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The Thales RM series of rotary Stirling coolers is one of the most quiet rotary Stirling designs on the market. These coolers offer excellent efficiency for IDCA applications where size and power need to be limited, such as handheld imagers or vehicle-mounted camera systems, while still maintaining a low noise level and high reliability.

Each RM cooler has a different displacer design, including displacers designed to fit ¼” and 8 mm dewar cores.

RM1

400 mW @ 110 K / IDCA

The RM1 is designed for applications where size and mass need to be limited, and is typically used for “HOT” applications.

RM2

400 mW / ¼” IDCA

The RM2 benefits from a recognised maturity associated to high reliability, that makes it a real success for hand held camera or UAV applications. Designed to fit 1/4″ IDCA dewars, the RM2 can be interchanged with other Thales 1/4″ coolers.

RM3

550 mW / 8 mm IDCA

The RM3 is a high-performance rotary cooler for 8 mm IDCA dewars. As the drive electronics are integrated, no separate controller board is necessary for the RM3.

RM4

730 mW / ¼” IDCA

The RM4 is a rotary cooler designed to withstand severe climatic environments, typically used on armoured vehicles operating in those environments. Designed to fit 1/4″ IDCA dewars, the RM4 can be interchanged with other Thales 1/4″ coolers.

Thales Cryogenics supplies a complete range of cryocoolers. Our product ranges are as follows:

UP Contact seal coolers – Close-contact compressor with a free displacer cold finger
LSF Flexure bearing coolers – Flexure bearing compressor with a free displacer cold finger
LPT Pulse-Tube Coolers – Flexure bearing compressor with a pulse-tube cold finger

UP Contact seal coolers

The UP series is the latest generation of Thales moving magnet close contact coolers. The dual opposed piston design minimizes exported vibrations and provides an excellent combination between low noise & vibration, efficiency, and rugged design to meet demanding environmental specifications.

Both slip-on and IDCA versions are available for a variety of cold finger geometries, including a SADA-II-compatible displacer as well as slip-on versions equipped with a high-efficiency spring loaded thermal interface. Maximum cooling powers from 600 mW up to 2 W at 80 K are available.

UP 7080

1000 mW / 5 mm slip-on

With only 5 mm cold finger diameter, the UP7080 is designed to fit into the smallest of dewars.

UP 7086

600 mW / 5 mm slip-on

The UP series offers a comprehensive and versatile range of Linear Stirling coolers especially designed for cooling detectors in thermal imagers and IR sensors.

UP 7087

1300 mW / 7 mm slip-on

The UP series offers a comprehensive and versatile range of Linear Stirling coolers especially designed for cooling detectors in thermal imagers and IR sensors.

UP 7088

1900 mW / 10 mm slip-on

The UP series offers a comprehensive and versatile range of Linear Stirling coolers especially designed for cooling detectors in thermal imagers and IR sensors.

UP 7097

1200 mW / ¼” IDCA

The UP series offers a comprehensive and versatile range of Linear Stirling coolers especially designed for cooling detectors in thermal imagers and IR sensors.

UP 7098

2000 mW / ½” IDCA

The UP7098 is the most powerful UP cooler currently available, with a 1/2″ displacer designed to fit into a SADA-compatible dewar.

UP 8197

1500 mW @ 150 K / SWaP ¼” IDCA (short)

The UP8197 is the smallest UP cooler currently available, and is equipped with a displacer designed to fit into the “SWaP” short version 1/4″ IDCA dewar bore.

UP 8497

600 mW / ¼” IDCA

The UP8497 is the smallest 80K UP cooler currently available, and is equipped with a displacer designed to fit into a standard Thales 1/4″ IDCA dewar bore.

LPT Pulse-Tube Coolers

For applications where life time and vibrations are key requirements, the LPT series is the preferred choice. These coolers combine a flexure bearing moving magnet compressor (as in the LSF series) with a pulse-tube cold finger. This results in a design that is intrinsically balanced and therefore low on vibration, while eliminating the need for a moving mass in the cold finger, thus improving reliability by removing a potential wear mechanism.

Three different LPT cooler types are currently available, with maximum cooling powers ranging from 1.4 W up to 15 W at 80 K tip temperature.

LPT9310

5000 mW / 24 mm slip-on

The LPT9310 combines the proven reliability and efficiency of the LSF93xx compressor with a coaxial pulse tube with integrated buffer, resulting in a high-performance, high-reliability package suitable for a multitude of applications. It is especially suited for 24/7 sensing applications.

LPT9510

1400 mW / 18 mm slip-on

The LPT9510 combines the proven reliability and power density of the LSF95xx compressor with a coaxial pulse tube with integrated buffer, resulting in a compact, high-performance, high-reliability package suitable for a multitude of applications. It is especially suited for 24/7 sensing applications.

LPT9710

15000 mW / 34 mm slip-on

The LPT9710 is the most powerful LPT cooler. It combines a high-efficiency flexure bearing compressor with a coaxial pulse tube cold finger, resulting in a cryocooler capable of providing up to 15 W of cooling at 80 K. The high power and efficiency make it suitable for 24/7 applications such as LN2 recondensing.

LSF Flexure bearing coolers

The LSF series combines the long lifetime and high reliability of a flexure bearing dual opposed piston compressor, with the efficiency and proven performance of a contact seal free displacer Stirling cold finger. The compressor motors are of a moving-magnet design, further improving reliability by eliminating the need for flying leads in the Helium working gas. As such, the LSF is the cooler of choice for applications where high performance and high reliability are required.

Both slip-on and IDCA versions are available for a variety of cold finger geometries, including a SADA-II compatible displacer. Maximum cooling powers from 650 mW up to 9 W at 80 K tip temperature are available.