BNQR Cryostat

Cryo Industries continuous flow coldfinger (CI project #) cooled by liquid helium provided from a liquid helium storage dewar located on the bNQR platform. Used with a standard Cryo Industries transfer line. Samples (4 front and up to 4 back side) mount onto a sample ladder which is inserted via a vacuum load lock down the axis of the cryostat.Ladder position is easily changed when at room temperature. Thermal contraction is used to secure the ladder to the cold finger. Temperature range ~3K - 300K; Two Si diode thermometers are installed (standard curve DT-670) read by a Lakeshore 331 controller. Platinum resistor (PT-100) is installed on the heat shield. Further documentation is in the bNMR wiki (BNQR Thermometry).