Today early morning we have performed the modification on the Automation in order to support NE/WE mirrors static charge measurements and corresponding Coil Relay boxes hardware modifications.

The functions;

• sb_low_noise_1()
• sb_low_noise_2_p1()
• sb_low_noise_2_p1p2()

contained in META_library.py has been changed so that the  previously shorted relays are now kept closed.

The binary setting changes are listed below:

• sb_low_noise_1():
  • 000000000000000000000000 -> 101000001010101000001010
• sb_low_noise_2_p1():
  • 010100000000000000000101 -> 111100001010101000001111
• sb_low_noise_2_p1p2():
  • 010100000101010100000101 -> 111100001111111100001111

In order to validate those changes before any other further action, a sb_low_noise_2_p1p2 equivalent command has been sent in LOW_NOISE_3_SQZ state with (as foreseen) no side effects and a whole relock cycle has been made without problems and coming back to a comparable sensitivity.