Differences between revisions 9 and 20 (spanning 11 versions)

Suspension Thermal noise for CLIO 081105

sus_thermal.txt

T = 300 K, fo = 0.7 Hz, Q = 1e+5 and by assuming of structure damping

Wire specification
suspension wire: bolfur, 50 micron diameter, 400 mm length, 2 loops.
mass: sapphire, 100 mm diameter, 60mm thickness, 1.8kg.
Q of Violin mode
f1=699.05Hz, Q=1.0*10^5
f2=700.29Hz, Q=0.63*10^5
http://gw.icrr.u-tokyo.ac.jp:8888/clio_blog/2008/11/06/Graph_sens_081106_violin.pdf

Extrapolation to pendulum mode Q
- violin mode Q と pendulum Q の間には 1:2 or 1:4 の関係があるそうです。 (pending)
Expectation of pendulum mode Q
- みよきさんによるボルファ単体の Q は 1000。計算によるdissipation dilution factorは1.2*10^-4. これらを組み合わせると、期待されるQ=1*10^7.

CLIO/NoiseBudgets/081105/SuspensionThermalNoise (last edited 2009-07-03 16:59:52 by whitehole)

-  ⇤ ← Revision 9 as of 2009-07-02 11:45:33 → 
  Size: 1051
  Editor: whitehole
  Comment:
+   ← Revision 20 as of 2009-07-03 16:59:52 → ⇥
  Size: 1094
  Editor: whitehole
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
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-'''Suspension Thermal noise'''
+= Suspension Thermal noise for CLIO 081105 =
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-[[attachment:sus_thermal.txt]]
+ [[attachment:sus_thermal.txt]]
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+ <<BR>>'''
 T = 300 K,
 fo = 0.7 Hz, 
 Q = 1e+5 and 
 by assuming of structure damping
 '''
-Line 9:
+Line 15:
-* '''Suspension thermal'''
   '''
   fo = 0.7 Hz, 
   Q = 1e+5 and 
   by assuming of structure damping
   '''
----
* Wire specification
 suspension wire: bolfur, 50 micron diameter, 400 mm length, 2 loops.
 mass: sapphire, 100 mm diameter, 60mm length, 1.8kg.
+'''
 * Wire specification
  . suspension wire: bolfur, 50 micron diameter, 400 mm length, 2 loops.
  . mass: sapphire, 100 mm diameter, 60mm thickness, 1.8kg.
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-* Q of Violin mode
 f1=699.05Hz, Q=1.0*10^5
 f2=700.29Hz, Q=0.63*10^5
 [[http://gw.icrr.u-tokyo.ac.jp:8888/clio_blog/2008/11/06/Graph_sens_081106_violin.pdf]]
+ * Q of Violin mode
  . f1=699.05Hz, Q=1.0*10^5
  . f2=700.29Hz, Q=0.63*10^5
  [[http://gw.icrr.u-tokyo.ac.jp:8888/clio_blog/2008/11/06/Graph_sens_081106_violin.pdf]]
'''
<<BR>>
-Line 25:
+Line 27:
-* Extrapolation to Q of pendulum mode
 violin mode Q と pendulum Q の間には 1:2 or 1:4 の関係があるそうです。
+ * Extrapolation to pendulum mode Q
  ''violin mode Q と pendulum Q の間には 1:2 or 1:4 の関係があるそうです。'' (pending)
-Line 28:
+Line 30:
-* Expectation of pendulum mode Q
 みよきさんによるボルファ単体の Q は 1000。
 計算によるdissipation dilution factorは1.2*10^-4.
 これらを組み合わせると、期待されるQ=1*10^7.
+ * Expectation of pendulum mode Q
  みよきさんによるボルファ単体の Q は 1000。
  計算によるdissipation dilution factorは1.2*10^-4.
  これらを組み合わせると、期待されるQ=1*10^7.