Summary
This paper describes the development and successful flight operation of a fine-pitch cadmium telluride detector for hard X-ray imaging and spectroscopy aboard the FOXSI-2 solar observation rocket experiment. The detector demonstrated significant improvements over previous silicon detectors, achieving nearly 100% efficiency and 60 μm spatial resolution across the 4–15 keV energy range, with energy resolution of 1 keV FWHM suitable for solar spectroscopy. The December 2014 flight successfully obtained solar images with the new CdTe detector, validating the technology for future solar hard X-ray astronomy missions.
UK applicability
This is a specialised solar X-ray astronomy instrumentation paper with no direct applicability to UK agricultural, soil health, or food systems research. It does not address farming systems, nutrient density, or human health outcomes relevant to Vitagri's research focus.
Key measures
Position resolution (60 μm), detection efficiency (≈100%), energy resolution (1 keV FWHM), low-energy threshold (≈4 keV), sensitive area (7.67 mm × 7.67 mm), field of view (791″ × 791″)
Outcomes reported
The study reports development and successful flight demonstration of a double-sided CdTe strip detector achieving 60 μm position resolution and nearly 100% detection efficiency across 4–15 keV for solar hard X-ray observations aboard the FOXSI-2 rocket experiment.
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