Dry Dilution Refrigerator for Experiments on Quantum Effects in the Microwave Regime
A. Marx, J. Hoess, K. Uhlig

TL;DR
This paper presents a newly developed cryogen-free 3He/4He dilution refrigerator designed for experiments on quantum effects in the microwave regime, emphasizing its large space, cooling capabilities, and vibration isolation.
Contribution
The paper introduces a custom-built, cryogen-free dilution refrigerator with enhanced space and cooling features tailored for quantum microwave experiments, developed entirely at WMI.
Findings
Base temperature of 11 mK achieved
Cooling power of 300 μW at 100 mK
Large space for microwave components and cables
Abstract
At the Walther-Mei{\ss}ner-Institut (WMI), a new cryogen-free 3He/4He dilution refrigerator (DR) has been completed; the cryostat will be employed to cool experiments on superconducting quantum circuits for quantum information technology and quantum simulations. All major components have been made at the WMI. The DR offers lots of space at the various stages of the apparatus for microwave components and cables. E. g., the usable space at the mixing chamber has a height of more than 60 cm and a diameter of 30 cm (mixing chamber mounting plate). To cool cables and cold amplifiers, the DR is equipped with a separate 4He-1K-loop which offers a cooling power of up to 100 mW near 1K. The refrigeration power of the still is 18 mW at 0.9 K; the diameter of its mounting plate is 35 cm. The cryostat rests in an aluminum trestle on air springs to attenuate building vibrations. It is precooled by a…
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Taxonomy
TopicsAdvanced Thermodynamic Systems and Engines · Advanced Thermodynamics and Statistical Mechanics · Cold Atom Physics and Bose-Einstein Condensates
