The formulations for the calculation of focussing parameters of the three iron bar-magnetic focussing channel are derived in this paper. The calculation results are consistent with the measurement.
推导了三铁块磁聚焦孔道聚焦参数的计算公式，其计算结果与实测作了比较。
This paper studies systematically the magnetic circuit of a dual period focussing system.
本文对双周期聚焦系统的磁路进行了系统的研究。
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