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Entry  Mon Jul 18 14:20:09 2022, Koji, General, General, OMC #002 Plan Portal 
    Reply  Tue Jul 19 03:17:56 2022, Koji, General, General, OMC #002 Power Budget before mirror cleaning 
       Reply  Thu Jul 21 02:55:06 2022, Koji, General, General, OMC #002 Power Budget after mirror cleaning 
    Reply  Thu Jul 21 14:35:35 2022, Koji, General, General, Bond reinforcement blocks for the invar brackets IMG_1095.JPGIMG_1091.JPG
    Reply  Thu Jul 21 14:55:48 2022, Koji, General, General, Optics bonding for the backscatter measurement IMG_1098.JPG
    Reply  Thu Jul 21 17:47:00 2022, Koji, General, General, The profile of the beam incident on the fiber input coupler fiber_beam_profile.pdf
    Reply  Fri Jul 22 00:31:17 2022, Koji, General, General, OMC #002 backscatter measurement OMC_backscatter.pdf
    Reply  Fri Jul 22 17:47:38 2022, Koji, General, General, C&B request for the reinforcement blocks PXL_20220722_222013127.jpg
    Reply  Tue Jul 26 00:12:58 2022, Koji, General, General, High QE PD: QE measurements IMG_1118.JPG
       Reply  Wed Jul 27 10:34:09 2022, Koji, General, General, High QE PD: QE measurements 2 IMG_1119.JPGIMG_1120.JPG
    Reply  Wed Jul 27 10:09:51 2022, Koji, General, General, 4+4 wire clamp in hand PXL_20220727_072154009.jpg
    Reply  Wed Jul 27 10:34:30 2022, Koji, General, General, OMC #002 Protective FirstContact Paint IMG_1125.JPG
    Reply  Wed Jul 27 23:52:18 2022, Koji, General, General, OMC #002 Cable bracket replacement (1) IMG_1126.JPGIMG_1135.JPGIMG_1127.JPGIMG_1129.JPGIMG_1130.JPG
    Reply  Thu Jul 28 00:28:15 2022, Koji, General, General, OMC #002 Cable bracket replacement (2)  IMG_1132.JPGIMG_1133.JPGIMG_1136.JPG
    Reply  Thu Jul 28 00:46:47 2022, Koji, General, General, Subject: OMC #002 Cable bracket replacement (3) IMG_1137.JPGIMG_1148.JPGIMG_1138.JPG
    Reply  Wed Aug 10 18:42:27 2022, Koji, General, General, OMC #002 Cable bracket replacement (4) PXL_20220809_235457354.jpgPXL_20220811_011910569.jpgPXL_20220811_013746139.jpg
       Reply  Thu Aug 11 15:24:57 2022, Koji, General, General, OMC #002 Cable bracket replacement (5) 
    Reply  Mon Aug 15 21:31:56 2022, Koji, General, General, OMC #002 Cable bracket replacement (6)  IMG_1155.JPGIMG_1149.JPGIMG_1150.JPG
    Reply  Mon Aug 15 22:06:18 2022, Koji, General, General, OMC #002 new cable tie installed IMG_1929.JPGIMG_1930.JPG
    Reply  Mon Aug 15 22:43:35 2022, Koji, General, General, OMC #002 Delamination repair Part1 (1) IMG_1926.JPGPXL_20220816_011346581.jpg
       Reply  Mon Aug 15 22:49:03 2022, Koji, General, General, OMC #002 Delamination repair Part1 (2) 7x
          Reply  Wed Aug 24 02:51:23 2022, Koji, General, General, OMC #002 Delamination repair Part1 (3) 8x
    Reply  Wed Aug 24 02:53:46 2022, Koji, General, General, OMC #002 Delamination repair Part2 (1) IMG_1168.JPGIMG_1169.JPGIMG_1170.JPGIMG_1171.JPGIMG_1175.JPG
       Reply  Wed Aug 24 03:20:59 2022, Koji, General, General, OMC #002 Delamination repair Part2 (2) 11x
          Reply  Wed Aug 24 03:26:43 2022, Koji, General, General, OMC #002 Delamination repair Part2 (3) 8x
    Reply  Wed Aug 24 02:57:43 2022, Koji, General, General, EP30-2 bonding setup IMG_1178.JPGIMG_1179.JPGIMG_1180.JPG
    Reply  Wed Aug 24 11:29:47 2022, Koji, General, General, OMC #002 ready for shipment IMG_1207.JPGPXL_20220825_004259850.jpgPXL_20220825_004307204.jpgPXL_20220825_005423342.jpgPXL_20220825_005549985.jpg
    Reply  Thu Aug 25 14:22:08 2022, Koji, General, General, LLO OMC #001 Ballast Mass investigation DSCN0917.JPGDSCN0922.JPGP6108705.JPGP6108707.JPGP6108706.JPG
       Reply  Thu Aug 25 20:05:00 2022, Koji, General, General, LLO OMC #001 Ballast Mass investigation balance_mass_config_LLO.pdf
    Reply  Fri Aug 26 22:29:02 2022, Koji, General, General, Tool Shipping Prep PXL_20220831_025623318.jpgPXL_20220831_024518032.jpgPXL_20220831_030234581.jpg
Message ID: 436     Entry time: Mon Aug 15 21:31:56 2022     In reply to: 415
Author: Koji 
Type: General 
Category: General 
Subject: OMC #002 Cable bracket replacement (6)  

The cable bracket was successfully replaced.

  • Looking from the QPD side (North side in Attachment 1), the connectors for the DCPDs and PZT are sticking out, and the ones for QPDs are sticking to the other side. So only two rectangular holes (for QPDs) are facing north.
    • Top left is DCPDT
    • Top right is DCPDR
    • Bottom center is PZT
    • Bottom left is QPD (far/long)
    • Bottom right is QPD (near/short)
       
  • First, the cable pegs for the short sides are fastened with the original screws (Vented BHCS 1/4-20).
  • Then, the cables are started to be inserted from the bottom so that the nuts can be rotated with the spanner. The spanner helped a bit but the nut only has two positions to hook the spanner and the clearance is not sufficient to insert the spanner when one of the hook positions is facing the bottom. The enlarged hole (29/64") perfectly worked . The flange of the connector can be held with a rectangular hole, so a bit bigger hole than the connector size was not an issue. Finally, all the cables were attached to the bracket.
  • The bracket has not yet been fixed on the OMC breadboard yet. This was done with the four screws from the top. Along with the assembly document E1300201, the fastening torque was limited to 2 in-lb using a digital torque wrench.
  • Attachment 2 shows the view from the "North" side. Attachment 3 shows the view from the "South" side. The cables were not yet tied on the cable pegs on the long side of the bracket.
Attachment 1: IMG_1155.JPG  4.002 MB  Uploaded Mon Aug 15 22:35:06 2022  | Hide | Hide all
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Attachment 2: IMG_1149.JPG  4.640 MB  Uploaded Mon Aug 15 22:44:38 2022  | Hide | Hide all
IMG_1149.JPG
Attachment 3: IMG_1150.JPG  4.488 MB  Uploaded Mon Aug 15 22:44:48 2022  | Hide | Hide all
IMG_1150.JPG
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