Focal plane of the Arcus Probe X-ray spectrograph

Grant, Catherine E.; Bautz, Marshall W.; Miller, Eric D.; Foster, Richard F.; LaMarr, Beverly; Malonis, Andrew; Prigozhin, Gregory; Schneider, Benjamin; Leitz, Christopher; Falcone, Abraham D.

doi:10.1117/1.jatis.11.1.011007

J. Astron. Telesc. Instrum. Syst.

2024

DOI: 10.1117/1.jatis.11.1.011007

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Focal plane of the Arcus Probe X-ray spectrograph

Catherine E. Grant,

Marshall W. Bautz,

Eric D. Miller

et al.

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Cited by 1 publication

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Curved detectors for future x-ray astrophysics missions

Miller,

Gregory,

Bautz

et al. 2024

Space Telescopes and Instrumentation 2024: Ultraviolet to Gamma Ray

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Future X-ray astrophysics missions will survey large areas of the sky with unparalleled sensitivity, enabled by lightweight, high-resolution optics. These optics inherently produce curved focal surfaces with radii as small as 2 m, requiring a large area detector system that closely conforms to the curved focal surface. We have embarked on a project using a curved charge-coupled device (CCD) detector technology developed at MIT Lincoln Laboratory to provide large-format, curved detectors for such missions, improving performance and simplifying design. We present the current status of this work, which aims to curve back-illuminated, largeformat (5 cm x 4 cm) CCDs to 2.5-m radius and confirm X-ray performance. We detail the design of fixtures and the curving process, and present intial results on curving bare silicon samples and monitor devices and characterizing the surface geometric accuracy. The tests meet our accuracy requirement of <5 µm RMS surface non-conformance for samples of similar thickness to the functional detectors. We finally show X-ray performance measurements of planar CCDs that will serve as a baseline to evaluate the curved detectors. The detectors exhibit low noise, good charge-transfer efficiency, and excellent, uniform spectroscopic performance, including in the important soft X-ray band.

show abstract

Curved detectors for future x-ray astrophysics missions

Miller,

Gregory,

Bautz

et al. 2024

Space Telescopes and Instrumentation 2024: Ultraviolet to Gamma Ray

View full text Add to dashboard Cite

show abstract

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Focal plane of the Arcus Probe X-ray spectrograph

Cited by 1 publication

References 15 publications

Curved detectors for future x-ray astrophysics missions

Curved detectors for future x-ray astrophysics missions

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