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Reports until 07:18, Friday 21 October 2016
H1 ISC
terra.hardwick@LIGO.ORG - posted 07:18, Friday 21 October 2016 - last comment - 10:37, Friday 21 October 2016(30712)
ITMY ring heater turned down

Per Sheila's request, we just reduced ITMY ring heater 1.25 W --> 0.25 top, 1.25 --> 0.25 bottom at 14:16 UTC.

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kiwamu.izumi@LIGO.ORG - 10:37, Friday 21 October 2016 (30717)
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The CO2 settings were also reverted to the values that we used to use before the ring heater tuning started. Here is a summary.

  • Cold state values [CO2X CO2Y] = [0.5, 1.0] Watts => [0.5, 0.3] Watts
  • Hot state values [CO2X, CO2Y] = [0.24, 0] Watts => [0.2, 0] Watts

To implement this change, I have edited the following guardians.

  • ISC_LOCK
  • TCS_ITMY_CO2_PWR

I did not get a chance to check the contrast defect in the simple Michelson configuration yet.

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