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Article
Cosmic Microwave Background Polarization Detector with High Efficiency, Broad Bandwidth, and Highly Symmetric Coupling to Transition Edge Sensor Bolometers
We describe a prototype detector system designed for precise measurements of Cosmic Microwave Background polarization. The design combines a quasi-optical polarization modulator, a metal feedhorn, a supercond...
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Chapter
A Continuous Adiabatic Demagnetization Refrigerator for Use with Mechanical Coolers
Sub-kelvin refrigeration is an increasingly vital technology for space missions. Future missions are pushing the development of refrigerators with high cooling power, low operating temperature, and, as always,...
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Chapter
Liquid Level Control Using a Porous Plug in a Two-Phase He II System
This paper presents results of an experiment which decouples the liquid counterflow component from the evaporative component of heat transfer in the two-phase He II system. Two baths, partially filled with He ...
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Chapter
Localized Heat Transfer to Vertical Forced Flow Two-Phase Helium
Localized heat transfer measurements in vertical two-phase helium are reported. The test loop contains two short heat transfer sections made of 5 mm thick oxygen-free high conductivity (OFHC) copper discs. The...