Design of Accelerator Girder System for Vibration Suppression
Design of Accelerator Girder System for Vibration Suppression
Design of Accelerator Girder System for Vibration Suppression
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SLS <strong>Girder</strong> <strong>System</strong><br />
Diamond and Boomerang girders are <strong>of</strong><br />
similar design.<br />
Magnets are clamped to precisely machined<br />
girder’s surface.<br />
The magnet support (girder) shows a number<br />
<strong>of</strong> resonances in 15 Hz to 50 Hz frequency<br />
range.<br />
Without cam movers, the calculated<br />
frequencies can be quite high (f1 = 60 Hz <strong>for</strong><br />
Diamond girder, N. Hammond, MEDSI 2002 ).<br />
<strong>Vibration</strong> amplification (rms above 4 Hz): 10<br />
S. Sharma<br />
Ambient Ground Motion<br />
NSRRC/July 21, 2005<br />
Mechanical Engineering Group<br />
<strong>Accelerator</strong> <strong>System</strong>s Division<br />
Cam Mover (SLS)<br />
Machined Top Plate<br />
http://slsbd.psi.ch/pub/varia/dynal_iwbs04.pdf<br />
S. Redaelli et al., EPAC 2004 THPK011
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