Other
Scientific paper
Aug 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008spie.7011e.106n&link_type=abstract
Space Telescopes and Instrumentation 2008: Ultraviolet to Gamma Ray. Edited by Turner, Martin J. L.; Flanagan, Kathryn A. Pr
Other
1
Scientific paper
We report accelerated aging tests on three Pt/Ne lamps from the same manufacturing run as lamps installed on the Cosmic Origins Spectrograph (COS). Initial radiometrically calibrated spectra were taken for each lamp at the National Institute of Standards and Technology (NIST). One lamp was aged in air at NIST at a current of 10 mA and 50% duty cycle (30 s on, 30 s off) until failure. Calibrated spectra were taken after 206 h, 500 h, 778 h, 783 h and 897 h of operation. Two other lamps were aged by the COS instrument development team in a thermal vacuum chamber, with calibrated spectra taken at NIST after 500 h of operation. In all three lamps, total output dropped by less than 15 % over 500 h. We conclude that the lamps will satisfy the requirements of COS in both lifetime and spectral stability.
Kerber Florian
Nave Gillian
Penton Steven Victor
Rosa Michael R.
Sansonetti Craig J.
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