9 August 2016 Ultra-stable temperature and pressure control for the Habitable-zone Planet Finder spectrograph
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Abstract
We present recent long-term stability test results of the cryogenic Environmental Control System (ECS) for the Habitable zone Planet Finder (HPF), a near infrared ultra-stable spectrograph operating at 180 Kelvin. Exquisite temperature and pressure stability is required for high precision radial velocity (< 1m=s) instruments, as temperature and pressure variations can easily induce instrumental drifts of several tens-to-hundreds of meters per second. Here we present the results from long-term stability tests performed at the 180K operating temperature of HPF, demonstrating that the HPF ECS is stable at the 0:6mK level over 15-days, and <10-7 Torr over months.
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Gudmundur K. Stefánsson, Frederick R. Hearty, Paul M. Robertson, Eric I. Levi, Suvrath Mahadevan, Tyler B. Anderson, Andrew J. Monson, Chad F. Bender, Samuel P. Halverson, Yiting Li, Lawrence W. Ramsey, Arpita Roy, Christian Schwab, Ryan C. Terrien, Matthew J. Nelson, Basil Blank, "Ultra-stable temperature and pressure control for the Habitable-zone Planet Finder spectrograph", Proc. SPIE 9908, Ground-based and Airborne Instrumentation for Astronomy VI, 990871 (9 August 2016); doi: 10.1117/12.2233443; https://doi.org/10.1117/12.2233443
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