NDLI: A Novel Design of Thermally Actuated Magnetization Flux Pump for High Temperature Superconducting Bulks

Content Provider	IEEE Xplore Digital Library
Author	Yu Yan Chiahao Hsu Zhiyong Hong Wei Xian Weijia Yuan Coombs, T.A.
Copyright Year	2002
Abstract	High temperature superconductors, such as melt-processed YBCO bulks, have great advantages on trapping strong magnetic fields in liquid nitrogen. To enable them to function well, there are some traditional ways of magnetizing them, in which the YBCO bulks are magnetized instantly under a very strong source of magnetic field. These ways would consume great amounts of power to make the superconductors trap as much field as possible. Thermally Actuated Magnetization (TAM) Flux pump has been proved a perfect substitution for these expensive methods by using a relatively small magnet as the source. In this way, the field is developed gradually over many pulses. Unlike conventional flux pumping ways, the TAM does not drive the superconductor normal during the process of magnetization. In former experiments for the flux pump, some fundamental tests were done. In this paper, the experiment system is advanced to a new level with better temperature control to the thermal waves moving in the Gadolinium and with less air gap for the flux lines sweeping through the superconductor. This experiment system leads to a stronger accumulation of the magnetic field trapped in the YBCO bulk. We also tried different ways of sending the thermal waves and found out that the pumping effect is closely related to the power of the heaters and the on and off time.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	1568
Ending Page	1571
Page Count	4
File Size	725409
File Format	PDF
ISSN	10518223
Volume Number	21
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Superconducting magnets Yttrium barium copper oxide Magnetization Heating Magnetic hysteresis thermal actuate Flux jump magnetization processes superconducting magnets
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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Thermally Actuated Magnetization Method in High Temperature Superconductor Bulks

Flux-trapping characteristics of oxide superconducting bulks in array

Coupled Thermal-Magnetic Analysis on Thermally Actuated Superconducting Flux Pump

Flux trapping characteristics of YBCO bulks using pulse magnetization [superconducting magnets]

Sensitivity of the Field Trapped by Superconducting Bulks on the Parameters of the Magnetization Process

The Next Generation of Superconducting Permanent Magnets: The Flux Pumping Method

Magnetization distribution in a superconducting bulk by means of hysteretic material characteristic as constitutive law

Qualification of the Machining and Fitting Precision of YBCO Bulks and Rings Joined Together via the Examination of the Trapped Flux

Trapped Flux and Levitation Properties of Multiseeded YBCO Bulks for HTS Magnetic Device Applications—Part II: Practical and Achievable Performance

A Novel Design of Thermally Actuated Magnetization Flux Pump for High Temperature Superconducting Bulks

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