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TT: Fachverband Tiefe Temperaturen
TT 22: Superconductivity – Poster I
TT 22.36: Poster
Montag, 9. März 2026, 18:00–20:00, P1
Optimization of a Single-Stage GM-Type Cooler for Large Thermal Masses — Miriam Reif3, •Jan Ole Sonnenberger1,2, Bernd Schmidt2,3, Jack-André Schmidt2, and André Schirmeisen2,3 — 1Technische Hochschule Mittelhessen, Friedberg, Germany — 2TransMIT GmbH, Giessen, Germany — 3Instiute of Applied Physics, Justus-Liebig University, Giessen, Germany
The demands placed on cooling systems are constantly increasing, which is why they are becoming larger resulting in more overall mass, yet are still expected to cool as quickly as existing systems. Therefore, the systems must be optimized to cool larger masses.[1] A single-stage cooler is ideal for pre-cooling, which is why a single-stage GM-type PTS power cooler was tested as part of the investigation. The performance data of the system was recorded and analyzed under various operating conditions. Based on these measurements, a cooling curve was measured and optimized varying the operating frequency to determine the optimal operating point of the system.
Another another test was then carried out with an attached thermal load in the form of 42 kg of copper to investigate the cooling behavior under increased mass. Once the mass had cooled down without optimization, the cooling time was reduced by around 25% based on the data gained from the previous experiments. These tests provide deeper insight into the performance and optimization of the single-stage GM-type power cooler.
[1] Snodgrass et al., Nat Commun 15, 3386 (2024)
Keywords: Pulse Tube Cryocooler; Additional Thermal Mass; Coolingpower