Reports until 17:30, Monday 22 May 2017
H1 TCS
thomas.shaffer@LIGO.ORG - posted 17:30, Monday 22 May 2017 (36332)
Post ITMX realignment HWSX search

This morning Jenne brought the the ITMX suspension back to good values, according to the oplev, so that we could try a to search for a HWSX return beam. I followed Aidan's instructions and did the search  just as before:

  1. Check that the SLED is ON and the irises are open.
  2. Swap the fiber for HWSX back into h1hwsmsr and then start the streaming code in a tmux session.
  3. Start two excitations on SR3:
    1. H1:SUS-SR3_M1_TEST_P_EXC, amp=1200, freq=0.01Hz
    2. H1:SUS-SR3_M1_TEST_Y_EXC, amp=1200, freq=0.0085025Hz

I ran the measurement from 22:03-23:30 UTC (+/- a few minutes) before I thought it was easy enough to confirm that there was still nothing showing up, and then handed the ITM back to Jeff to complete his measurements. With more time all of the gaps could have been filled, but this does not show any higher intensity points unlike previous tests (alog36179).

After talking with Aidan, he thinks that ITMX is still not within an acceptable aligned range, and the upper periscope mirror may be misaligned. If there is more time later this week we can try again with the amplitude doubled, increasing the search area, but just waiting for the green beam and his arrival might be best.

Note to myself: I left the HWSX fiber in h1hwsmsr

Images attached to this report