At 03:07 PM 9/19/02 -0400, Karen Dow wrote:
> A wire target has been installed near the upstream end of the target
>chamber, in place of the unpolarized gas cell. There are actually 2
>wires separated by 10mm. The wire target is driven by an EPICS
>application (see Dan Cheever with any questions). The accelerator
>operators will always move the wire target.
The calibrated mm readback has been offset so that the right, outermost
wire reads 0.00 at beam pipe center.
The left wire readback is offset b 10.2mm, so reads 0.00mm when the 2nd,
inner wire is at beam pipe center.
make a epics screen to view the following:
lit:wiretarget:LVDT:mm.VAL (the outer, 1st wire, wire position)
lit:wiretarget:LVDT_left:mm.VAL (the inner wire position)
-Dan
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