jeffrey.kissel@LIGO.ORG - posted 15:23, Wednesday 24 May 2017 - last comment - 15:44, Wednesday 24 May 2017(36386)
HAM6 Fast Shutter and OMC PZT High Voltage turned ON
J. Kissel, T. Shaffer In prep for their use during recovery, I've turned on the high voltage for the HAM6 Fast Shutter and OMC PZT. I attach pictures of how they look turned on. The racks are in the mezzanine above the CER. For the OMC PZT, we just flipped the big double power switch on the left. For the Fast Shutter, we flipped on the power switch, hit "Recall" > "1" > "Enter" then hit the "OUTPUT ON/OFF" button to energize the output. Of note -- the OMC PZT's output current was ~0.8 [mA], even though the sticky note below it suggests "2 mA". We weren't sure what this means, we'll ask others. (We checked the "I SET" parameters and it was a 80 [mA], suggesting that this was not limiting the output current.)
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For the record, we checked whether all vacuum pressures were sufficiently low before turning on the high voltage. They are.
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R. McCarthy, F. Clara, J. Kissel We've now turned on the ITM ESD High Voltage as well. These supplies are also in the mezzanine, but in rack C3, opposite the HAM6 high voltage stuff. Easy turn on: flip the silver ON switch in the bottom right corner of the box. Do both at the same time, as best you can.
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