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迴旋管实现永磁包装,迄今尚未见有文献报道。本文提出采用一种适合于迴旋管工作的双均习区径向磁路系统作为永磁聚焦方案,并利用计算机进行了研究,通过设计计算,选用磁能积(BH_(max)为20 MGOe的钐钴磁钢。为了调整磁场,在双均匀区添加了一些小电磁线包,它们改变磁场的范围约为5％。 通过计算表明,建立一个8mm二次谐波迴旋管所需的6500—7000Gs强磁场系统,约需钐钴磁钢40—50kg。这对于研制 8mm二次谐波永磁聚焦迴旋管以及近厘米波段迴旋管是很吸引人的。本文最后还对提高磁路效率、扩大均匀区等问题进行了简单的讨论。
Gyrotron to achieve permanent magnetic packaging, so far there have been no reports. In this paper, we propose a dual-homogeneous learning radial magnetic circuit system that is suitable for the gyro-tube work as the focusing scheme of permanent magnetism. The computer is used to study the design. By using the energy product (samarium with BH_max of 20 MGOe) Cobalt magnet In order to adjust the magnetic field, a small magnet wire package was added to the double uniform zone, which changed the magnetic field range to about 5% .The calculation shows that the 6500-7000Gs intensity required to establish an 8mm second harmonic gyrotron Magnetic system, about 40-50kg samarium cobalt magnet.This is very attractive for the development of 8mm second harmonic permanent magnet focusing gyrotron and nearly centimeter-band gyrotron.At the end of this paper, we also improve the magnetic circuit efficiency and expand the uniform area And other issues for a simple discussion.