Development of NbN based Kinetic Inductance Detectors on sapphire and diamond substrates for fusion plasma polarimetric diagnostics

Development of NbN based Kinetic Inductance Detectors on sapphire and diamond substrates for fusion plasma polarimetric diagnostics
Title Development of NbN based Kinetic Inductance Detectors on sapphire and diamond substrates for fusion plasma polarimetric diagnostics PDF eBook
Author Mazzocchi, Francesco
Publisher KIT Scientific Publishing
Pages 212
Release 2022-07-01
Genre Technology & Engineering
ISBN 3731511819

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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.

Dynamic Model-based Analysis of Oxygen Reduction Reaction in Gas Diffusion Electrodes

Dynamic Model-based Analysis of Oxygen Reduction Reaction in Gas Diffusion Electrodes
Title Dynamic Model-based Analysis of Oxygen Reduction Reaction in Gas Diffusion Electrodes PDF eBook
Author Röhe, Maximilian
Publisher KIT Scientific Publishing
Pages 178
Release 2024-01-09
Genre
ISBN 3731512343

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In this work, the first simulation model of oxygen depolarized cathodes (ODC), which are silver catalyst-based gas diffusion electrodes, is presented that considers the phase equilibrium of the gas-liquid interface and structure-related inhomogeneities in electrolyte distribution. By means of the model it has been identified that mass transport of water and ions in the liquid phase is a crucial factor for electrode performance and how it is influenced by the electrode structure.

Application of Data Mining and Machine Learning Methods to Industrial Heat Treatment Processes for Hardness Prediction

Application of Data Mining and Machine Learning Methods to Industrial Heat Treatment Processes for Hardness Prediction
Title Application of Data Mining and Machine Learning Methods to Industrial Heat Treatment Processes for Hardness Prediction PDF eBook
Author Lingelbach, Yannick
Publisher KIT Scientific Publishing
Pages 278
Release 2024-07-24
Genre
ISBN 3731513528

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This work presents a data mining framework applied to industrial heattreatment (bainitization and case hardening) aiming to optimize processes and reduce costs. The framework analyses factors such as material, production line, and quality assessment for preprocessing, feature extraction, and drift corrections. Machine learning is employed to devise robust prediction strategies for hardness. Its implementation in an industry pilot demonstrates the economic benefits of the framework. - This work presents a data mining framework applied to industrial heattreatment (bainitization and case hardening) aiming to optimize processes and reduce costs. The framework analyses factors such as material, production line, and quality assessment for preprocessing, feature extraction, and drift corrections. Machine learning is employed to devise robust prediction strategies for hardness. Its implementation in an industry pilot demonstrates the economic benefits of the framework.

Multiscale Modeling of Curing and Crack Propagation in Fiber-Reinforced Thermosets

Multiscale Modeling of Curing and Crack Propagation in Fiber-Reinforced Thermosets
Title Multiscale Modeling of Curing and Crack Propagation in Fiber-Reinforced Thermosets PDF eBook
Author Schöller, Lukas
Publisher KIT Scientific Publishing
Pages 230
Release 2024-03-15
Genre
ISBN 3731513404

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During the production of fiber-reinforced thermosets, the resin material undergoes a reaction that can lead to damage. A two-stage polymerization reaction is modeled using molecular dynamics and evaluations of the system including a fiber surface are performed. In addition, a phase-field model for crack propagation in heterogeneous systems is derived. This model is able to predict crack growth where established models fail. Finally, the model is used to predict crack formation during curing.

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

Development of high-temperature superconductor cables for high direct current applications
Title Development of high-temperature superconductor cables for high direct current applications PDF eBook
Author Preuß, Alan
Publisher KIT Scientific Publishing
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.

Ultra-Wideband, Short-Pulse Electromagnetics 7

Ultra-Wideband, Short-Pulse Electromagnetics 7
Title Ultra-Wideband, Short-Pulse Electromagnetics 7 PDF eBook
Author Frank Sabath
Publisher Springer Science & Business Media
Pages 864
Release 2010-05-30
Genre Science
ISBN 038737731X

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This book presents selected contributions of the Ultra-Wideband Short-Pulse Electromagnetics 7 Conference, including electromagnetic theory, scattering, Ultrawideband (UWB) antennas, UWB systems, ground penetrating radar, UWB communications, pulsed-power generation, time-domain computational electromagnetics, UWB compatibility, target detection and discrimination, propagation through dispersive media, and wavelet and multi-resolution techniques.

Thermionic Electron Sources

Thermionic Electron Sources
Title Thermionic Electron Sources PDF eBook
Author George A. Haas
Publisher
Pages 38
Release 1961
Genre Thermionic emission
ISBN

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A survey of the emission characteristics of modern thermionic electron sources is presented. In addition to a discussion of recent advances among the more commonly used emitters such as oxide cathodes, thoriated cathodes, and metal c thodes, a tabulation of the thermionic properties of over one hundred various new matrix and refractory-coated cathodes is given. (Author).