The Imaging X-Ray Polarimetry Explorer (IXPE) is an X-ray telescope mission currently being built at NASA Marshall Space Flight Center (MSFC). IXPE will measure polarized X-rays in the 2-8 keV range and will reveal new information about astrophysical sources that produce polarized X-rays such as pulsars, AGN, magnetars, and supernovae remnants. Telescope calibration at MSFC's Stray Light Test Facility 100-m beamline will require a bright, highly polarized X-ray source. The design of the IXPE polarized sources for end-to-end telescope calibration will allow for testing at three energies (Rh Lα1 at 2.622 keV, Ti Kα1 at 4.511 keV, and Fe Kα1 at 6.404 keV). We present the design of the polarized sources and results based on laboratory operation.
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