At room temperature (RT), each set terminates in a hermetic 24-pin Fischer connector. At low temperatures the wiring terminates in a 25-pin micro-D connector. The low temperature termination can be used as a break-out post (screwed to the experimental flange with an included gold-plated copper mounting bracket) or as a connector to be plugged directly into a for example a filter or sample holder box. Additional break-outs can be ordered at every temperature stage. In this case the micro-D termination coming from the higher temperature serves as break-out post and the termination of the continuing bundle serves as a connector. The customer can insert for example a filtering element at any later time.
Standard twisted pair wiring
36 AWG phosphor-bronze
RT – 4K: 14|10 Ohm/wire (RT|cold)
4K – MXC: 14|10 Ohm/wire (RT|cold)
RT – MXC: 22|17 Ohm/wire (RT|cold)
35 AWG copper
RT – 4K: 4|<2 Ohm/wire (RT|cold) Note: Includes additional thermal anchoring stage to pulse tube.
RT – 4K: 35 AWG Cu (see above)
4K – MXC: NbTi/CuNi (superconducting) 65|<1 Ohm/wire (RT|cold) Note: Includes connectorized break-out at 4K.
We have together with Attocube developed a low-ohmic wiring for their positioners and scanners. This set is not based on superconducting wires and can be used to operate the Attocube devices also at room temperature (positioner wire resistance < 5 Ohm).