cheryl.vorvick@LIGO.ORG - posted 01:40, Friday 04 October 2019 - last comment - 02:47, Friday 04 October 2019(52298)
HAM3 images from the WEST door
Images from HAM3, West door: H1 locked in NLN
- IR light exiting the North viewport (sticky on LEXAN, IR camera, false color image) taken by Adrian Helmling-Cornell
- note the second beam, a strong IR beam at the edg of the viewport at about 4 oclock
- IR light exiting the North viewport (steep angle, sticky on LEXAN, IR camera, color enhanced image) taken by Cheryl Vorvick
- IR light on HAM3 SLED, and on HAM3 inner chamber wall, North viewport
- IR light on beam dumps behind MC2, image as taken (dark)
- same as image as #4, lightened
- IR light on 90/10 splitter behind MC2. Center Viewport, showing light on the optic mount
- same image as #6, lightened
- IR light, MC2 side view, MC2 baffle, PR2 baffle aperture showing a beam on the right, and also through the aperture, the far vertical edge of the side plate is illuminated by IR light
- The MC2 cage has a beam on the 45deg lower left angle brace, and the upper right angle brace (more faint, but it is present).
- The MC3 baffle frame has a beam on both vertical sides facing MC2 , the beam on the near side to the viewport is larger and a stronger beam. The beam on the far side from the viewport is smaller.
- IR light, Center Viewport, from left to right, MC2 trans QPD and beam dumps, MC2, PR2 baffle aperture, MC2 baffle
- same as #9, lightened
- The beams on the 90/10 splitter are consistant in multiple views, the amount of reflection changes, but the beams are consistantly on the mouunt.
- The beams on/around the beam dumps and QPD and their posts is consistant in multple views.
Images attached to this report
Comments related to this report
HAM3 West door H1 not locked, ISC_LOCK in Locking Arms Green, X arm locked in green, Y arm locked and unlocked in green, IMC locked, IM4 moved to it's in-lock NLN position.
| IM4, H1 unlocked | IM4, H1 locked NLN | diff, urad | |
| H1:SUS-IM4_M1_DAMP_P_IN1_DQ | -2880.6 | -2943.0 | -62.4 |
| H1:SUS-IM4_M1_DAMP_Y_IN1_DQ | -63.7 | -75.0 | -11.3 |
Images:
- green beam coming out of the North viewport, above the stickies, the beam can be seen in-chamber, back of MC2, North viewport
- HAM3 SLED with green beam on posts, also green beam on far side of the chamber, behind PR2, but not on the 3" optic, North Viewport
- back of MC2 from North viewport showing a very unfocused green beam on the viewport/LEXAN, the green beam coming through the beam dumps behind MC2, also a green beam on the MC2 45 deg cross brace, where IR beam was before
- Center viewport, looking at 90/10 splitter, shows green beam on beam dump posts, and on 3" optic behind PR2, and beam on MC2 optic, far right of image, image as taken
- same image as #4, lightened
- same view as #4, #5, different focus, shows green beams more clearly, lightened
- side view of MC2 and PR2 baffle aperture, shows green beam on MC2 optic, and on PR2 baffle there are two beams, one on the baffle and one clipping the aperture, far left the green beam is on the 90/10 splitter post, as taken
- same as #7, lightened
- side view of MC2 and PR2 baffle aperture, shows MC2 baffle, and green beam close to the location where IR beam was before
By moving IM4 to it's NLN position, with X arm locked in green, the green beam takes the path that the IR beam takes on it's way from the PR2 baffle to the West door North viewport.
Images attached to this comment
