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| === Designing and implementing a thermal compensation system for the 40m arm cavity === | = Thermal compensation system for the 40m arm cavity = |
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| To compensate for imperfections that arise due to optical inhomogeneities in the arm cavity mirrors by heating the ETM. | To compensate for imperfections that arise due to optical inhomogeneities in the arm cavity mirrors by designing and implementing a thermal compensation system. |
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| == Things to be looked into == | == Fact-finding == |
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| = What are the ideal cavity parameters? = = Thermal effects due to circulating arm cavity power = = HOM degeneracy = = Increase or decrease RoC of the ETM to correct for inhomogeneities (also by how much) = |
=== What are the ideal cavity parameters? === === Thermal effects due to circulating arm cavity power === === HOM degeneracy === === Increase or decrease RoC of the ETM to correct for inhomogeneities (also by how much) === |
Thermal compensation system for the 40m arm cavity
Goal
To compensate for imperfections that arise due to optical inhomogeneities in the arm cavity mirrors by designing and implementing a thermal compensation system. The lessons learned from this exercise will help with designing/implementing a similar kind of system for the folding mirrors in the power recycling cavity.
Fact-finding
What are the ideal cavity parameters?
Thermal effects due to circulating arm cavity power
HOM degeneracy