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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.
The lessons learned from this exercise will help in designing/implementing a similar kind of system for the folding mirrors in the recycling cavities.
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 1. What are the ideal cavity parameters (a reference to compare the different corrections brought about by heating the mirror)?
 2. Sources of inhomogeneity : (i) Surface roughness (ii) Deviation from mirror specs (iii) Thermal effects due to circulating arm cavity power
 3. Increase or decrease RoC of the ETM to correct for inhomogeneities (also by how much)		  1. What are the ideal cavity parameters? (a reference to compare the different corrections brought about by heating the mirror)

 2. Sources of inhomogeneity : (i) Deviation from mirror specs (ii) Thermal effects due to circulating arm cavity power (iii) Surface roughness
 3. Increase or decrease RoC of the ETM to correct for inhomogeneities
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 6. Practical limitations in implementing
6. Practical/hardware limitations in implementing

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 in designing/implementing a similar kind of system for the folding mirrors in the recycling cavities.

Fact-finding

  1. What are the ideal cavity parameters? (a reference to compare the different corrections brought about by heating the mirror)
  2. Sources of inhomogeneity : (i) Deviation from mirror specs (ii) Thermal effects due to circulating arm cavity power (iii) Surface roughness
  3. Increase or decrease RoC of the ETM to correct for inhomogeneities
  4. Desired tuneable range and acheivable range
  5. Best heating profile
  6. Practical/hardware limitations in implementing

Modelling using SIS/COMSOL

Advanced_Techniques/Adaptive_Thermal_Compensation (last edited 2013-11-16 13:50:04 by ManasadevithirugnanasambandamATligoDOTorg)