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Entry  Fri Sep 25 11:08:33 2015, Steve, Update, SUS, wire standoffs wireStandOff_SOS.PDF
    Reply  Mon Dec 14 14:08:49 2015, Steve, Update, SUS, Ruby wire standoffs update 
       Reply  Tue Apr 12 09:14:57 2016, Steve, Update, SUS, Ruby wire - v - groove cut pictures Sapphire_prism_wire_standoff.JPG
       Reply  Wed Jun 1 15:01:56 2016, Steve, Update, SUS, wire standoffs update 06011603.PDF06011602.PDFsapphire_stand_off_v2.pdfside_OSEM_ETMY.jpg5p2wsf.png
          Reply  Thu Jun 2 16:35:44 2016, Koji, Update, SUS, wire standoffs update sapphire_stand_off_v3.pdfarrangement-v3.pdf
             Reply  Thu Jun 1 16:21:55 2017, Steve, Update, SUS, wire standoffs update 
                Reply  Mon Jun 5 10:30:45 2017, Steve, Update, SUS, ruby wire standoff pictures A087_R.png.bmpA097_chipped_edges.png.bmpA099_cal_wire.png.bmpA101_cal_wire_43_micron.png.bmpAl_SOS_R39mm.jpg
                   Reply  Mon Jul 17 16:22:01 2017, Steve, Update, SUS, ruby wire standoff pictures contacting_ridge.bmpcontacting_ridge.png
          Reply  Tue Aug 30 15:44:28 2016, Steve, Update, SUS, wire standoffs update 
             Reply  Tue Oct 11 10:38:51 2016, Steve, Update, SUS, wire standoffs update A028_-_20161010_170319.jpgA027_-_20161010_170202.jpg
             Reply  Fri Jan 27 14:50:04 2017, Steve, Update, SUS, wire standoffs update 
                Reply  Fri Jan 27 15:36:17 2017, Koji, Update, SUS, wire standoffs update 
                   Reply  Thu Feb 23 09:32:20 2017, Koji, Update, SUS, wire standoffs update Sapphire_prism_1(A015).pngSapphire_prism_2(A016).pngSapphire_prism_3(A014).png
                Reply  Thu Feb 2 12:17:48 2017, Steve, Update, General, USB microscope 
                   Reply  Thu Feb 9 08:03:08 2017, Steve, Update, General, USB microscope ordered 
                      Reply  Thu Feb 23 14:50:26 2017, Steve, Update, General, USB microscope returned 
Message ID: 12146     Entry time: Thu Jun 2 16:35:44 2016     In reply to: 12144     Reply to this: 13030
Author: Koji 
Type: Update 
Category: SUS 
Subject: wire standoffs update 

Gap of the prism from the mirror

Sag: s = R(1-Cos[ArcSin[d/2/R]])

- Mirror curvature sag for 2mm prism (R=37.75mm): s=13um

- Minimum gap: 20um => s=33um => R=15mm

- Nominal gap: 35um => s=48um => R=10mm

- Maximum gap: 50um => s=63um => R=8mm

The second figure shows somewhat realistic arrangement of the pieces

Attachment 1: sapphire_stand_off_v3.pdf  57 kB  | Hide | Hide all
sapphire_stand_off_v3.pdf
Attachment 2: arrangement-v3.pdf  4 kB  | Hide | Hide all
arrangement-v3.pdf
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