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High Vacuum Cryogenic Shrouds
and Vacuum Systems
Thermal Base Plates, Thermal Shrouds,
and Space Simulators
TetraTek's
team of experts has over 30 years of experience in the
fabrication of Thermally Conditioned Base Plates, Thermal Shrouds, Space
Simulators, High Vacuum Systems, and matching Thermal Conditioning, Vacuum
Pumping, Fluid and Gas Circulating, and Instrumentation Systems.
Vacuum enclosures are available to operate from 1
x 10-7 Torr to atmospheric pressure and thermal conditioning systems are offered to produce
temperatures from almost absolute zero to 150 C (302 F). Fluid circulating
systems are available to cool and heat Base
Plates or Shrouds from -55 C to +150 C, while gas conditioning systems can cool
and heat from -185 C to 150 C. Cooling systems utilizing, cryo-engines or
liquid helium can reach temperatures as low as -263 C.
TetraTek Vacuum vessels
feature:
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304 or 316 heliarc welded stainless steel
construction.
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Electro-polished or
bead blasted inside surfaces.
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Leak testing to 1 x 10-9 std cc/sec.
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Standard Conflat, KF, ISO, or ASA type
flanges.
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Roughing and/or gauge ports.
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A sand or bead blasted exterior finish.
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Stainless steel or aluminum slide or angle
valves.
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Vacuum roughing pumps, filters and traps.
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Vacuum monitoring and control instrumentation.
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Process control instrumentation
with Touch Screen HMI.
Base Plates, Shrouds and Vacuum Subsystems:
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High vacuum electrical
feed-throughs
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High vacuum fluid feed-throughs.
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Stainless steel and aluminum thermal shrouds.
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Optically dense pumping ports.
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Aluminum and copper base-plates.
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Liquid nitrogen cooling systems.
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Single stage and cascade refrigeration systems.
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Fluid circulating systems.
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Heating systems.
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Gold
plated copper shrouds and base-plates.
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Pressurized gas circulation systems.
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Helium engine cooling
systems.
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Cryopump
assemblies.
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Turbomolecular
vacuum pump assemblies.
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Thermocouple and
process sensor feed-throughs.
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Vacuum automation and motor
drives.
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Product and test handling
fixtures.
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Data acquisition systems.
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Optically dense traps.
Please request a free analysis of your needs.
You may also wish to
review our
Request for TetraTek Application Assistance
on our
Literature Page
. Additional
information on our test fixturing and product testing capabilities is contained
on our
TestKing Page
and additional information
on our Environmental Temperature Chambers, Humidity Chambers, Burn-in Chambers
and Stress Screening Chambers is contained on our
Environmental Page.
Advanced conductive
gold plated cryogenic shrouds
Our unique
TetraTek VacTek
copper shrouds are fabricated from
gold plated oxygen free, rolled, welded and plated copper. Inside one of our
electro-polished stainless steel vacuum vessels using some unique techniques
developed by TetraTek, and a commercial Helium Cryoengine, we are able to
achieve temperatures on the inner shroud surface of approximately 10 Kelvin without the use of a cryogenic
fluid such a
liquid nitrogen.
These systems are sometimes used for research in
low temperature cryogenics, space simulation, as an infrared background for
liquid helium cooled IR instruments, and for specialized materials research.
Copper thermal shrouds
feature:
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Oxygen free copper rolled and welded
construction.
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Vacuum rated paint on the inside surface of the inner shroud.
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24-K pure gold plating for IR heat transfer
resistance.
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Gold plated and stainless steel machined
hardware.
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Optically dense openings or IR shields.
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Black anodized aluminum product support structures.
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Stainless steel hard-points.
A
Typical TetraTek IR Sensor
Housing Features:
1. An electro-polished stainless steel
access door and optical inlet flange.
2. A copper outer shroud door, gold plated both sides .
3. A copper inner shroud door, gold plated and black painted inside.
4. A copper inner shroud, gold plated and black painted inside.
5. A copper outer shroud, gold plated both sides.
6. An electro-polished stainless outer vacuum shell.
7. An ASA flanged, stainless steel optical sensor interface
port.
8. A cryoengine stainless steel Conflat flange attachment port.
9. A cryoengine low temperature connection plate.
10. A cryoengine medium (liquid nitrogen) temperature connection plate.
11. A commercial cryoengine.
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