磁偏轉(zhuǎn)線圈的優(yōu)化設(shè)計(jì)
OPTIMIZATION OF THE MAGNETIC DEFLECTION SYSTEM
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摘要: 本文由謝志行等(1987)給出的場參數(shù)表達(dá)式,借助正交設(shè)計(jì)法,對帶屏蔽筒鞍形偏轉(zhuǎn)線圈進(jìn)行了優(yōu)化設(shè)計(jì),所得結(jié)果與實(shí)際模型相符。指出了鞍形偏轉(zhuǎn)線圈的端耳效應(yīng)和場參數(shù)B0(z)分布對象差的重要貢獻(xiàn)。例示了有限長余弦分布繞組與分布式繞組之間電子光學(xué)性能的比較。
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關(guān)鍵詞:
Abstract: This is the second one of two papers about designing the saddle deflection yoke with 3 ferromagnetic shield. By using the expressions of the field parameters given by the author et al (1987) and with the aid of orthogonal design method, we optimized the design of the saddle deflection yoke with a ferromagnetic shield. The results obtained agree with the practical model. It is pointed out that the end-ear and the distribution of the field parameter B0(z) have important effects on the deflection aberrations. An example is given that compares the electron optical properties of the deflection coils with cosine-distribution and finite length with that of the deflection coils with distributed winding. -
E. F. Ritz, Advance in Electronics and Electron Physics, Academic Press, Vol. 49, 1979, p. 297.[2]E. Munro and H. C. Chu, Optik, 60(1982), 371.[3]西門紀(jì)業(yè),電子和離子光學(xué)原理及象差導(dǎo)論,科學(xué)出版社,1983,第92-103頁.[4]丁守謙,物理學(xué)報(bào),30(1981), 459.[5]馬希文,正交設(shè)計(jì)的數(shù)學(xué)理論,人民教育出版社,1981,第1-4章.[6]謝志行,黃達(dá)診,沈慶垓.電子科學(xué)學(xué)刊,9(1987),17.[7]楊子胥,正交表的構(gòu)造,山東人民出版社,1978,第2-4章.[8]W. O. Adams, Proc. of the SID, 24(1983), 363. -
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