Automation, operation, and data analysis in the cryogenic, high accuracy, refraction measuring system (CHARMS)

Bradley J. Frey; Douglas B. Leviton

doi:10.1117/12.619302

18 August 2005 Automation, operation, and data analysis in the cryogenic, high accuracy, refraction measuring system (CHARMS)

Bradley J. Frey, Douglas B. Leviton

Author Affiliations +

Proceedings Volume 5904, Cryogenic Optical Systems and Instruments XI; 59040P (2005) https://doi.org/10.1117/12.619302
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

The Cryogenic High Accuracy Refraction Measuring System (CHARMS) at NASA's Goddard Space Flight Center has been enhanced in a number of ways in the last year to allow the system to accurately collect refracted beam deviation readings automatically over a range of temperatures from 15 K to well beyond room temperature with high sampling density in both wavelength and temperature. The engineering details which make this possible are presented. The methods by which the most accurate angular measurements are made and the corresponding data reduction methods used to reduce thousands of observed angles to a handful of refractive index values are also discussed.

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Bradley J. Frey and Douglas B. Leviton "Automation, operation, and data analysis in the cryogenic, high accuracy, refraction measuring system (CHARMS)", Proc. SPIE 5904, Cryogenic Optical Systems and Instruments XI, 59040P (18 August 2005); https://doi.org/10.1117/12.619302

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