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User name Higinbotham
Log entry time 09:30:45 on January11,2003
Entry number 91447
This entry is a followup to: 91334
keyword=Harp 5 & 6 Problems (follow-up from Friday evening)
Harps 1 thru 4 seemed to be working, but I did not get to check them beam.
(also checked the Bdl mapper and it is working fine)
On Friday evening, before the Hall was closed, Arne and I checked Harps 5 &6
since they didn't seem to be responding properly.
We found Harp 5 is getting stuck in the "in" position. This Harp should not be run until this is fix. We had to finally back it out by hand. Harp 6 the encoder is doing strange things. Cycling the power and reboot the IOC did not fix the problem.
These must be fixed as soon as possible, but since the tune of the had already been checked and since the OTR has been calibrated verse the Harps (checked yesterday), we can still check the beam size; also with the raster on, the BPMs and OTRs, can check the Raster size on the target.
Arun and Seonho were notified before we took beam last night of the situation.