Accession Number:

ADA002479

Title:

The Superconducting-Cavity Stabilized Oscillator and an Experiment to Detect Time Variation of the Fundamental Constants,

Descriptive Note:

Corporate Author:

STANFORD UNIV CALIF HIGH ENERGY PHYSICS LAB

Personal Author(s):

Report Date:

1974-10-01

Pagination or Media Count:

111.0

Abstract:

A precision microwave oscillator system was developed which has a superconducting cavity as its frequency determining element. The frequency stability of the device, called the superconducting-cavity stabilized oscillator SCSO, was studied using both spectrum analysis and period measurement techniques. For times shorter than one-thousand seconds the frequency fluctuations, as measured by the Allan variance, are smaller than for any other high stability frequency source the noise floor of the fractional frequency fluctuations is 10 to the minus 16th power at the present time. The long term performance of an ensemble of SCSO systems has been measured relative to the frequency of a cesium-beam frequency standard.

Subject Categories:

  • Electrical and Electronic Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE