Status of the rocket experiment demonstration of a soft x-ray polarimeter (REDSoX)

Herman L. Marshall; Sarah Heine; Alan Garner; Rebecca Masterson; Ralf Heilmann

doi:10.1117/12.2677873

27 September 2023 Status of the rocket experiment demonstration of a soft x-ray polarimeter (REDSoX)

Herman L. Marshall, Sarah Heine, Alan Garner, Rebecca Masterson, Ralf Heilmann

Proceedings Volume 12678, UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XXIII; 1267813 (2023) https://doi.org/10.1117/12.2677873
Event: SPIE Optical Engineering + Applications, 2023, San Diego, California, United States

Abstract

The Rocket Experiment Demonstration of a Soft X-ray Polarimeter (REDSoX) is a NASA-funded sounding rocket instrument that can make the first measurement of the linear X-ray polarization of an extragalactic source in the 0.2-0.4 keV band. We employ multilayer-coated mirrors as Bragg reflectors at the Brewster angle. By matching the dispersion of a dispersive spectrometer using critical angle transmission gratings to three laterally graded multilayer mirrors (LGMLs), we achieve polarization modulation factors over 90%. We will describe new prototyping work as well as extensions of the design for an orbital version. This work is supported in part by NASA grant 80NSSC23K0644.

Conference Presentation

Citation Download Citation

Herman L. Marshall, Sarah Heine, Alan Garner, Rebecca Masterson, and Ralf Heilmann "Status of the rocket experiment demonstration of a soft x-ray polarimeter (REDSoX)", Proc. SPIE 12678, UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XXIII, 1267813 (27 September 2023); https://doi.org/10.1117/12.2677873

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