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.


  • Baseline MTTF*: 90000 hours
  • Compressor dimensions: 90×204 mm
  • Cold finger / approx. dewar bore: 24 mm
  • Mass: 7.0 kg
  • Cooling power @ 80K/23°C (Typical)**: 5100 mW
  • Input power: < 180 W
  • Operating temperature range: -40/71 °C
  • Input voltage: 28 VAC

*: See Whitepaper MTTF01_Z84.
**: See Whitepaper Qe01_Z84.

General information – LPT

The Linear Pulse Tube (LPT) series is based on a thermodynamic working principle that is different from but related to the stirling cycle. In the Pulse Tube cold finger, all mechanical moving parts are eliminated. This technology, combined with the proven design of the ultra reliable flexure bearing compressors as used in our LSF series, has resulted in extremely reliable and miniature cryocoolers with a minimum of vibrations.

Pulse Tube Cryocoolers are specially developed for applications where the object to be cooled is extremely sensitive to vibrations. The absence of moving parts in the pulse tube cold head diminishes the influence of most of the disturbances at the cooler-detector interface. The pulse tube cryocooler produces and sustains a detector operating temperature of 80 K.
The combination of a cold head with no moving parts and the reliable moving magnet flexure bearing compressor guarantees the high reliability of this cooler type.

With its specific characteristics, the LPT cryocoolers are very suitable for applications requiring extremely low levels of induced vibration, acoustic noise, and electromagnetic interference.
Comparable in layout to the “split” configuration Stirling-cycle coolers, the pulse tube cryocooler is a sealed device, with the compressor and cold finger constructed as separate components and connected by a malleable metal transfer line. This configuration enhances the flexibility in system design and helps to isolate the sensitive detector even more from compressor-induced vibration or EMI.

Design Features

  • dual opposed pistons driven by linear motors minimise compressor vibration and acoustic noise
  • compact magnetic circuit optimised for motor efficiency and reduction of electromagnetic interference (EMI).
  • pulse tube cold head with no moving parts suitable to directly mount highly sensitive detectors.
  • moving magnet flexure bearing design eliminates possible causes of performance degradation.
  • no maintenance is required.