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Standardized CCD and MCT detector mounting configurations

Standardized CCD and MCT detector mounting configurations. B. C. Bigelow, UM Physics 2/2/05. SiC Focal Plane Concept. Consider SiC for focal plane baseplate SiC superior to Moly in virtually all material properties SiC has 5 times the specific stiffness, and 1/3 the density of Moly

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Standardized CCD and MCT detector mounting configurations

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  1. Standardized CCD and MCT detector mounting configurations B. C. Bigelow, UM Physics 2/2/05

  2. SiC Focal Plane Concept • Consider SiC for focal plane baseplate • SiC superior to Moly in virtually all material properties • SiC has 5 times the specific stiffness, and 1/3 the density of Moly • Standard detector packages with spring preload mountings allow use of current detector package materials • No thermal compensator / flexure mounts required • Space heritage for SiC material, and optically flat mirrors established • Substantial weight savings for focal plane assembly, bipods, etc. Bruce C. Bigelow -- UM Physics

  3. SiC Focal Plane Concept • Consider SiC for focal plane baseplate Bruce C. Bigelow -- UM Physics

  4. Focal Plane Concept • CTE comparison (courtesy of Pat Jelinsky): Bruce C. Bigelow -- UM Physics

  5. SiC Focal Plane Concept Bruce C. Bigelow -- UM Physics

  6. SiC Focal Plane Concept Bruce C. Bigelow -- UM Physics

  7. SiC Focal Plane Concept • Conclusions • SiC is a viable option for focal plane baseplate • Standardized detector packages are compatible with SiC • Substantial weight savings are possible • Lots more to do if SNAP project is interested in SiC: • Add spectrograph, guider detectors, BITE optics, etc. • Add cold shield, “concentrator” electronics, radiator interface, etc. • Detailed design of baseplate • FEA of baseplate Bruce C. Bigelow -- UM Physics

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