Development and production of hard X-ray multilayer optics for HEFT
Abstract
The High Energy Focusing Telescope (HEFT) will observe a wide range of objects including young supernova remnants, active galactic nuclei, and galaxy clusters at energies between 20 and 70 keV. Large collecting areas are achieved by tightly nesting layers of grazing incidence mirrors in a conic approximation Wolter-I design. The segmented mirrors that form these layers are made of thermally formed glass substrates coated with depth-graded multilayer films for enhanced reflectivity. The mirrors are assembled using an over-constraint method that forces the overall shape of the nominally cylindrical substrates to the appropriate conic form. We will present performance data on the HEFT optics and report the current status of the assembly production.
Additional Information
© 2003 Society of Photo-Optical Instrumentation Engineers (SPIE). This technical progress described in this paper could not have been made without the expert and tireless work of our technical staff. In particular, Marcela Stern was essential in defining the slumping techniques. We are very grateful to CASA at the University of Colorado for hosting us as guests at their excellent long-beam UV facility. This work is supported by a NASA grant to Columbia University: NAG5-5260 (Thermally Formed Optics for X-Ray and Gamma-Ray Astronomy), and by NASA grants to the California Institute of Technology with subawards to Columbia: Caltech No. 1019776 (High Energy Focussing Telescope) and Caltech No. 1046806 (Critical Technologies for the Constellation Hard X-Ray Telescope).Attached Files
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Additional details
- Eprint ID
- 84260
- Resolver ID
- CaltechAUTHORS:20180111-131341721
- NASA
- NAG5-5260
- NASA
- 1019776
- NASA
- 1046806
- Created
-
2018-01-11Created from EPrint's datestamp field
- Updated
-
2021-11-15Created from EPrint's last_modified field
- Caltech groups
- Space Radiation Laboratory
- Series Name
- Proceedings of SPIE
- Series Volume or Issue Number
- 4851