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    User name Aniol

    Log entry time 23:59:33 on January13,2005

    Entry number 139210

    keyword=swing shift summary

    16:00 no beam in Hall
    21:10 MCC calls to say they are attempting to put pulsed beam into hall, 1mm carbon target in beam position
    21:28 do harp scan , 2068 = harp scan, hor sigma=49um, vert sigma=95um
    run 1788 C 1mm, 20 uA ps=1 for T1, T3, stop to change ps rates.
    22:02 start run 1789 1mm C, 20 uA, pointing measurement
    22:09 find that Q2 and Q3 on right arm are low in momentum, 1.3853 instead of 1.45, however, for R1789 start run record shows that both Q2 and Q3 on rhrs were ok.
    22:30
    We recycle RHRS Q2 and Q3 as per procedure but Q2 and Q3 return to their former incorrect values of 1.3857 GeV/c. Page tech on call.
    Lower beam current to 10 uA since RHRS data are not valid anyway.

    Techs call back and say we should hit RHRS ioc. This brings the quads back into control. See entry 139205.
    23:18 end run 1790, only left HRS is valid.
    23:20 If this problem with the RHRSoccurs again the RC (Bodo) wants to be contacted.
    23:24 set raster to 2x2 at the target using spot++
    23:30 ask MCC to go back to 20uA
    23:39 RHRS is set to go again
    23:39 start run 1793 1mm C, 20 uA raster on at 2x2
    23:54 end run 1793
    23:56 start run 1794 1 mmC, 20 uA raster off