Fabrication of a Monolithic 5-Meter Aluminum Reflector for Millimeter-Wavelength Observations of the Cosmic Microwave Background

Bradford Benson; Bruno Clavel; Eric Chauvin; Jeff Zivick; John Carlstrom; Klaus Schwab; Lutz Stenvers; Mike Niemack; Nick Emerson; Patricio Gallardo

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Fabrication of a Monolithic 5-Meter Aluminum Reflector for Millimeter-Wavelength Observations of the Cosmic Microwave Background

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arxiv 2304.01469 v1 pith:74WVZDOQ submitted 2023-04-04 astro-ph.IM

Fabrication of a Monolithic 5-Meter Aluminum Reflector for Millimeter-Wavelength Observations of the Cosmic Microwave Background

Tyler Natoli , Bradford Benson , John Carlstrom , Eric Chauvin , Bruno Clavel , Nick Emerson , Patricio Gallardo , Mike Niemack

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Steve Padin Klaus Schwab Lutz Stenvers Jeff Zivick

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keywords reflectoraluminumbackgroundcosmicfabricationmetermicrowavemillimeter-wavelength

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We have demonstrated the fabrication of a monolithic, 5-meter diameter, aluminum reflector with 17.4 $\mu$m RMS surface error. The reflector was designed to avoid the problem of pickup due to scattering from panel gaps in a large, millimeter-wavelength telescope that will be used for measurements on the cosmic microwave background.

Fabrication of a Monolithic 5-Meter Aluminum Reflector for Millimeter-Wavelength Observations of the Cosmic Microwave Background

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