Accession Number:

ADA492725

Title:

A Subcompact Q-Enhanced Active Hydrogen Maser

Descriptive Note:

Conference paper

Corporate Author:

HUGHES RESEARCH LABS MALIBU CA

Personal Author(s):

Report Date:

1986-12-01

Pagination or Media Count:

11.0

Abstract:

A hydrogen maser has been fabricated that is considerably smaller than others developed by Hughes Research Laboratories HRL 1,2. The system uses an L-C loading structure to lower the resonant frequency of the microwave cavity, and an electronic cavity stabilization servo to ensure long-term cavity stability. The overall size of the physics unit microwave cavity, vacuum chamber, dissociator, state selector, hydrogen source, four nested magnetic shields, and front-end electronics is 5.6 in. by 5.6 in. by 14.5 in. The entire maser, including all power supplies and receiver electronics, is being packaged in a 6 in. by 16 in. by 17 in. envelope suitable for rack mounting. Preliminary data show a stability of 8 x 10exp -14 for a tau of 100 s, which is very close to the theoretical limit for this design 3, and significantly better than that for other standards of comparable size. Such a maser should prove very attractive for applications in which high stability, small package size, and low weight are critical requirements.

Subject Categories:

  • Test Facilities, Equipment and Methods

Distribution Statement:

APPROVED FOR PUBLIC RELEASE