Title :
A planar electromagnet microwiggler for free electron lasers
Author :
Stoner, Richard ; Chen, Shien Chi ; Bekefi, George
Author_Institution :
Dept. of Phys., MIT, Cambridge, MA, USA
fDate :
6/1/1990 12:00:00 AM
Abstract :
The authors have designed and tested an electromagnet planar microwiggler for use in free electron lasers (FELs), constructed of current conductors wound on ferromagnetic cores. A prototype with a period of 1 cm and a gap of 0.5 cm produced a peak field on axis in excess of 4.6 kG, with a linear B/H characteristic to about 3.2 kG. The field of each half-period of the wiggler is independently tunable by adjusting the current delivered to each, thus allowing for precision tuning and/or wiggler tapering. General scaling laws are employed to predict the performance of a geometrically similar design with a period of 5 mm
Keywords :
free electron lasers; laser accessories; laser tuning; 3.2 kG; 4.6 kG; current conductors; ferromagnetic cores; free electron lasers; linear B/H characteristic; planar electromagnet microwiggler; precision tuning; scaling laws; wiggler tapering; Conductors; Electromagnets; Free electron lasers; Laser tuning; Optical design; Prototypes; Testing; Tunable circuits and devices; Undulators; Wounds;
Journal_Title :
Plasma Science, IEEE Transactions on
