrum in the optical and infrared range and deliver low dark count rates and low jitter times. This thesis improves the understanding of the detection mechanism of SNSPDs and intodruces new and promising multi-pixel readout concepts.


Real-time Imaging Systems for Superconducting Nanowire Single-photon Detector Arrays

Real-time Imaging Systems for Superconducting Nanowire Single-photon Detector Arrays
Author: Matthias Hofherr
Publisher:
Total Pages: 208
Release: 2020-10-09
Genre: Science
ISBN: 9781013279614

Download Real-time Imaging Systems for Superconducting Nanowire Single-photon Detector Arrays Book in PDF, ePub and Kindle

Superconducting nanowire singe-photon detectors (SNSPD) are promising detectors in the field of applications, where single-photon resolution is required like in quantum optics, spectroscopy or astronomy. These cryogenic detectors gain from a broad spectrum in the optical and infrared range and deliver low dark count rates and low jitter times. This thesis improves the understanding of the detection mechanism of SNSPDs and intodruces new and promising multi-pixel readout concepts. This work was published by Saint Philip Street Press pursuant to a Creative Commons license permitting commercial use. All rights not granted by the work's license are retained by the author or authors.


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

Download Technology and readout for scaling up superconducting nanowire single-photon detectors Book in PDF, ePub and Kindle

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.


Characterization of High Temperature Superconductor Cables for Magnet Toroidal Field Coils of the DEMO Fusion Power Plant

Characterization of High Temperature Superconductor Cables for Magnet Toroidal Field Coils of the DEMO Fusion Power Plant
Author: Bayer, Christoph M.
Publisher: KIT Scientific Publishing
Total Pages: 222
Release: 2017-02-16
Genre: Physics
ISBN: 373150605X

Download Characterization of High Temperature Superconductor Cables for Magnet Toroidal Field Coils of the DEMO Fusion Power Plant Book in PDF, ePub and Kindle

Nuclear fusion is a key technology to satisfy the basic demand for electric energy sustainably. The official EUROfusion schedule foresees a first industrial DEMOnstration Fusion Power Plant for 2050. In this work several high temperature superconductor sub-size cables are investigated for their applicability in large scale DEMO toroidal field coils. Main focus lies on the electromechanical stability under the influence of high Lorentz forces at peak magnetic fields of up to 12 T.


Development of an Air Coil Superconducting Fault Current Limiter

Development of an Air Coil Superconducting Fault Current Limiter
Author: Naeckel, Oliver
Publisher: KIT Scientific Publishing
Total Pages: 220
Release: 2016-11-14
Genre: Physics
ISBN: 3731505266

Download Development of an Air Coil Superconducting Fault Current Limiter Book in PDF, ePub and Kindle

Electrical power grids are the lifeline of technical infrastructure and fundamental for industry and modern lives. Fault Currents can disrupt the continuous supply of electrical energy, cause instable grid conditions and damage electrical equipment. The Air Coil Superconducting Fault Current Limiter (AC-SFCL) is a measure to effectively limit fault currents. The concept is investigated and proven experimentally by designing, building and successfully testing a 60 kV, 400 V, z = 6% demonstrator.


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

Download Fluorescent thermal imaging method for investigating transient effects in high-temperature superconductor tapes and coils Book in PDF, ePub and Kindle

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.