Actions for CBA main magnet power supply ripple reduction

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CBA main magnet power supply ripple reduction

Author
Bagley, G.
Published
United States : [publisher not identified], 1983
Springfield, Va.: National Technical Information Service, [approximately 1983]
Physical Description
microfiche : negative ; 11 x 15 cm
Additional Creators
Edwards, R. J.

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Summary
The preliminary results of a development program to minimize beam perturbation resulting from ripple current generated by the CBA Main Magnet Power Supply are presented. The assessment of the magnitude and causes of the ripple generated led to a modification of the SCR Gate Driver and the addition of a bandpass amplifier correction loop which gave significant improvement. A description of the changes made and the results obtained are included. A second design approach was developed in which the timing of the SCR gate pulses is directly determined by a VCO. The results reported with this VCO Loop indicate superior performance particularly at frequencies below 60 Hz. A shunt transistor regulator design is proposed to minimize higher SCR switching frequency harmonics.
Report Numbers
DE83010016; BNL-32635; CONF-830311-33
Other Subject(s)
Collection
NTIS collection.
Note
DOE contract number: AC02-76CH00016
OSTI Identifier 6193392
Research organization: Brookhaven National Lab., Upton, NY (USA).
View MARC record | catkey: 47329076