Detailed Magnetic Field Measurement on a Hybrid Undulator for the JAERI FEL
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A planar hybrid undulator was constructed for the JAERI FEL. In order to evaluate the performance of the undulator, magnetic field of the undulator was mapped by a detailed field measurement system. The field map obtained experimentally was compared with the map calculated by computer. The undulator field was found to be sinusoidal in the longitudinal direction and almost flat in the transverse direction. The performance of the undulator was found out to be sufficient to lase the JAERI FEL, because the irregularity of the field pattern of the undulator is sufficiently small.
- Journal of Nuclear Science and Technology
Journal of Nuclear Science and Technology 32(8), 715-718, 1995-08-25
Atomic Energy Society of Japan