Development of an elliptical multipole wiggler at SPring-8.
An elliptical multipole wiggler (EMPW) based on a new concept has been installed on the SPring-8 storage ring. The EMPW, with a 120 mm period, has a critical energy of 50 keV at a gap of 20 mm. It will provide high-brilliance hard circularly polarized X-rays in the 100-300 keV range to the pilot beamline dedicated to materials science: the Compton scattering beamline. Field measurements, field integrals, the expected fluxes, polarization rates, power and power densities are presented for two operating gaps: 30 mm during commissioning, 20 mm later.
Maréchal
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JAERI-RIKEN SPring-8 Project Team, Kamigori-cho, Ako-gun, Hyogo 678-12, Japan.
Hara
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Tanabe
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Tanaka
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Kitamura
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