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Ken Lauer 

NALMS

Federica Murgia 

IM4K4 Motor Resonance Crashing a Turbo

TMO had a strange problem back in April: whenever they would move IM4K4 in or out, it would vibrate the stand violently to the point that it would cause a nearby turbo pump to crash, which was extremely disruptive to endstation operations.

TMO

• Granite 3 (all components are checked) is ready to go for dream mirror check out experiment(starting from 8/7): IP2(no chamber)-Granite 3 Controls I

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 Scientists will run dream mirror check out experiment and test all PMPS and veto groups at the same time

IM4K4 Motor Resonance Crashing a Turbo

TMO had a strange problem back in April: whenever they would move IM4K4 in or out, it would vibrate the stand violently to the point that it would cause a nearby turbo pump to crash, which was extremely disruptive to endstation operations.

Stepper motors are known for having some problems with resonance and high vibrations. Typically in industry you would pick servo motors if extremely smooth motion was a requirement. This isn't a requirement here, but "do not shake the stand when moving" is absolutely a reasonable ask.

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