Download or read book Development of lumped element kinetic inductance detectors for mm wave astronomy at the IRAM 30 m telescope written by Rösch, Markus and published by KIT Scientific Publishing. This book was released on 2014-01-21 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis studies the development of LEKID arrays for the use in a mm-wave camera for the IRAM 30m telescope. This includes the design and fabrication of the superconducting microresonators, the modeling and optimization of the mm-wave coupling to the detector and the characterization of the arrays at low temperatures. The results obtained brought IRAM to test a prototype instrument at the telescope, where first astronomical results have been achieved, which are also presented in this work.

Download or read book Development of Lumped Element Kinetic Inductance Detectors for Mm wave Astronomy at the IRAM 30 M Telescope written by Markus Rösch and published by . This book was released on 2020-10-09 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis studies the development of LEKID arrays for the use in a mm-wave camera for the IRAM 30m telescope. This includes the design and fabrication of the superconducting microresonators, the modeling and optimization of the mm-wave coupling to the detector and the characterization of the arrays at low temperatures. The results obtained brought IRAM to test a prototype instrument at the telescope, where first astronomical results have been achieved, which are also presented in this work. 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.

Download or read book Development of NbN based Kinetic Inductance Detectors on sapphire and diamond substrates for fusion plasma polarimetric diagnostics written by Mazzocchi, Francesco and published by KIT Scientific Publishing. This book was released on 2022-07-01 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work aimed at designing, studying and producing the first prototypes of KIDs tailored for fusion plasma polarimetric diagnostics. Diamond was considered for the first time as substrate material for low-temperature superconducting detectors given its unmatched optical, radiation hardness and thermal qualities, properties necessary for working environments potentially saturated with radiation. This work represents a first step toward the optimization and final application of this technology.

Download or read book Real time imaging systems for superconducting nanowire single photon detector arrays written by Hofherr, Matthias and published by KIT Scientific Publishing. This book was released on 2014-09-26 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Research and Technology Development on Superconducting Current Limiting Transformers written by Hellmann, Sebastian and published by KIT Scientific Publishing. This book was released on 2020-01-10 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Development of high temperature superconductor cables for high direct current applications written by Preuß, Alan and published by KIT Scientific Publishing. This book was released on 2021-01-14 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Development of an Air Coil Superconducting Fault Current Limiter written by Naeckel, Oliver and published by KIT Scientific Publishing. This book was released on 2016-11-14 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Magnetization of High Temperature Superconducting Trapped Field Magnets written by Zou, Shengnan and published by KIT Scientific Publishing. This book was released on 2017-12-01 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: High temperature superconducting (HTS) bulks and stacks of coated conductors can be magnetized to become trapped-field magnets that provide much stronger magnetic fields than those reachable with conventional permanent magnets. This work investigates the flux dynamics during the magnetization of HTS trapped-field magnets and proposes possible strategies to improve the trapped field produced by the pulsed field magnetization method that is promising for practical applications.

Download or read book Improving the Spectral Bandwidth of Superconducting Nanowire Single Photon Detectors SNSPDs written by Charaev, Ilya and published by KIT Scientific Publishing. This book was released on 2018-07-31 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work presents a comprehensive investigation of the influence of geometry-dependent factors on performance metrics of superconducting single-photon detectors. With fundamental knowledge, main investigations are focused to extend the spectral bandwidth and to enhance the detection efficiency, especially in infrared range. The developed technology of single-spiral detectors and unconventional electron-beam lithography allows to improve the performance of superconducting detectors.

Download or read book Electrical field sensitive YBa Cu O detectors for real time monitoring of picosecond THz pulses written by Raasch, Juliane and published by KIT Scientific Publishing. This book was released on 2019-04-23 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technology and readout for scaling up superconducting nanowire single photon detectors written by Knehr, Emanuel Marius and published by KIT Scientific Publishing. This book was released on 2023-03-02 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Superconducting Nanowire Single Photon Detectors for Quantum Photonic Integrated Circuits on GaAs written by Schmidt, Wolfgang-Gustav Ekkehart and published by KIT Scientific Publishing. This book was released on 2020-07-09 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Characterization of High Temperature Superconductor Cables for Magnet Toroidal Field Coils of the DEMO Fusion Power Plant written by Bayer, Christoph M. and published by KIT Scientific Publishing. This book was released on 2017-02-16 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book AC Losses in High Temperature Superconductor Tapes and Cables for Power Applications written by Godfrin, Aurélien and published by KIT Scientific Publishing. This book was released on 2022-05-10 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Nuclear fusion current lead High Temperature Superconductor Numerical simulation Computational thermal Fluid Dynamics written by Rizzo, Enrico and published by KIT Scientific Publishing. This book was released on 2014-03-27 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Fluorescent thermal imaging method for investigating transient effects in high temperature superconductor tapes and coils written by Gyuráki, Roland and published by KIT Scientific Publishing. This book was released on 2022-02-24 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Prospective Life Cycle Assessment of High Temperature Superconductors for Future Grid Applications written by Buchholz, Alexander and published by KIT Scientific Publishing. This book was released on 2022-07-27 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.