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yoshinori.fujii - 18:33 Friday 31 August 2018 (5973) Print this report
Comment to drift during pumping down (5965)

I tried to make larger gap between one of the primary and secondary coil of the BF-LVDTs, by using the stepping motor at IP stage, but the stuation were not much improved. Now the coils are not touching if we do not excite large motion. This will be adjusted somehow.

Just for my note, the following is the status in um:

  IP-L IP-T IP-Y BF-L BF-T BF-V BF-P BF-R BF-Y
just before pumping 750 -750 -50 -1250 200 -4400 6200 2200 16000
18h27m 30th 720 -71 106 -2715 -171 -4720 6426 2130 20889

PosA/B/C => 13315/130698/-76268 steps

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