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Component testing for x-ray spectroscopy and polarimetry
Author(s): Alan Garner; Herman L. Marshall; Sarah N. Trowbridge Heine; Ralf K. Heilmann; Jungki Song; Norbert S. Schulz; Beverly J. LaMarr; Mark Egan
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Paper Abstract

We present the performance and recent results of the MIT polarimetry beamline. Originally designed for testing Chandra HETG gratings, the beamline has been adapted to test components for soft x-ray polarimetry applications. Since then, its monochromator capabilities have also been used to test gratings. We present results on the measured absolute efficiencies of the Arcus Phase A gratings using the B-K, O-K, and C-K emission lines. The beamline has also been used to develop tools and techniques to measure the linear polarization of soft X-rays (0.2-0.8 keV), which form the basis for a sounding rocket mission REDSoX (Rocket Experiment Demonstration of a Soft X-ray Polarimeter) and a possible orbital mission. We present our tests to align the REDSoX gratings, as well as our idea to use thin twisted crystals as a possible alternative to laterally-graded multilayer mirrors. Support for this work was provided in part by the NASA grant NNX15AL14G and a grant from the MIT Kavli Institute.

Paper Details

Date Published: 9 September 2019
PDF: 12 pages
Proc. SPIE 11118, UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XXI, 1111811 (9 September 2019); doi: 10.1117/12.2529607
Show Author Affiliations
Alan Garner, Massachusetts Institute of Technology (United States)
Herman L. Marshall, Massachusetts Institute of Technology (United States)
Sarah N. Trowbridge Heine, Massachusetts Institute of Technology (United States)
Ralf K. Heilmann, Massachusetts Institute of Technology (United States)
Jungki Song, Massachusetts Institute of Technology (United States)
Norbert S. Schulz, Massachusetts Institute of Technology (United States)
Beverly J. LaMarr, Massachusetts Institute of Technology (United States)
Mark Egan, Massachusetts Institute of Technology (United States)


Published in SPIE Proceedings Vol. 11118:
UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XXI
Oswald H. Siegmund, Editor(s)

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