Magnetic Shielding and Vacuum Test for Passive Hydrogen Masers

Abstract

Vibration tests on high permeability magnetic shields used in the SAO-NRL Advanced Development Model (ADM) hydrogen maser have been made. Magnetic shielding factors were measured before and after vibration at the Goddard Space Flight Center, magnetic field facility. Preliminary results indicate considerable (<25%) degradation. Test results on the NRL designed vacuum pumping station for the ADM hydrogen maser are also discussed. This system employs sintered zirconium carbon getter pumps, supplied by SAES Getters, to pump hydrogen plus small ion pumps to pump the inert gases. In situ activation tests and pumping characteristics indicated that the system can meet design specifications.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1981
Accession Number
ADA491805

Entities

People

  • A. B. Jacoby
  • D. U. Gubser
  • L. D. Jones
  • S. A. Wolf

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Abstracts
  • Accelerometers
  • Atomic Beam Masers
  • Degradation
  • Elements
  • Frequency
  • Hydrogen
  • Inertial Navigation Systems
  • Information Operations
  • Masers
  • Materials
  • Military Research
  • Shielding
  • Space Flight
  • Time Intervals
  • Vibration

Fields of Study

  • Physics

Readers

  • Aerospace Test and Evaluation
  • Plasma Physics / Magnetohydrodynamics
  • Surface Engineering/Surface Coating Technology.

Technology Areas

  • Space
  • Space - Hall-Effect Thruster