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Cesare's Chicago Instrument
 
 
   
    The above picture shows the gas inlet intro the instrument which was originally connected to large mercury filled pistons used to adjust the pressure. The capillaries wrapped in heater tape are connected to the kovar seals . The changover valve located near the top of the picture. The blue motor provides power to adjust the magnet position. The flight tube with source on the left and collector on the right. Large ion pump provided vacuum. Close up of two ion pumps, one for source and one for waste.
   
    Another view of flight tube Electronics housing for collector. There is still a resistor in there.... somewhere. Magnet adjusting motor, with source inputs above
   
    Gear assembly for the magnet adjusting motor Source feed throughs Flight tube from other side
   

Left

Flight tube and magnet

 

Right

 

Changeover valve with external solenoids

   
    Source from Chicago instrument Collector from Chicago Instrument Collector resistors fromn Chicago Instrument
       
    Source from VG 602B, reversed, with change over valve.