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40m Log |
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Tue Feb 2 17:09:17 2021, yehonathan, Update, BHD, SOS assembly 
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Tue Feb 2 18:24:54 2021, Koji, Update, BHD, SOS assembly
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Thu Feb 4 15:14:55 2021, Yehonathan, Update, BHD, SOS assembly
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Tue Feb 16 13:13:39 2021, Yehonathan, Update, BHD, SOS assembly
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Tue Feb 16 15:29:01 2021, Koji, Update, BHD, SOS assembly
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Tue Feb 16 22:59:36 2021, Yehonathan, Update, BHD, SOS assembly
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Fri Feb 19 12:21:04 2021, Yehonathan, Update, BHD, SOS assembly
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Fri Mar 26 10:25:37 2021, Yehonathan, Update, BHD, SOS assembly
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Tue Apr 6 15:42:57 2021, Yehonathan, Update, BHD, SOS assembly
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Fri Apr 9 20:54:54 2021, Yehonathan, Update, BHD, SOS assembly 
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Mon Apr 12 17:30:11 2021, Yehonathan, Update, BHD, SOS assembly
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Mon May 3 16:49:04 2021, Yehonathan, Update, BHD, SOS assembly 
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Tue Jun 1 16:17:06 2021, Yehonathan, Update, BHD, SOS assembly
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Wed Jun 2 01:03:19 2021, Koji, Update, BHD, SOS assembly
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Fri Jun 18 19:02:00 2021, Yehonathan, Update, BHD, SOS assembly  
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Fri Jun 18 23:53:08 2021, Koji, Update, BHD, SOS assembly
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Tue Jun 22 17:05:26 2021, Yehonathan, Update, BHD, SOS assembly
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Tue Jul 27 17:14:18 2021, Yehonathan, Update, BHD, SOS assembly
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Tue Jul 27 20:12:53 2021, Koji, Update, BHD, SOS assembly
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Mon Jun 28 12:35:19 2021, Yehonathan, Update, BHD, SOS assembly    
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Tue Jun 29 20:45:52 2021, Yehonathan, Update, BHD, SOS assembly 
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Thu Jul 1 16:45:25 2021, Yehonathan, Update, BHD, SOS assembly
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Wed Jul 28 12:00:35 2021, Yehonathan, Update, BHD, SOS assembly
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Thu Sep 23 18:18:07 2021, Yehonathan, Update, BHD, SOS assembly 
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Tue Oct 26 10:17:14 2021, Yehonathan, Update, BHD, SOS assembly
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Thu Oct 28 23:13:19 2021, Yehonathan, Update, BHD, SOS assembly   
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Tue Nov 2 15:02:03 2021, Yehonathan, Update, BHD, SOS assembly
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Tue Nov 2 22:50:30 2021, Koji, Update, BHD, SOS assembly
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Mon Nov 8 17:22:27 2021, Yehonathan, Update, BHD, SOS assembly 
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Tue Nov 9 11:11:37 2021, Yehonathan, Update, BHD, SOS assembly
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Fri Nov 12 23:47:29 2021, Yehonathan, Update, BHD, SOS assembly
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Tue Nov 16 17:42:46 2021, Yehonathan, Update, BHD, SOS assembly    
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Tue Nov 16 18:28:53 2021, Koji, Update, BHD, SOS assembly 
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Wed Nov 24 14:15:15 2021, Yehonathan, Update, BHD, SOS assembly
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Wed Dec 1 12:57:08 2021, Yehonathan, Update, BHD, SOS assembly 7x
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Mon Dec 6 18:23:04 2021, Yehonathan, Update, BHD, SOS assembly
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Thu Dec 9 21:57:35 2021, Yehonathan, Update, BHD, SOS assembly 
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Tue Dec 14 14:02:33 2021, Yehonathan, Update, BHD, SOS assembly 
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Wed Dec 15 22:09:53 2021, Yehonathan, Update, BHD, SOS assembly
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Thu Dec 16 18:16:36 2021, Yehonathan, Update, BHD, SOS assembly   
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Fri Dec 17 17:50:17 2021, Yehonathan, Update, BHD, SOS assembly   
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Fri Dec 17 19:16:45 2021, Koji, Update, BHD, SOS assembly
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Fri Dec 17 22:16:07 2021, Yehonathan, Update, BHD, SOS assembly
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Sat Dec 18 00:56:14 2021, Koji, Update, BHD, SOS assembly
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Mon Dec 20 13:52:01 2021, Koji, Update, BHD, SOS assembly
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Mon Dec 20 17:26:13 2021, Yehonathan, Update, BHD, SOS assembly 7x
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Tue Dec 21 18:04:46 2021, Yehonathan, Update, BHD, SOS assembly
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Tue Jan 4 18:27:23 2022, Paco, Update, BHD, SOS assembly -- PR3    
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Wed Jan 5 19:18:06 2022, Yehonathan, Update, BHD, SOS assembly -- AS4  
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Thu Jan 6 17:00:20 2022, Yehonathan, Update, BHD, SOS assembly -- LO2  
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Thu Jan 6 17:16:51 2022, Yehonathan, Update, BHD, Using Peek screws/nuts
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Fri Jan 7 17:59:45 2022, Yehonathan, Update, BHD, SOS assembly -- SR2  
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Fri Jan 7 18:24:25 2022, Koji, Update, BHD, SOS assembly -- SR2
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Mon Jan 10 14:00:44 2022, not Koji, Update, BHD, SOS assembly -- SR2
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Tue Jan 11 09:53:14 2022, not Koji, Update, BHD, SOS assembly -- Peek screws and nuts
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Thu Jan 13 16:08:00 2022, Yehonathan, Update, BHD, gluing magnets after AS1/4 misfortune
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Fri Jan 14 17:33:10 2022, Yehonathan, Update, BHD, AS4 resurrection  
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Wed Jan 19 18:15:34 2022, Yehonathan, Update, BHD, AS1 resurrection   
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Thu Jan 20 12:10:51 2022, Yehonathan, Update, BHD, AS1 resurrection  
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Mon Jan 24 17:58:21 2022, Yehonathan, Update, BHD, PR2 Suspension
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Tue Jan 25 18:37:12 2022, TYehonathan, Update, BHD, PR2 Suspension  
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Thu Feb 24 18:05:58 2022, Yehonathan, Update, BHD, Re-susspension of AS1 
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Wed Mar 2 14:02:43 2022, Yehonathan, Update, BHD, Re-susspension of AS1
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Thu Mar 3 17:09:46 2022, Paco, Update, BHD, Re-susspension of AS1
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Mon Mar 7 16:56:08 2022, Yehonathan, Update, BHD, Re-susspension of AS1  
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Mon Mar 7 18:53:16 2022, Koji, Update, BHD, Re-susspension of AS1
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Tue Mar 8 12:24:13 2022, Yehonathan, Update, BHD, Re-susspension of AS1  
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Tue Mar 8 19:29:36 2022, Paco, Update, BHD, Re-balance of AS1
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Wed Mar 9 09:35:26 2022, Paco, Update, BHD, Re-balance of AS1
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Message ID: 16489
Entry time: Wed Dec 1 12:57:08 2021
In reply to: 16483
Reply to this: 16491
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Author: |
Yehonathan |
Type: |
Update |
Category: |
BHD |
Subject: |
SOS assembly |
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{Yehonathan, Tega}
We glued some magnets onto modified side blocks. We followed pretty much the same procedure form last time. The music wires were clamped on the side blocks away from the optic adapter. The clamps were screwed down using the low profile screws the Jordan obtained from UC components to allow maximum clearance for the coils (Attachment 2).
The modified side blocks with wires already clamped in them were screwed onto the adapter. We put the adapter on the EQ stops and do rough adjustments, making sure the side magnet is roughly on the center of a coil we inserted to the side. The wires were threaded through the wire clamp on the suspension block and clamped on the winches. We realigned the Oplev beam such that it is parallel to the table using the quad photodiode.
We balanced the height of the adapter. This time we used a camera facing the adapter. The tilt of the camera was set by drawing a straight line (red line in attachment 1) such that the bottom clamps on the SOS are parallel to it.
Then, we adjusted the winches such that the screws on the side blocks are on the same green line on attachment 1.
Once the height was adjusted, we clamped the wire on the suspension block and cut it at the winches.
We balanced the optic. We had to take out the front counterweight to get the balance (attachment 3).
We checked whether the wire is touching anything. We confirmed that it doesn't. The wire goes nicely through the new hole on the side blocks (attachment 4, 5).
We measure the resonance frequency for both yaw (attachment 6) and pitch (attachment 7). They both seem to be sub-Hz. The pitch trace also shows that the oscillations are centered around 0 meaning the optic is balanced.
There's still the issue of what to do with the lower back EQ stop not touching the adapter. |
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