scholarly journals Dipole Magnets Above 20 Tesla: Research Needs for a Path via High-Temperature Superconducting REBCO Conductors

Instruments ◽  
2019 ◽  
Vol 3 (4) ◽  
pp. 62 ◽  
Author(s):  
Xiaorong Wang ◽  
Stephen A. Gourlay ◽  
Soren O. Prestemon
Keyword(s):  
High Temperature ◽  
Technology Development ◽  
High Temperature Superconductors ◽  
National Laboratory ◽  
Dipole Field ◽  
Research Needs ◽  
Magnet Technology ◽  
Future Technology ◽  
The Status ◽  
Accelerator Magnets

To enable the physics research that continues to deepen our understanding of the Universe, future circular colliders will require a critical and unique instrument—magnets that can generate a dipole field of 20 T and above. However, today’s maturing magnet technology for low-temperature superconductors (Nb-Ti and Nb 3 Sn) can lead to a maximum dipole field of around 16 T. High-temperature superconductors such as REBCO can, in principle, generate higher dipole fields but significant challenges exist for both conductor and magnet technology. To address these challenges, several critical research needs, including direct needs on instrumentation and measurements, are identified to push for the maximum dipole fields a REBCO accelerator magnet can generate. We discuss the research needs by reviewing the current results and outlining the perspectives for future technology development, followed by a brief update on the status of the technology development at Lawrence Berkeley National Laboratory. We present a roadmap for the next decade to develop 20 T-class REBCO accelerator magnets as an enabling instrument for future energy-frontier accelerator complex.

scholarly journals R & D for accelerator magnets with react and wind high temperature superconductors

2002 ◽  
Vol 12 (1) ◽  
pp. 75-80 ◽  
Author(s):  
R. Gupta ◽  
M. Anerella ◽  
J. Cozzolino ◽  
J. Escallier ◽  
G. Ganetis ◽  
...  
Keyword(s):  
High Temperature ◽  
High Temperature Superconductors ◽  
Accelerator Magnets

Crystallization of nano-size thallous oxide during ion irradiation of Tl-Ba-Ca-Cu-O high-temperature superconductors

1995 ◽  
Vol 53 ◽  
pp. 214-215
Author(s):  
P. P. Newcomer ◽  
L. M. Wang ◽  
M. L. Miller ◽  
R. C. Ewing
Keyword(s):  
High Temperature ◽  
Ion Irradiation ◽  
Ion Beam ◽  
High Temperature Superconductors ◽  
National Laboratory ◽  
Argonne National Laboratory ◽  
Planetary Science ◽  
University Of New Mexico ◽  
The University ◽  
Nano Size

The Tl-Ba-Ca-Cu-O class of type-II high temperature superconductors (HTS) have Tc's as high as 125K. Although they have good critical current values, when a field is applied the weak pinning and consequent flow of magnetic vortices are a major impediment to the usefulness of these materials. Ion irradiation has been shown to enhance the pinning. High quality single crystals, as determined with x-ray precession and HRTEM, with sharp HTS Meissner signals, were irradiated with 1.5 MeV Kr+ and Xe+ ions using the HVEM-Tandem facility at Argonne National Laboratory. Ion beam microstructural modification was studied in-situ using electron diffraction and after irradiation using HRTEM and nano-beam EDS on Tl-1212 and Tl-2212 (numbers designate the stoichiometry Tl-Ba- Ca-Cu-O) single-crystal HTS. After irradiation, microstructure was studied using the JEOL 2010 in the Earth and Planetary Science Department at the University of New Mexico in order to characterize the resulting irradiation-induced nano-size precipitates.

scholarly journals Quench Detection and Protection for High-Temperature Superconductor Accelerator Magnets

Instruments ◽  
2021 ◽  
Vol 5 (3) ◽  
pp. 27
Author(s):  
Maxim Marchevsky
Keyword(s):  
High Temperature ◽  
High Temperature Superconductor ◽  
Hot Spot ◽  
High Temperature Superconductors ◽  
Zone Formation ◽  
Normal Zone ◽  
Normal Zone Propagation ◽  
Accelerator Magnets ◽  
Detection Schemes ◽  
Temperature Margin

High-temperature superconductors (HTS) are being increasingly used for magnet applications. One of the known challenges of practical conductors made with high-temperature superconductor materials is a slow normal zone propagation velocity resulting from a large superconducting temperature margin in combination with a higher heat capacity compared to conventional low-temperature superconductors (LTS). As a result, traditional voltage-based quench detection schemes may be ineffective for detecting normal zone formation in superconducting accelerator magnet windings. A developing hot spot may reach high temperatures and destroy the conductor before a practically measurable resistive voltage is detected. The present paper discusses various approaches to mitigating this problem, specifically focusing on recently developed non-voltage techniques for quench detection.

An Overview of High-Temperature Electronics and Sensor Development at NASA Glenn Research Center

2003 ◽  
Vol 125 (4) ◽  
pp. 658-664 ◽  
Author(s):  
Gary W. Hunter ◽  
Philip G. Neudeck ◽  
Robert S. Okojie ◽  
Glenn M. Beheim ◽  
J. A. Powell ◽  
...  
Keyword(s):  
High Temperature ◽  
Technology Development ◽  
Electronic Materials ◽  
Research Center ◽  
Sensor Technology ◽  
Technology Program ◽  
Sensor Development ◽  
High Temperature Electronics ◽  
Art And Technology ◽  
The Status

This paper gives a brief overview of the status of high-temperature electronics and sensor development at NASA Glenn Research Center supported in part or in whole by the Ultra Efficient Engine Technology Program. These activities contribute to the long-term development of an intelligent engine by providing information on engine conditions even in high temperature, harsh environments. The technology areas discussed are: 1) high-temperature electronics, 2) sensor technology development (pressure sensor and high-temperature electronic nose), 3) packaging of harsh environment devices and sensors, and 4) improved silicon carbide electronic materials. A description of the state-of-the-art and technology challenges is given for each area. It is concluded that the realization of a future intelligent engine depends on the development of both hardware and software including electronics and sensors to make smart components. When such smart components become available, an intelligent engine composed of smart components may become a reality.title

An Overview of High Temperature Electronics and Sensor Development at NASA Glenn Research Center

2002 ◽  
Author(s):  
Gary W. Hunter ◽  
Philip G. Neudeck ◽  
Robert S. Okojie ◽  
Glenn M. Beheim ◽  
J. A. Powell ◽  
...  
Keyword(s):  
High Temperature ◽  
Technology Development ◽  
Electronic Materials ◽  
Research Center ◽  
Sensor Technology ◽  
Technology Program ◽  
Sensor Development ◽  
High Temperature Electronics ◽  
Art And Technology ◽  
The Status

This paper gives a brief overview of the status of high temperature electronics and sensor development at NASA Glenn Research Center supported in part or in whole by the Ultra Efficient Engine Technology Program. These activities contribute to the long-term development of an intelligent engine by providing information on engine conditions even in high temperature, harsh environments. The technology areas discussed are: 1) High temperature electronics, 2) Sensor technology development (Pressure sensor and High temperature electronic nose), 3) Packaging of harsh environment devices and sensors, and 4) Improved Silicon Carbide electronic materials. A description of the state-of-the-art and technology challenges is given for each area. It is concluded that the realization of a future intelligent engine depends on the development of both hardware and software including electronics and sensors to make smart components. When such smart components become available, an intelligent engine composed of smart components may become a reality.

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