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jordan.vanosky@LIGO.ORG - posted 16:08, Tuesday 08 July 2025 (85638)
HAM3 AIP Controller Swap

Jordan V, Anna I

The controller for the HAM3 AIP had maxed out on 7/02/25, so during maintenance today we swapped controllers with a refurbished Minivac controller. The ion pump initially was able to hold pressure and even decrease for a couple hours until it railed again, so this is more likely a failure of the ion pump. See attached plot of pressure after the controller swap.

We will swap the ion pump during next Tuesday maintenance.

 

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