Cornell Prime-Cam Receiver Cryostat

That heart is the receiver cryostat built by Red Line Chambers of Salt Lake City, Utah. The chamber is a 1.8-meter-diameter vacuum vessel engineered to house up to seven independent 40-centimeter instrument modules, each carrying its own silicon reimaging optics, filters, and detector arrays. Red Line Chambers fabricated the major machined shells, the front window plate, and the G10 structural supports, along with the internal thermal interfaces that tie the optics tubes to the cold heads. Inside, a BlueFors dilution refrigerator and a bank of Cryomech pulse-tube coolers drive a multi-stage thermal architecture — nested 300 K, 80 K, 40 K, and 4 K stages, with the detector modules stepping further down to 1 K and 100 millikelvin. Building a vessel that holds a rigorous vacuum, manages that steep thermal gradient, and maintains precise optical alignment under cryogenic contraction is a demanding piece of precision fabrication, and it is exactly the kind of one-off, science-grade chamber Red Line Chambers specializes in.

The completed cryostat is a cornerstone of the Prime-Cam program: without a stable, ultra-cold, precisely machined vacuum environment, the telescope's superconducting detectors simply cannot function. By delivering the receiver body and its cryogenic infrastructure, Red Line Chambers contributed a critical piece of hardware to one of the most ambitious ground-based astronomy instruments now coming online — a camera that will help researchers at Cornell and around the world survey the submillimeter universe in unprecedented detail. It is a project that showcases Red Line Chambers' ability to translate exacting scientific specifications into a working, deployable instrument at the frontier of modern cosmology.