| Autor: |
Chin-Kang Yang, Wen-Hsuan Hsieh, Yun-Liang Chu, Chang, C. H., Cheng-Ying Kuo, Sei-Da Chen, Jui-Che Huang, Ching-Shiang Hwang |
| Předmět: |
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| Zdroj: |
IEEE Transactions on Applied Superconductivity; Apr2018, Vol. 28 Issue 3, p1-5, 5p |
| Abstrakt: |
A cryogenic permanent-magnet undulator (CPMU) with a 15-mm period length is being constructed for the TPS. Field measurements of this undulator will be performed with a Hall probe at cryogenic temperatures, for which a field strength and temperature-dependent calibration system is necessary. This system consists of a cryo-cooler and a heater to control the Hall probe temperature, a home-made dipole electromagnet, a nuclear magnetic resonant Tesla meter, and two angle adjusting stages. These stages will rotate the Hall probe to adjust the angular accuracy of the Hall probe axes with respect to a reference ceramic surface and to measure the planar Hall effect coefficient. A two-axis compact 0.9-mm SENIS Hall probe is used in the very small gap of 4 mm of this CPMU. Design details and performance of this system, its calibrating process, and calibration results at various temperatures will be discussed in this paper. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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