Products

10 K Closed Cycle Refrigerators from Janis

Application Specific Models - Ultra High Vacuum (UHV)

Overview

Click button below to enlarge view of CCS-UHV/204 non-bakeable closed cycle refrigerator system with conflat flange and UHV-compatible thermometry and wiring.  Janis Research and Sumitomo (SHI), cryocoolers, Ultra High Vacuum

Janis Research has a wide range of standard and custom designs available for Ultra High Vacuum (UHV) applications.  This page shows our 10 K closed cycle refrigerators designed for UHV.

  • Non-bakeable closed cycle refrigerator system with conflat flange and UHV-compatible thermometry and wiring (shown).
  • Closed cycle refrigerator with bakeable interface.

Enlarge

Non-bakeable closed cycle refrigerator system with conflat flange and UHV-compatible thermometry and wiring

Closed cycle refrigerator systems may be equipped with a conflat flange and UHV-compatible thermometry and wiring for installation on a customer chamber. The most common configuration is shown in the drawing to the right.

Click button below to enlarge view of mechanical drawing of CCS-200/202 UHV closed cycle refrigerator from Janis and Sumitomo (SHI)Enlarge

Closed Cycle System with Conflat (non-bakeable) Mechanical Drawing

Click button below to enlarge view of CCS-UHV/204 ultra high vacuum 10 K closed cycle refrigerator from Janis Research and SHIEnlarge

CCS-UHV/204N with Manipulator Stages

Click button below to enlarge view of close-up of CCS-UHV-204N conflat flange.  Janis Research, ultra high vacuum, cryocoolersEnlarge

Close Up of CCS-UHV/204N Conflat Flange

This configuration provides a convenient cooling method for high vacuum applications. Note that because the cold head is mounted directly onto the chamber it is not bakeable unless the displacer is removed.

The photograph to the right shows one of these systems installed on a x-y-z manipulator and rotation stage for precise manipulation of the sample location.

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Bakeable Closed Cycle Refrigerator

For those applications where baking is essential to achieve true-UHV conditions, Janis offers a bakeable UHV interface with a removable cold head. This system employs exchange gas to connect the cold head thermally to the sample stage, and is not directly mounted in the UHV chamber. If the cold head is mechanically supported using an independent mount, then the system is also suitable for applications where extremely low levels of vibrations are required.

Click button below to enlarge view of mechanical drawing of bakeable closed cycle refrigerator system from Janis Research and SHIEnlarge

Bakeable Closed Cycle System Mechanical Drawing

The drawing to the right shows the system configured with a nominal 10 K cold head (for 12 K base temperature) and without the independent mechanical support. This UHV interface is also available configured for use with a 4 K cryocooler.

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