Title :
A novel small period electromagnetic undulator for free electron lasers
Author :
Zhou, W. ; Fang, A.N. ; Tang, W.Z.
Author_Institution :
Zhejiang Univ., China
Abstract :
Numerical calculation shows that optimizing the shape of the current and ferromagnetic area could enhance the field strength of the small-period electromagnetic undulator. Calculations with the nonlinear finite-element method show that this approach could also reduce the space harmonics of the small-period electromagnetic undulator. Based on the numerical data, a model undulator was constructed, and measurements (using a Hall probe) were carried out on it. Experimental results are shown to agree well with numerical calculation
Keywords :
beam handling equipment; electromagnets; free electron lasers; Hall probe; ferromagnetic area; free electron lasers; nonlinear finite-element method; small period electromagnetic undulator; space harmonics; Coils; Design optimization; Electromagnetic fields; Electromagnets; Free electron lasers; Magnetic cores; Magnetic flux; Magnetic flux density; Shape; Undulators;
Conference_Titel :
Particle Accelerator Conference, 1989. Accelerator Science and Technology., Proceedings of the 1989 IEEE
Conference_Location :
Chicago, IL
DOI :
10.1109/PAC.1989.73249
