LPT9710
15000 mW / 34 mm slip-on

Description

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.

Properties

  • Baseline MTTF*: 90 000 hours
  • Compressor dimensions: 140×300 mm
  • Cold finger: 34 mm
  • Mass: < 16 kg
  • Cooling power @ 80K/23°C (Typical)*: 15 W
  • Input power: < 350 W
  • Operating temperature range: -40/71 °C
  • Input voltage: 55 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.