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A low-energy compact electron beam irradiator for core-loss reduction of silicon steel

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9 Author(s)
Min Kim ; Dept. of Electr. & Electron. Eng., Dong-shin Univ., Naju, South Korea ; Jeong-Phil Yoon ; Gi-Je Lee ; In-Su Cha
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A new compact, low-energy electron beam irradiator has been developed. The core loss of silicon steels can be reduced by the magnetic-domain refinement method. The irradiator was developed for the application of core-loss reduction using the method. The beam energy of the irradiator can be varied from 35 to 80 keV and the maximum current is 3 mA. The irradiation area is designed to be 30×30 mm2 now and will be upgraded to 30×150 mm2 using a scanning magnet and scanning cone. The electron beam generated from 3 mm diameter LaB6 is extracted to the air for the irradiation of the silicon steels in the air. A special irradiation port was developed for this low-energy irradiator. A havar foil with 4.08 μm thickness were used for the window and a cold air-cooling system keeps the foil structure by removing heat at the window. The irradiator system and its operation characteristics are discussed

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Industrial Electronics Society, 2001. IECON '01. The 27th Annual Conference of the IEEE  (Volume:3 )

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