Sheila, Jennie, Matt, Camilla. WP#12750

Followed what we did in 82881, but did not need to adjust alignment through the EOM. 

Starting with:

• 89mW into EOM, 85mW out of EOM.
• With 5V on ISS AOM controlmon: 22mW in 0th order and 9mW in first order beam.
• With 0V on ISS AOM controlmon: 33mW after AOM

Then with 0V on ISS AOM controlmon, increased to 73mW (85% throughput). Then put 5V on controlmon and started to maximize the 1st order beam. We decided to not completely maximize 1st order as this reduces overall throughput and our current aim is to increase total green throughout, not ISS AOM range.

Ended with:

• With 5V on ISS AOM controlmon: 40mW in 0th order and 13mW in first order beam.

Sheila then adjusted the alignment into the fiber and maximized H1:SQZ-OPO_REFL_DC_POWER from 1.55 to 2.8. 

This allowed us to have an OPO setpoint of 80uW with 20mW going into the fiber, wirth 5 on the controlmon and a spare 20mW that we could give to the fiber.  Note that after ~1hour when we got to NLN, the controlmon had decreased from 5 to 2.5. So the power to the AOM may need to be increased next time we loose lock. Maybe with SQZT0 temperature changes now doors are on and fans are off. 

There was a high pitched noise in SQZT7, close to the -Y side of the table, we couldn’t figure out what it was and maybe will have someone from EE help us with it another week. 

I ran the SCAN_OPOTEMP guardian state (twice as it was far off) once we wer close to NLN.