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=== List of Eigenfrequencies ===
 1. 5493 Hz ( "C" shape being mode)
 1. 5537 Hz (these first two are the first bending modes - degeneracy is split by the blow hole on top)
 1. 9193 Hz (strange squeezing mode due to the blow hole)
 1. 12641 Hz
 1. 12693 Hz (second bending modes: "S" shape)
 1. 13935 Hz (first longitudinal mode)
 1. 18480 Hz (torsional mode)
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First torsional mode (18480 Hz).
<<ImageLink(refcav-m2.png,First Longitudinal Mode,height=700)>>

Reference Cavity Eigenmodes

List of Eigenfrequencies

  1. 5493 Hz ( "C" shape being mode)
  2. 5537 Hz (these first two are the first bending modes - degeneracy is split by the blow hole on top)
  3. 9193 Hz (strange squeezing mode due to the blow hole)
  4. 12641 Hz
  5. 12693 Hz (second bending modes: "S" shape)
  6. 13935 Hz (first longitudinal mode)
  7. 18480 Hz (torsional mode)

This is picture of the first longitudinal mode. f = 13935 Hz, I guess there's a few % error on the frequency due to differences in the real density and groove dimensions. refcav-m1.png

First torsional mode (18480 Hz). refcav-m2.png

Reference_Cavity/FEA/EigenmodePlots (last edited 2012-01-03 23:02:38 by localhost)