Stability of Superconductors

Stability of Superconductors PDF

Author: Lawrence Dresner

Publisher: Springer Science & Business Media

Published: 2006-04-11

Total Pages: 237

ISBN-13: 0306470640

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In this definitive text in the field, the author gives a detailed account of the major problem of applied superconductivitiy-the stability of superconductors. His work focuses on the application of superconductiors to the construction of magnets. Students and engineers will discover the underlying principles of applied superconductivity and will learn how to solve mathematical problems with advanced methods of calculation.

Stabilization of Superconducting Magnetic Systems

Stabilization of Superconducting Magnetic Systems PDF

Author: V. Al'tov

Publisher: Springer Science & Business Media

Published: 2013-03-09

Total Pages: 343

ISBN-13: 1461341159

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I am indeed pleased to prepare this brief foreword for this book, written by several of my friends and colleagues in the Soviet Union. The book was first published in the Russian language in Moscow in 1975. The phenomenon of superconductivity was discovered in 1911 and promised to be important to the production of electromagnets since superconductors would not dissipate Joule heat. Unfortunate ly the first materials which were discovered to be superconducting reverted to the normal resistive state in magnetic fields of a few tesla. Thus the development that was hoped for by hundredths of a the early pioneers was destined to be delayed for over half a century. In 1961 the intermetallic compound NbaSn was found to be superconducting in a field of about 200 teslas. This breakthrough marked a turning point, and 50 years after the discovery of superconductivity an intensive period of technological development began. There are many applications of superconductivity that are now being pursued, but perhaps one of the most important is super conducting magnetic systems. There was a general feeling in the early 1960s that the intermetallic compounds and alloys that were found to retain superconductivity in the presence of high magnetic fields would make the commercialization of superconducting magnets a relatively simple matter. However, the next few years were ones of disillusionment; large magnets were found to be unstable, causing them to revert to the normal state at much lower magnetic fields than predicted.

Handbook of Applied Superconductivity, Volume 2

Handbook of Applied Superconductivity, Volume 2 PDF

Author: B Seeber

Publisher: CRC Press

Published: 1998-01-01

Total Pages: 1258

ISBN-13: 9781420050271

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The Handbook of Applied Superconductivity, Two-Volume Set covers all important aspects of applied superconductivity and the supporting low-temperature technologies. The handbook clearly demonstrates the capabilities of superconducting technologies and illustrates how to implement these technologies in new areas of academic and industrial research and development. Volume One provides an introduction to the theoretical background of both low and high Tc superconductivity, followed by details of the basic hardware such as wires, tapes, and cables used in applications of superconductivity and the necessary supporting science and technology. Theoretical discussions are in most cases followed by examples of real designs, fabrication techniques, and practical instrumentation guidance. A final chapter examines materials properties at low temperatures. Volume Two provides examples of current and future applications of superconductivity. It covers medical systems for magnetic resonance imaging (MRI), high field magnets for research, superconducting magnets for accelerators, industrial systems for magnetic separation, and transportation systems. The final chapters look to future applications in power and superconducting electronics. With fully referenced, peer-refereed contributions from experts in various fields, this two-volume work is an essential reference for a wide range of scientists and engineers in academic and industrial research and development environments.

Superconductivity

Superconductivity PDF

Author: R.G. Sharma

Publisher: Springer

Published: 2015-02-26

Total Pages: 427

ISBN-13: 3319137131

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This book presents the basics and applications of superconducting magnets. It explains the phenomenon of superconductivity, theories of superconductivity, type II superconductors and high-temperature cuprate superconductors. The main focus of the book is on the application to superconducting magnets to accelerators and fusion reactors and other applications of superconducting magnets. The thermal and electromagnetic stability criteria of the conductors and the present status of the fabrication techniques for future magnet applications are addressed. The book is based on the long experience of the author in studying superconducting materials, building magnets and numerous lectures delivered to scholars. A researcher and graduate student will enjoy reading the book to learn various aspects of magnet applications of superconductivity. The book provides the knowledge in the field of applied superconductivity in a comprehensive way.

Numerical Modeling Of Superconducting Applications: Simulation Of Electromagnetics, Thermal Stability, Thermo-hydraulics And Mechanical Effects In Large-scale Superconducting Devices

Numerical Modeling Of Superconducting Applications: Simulation Of Electromagnetics, Thermal Stability, Thermo-hydraulics And Mechanical Effects In Large-scale Superconducting Devices PDF

Author: Bertrand Dutoit

Publisher: World Scientific

Published: 2023-03-24

Total Pages: 329

ISBN-13: 9811271453

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This book aims to present an introduction to numerical modeling of different aspects of large-scale superconducting applications: electromagnetics, thermal, mechanics and thermo-hydraulics. The importance of computational modeling to advance current superconductor research cannot be overlooked, especially given the enormous benefits provided by superconductors in many human endeavours, including energy generation, medical treatments, and future electrical technologies.Aimed at graduate students, researchers and practitioners in different fields of applied superconductivity, this book consists of four chapters. The chapter on electromagnetics provides a review of the state-of-the-art modeling of electromagnetic phenomena in superconductors, emphasising the theoretical aspects of the different numerical formulations. This is followed by a chapter on thermal effects, dedicated to the simulation of thermal stability and quench in superconducting magnets, with specific examples of magnets used in particle accelerators. Then, the chapter on mechanics provides details of the modeling of forces and stresses in cables composed of second-generation high-temperature superconducting wires. Finally, the chapter on thermo-hydraulics focuses on the fundamental thermal-hydraulic aspects involved in the cooling of superconducting magnets, with special reference to the issues related to the forced-flow cooling.

Handbook of Superconductivity

Handbook of Superconductivity PDF

Author: Charles K. Poole

Publisher: Elsevier

Published: 1999-10-29

Total Pages: 709

ISBN-13: 0080533213

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The field of superconductivity has tremendous potential for growth and further development in industrial applications. The subject continues to occupy physicists, chemists, and engineers interested in both the phenomena itself and possible financially viable industrial devices utilizing the physical concepts. For the past five years, within the publications of the American Physical Society, for example, 40%-60% of all articles submitted to major journals in the area of Solid State Physics have been on the subject of superconductivity, including the newer, extremely important subfield of high temperature superconductivity (high Tc). The present volume is the first handbook to address this field. It covers both "classic" superconductivity-related topics and high Tc. Numerous properties, including thermal, electrical, magnetic, mechanical, phase diagrams, and spectroscopic crystallographic structures are presented for many types of superconductors. Critical fields, critical currents, coherence lengths, penetration depths, and transition temperatures are tabulated. First handbook on Superconductivity Coherence lengths and depths are tabulated Crystallographic structures of over 100 superconductor types Main results of several theories are submitted Phase diagrams for synthesizing new superconductors are included

Stability Projections for High Temperature Superconductors

Stability Projections for High Temperature Superconductors PDF

Author:

Publisher:

Published: 1990

Total Pages: 24

ISBN-13:

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The stability of the new high temperature superconducting oxides has been analyzed using the methodology developed over the last 25 years for conventional Type II superconductors. The results are presented in graphical form for the temperature range from 4 to 100 K. For a 90 K superconductor the first flux jump field peaks above 7T at 60 K. The adiabatic stability limit increases dramatically. THe linear dimension of the minimum propagating zone increases by a factor of 3 to 5, and the quench propagation velocity drops by 4 orders of magnitude. The high temperature superconducting materials will, therefore, have much higher stability than conventional Type II superconductors; their high flux jump fields make ultra-fine multi-filamentary conductors unnecessary, and improve the outlook for tape conductors; the energy to create a propagating zone is increased; but methods of coil protection will have to be modified.

Case Studies in Superconducting Magnets

Case Studies in Superconducting Magnets PDF

Author: Yukikazu Iwasa

Publisher: Springer Science & Business Media

Published: 2006-04-11

Total Pages: 435

ISBN-13: 0306470624

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Designed for graduate students in mechanical engineering, this textbook discusses the basic concepts of superconducting magnet technology. Important topics covered include field distribution, magnets, force, thermal stability, dissipation, and protection. To help the students excel in the field, each chapter contains tutorial problems, accompanied by solutions, utilizing solenoidal magnets as examples.

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