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User name mcnulty
Log entry time 09:16:01 on September16,2009
Entry number 289894
Followups:
keyword=Work done during access/ spot++ problem investigation
I'm out of the hall. I could not find any problem with the Larm DAQ. I did a cosmic run with s0, hapdet, and VDCs on (24726) and as far as I can tell everything is normal. However, spot++ (and spot_L) for the Left is still giving the same errors.
I also took a clock trigger run in the Rarm (4602) and found spot_R to work as before -- with the strange/missing results for BPMA data and normal/good results for BPMB.
In the right arm I did not find that the BPM signal cable was un-seated or sagging at the ADC input--which was suspected as causing the strange spot_R results. However, the raster current distributions from spot_R look normal/good and it seems we can use these to center the raster on the holey Carbon target and goto production.
Bob is currently verifying/checking that the Larm daq is functioning properly. As soon as we are confident, we will goto beam permit.
We are currently taking cosmic runs in both arms 24729/4603 and the data looks good to me.
Calling MCC for Beam Permit. Will use spot_R for raster verification.