A suborbital payload for soft X-ray spectroscopy of extended sources

Oakley, Phillip H.; McEntaffer, Randall L.; Cash, Webster

doi:10.1007/s10686-011-9222-9

Cited by 9 publications

(5 citation statements)

References 42 publications

(46 reference statements)

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“…5. Schematic of a GEM detector (Oakley, 2011). Collimated X-rays are incident on a 500 nm polyimide window, supported by a stainless steel grid.…”

Section: The Ogress Systemmentioning

confidence: 99%

A Primer for Telemetry Interfacing in Accordance with NASA Standards Using Low Cost FPGAs

McCoy,

Schultz,

Tutt

et al. 2022

Preprint

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Photon counting detector systems on sounding rocket payloads often require interfacing asynchronous outputs with a synchronously clocked telemetry stream. Though this can be handled with an on-board computer, there are several low cost alternatives including custom hardware, microcontrollers, and Field-Programmable Gate Arrays (FPGAs). This paper outlines how a telemetry interface for detectors on a sounding rocket with asynchronous parallel digital output can be implemented using low cost FPGAs and minimal custom hardware. Low power consumption and high speed FPGAs are available as Commercial Off-The-Shelf (COTS) products and can be used to develop the main component of the telemetry interface. Then, only a small amount of additional hardware is required for signal buffering and level translating. This paper also discusses how this system can be tested with a simulated telemetry chain in the small laboratory setting using FPGAs and COTS specialized data acquisition products.

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“…5. Schematic of a GEM detector (Oakley, 2011). Collimated X-rays are incident on a 500 nm polyimide window, supported by a stainless steel grid.…”

Section: The Ogress Systemmentioning

confidence: 99%

A Primer for Telemetry Interfacing in Accordance with NASA Standards Using Low Cost FPGAs

McCoy,

Schultz,

Tutt

et al. 2022

Preprint

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“…Following a rinse in acetone to remove the remaining resist, the substrate surface is left with strips of nitride matching the master groove pattern (4). These nitride strips will serve as a mask for the next steps, in which a chemical wet etch is employed to produce blazed groove facets (5). A potassium hydroxide (KOH) wet etch on a crystal of pure silicon will preferentially etch along the (111) crystallographic plane, removing the substrate material down to this plane.…”

Section: Gratings For the Off-plane Mountmentioning

confidence: 99%

Pushing the boundaries of X-ray grating spectroscopy in a suborbital rocket

DeRoo¹,

McEntaffer

Schultz

et al. 2013

SPIE Proceedings

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The Off-Plane Grating Rocket Experiment (OGRE) will greatly advance the current capabilities of soft X-ray grating spectroscopy and provide an important technological bridge towards future X-ray observatories. The OGRE sounding rocket will fly an innovative X-ray spectrograph operating at resolving powers of R ~ 2000 and effective areas > 100 cm 2 in the 0.2-1.5 keV bandpass. This represents a factor of two improvement in spectral resolution over currently operating instruments. OGRE will observe the astrophysical X-ray calibration source Capella, which has a linedominated spectrum and will showcase the full capabilities of the OGRE spectrograph. We outline the mission design for OGRE and provide detailed overviews of relevant technologies to be integrated into the payload, including slumped glass mirrors, blazed reflection gratings customized for the off-plane mount, and electron-multiplying CCDs (EMCCDs). The OGRE mission will bring these components to a high technology readiness level, paving the way for the use of such a spectrograph on future X-ray observatories or Explorer-class missions.

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“…Last but not least in this section, a significant contribution towards expanding our understanding of the universe with the use of X-ray spectrometry was offered by Oakley et al, 32 who reported the development of a soft X-ray spectrometer with a wavelength resolution of about 100 (Dl/l) to be carried by rocket for suborbital studies of large sources of radiation such as the remnants of nearby supernova. The instrument was durable and could also be operated over long-time periods for orbital missions designed to collect data on soft X-rays from diffused regions.…”

Section: General Instrumentation and Excitation Sourcesmentioning

confidence: 99%