Laser isotope separation SISL project conceptual design study. Final report.

摘要

This study resulted in a conceptual design for the Combination Wall Telescope. Optical element thermal distortions due to axi-symmetric laser irradiation are restricted to budgeted values by means of passive techniques. Thermally-conductive mirror mounts were designed to reduce temperature gradients to acceptable values. Analysis demonstrated that laser beam spot sizes on optical elements should be one centimeter minimum for a 2.5 watt absorbed load. The optical design activity resulted in a modification of the LLNL concept. The optical form is relatively insensitive to element tilt, despace and decenter tolerances. The design resulted in a relatively narrow 125 microradian field-of-view and is susceptible to beam walk across elements. Thus, telescope body pointing and constant input beam direction are important issues. 84 figs.