A Low Noise Thermometer Readout for Ruthenium Oxide Resistors

Abstract

The thermometer and thermal control system, for the Absolute Radiometer for Cosmology, Astrophysics, and Diffuse Emission (ARCADE) experiment, is described, including the design, testing, and results from the first flight of ARCADE. The noise is equivalent to about 1 Omega or 0.15 mK in a second for the RuO_2 resistive thermometers at 2.7 K. The average power dissipation in each thermometer is 1 nW. The control system can take full advantage of the thermometers to maintain stable temperatures. Systematic effects are still under investigation, but the measured precision and accuracy are sufficient to allow measurement of the cosmic background spectrum. Journal-ref: Review of Scientific Instruments Vol 73 #10 (Oct 2002)

5 pages text 7 figures

References in corpus (2)

• The Cosmic Microwave Background Spectrum from the Full COBE/FIRAS Data Set
• Calibrator Design for the COBE Far Infrared Absolute Spectrophotometer (FIRAS)

Cited by in corpus (8)

• ARCADE 2 Measurement of the Extra-Galactic Sky Temperature at 3-90 GHz
• The Temperature of the CMB at 10 GHz
• The ARCADE 2 Instrument
• The molecular signature of highly conductive metal-molecule-metal junctions
• An Instrument to Measure the Temperature of the Cosmic Microwave Background Radiation at Centimeter Wavelengths
• Design and Calibration of a Cryogenic Blackbody Calibrator at Centimeter Wavelengths
• Sub-Kelvin cooling for two kilopixel bolometer arrays in the PIPER receiver
• Reionization and Structure Formation with ARCADE