Differences between revisions 13 and 16 (spanning 3 versions)
⇤ ← Revision 13 as of 2009-07-03 16:53:46 →
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← Revision 16 as of 2009-07-03 16:54:52 → ⇥
Size: 1057
Editor: whitehole
Comment:
Deletions are marked like this. Additions are marked like this.
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  '''
  fo = 0.7 Hz,
  Q = 1e+5 and
  by assuming of structure damping
  '''
'''
 fo = 0.7 Hz,
 Q = 1e+5 and
 by assuming of structure damping
 '''
Line 15: Line 16:
  . mass: sapphire, 100 mm diameter, 60mm length, 1.8kg.   . mass: sapphire, 100 mm diameter, 60mm thickness, 1.8kg.

Suspension Thermal noise for CLIO 081105

  • sus_thermal.txt

    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
  • 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)