Looking at a  power up (comparing when we get to 60W input as reference time to 40s and 120s later), we can see no evidence of point absorbers on ITMY after 120s and 40s. On ITMX after 120s and  40s can see our known point absorbers 66197.

Attached the spherical power trends of, ITMX changes 118μDiopters, ITMY changes 103μDiopter (double pass). It is expected the ITMX curvature  will change more due to the point absorbers.

TCS SIM current status (sitemap > TCS > SIMULATION):

• Daniel/Aidan added channes for annular CO2 (H1:TCS-SIM_ITMY_SUB_DEFOCUS_CO2_AN) in 71467l.
  • The long term CO2 seems to change more than we measure using the HWS spherical power (compared orange spherical power to yellow TCS-SIM trend in attached plot).
• I updated the TCS-SIM SELF absorbsion values to the values measured in in 71400 475ppb for ITMX and 375ppb for ITMY (Prev done in 26014).
  • H1:TCS-SIM_ITMX_SURF_ABSORPTION Old 3e-07, changed to 4.75e-07
  • H1:TCS-SIM_ITMY_SURF_ABSORPTION Old 3.6e-07, changed to 3.75e-07