Products

CNDT-UHV Dewars

Model CNDT-UHV He-4 cryostat with 4 K UHV cold plate

Overview

Click button below to enlarge view of special model 10CNDT-UHV cold plate system. Janis Research, cryogenic equipmentSimilar to the standard CNDT dewar, but custom designed for UHV applications. This dewar is built to order, so the dimensions, cryogen volume, conflat flange and cold plate tapped hole pattern may all be specified to meet any individual requirements.

 

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Standard Configuration

The standard CNDT dewar design may be modified for UHV applications. In the system shown in the drawing below, the application required a UHV 4 K cold plate. The dewar mounted to the end-user's chamber via a conflat flange and the cold plate included tapped holes for sample mounting.

Click button below to enlarge view of Model 12CNDT-UHV 4 K CNDT ultra high vacuum dewar from Janis ResearchEnlarge

12CNDT-UHV He-4 cryostat mechanical drawing

The photo on the Overview Tab shows a special Model 10CNDT-UHV cold plate system. The 12" conflat crown assembly bolted to the bottom of the system was provided by the customer. The system is completely UHV compatible and bakeable, although the level sensor has to be removed before bake-out. It is not a variable temperature system; it only operates at 4 K and below if the user pumps on the liquid helium reservoir.

The CNDT-UHV dewars are built to order, so the dimensions, cryogen volume, conflat flange and hole pattern may all be specified to meet any individual requirements. Contact Janis for detailed design discussions.

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