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Entry  Sun Sep 23 18:28:04 2012, tara, Notes, Drawings, 1.45" refcav mount cav_mount_assembly2.PDFcav_mount_assembly2.PDFcav_mount_bottom.PDFcavity_mount_top.PDF
    Reply  Thu Sep 27 17:13:13 2012, tara, Notes, Drawings, 1.45" refcav mount cav_mount_assembly_3.PDFpeek_v2.PDF
       Reply  Thu Oct 4 23:28:06 2012, tara, Notes, RefCav, comsol simulation for cavity suspension cavity_sagging_2012_10_04.pngcavity_sagging_0_2012_10_04.png
          Reply  Wed Oct 10 01:38:49 2012, tara, Notes, RefCav, comsol simulation for cavity suspension 
             Reply  Wed Oct 10 21:31:57 2012, tara, Notes, RefCav, comsol simulation for cavity suspension plot.pngcavity_sagging_0_2012_10_04.png
                Reply  Thu Oct 11 19:07:06 2012, tara, Notes, RefCav, comsol simulation for cavity suspension plot_degree_area.png
                   Reply  Sat Oct 13 23:38:08 2012, tara, Notes, RefCav, comsol simulation for cavity suspension dis_tilt_12_45.png
                      Reply  Tue Oct 16 01:14:00 2012, tara, Notes, RefCav, comsol simulation for cavity suspension disx_y.png
                         Reply  Wed Oct 24 11:16:52 2012, tara, Notes, RefCav, comsol simulation for cavity suspension analyzed_plot.pnganalyzed_plot.figIMG_1914.jpg
                            Reply  Fri Oct 26 04:05:18 2012, tara, Notes, RefCav, comsol simulation for cavity suspension plot_line.pngplot_line.pngplot_line.pngplot_angle.png
                               Reply  Tue Feb 4 01:11:01 2014, tara, Notes, RefCav, comsol simulation for cavity suspension 
                                  Reply  Tue Mar 4 18:53:48 2014, tara, Notes, RefCav, comsol simulation for cavity suspension hist_small_mount_err.pnghist_small_mount_err.fig
       Reply  Wed Oct 31 16:00:13 2012, tara, Notes, Drawings, 1.45" refcav mount Assem2.PDFAssem2_1.PDF
          Reply  Thu Nov 8 20:00:33 2012, tara, Notes, Drawings, 1.45" refcav mount 7x
Message ID: 1062     Entry time: Sat Oct 13 23:38:08 2012     In reply to: 1061     Reply to this: 1063
Author: tara 
Type: Notes 
Category: RefCav 
Subject: comsol simulation for cavity suspension 

 After checking displacement and tilt of the mirrors from various support points, the tentative support positions will be 1.2"  and 30 degree, (see entry 1060 for their definitions). I'll check the sensitivity along other directions (horizontal), and see if the noise budget will be acceptable or not.

 

After running more simulations, I got the cavity's length sensitivity due to vertical acceleration. The angle varied between 12 to 45 degree. And the nice point seems to be 30 degree at 1.2".  I will check the length and tilt sensitivity on horizontal acceleration, and compute the noise budget to make sure that seismic noise will be acceptable. After that I'll finish the drawing for the cavity mount.

dis_tilt_12_45.png

 

Note: I just realized that I should have used strain/acceleration unit in the displacement plot. I'll fix that later.

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