Investigation of substrates and mounting techniques for the High Energy Focusing Telescope (HEFT)
Abstract
The high energy focusing telescope (HEFT) is a balloon-borne system for obtaining arcminute imagery in the 20 - 100 keV energy band. The hard x-ray optics are baselined to use thin epoxy-replicated aluminum foil substrates coated with graded-d multilayers, and we show some results on x-ray performance of prototype foil substrates. We also propose an extremely promising alternative substrate -- thermally formed glass. The advantages of thermally formed glass substrates, their fabrication and preliminary metrology on sample pieces are discussed. If ultimately feasible, the thermally formed glass is a better substrate due to its superior hard x-ray reflectivity and scattering properties in comparison to similarly coated epoxy-replicated aluminum foil. We also discuss some preliminary work on the HEFT mirror mounting concept and the associated angular resolution error budget.
Additional Information
© 1997 Society of Photo-Optical Instrumentation Engineers (SPIE). This work is Columbia Astrophysics Laboratory contribution number 642.Attached Files
Published - 535.pdf
Files
Name | Size | Download all |
---|---|---|
md5:953231f8b0316e45a0bb3ab4fde2110b
|
243.5 kB | Preview Download |
Additional details
- Eprint ID
- 88385
- Resolver ID
- CaltechAUTHORS:20180731-114053130
- Created
-
2018-07-31Created from EPrint's datestamp field
- Updated
-
2021-11-16Created from EPrint's last_modified field
- Caltech groups
- Space Radiation Laboratory
- Series Name
- Proceedings of SPIE
- Series Volume or Issue Number
- 3114