Close cycle refrigerators are really easy to use, as one does not need to deal with cryogens. However, all our present system have one drawback: The sample is mounted in vacuum, which leads to some uncertainity in the temperature, especially at temperatures below 20 K. For that reason, it is necessary to put even single crystals into a sealed sample container containing He gas. Some ideas what gradients can be expected can be taken from a CTI Test Report.

NameDescriptionTemperature Range
CCR2?Sumitomo CCR (FOCUS)4.5 ... 600 K
CCR2HT?Sumitomo CCR (FOCUS) with Hi-T stage30 ... 600 K
CCR3ARS, for use on euler cradle4.5 ... 325 K
CTI2Standard CTI15...325 K
CTI3Standard CTI15...325 K
CTI4CTI with extended T-range30...470 K
CTI5High Power CTI20...325 K
CTI6CTI with extended T-range (FOCUS)30...470 K
DISCDisplex9...325 K
DISEDisplex7...325 K
APDfor use on euler cradle10...450 K