At the Photon Factory, we are constructing a new elliptically polarizing undulator(U#19) as a light source for soft X-ray scattering, spectroscopy and STXM experiments. U#19 is an EPU with an APPLE-II-type magnetic arrangement to obtain various polarization states. We designed U#19 to utilize the extended straight section as much as possible. The target photon energy region of U#19 is from 100 eV to 2 keV under various polarization states. The installation of U#19 in the PF ring will be performed during the summer shutdown of the PF ring in 2018. We describe the details of the construction of U#19 in this report.
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2019
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