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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 21 for “"Superconducting magnet"”.
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Thermal Hydraulic numerical analysis of Fusion superconducting magnet systems
… purposes. ITER uses the sueperconducting magnet systems for trapping and maneuvering plasma inside the giant tokamak machines. Superconductivity only entails under the critical conditions of temperature, magnetic field and current density. If any of these parameters surpass the critical …
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Transient thermal recovery of a pulsed BSCCO-2223 superconducting magnet
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2000.
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Development of a Bulk Superconducting Magnet for Benchtop Nuclear Magnetic Resonance
Stacks of bulk high temperature superconducting (HTS) rings are promising candidates for the generation of the strong polarising fields required for nuclear magnetic resonance (NMR) when utilised as trapped field magnets (TFMs). To date, these stacks have been magnetised by the quasi-static field …
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A "permanent" high-temperature superconducting magnet operated in thermal communication with a mass of solid nitrogen
… explores a new design for a portable "permanent" superconducting magnet system. The design is an alternative to permanent low-temperature superconducting (LTS) magnet systems where the magnet is cooled by a bath of liquid helium. The new design involves a high-temperature superconducting (HTS) …
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Design and analysis of a liquid nitrogen delivery system for cooling a high temperature superconducting magnet for MAGLEV
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1995.
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Characterization of Nb₃Sn superconducting strand under pure bending
… strain-dependent behavior of technological Nb₃Sn superconducting strand has been an important subject of research for the past 25 years. Most of the effort has focused on understanding the uniaxial tension and compression effects and applying this information to improve predictive scaling laws …
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Stability and quench protection of high-temperature superconductors
In the design and operation of a superconducting magnet, stability and protection are two key issues that determine the magnet's reliability and safe operation. Although the high-temperature superconductor (HTS) is considered much more stable than the low-temperature superconductor (LTS), it is …
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Flux Pumping for No-Insulation High Temperature Superconducting REBCO Magnets
The high temperature superconducting (HTS) REBCO magnet has many advantages compared to the low temperature superconducting (LTS) magnet, including high operating temperature, high critical current under high magnetic fields, and strong mechanical properties. Due to these excellent properties, HTS …
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First on-line mass measurements at SHIPTRAP and mass determinations of neutron-rich Fr and Ra isotopes at ISOLTRAP
… ions extracted from the gas cell, and (iii) a superconducting magnet with two cylindrical Penning traps at a field strength of 7 T. In this work the Penning trap system has been installed and extensively characterized. The first on-line mass measurements of short-lived nuclides were carried out …
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Applications of Pulse-Magnetised Bulk Superconductors
Magnetic fields are used in a wide variety of scientific disciplines, especially those concerned with the macroscopic and microscopic examination of matter. Superconductors have proved to be the most economical form of generating magnetic fields when strong magnetic fields are required. In recent …
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Convective heat transfer model for determining quench recovery of high temperature superconducting YBCO in liquid nitrogen
Stability of a superconducting magnet is critical for reliable operation of a device in which the magnet plays a role. With the advent of high temperature superconductors (HTS), liquid nitrogen may be used to cool HTS devices. Yttrium barium copper oxide (YBCO), an HTS with critical temperature of …
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Beam-Induced Radiation Heating on the Superconducting Undulator at the Advanced Photon Source
… a 7 GeV synchrotron X-ray source, commissioned a Superconducting Undulator (SCU). The superconducting magnet is thermally isolated from the beam vacuum chamber, which absorbs the beam-induced heating. Previous beam induced heat load studies at other laboratories had not included a robust …
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The computer simulation of quenching in superconducting magnets
… describes the reversion of an operating superconducting magnet to its normally resistive state. This involves change the conversion of stored magnetic energy to heat. It is usually accompanied by the generation of high temperatures, voltages and stresses, because of the large amount of …
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Cryogenic characteristics of IGBTs
Applications are now starting to emerge for superconducting devices in the areas of electrical power conversion and management, for example superconducting windings for marine propulsion motors, superconducting fault current limiters and superconducting magnet energy storage (SMES). Many of these …
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Two-dimensional quench propagation model for a three-dimensional "high-temperature" superconducting coil
… is a thermal failure mechanism encountered with superconducting magnets. When a section of conductor is driven normal by an external heat input, the magnet transport current flows through a resistance, causing joule dissipation. If heat is not conducted away from the normal region faster than it …
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The application of high temperature superconducting materials to power switches
Superconducting switches may nd application in superconducting magnet systems that require energy extraction. Such superconducting switches could be bypass-switches that are operated in conjunction with a parallel resistor or dump-switches where all of the energy is dissipated in the switch itself. …
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A persistent-mode MgB₂ 0.5-T/240-mm solid-nitrogen-cooled magnet for MRI
Magnetic resonance imaging (MRI) has become one of the major noninvasive diagnostic imaging tools today. The annual $5-billion market drives magnet engineers to develop advanced and innovative, high-quality, low-cost, easy-to-operate MRI magnets. Because superconductors carry more than 100 times …
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DESIGN AND STUDY OF THE IRIS 10 T ENERGY SAVING DIPOLE MAGNET FOR ACCELERATORS: ESMA
The research and development of new superconducting materials is progressively refining the manufacturing of a new class of conductors: REBCO tapes. Although REBCO was discovered in 1987, tape manufacturing suitable for magnet windings has only recently been optimized. REBCO tapes belong to the …
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Electron reconstruction in simulated Pb+Pb events in CMS
… CMS detector there will be a roughly constant magnetic field 4.0 Tesla maintained by a superconducting magnet, which allows good measurement of the particle momentum. A slice of the detector is shown in Figure 1. The detector consists of several parts, from inside to outside there are silicon …
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Study of Second Generation High Temperature Superconductors: Electromagnetic Characteristics and AC Loss Analysis
… Superconductors, which covers their electromagnetic characteristics and AC loss analysis. Lorentz Force Electrical Impedance Tomography (LFEIT) is one of the most promising hybrid diagnostic scanners with burgeoning potential for biological imaging, particularly in the detection of cancer …
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