环型线电流线极化wiggler

提出一种新型产生线极化摇摆磁场的wiggler,即环型线电流线极化wiggler.它是由许多圆环及连接导线固定在w屯gler骨架上而组成.通过求解拉普拉斯方程,导出了此w电eler磁场分布的理论解.理论解表明,此wiggler产生的线极化磁场不仅在z轴附近空间基模占空比大,而且在垂直于线极化磁场方向能形成具有聚束能力的六极子磁场.此装置的另一特点是容易加工成短周期(5—10mm)wiggler,并且非常容易实现变磁场、变周期和同时变磁场变周期的线极化wiggler.

PULSE-CURRENT LINEARLY POLARIZED WIGGLER WITH LOOPED WIRE

In this paper, a new type of linearly polarized wiggler, its the magnetic field amplitude and peri-od of which can be varied conveniently, has been investigated in detail. The wiggler consists of many loops which separately arrange on the wiggler framework. Varying the radius and period, we can ob-tain the field profile as was expected. The theory about the magnetic field profile in the wiggler has been derived and results of computer simulation show that it can produce any magnetic field profile that we desire by following methods:a)variation of loop radius only;b)variation of the wiggler period only;c) variation of the both.