LIGO Document T1600096-v1

SR3 heater COMSOL model

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T - Technical notes
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COMSOL model of SR3 heater. In this model, 10W goes into the SR3 heater and we measure the change in the ROC of the front surface of SR3.

SR3 response = 3.8mm/W

- 10W yields approximately 29uD change in the front surface. Starting from a nominal ROC of 36m, this yields a final ROC of 35.9625m, or a dR = 37.5mm

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