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Entry  Fri Jun 10 16:19:03 2016, ericq, Update, SUS, ETMX watch 
    Reply  Mon Jun 13 10:01:58 2016, Steve, Update, SUS, ETMX jumps noDamping24hrs.pngETMXjumps.png
    Reply  Tue Jun 14 15:55:17 2016, ericq, Update, SUS, ETMX watch ETMX_wander.png
       Reply  Tue Jun 14 16:53:16 2016, rana, Update, SUS, ETMX watch 
       Reply  Thu Jun 16 11:10:17 2016, Steve, Update, SUS, spare ETMX optics preparation to be hanged SOSsus_Page_1.pngSOSsus_Page_2.pngETMXspareTowerFace.jpgETMXspareTowerBack.jpgmagnets-dumbbells.jpg
          Reply  Tue Jun 28 09:14:27 2016, Steve, Update, SUS, ETMX optics preparation to be rehanged nylonFCss.jpg
             Reply  Wed Jun 29 08:20:04 2016, Steve, Update, SUS, First Contact shelf life 
                Reply  Wed Jun 29 14:32:22 2016, Steve, Update, SUS, how to remove epoxy from optics 
                   Reply  Wed Jun 29 16:02:29 2016, Steve, Update, SUS, ETMX beam baffle IMG_1608.JPG
                   Reply  Thu Jun 30 10:03:16 2016, Steve, Update, SUS, how to remove epoxy from optics SOSsoakDish.jpgSOSsoakDish_tv.jpg
                      Reply  Thu Jun 30 14:31:02 2016, Chemistry, Update, SUS, NO mad-scientist.jpg
                      Reply  Tue Jul 5 09:25:31 2016, Steve, Update, SUS, how to remove epoxy from optics SOSsoakingDish.jpgSOSsoakingD.jpg
          Reply  Thu Jul 7 09:13:54 2016, Steve, Update, SUS, SOS gluing fixture SOSgluingFixRarmWend.jpgSOSgluingFixRarm.jpgSOSgluingFixLarm45.jpgSOSgluingFixLarm.jpgSOSgluingFixture.jpg
Message ID: 12218     Entry time: Tue Jun 28 09:14:27 2016     In reply to: 12187     Reply to this: 12226
Author: Steve 
Type: Update 
Category: SUS 
Subject: ETMX optics preparation to be rehanged 

Given the effect on the contrast defect, the consensus at the meeting Wednesday 6-22  was that we should continue to use the existing ETMX optic. 

 
Does this imply that we can simply:
  • Vent
  • Remove the current ETMX suspension, and optic from the suspension
  • Replace the standoffs (and guide rod if necessary), leaving the current magnets in place
  • Re-suspend on the current, existing suspension, with new wire clamps
That is, if we are keeping the current optic, do we gain anything by replacing the whole suspension? Is there any reason to remove and replace magnets? (The wire clamps do need to be replaced, as a groove forms when they are installed.)
 
This could allow us to vent and execute this whole thing sooner. 
 
-Eric Q.
...............................
Yes, I think this is a reasonable approach. Besides the wire standoffs and wireclamps, the only other problem might by a worn groove in the top piece of the suspension (not the clamp piece, but the piece that the clamp holds the wire up against).
 
How about use the current ETM, but put it into the new suspension body with new wire standoffs?
 
Quote:

D Location

Number on

Drawing

 

Component

Name

 

 Baked Clean

 Pieces Needed

 

Pieces

In Stock

(on tower )

Notes
         
31,20,19,13 viton tips   not cut yet baked material in stock
30 6-32x0.75" stops 4 (4)  
29 steel music wire 0.017" not baked on roll  needs good wipes
28  1/4 "washer 4 (4)  
27 lock washer 4 50 install
26 Ag plated 1/4-20x1.25 4 (4)  
25 Ag plated1/4-25x.75 & not plated 20 (20)  
24 SS 4-40x.5 2 (2)  
23 SS 4-40x.38 4 (4)  
22 spring plunger 4+2 (4+2)  
         
         
18 magnets, 1.9mm od, length 3.2 mm 5 ~30 not coated, rusty buy Ni coated ones for future use
17 guide rod, 0.635 mm od, 3.3 mm 3 6 Al
16 wire standoff, 1 mm od, 4.8 mm 2 2 Al and ruby (ruby groove not centered)
15 short OSEMs 5 6  
14 spare ETMX in 40m wiki 1 1  confirmed in cabinet
         
12 dumbbell standoff 5 6  
11 Al stiffening plate 1 (1)  
10 wire clamp B in sus block 2 (2)  
9 wire clamp A 1 (1)  
8-7 lower clamp for lifting optics 2 (2)  
6 upper clamp to hold down optic 1 (1)  
5-4 left-right side of tower  1 ea (1ea)  
3 tower base 1 (1)  
2 sus block 1 (1)  
1 lower and upper OSEM holders 1ea (1ea)  
         
48 sandind fixture for magnet&dumbbell      
45 magnet-dumbbell assemblly fixture 1 1  
43 guide rod gluing fixture     shipped from LOH .... D000335...needs cleaning
         
  First contact   3-15-2013 purchase check expiration date OK
  FCPEEK peeler ring disk for TM cleaning 10 front,10 back side  have sheets only 32&19mm ID punches ordered
  GordonBrush custom for LIGO optical cleaning ~5 1 (3/8wide nylonSS) more from Calum available
  EP30-2 epoxy have  have expiration date 9-24-2016

NOT finished, last edited 6-28

 

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