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TT: Fachverband Tiefe Temperaturen
TT 89: Cryotechnique: Refrigeration
TT 89.1: Vortrag
Donnerstag, 12. März 2026, 16:45–17:00, HSZ/0103
Twin low frequency stirling type Pulse Tube Cryocoolers driven by a single metal bellows compressor — •Xaver O. Herrmann1,2, Jack-André Schmidt1,2, Bernd Schmidt2, Jens Höhne3, and André Schirmeisen1,2 — 1Instiute of Applied Physics, Justus-Liebig University, Giessen, Germany — 2TransMIT-Center for Adaptive Cryotechnology and Sensors, Giessen, Germany — 3Pressure Wave Systems GmbH, Taufkirchen, Germany
GM-Type Pulse Tube Cryocoolers (PTC) offer cooling power at temperatures down to 2.2 K with 4He as a working fluid[1]. With increasing reliability of PTCs, they have become a dependable and cost-effective option for cooling sensitive sensors[2] to temperatures even below typical LHe bath cryostats.
In contrast to conventional GM cryocoolers, PTC require only one moving part: the rotary valve. For critical applications with "high demand" for reliable and continuous cooling, GM-type PTC offer service intervals in excess of 3 years.
In order to increase the service interval further as well as to reduce losses within the rotary valve, omitting this valve is the most effective option. In this contribution we present our current status of development of a pair of small low frequency Stirling-type PTC, derived from the two stage GM-type PTC SUSY, both driven by one metal bellows compressor.
[1] N. Jiang et al., Cryogenics 44 (2004) 809.
[2] R. Güsten et al., Nature 568 (2019) 357.
Keywords: Pulse Tube Cryocooler; Rotary valve; Coolingpower; Stirling Pulse Tube Cryocooler