The use of EM-CCDs on high resolution soft x-ray spectrometers

Tutt, James H.; Holland, Andrew D.; Murray, Neil J.; Harriss, R. D.; Hall, D.; Soman, Matthew R.; McEntaffer, Randall L.; Endicott, J.

doi:10.1117/12.895981

Cited by 2 publications

(2 citation statements)

References 9 publications

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“…The level of gain applied to the signal will be dictated by the native energy resolution requirement of < 0.2 keV. Tutt et al 2011 show that operating EM-CCDs with significant gain degrades the native energy resolution of the CCD and can interfere with order separation. However, by operating the EM-CCDs with modest gain levels, the OGRE camera should satisfy the requirement of preserving a native energy resolution of < 0.2 keV while benefitting from an increased S/N.…”

Section: Detectormentioning

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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Section: Detectormentioning

confidence: 99%

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

DeRoo¹,

McEntaffer

Schultz

et al. 2013

SPIE Proceedings

Self Cite

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“…Also, as off-plane gratings can disperse X-rays of different energy and order to the same point on the focal plane, the camera requires a good enough energy resolution to enable order separation. 6,7,8 OGRE is designed to detect low energy X-rays in a photon starved environment; therefore, any increase in the signal-to-noise ratio of the incident photons aid in their detection and signal processing, which can be achieved through the increase in the signal in a pixel before it is read out in an EM-CCD. 9 The e2v CCD207-40 10 is the detector that has been chosen for the OGRE focal plane (Figure 1).…”

Section: Ogre Focal Planementioning

confidence: 99%

Technological developments of the OGRE focal plane array

Tutt

McEntaffer

DeRoo³

et al. 2015

SPIE Proceedings

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The Off-plane Grating Rocket Experiment (OGRE) is a high resolution soft X-ray spectrometer sub-orbital rocket payload designed as a technology development platform for three low Technology Readiness Level (TRL) components. The incident photons will be focused using a light-weight, high resolution, single-crystal silicon optic. They are then dispersed conically according to wavelength by an array of off-plane gratings before being detected in a focal plane camera comprised of four Electron Multiplying Charge-Coupled Devices (EM-CCDs). While CCDs have been extensively used in space applications; EM-CCDs are seldom used in this environment and even more rarely for X-ray photon counting applications, making them a potential technology risk for larger scale X-ray observatories. This paper will discuss the reasons behind choosing EM-CCDs for the focal plane detector and the developments that have been recently made in the prototype camera electronics and thermal control system.

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The use of EM-CCDs on high resolution soft x-ray spectrometers

Cited by 2 publications

References 9 publications

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

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

Technological developments of the OGRE focal plane array

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