This type of CCR operates internally just like any other, however, instead of mounting your sample directly to the cold head you use a sample stick. The cold head is physically isolated from the sample well, but they are thermally linked with copper bands. This allows for sample changes with the system still running and cold just like an orange cryostat. At low temperatures control is done similarly to an orange cryostat with a heater on the wall of the sample well and helium exchange gas inside the well surrounding the stick. At high temperatures the sample well is evacuated and a stick with a heater and high temperature sensor is used.
Available Instruments
There are five of these systems in use at the NCNR. Two systems are general use (Short Tailed) and designed to fit on the standard goniometer found at most instruments. The others are modified versions designed to fit on specific instruments. HFBS has its own system which can not be used elsewhere. BT4 and DCS's long tailed systems can be used on all standard instruments, but are reserved for their use. Internally the systems are very similar except for some key dimensions in the sample well and the sample sticks they use. Consult the sample mounting page and the drawings below for details.
| System Description | Temperature Range (K) | Manufacturer | Available Instruments | System Drawing (pdf) | PID Zone Table (pdf) * | Notes |
|---|---|---|---|---|---|---|
| TLCCR-05 | 4-800 | Janis | All |  | | |
| TLCCR-06 | 4-800 | Janis | All | | | |
| TLCCR-FANS | 4-700 | Janis | BT-4 FANS | | Long Tail | |
| TLCCR-DCS | 4-800 | Janis | DCS | | Long Tail | |
| TLCCR-HFBS | 4-700 | Janis | HFBS | | | |
| TLCCR-NSE | 4-700 | Janis | NSE | | Non-magnetic |
- Top Loading CCR Manual(pdf will open in new window)
- How to Load a PID Zone Table(pdf will open in new window)