NMR Cables & Coils

to be written.

Temperature Sensors

We utilize two types of the temperature sensors;

• Vishay RCWP, 1K Ohm Chip Resistor
  • Datasheet: http://www.vishay.com/docs/31011/rcwp.pdf
  • Two wires (VI+ & VI-) per sensor
    https://shop.lakeshore.com/default/temperature-products/cryogenic-accessories/cryogenic-wire/quad-twist/quad-twist-wire-32-awg-7-6-m-25-ft-wqt-32-25.html
• Cernox sensor
  
  • Spec sheet: lstc_cernox_l.pdf
  • Model(s) that we have: CX-1030-SD
  • Four wires (V+, I+, V- & I-) per sensor
  • https://twist.phys.virginia.edu/work/Drell-Yan/Manuals/CernoxInstallation.pdf

We plan to arrange a set of sensors per insert as follows;

• Top cup:       Chip, Chip, Chip
• Center cup:  None
• Bottom cup: Chip, Chip, Chip
• Nose:            Cernox

Readout

• These seven sensors are read out by one of LakeShore 218 through

  • One Fischer connector (27 pins) at the insert side and

  • Two D25 connectors at the LakeShore 218 side.

• The readout cable is of 20 conductors at min (2 wires * 6 sensors + 4 wires * 2 sensor).
• A 26-conductor cable is in place, which goes through the east penetration.
  

  • The D25 and Fischer connectors are configured for "2 wires * 6 sensors (resistors) + 4 wires * 2 sensors (cernox)".  Thus they have to be re-configured.

  • The new pin assignment is given below.

• A 26-conductor cable will be placed for spare.

Spare parts Information

Information relevant to spare parts are mentioned below: