System Specifications:

    LN2 dewar for IR detector with PGA ZIF socket.
    Dewar is both a side looker and a down looker
      The side looking can occur along one axis in order to keep the LN2 in the reservoir.
      The system can be used in both orientations,
      changing from one to another can be accomplished reliably and quickly.
    Variable Temperature Range of 69.5K to 400K, Indirect sample cooling by cryogen
    Non-magnetic materials will be used through-out the design
    Main Dewar, 1-2 liter cryogen capacity,
      approximate. dimensions 4 in. OD tail , 8 in. OD main body x about 20 in. long
    Main Dewar will hold sample at below 80K for more than 3 hours in horizontal or vertical position
    Vacuum port valve with KF flange, NW-10
    Cryogen fill/vent port KF flange, NW-25
    Flanges for electrical feed-throughs, supplied with mate, Qty 2
      1 with 15 pin sub-min D for temperature sensor and heater connections
      1 with 25 pin sub-min D for connection to grid array socket- others types optional
    Tail Section with window, 1 inch dia. clear, mounted in end of tail section
    Windows are to ZnSe or KRS-5 and transparent+/-5% to wavelengths of 10-20 microns
    Windows are to be sealable with o-ring or indium seals
    Windows are to tilted off axis by about 6 (+/-2) degrees
    Copper, Field Baffle and cold shield
    Sample Mounting block with heater and temperature sensor to match standard temperature controllers
    Sample Space can be pumped to a vacuum of 10-7 torr
    All joints and seals to be helium leak tested to 1x10-8 Std. c.c./sec
    Other items included:
      25/50 watt Heater
      all wires and connectors to the sample socket
      all wires and connections to the temperature controller
      25 Phosphor Bronze wire connections to the sample socket
    Basic manual for Assembly and use of cryostat
    A drawing will be sent to you for your approval before manufacturing begins.