magggggg
第5楼2007/04/23
We had similar experiences. In our solution, we re-aligned the axis alignment from Gun tilt/hori.,spot size dependent GH,pivot point(ppx, ppy), to condensor lens for several times. Make sure everything in tha alignment is OK.
hailanshi
第6楼2007/04/23
我也做了好几次gun tilt和stigmator里的condensor,再消像散,但还是如故。