R&D (FilterCavity)
MarcEisenmann - 23:32, Saturday 20 March 2021 (2413)
AA phase tuning and new driving matrix

Marc, Yuhang

Following the End mirror OpLev check (entry 2412) and the measurement with the sensing matrix of entry 2411 we decided to use a 4x4 matrix to try to remove the coupling of unwanted degrees of freedom on the reconstructed signals from the 2 QPDs.

 

  1. We aligned the FC to another position : no phase changes
  2. We tried to put the optical bench to the ground (before putting the electronics inside of a clean room the optical table was connected to the nim racks ground) : no changes