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    User name perdrisat

    Log entry time 20:28:57 on February11,2000

    Entry number 33560

    keyword=raster+spot problems

    First attempt at taking data at 18:00, after trouble shooting for unacceptable raster profile. Raster spot again 1 mm Hx4 mm V; max current for x-raster in midlle room
    increases it to 2 mmx 4 mm, still not acceptable.
    18:45 do a HARP scan at request of MCC, to "fix" raster.
    20:25 we are still inactive; a power supply has been located, may get installed asap.
    THE PROBLEM: we are told that it is necessary to reproduce the beam spot and raster size of the previous kinematics. That is 100micronx100micron at target (harp 6), and 4x4 mm^2 for raster size.
    The raster size cannot be made larger than 2x4; ergo we need a new power supply for Moeller quad.
    The spot size is of order 100x250 micron, judged unacceptable by Arun.