Slides - CASA - Jefferson Lab
Slides - CASA - Jefferson Lab
Slides - CASA - Jefferson Lab
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Vibrations on<br />
the ground<br />
Broadband excitation with<br />
decreasing amplitude with<br />
increasing frequency.<br />
• Maximise rigidity<br />
• Minimise weight (opposed to<br />
thermal stability)<br />
• Minimise beam height<br />
(frequency and Abbé error)<br />
• Optimise support positions<br />
• Increase damping<br />
Dynamic analysis<br />
Transmissibilty<br />
Lessons learnt from light sources:<br />
Increase natural frequencies<br />
ALL components<br />
Result on<br />
magnet<br />
Amplification at resonances<br />
• Alignment system as rigid as possible<br />
• + optionally locking of alignment<br />
CLICMeeting100409 C. Hauviller 46<br />
MB quad alignment with excentric cams
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