Design and fabrication of multigrid X-ray collimators

Details Design and fabrication of multigrid X-ray collimators Design and fabrication of multigrid X-ray collimators

Aug 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976ssi.....2..159a&link_type=abstract

(Science Research Council, Symposium on the Techniques of Solar and Cosmic X-Ray Spectroscopy, Dorking, Surrey, England, May 22,

Astronomy and Astrophysics

Astronomy

4

Collimators, Design Analysis, Fabrication, X Ray Astronomy, X Ray Spectroscopy, Angular Resolution, Bragg Angle, Grids, Solar Instruments, Transmission Efficiency

Scientific paper

The paper considers the design and fabrication of multigrid collimators for use in X-ray astronomy. The most important collimator performance criteria are minimum off-band transmission or leakage, and maximum on-band transmission. Lockheed experience with multigrid collimator is summarized: (1) an Oda type with one-dimensional collimation of 1.7 arc minute FWHM and using only the central transmission band, (2) an Oda type with 2 arc minute one-dimensional collimation using up to 27 transmission bands, each separated by 42 arc min. and (3) a modified Parkinson type with two-dimensional collimation of 40 arc sec. Attention is given to grid materials, precision, plating, hole quality, and results of acceptance testing.

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