Polarized wiggler for NSLS x-ray ring

We examine the properties of an elliptically polarized wiggler that will generate circularly polarized photons with energy spectrum of 3-12 KeV. The vertical wiggler magnetic field is produced by permanent magnets while the horizontal wiggler field is generated by electric coils capable of AC excitation. The radiation parameters of the wiggler are presented. Numerical values are calculated for radiation from the wiggler. A conceptual design for such a wiggler is discussed. We consider AC excitation of the wiggler to produce the time modulation of the elliptic polarization. The power dissipated in the vacuum chamber due to the eddy current is considered.