Title :
Polarized wiggler for NSLS X-ray ring
Author :
Friedman, A. ; Zhang, X. ; Krinsky, S. ; Blum, E.B. ; Halbach, K.
Author_Institution :
Nat. Synchrotron Light Source, Brookhaven Nat. Lab., Upton, NY, USA
Abstract :
We examine the properties of an elliptically polarized wiggler that will generate circularly polarized photons with an 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
Keywords :
X-ray production; eddy currents; electromagnetic field theory; magnetic fields; vacuum apparatus; wigglers; 3 to 12 keV; NSLS; National Synchrotron Light Source; circular polarization; design; eddy current; electric coils; elliptically polarized wiggler; permanent magnets; power dissipation; vacuum chamber; Electromagnetic wave polarization; Laboratories; Light scattering; Magnetic field measurement; Optical polarization; Particle scattering; Permanent magnets; Soft magnetic materials; Undulators; X-ray scattering;
Conference_Titel :
Particle Accelerator Conference, 1993., Proceedings of the 1993
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-1203-1
DOI :
10.1109/PAC.1993.308547
