VIBRATIONALLY ISOLATED CRYOGENIC SHIELD FOR LOCAL HIGH-QUALITY VACUUM

• Main Author: AMINI, Jason Madjdi
• Format: Patent
• Language: English
• Published: 16.05.2024
• Subjects: BLASTING; CALCULATING; COLD ROOMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS; COMPUTING; COOLING OR FREEZING APPARATUS NOT COVERED BY ANY OTHERSUBCLASS; COUNTING; HEAT PUMP SYSTEMS; HEATING; ICE-BOXES; LIGHTING; LIQUEFACTION SOLIDIFICATION OF GASES; MANUFACTURE OR STORAGE OF ICE; MECHANICAL ENGINEERING; PHYSICS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; REFRIGERATION OR COOLING; REFRIGERATORS; WEAPONS

The disclosure describes various aspects of a vibrationally isolated cryogenic shield for local high-quality vacuum. More specifically, the disclosure describes a cryogenic vacuum system replicated in a small volume in a mostly room temperature ultra-high vacuum (UHV) system by capping the volume with a suspended cryogenic cold finger coated with a high surface area sorption material to produce a localized extreme high vacuum (XHV) or near-XHV region. The system is designed to ensure that all paths from outgassing materials to the control volume, including multiple bounce paths off other warm surfaces, require at least one bounce off of the high surface area sorption material on the cold finger. The outgassing materials can therefore be pumped before reaching the control volume. To minimize vibrations, the cold finger is only loosely, mechanically connected to the rest of the chamber, and the isolated along with the cryogenic system via soft vacuum bellows.