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Traveling-wave maser, closed cycle refrigerator automationAt the present time all traveling-wave maser and closed-cycle refrigerator system (TWM-CCR) and their power supply and helium compressor assemblies are operated manually. Many man-hours are required of highly trained and experienced operators, resulting in high operator cost. Of greater importance are the problems of unpredictable failure and long downtimes. Since field performance is not monitored, system degradation is detected only when it has progressed to the point of catastrophic failure. Without the aid of performance histories, failure diagnosis is arduous and slow. Rational and functional requirements for the TWM-CCR Automation project are the following: (1) to improve reliability and reduce downtime by providing unattended monitor and control, alarm and fault location, failure prediction and self-corrective action; (2) to reduce operator cost by providing automatic tuning and cooldown procedures; and (3) to improve system operations and development by providing the needed engineering data.
Document ID
Document Type
Reprint (Version printed in journal)
Mcneil, J. A.
(Loyola Marymount Univ. Los Angeles, United States)
Petty, S. M.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
August 10, 2013
Publication Date
October 15, 1981
Publication Information
Publication: The Telecommun. and Data Acquisition Rept.
Subject Category
Lasers And Masers
Accession Number
Funding Number(s)
PROJECT: RTOP 310-30-68-50
Distribution Limits
Work of the US Gov. Public Use Permitted.
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