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Abstracts |
J.W. Heefner, R. Bork (CIT)
The original LIGO suspension control system [1] used analog circuitry to implement the closed loop damping required for local control of each the suspended optics in the LIGO interferometers. As installation and commissioning activities have progressed, it has become apparent that these controls do not provide the performance and flexibility that will be required for operation of the interferometers. Recent developments in ADCs, DACs, increased processor speed and performance, and the use of reflective memory have made a digital alternative possible. This paper will describe the real-time digital servo control systems that have been designed, developed and implemented for the LIGO suspended optics. In addition, the paper will describe how the suspension controls have been integrated into the overall LIGO control and data acquisition system [2].
[1] J. Heefner, 'Large and Small Optics Suspension Electronics Final Design', Internal LIGO Technical Note T980043-00-C, 1998.
[2] R. Bork, D. Barker, 'An Overview of the LIGO Control and Data Acquisition Systems', these proceedings.
{*} Work supported by the National Science Foundation
eCONF
C011127
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SUMMARY
ICALEPCS 2001
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