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29 October 2019 Water Recovery X-Ray Rocket grating spectrometer
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The Water Recovery X-Ray Rocket (WRXR) was a suborbital rocket payload that was launched and recovered in April 2018. The WRXR flew two technologies being developed for future large x-ray missions: x-ray reflection gratings and a hybrid CMOS detector (HCD). The large-format replicated gratings on the WRXR were measured in ground calibrations to have absolute single-order diffraction efficiency of ∼60  %  , ∼50  %  , and ∼35  %   at CVI, OVII, and OVIII emission energies, respectively. The HCD was operated with ∼6  e  −   read noise and ∼88  eV energy resolution at 0.5 keV. The WRXR was also part of a two-payload campaign that successfully demonstrated NASA sounding rocket water recovery technology for science payloads. The primary instrument, a soft x-ray grating spectrometer, targeted diffuse emission from the Vela supernova remnant over a field-of-view >10  deg2. The flight data show that the detector was operational during flight and detected x-ray events from an on-board calibration source, but there was no definitive detection of x-ray events from Vela. Flight results are presented along with a discussion of factors that could have contributed to the null detection.

© 2019 Society of Photo-Optical Instrumentation Engineers (SPIE) 2329-4124/2019/$28.00 © 2019 SPIE
Received: 10 June 2019; Accepted: 8 October 2019; Published: 29 October 2019


CHORUS Article. This article will be made freely available starting 28 October 2020

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