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A double vacuum window mechanism for space-borne applications.

K Zilic1, A Aboobaker2, F Aubin1

  • 1School of Physics and Astronomy, University of Minnesota/Twin Cities, 116 Church St., Minneapolis, Minnesota 55455, USA.

The Review of Scientific Instruments
|May 1, 2017
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Summary

We developed a novel vacuum window mechanism for instruments needing two windows in series, allowing one to be moved and resealed. This innovation enables instruments to operate under vacuum and atmospheric pressures, crucial for space-borne applications like cosmic microwave background radiation measurement.

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Area of Science:

  • Physics
  • Engineering
  • Astrophysics

Background:

  • Space-borne instruments often require adaptable optical access under varying pressure conditions.
  • Existing vacuum window designs may not meet the needs for both low-pressure operation and atmospheric accessibility.

Purpose of the Study:

  • To present a novel vacuum window mechanism.
  • To enable applications needing two vacuum windows in series, with one movable and resealable.
  • To facilitate instruments operating in both vacuum and atmospheric environments.

Main Methods:

  • Design and implementation of a movable and resealable vacuum window.
  • Integration of the mechanism into a balloon-borne payload.
  • Testing under relevant operational conditions.

Main Results:

  • Successful demonstration of the vacuum window mechanism's functionality.
  • The mechanism allows for seamless transition between vacuum and atmospheric pressure conditions.
  • The system proved effective in its application with the E and B experiment.

Conclusions:

  • The presented vacuum window mechanism is a viable solution for instruments requiring dual-pressure operation.
  • This technology enhances the versatility of space-borne and other sensitive instruments.
  • The successful implementation validates the design for demanding scientific applications.