Title :
The elliptical multipole wiggler project
Author :
Gluskin, E. ; Frachon, D. ; Ivanov, P.M. ; Maines, J. ; Medvedko, E.A. ; Trakhtenberg, E. ; Turner, L.R. ; Vasserman, I. ; Erg, G.I. ; Evtushenko, Yu.A. ; Gavrilov, N.G. ; Kulipanov, G.N. ; Medvedko, A.S. ; Petrov, S.P. ; Popik, V.M. ; Vinokurov, N.A. ; F
Author_Institution :
APS Div., Argonne Nat. Lab., IL, USA
Abstract :
The elliptical multipole wiggler (EMW) has been designed, constructed, and installed in the X13 straight section of the NSLS X-ray Ring. The EMW generates circularly polarized photons in the energy range of 0.1-10 keV with AC modulation of polarization helicity. The vertical magnetic field of 0.8 T is produced by a hybrid permanent magnet structure with a period of 16 cm. The horizontal magnetic field of 0.22 T is generated by an electromagnet, the core of which is fabricated from laminated iron to operate with a switching frequency up to 100 Hz. There are dynamic compensation trim magnets at the wiggler ends to control the first and second field integrals with very high accuracy throughout the AC cycle. The residual closed orbit motion due to the electromagnet AC operation is discussed
Keywords :
X-ray production; electromagnets; permanent magnets; wigglers; 0.1 to 10 keV; 0.22 T; 0.8 T; 100 Hz; 16 cm; AC modulation; NSLS X-ray Ring; X13 straight section; circularly polarized photons; dynamic compensation trim magnets; electromagnet; electromagnet AC operation; elliptical multipole wiggler project; horizontal magnetic field; hybrid permanent magnet structur; polarization helicity; residual closed orbit motion; vertical magnetic field; AC generators; Electromagnetic wave polarization; Electromagnets; Iron; Magnetic cores; Magnetic fields; Optical modulation; Permanent magnets; Switching frequency; Undulators;
Conference_Titel :
Particle Accelerator Conference, 1995., Proceedings of the 1995
Conference_Location :
Dallas, TX
Print_ISBN :
0-7803-2934-1
DOI :
10.1109/PAC.1995.505244
