Have a look at our page about interfacing, there are several options on how to support our sorption coolers. Depending on which option you select, you may need a radiation shield around the hot pumps. This will also determine where the electrical connector will be best situated - either on the ‘hot’ or the ‘cold’
Regarding the matter of sample mounting and support, we would not generally recommend mounting directly onto the sorption cooler. We normally suggest that the sample be mounted onto a separate ‘cold table’ with thermal contact to the sorption cooler by means of a heat strap. This decouples the mechanical support from the thermal linkage, bringing
We supply our coolers with the temperature sensors and heaters wired to a micro-D connector fixed on the cooler. (We can send the datasheet for the Glenair connectors we use). A GL7 has a 25-way MDM, and a GL4 has a 21-way MDM. The end user will need to either make or buy the cables
Our sorption coolers aren’t designed to have large masses hung from them. If you need to hang small to moderate masses, it is strongly recommend using a separate cold table to mount the object being cooled. Torsion, bending or non-axial loads will break any of our coolers.
Our sorption coolers should be used with the cold head vertically downwards i.e. at the bottom. However, the coolers can be operated up to 45 degrees to the vertical, once they are cold.
At present our sorption coolers aren't UHV compatible, but we are keen to develop ones which are! The main hurdles involve the attachment of thermometers, heaters and wiring to the cooler. Such issues should be solvable with suitable material, assembly and production method choices. Additionally, we are considering ways of dealing with the additional pressure
We do not currently supply ‘turn-key’ cryogenic systems, but we are heading that way. At present we supply only the sub-Kelvin sorption cooler hardware. We can advise on where to buy a cryostat and GM/PT cryocooler to operate our sorption cooler, on thermometry and other instrumentation and on software to run our continuous systems.
The total cooling capacity of a GL7 cooler is approximately 1 Joule per NTP litre of He3 used, at 300mK (although this assumes 100% condensation efficiency). The cooling capacity of a GL4 cooler is around 3.6 Joules per NTP litre, but only around 40% of the total charge is available for cooling during the run
Your cooling power requirements will affect the size of the sorption cooler's He3 and He4 modules. A greater load requires larger modules. Single-shot ‘GL7’ sorption coolers will typically run for 24 hours under 20 to 50 µW loading.