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User name peter
Log entry time 01:29:34 on August13,2003
Entry number 110469
keyword=No Fast Feedback
MCC are preparing to send beam back to the hall. However, they have asked that we run without using the fast feedback system. The Lamberton magnet in the hall A beamline, in front of the first BPM, has a broken shunt. The corrector for the FFB is being used to compensate for this; it is being pushed hard enough that MCC fears it may break if we try to use it for the FFB as well.
After discussing the situation with the run coordinator, we have agreed to proceed without using the FFB and to take data. The problem with the broken shunt will be looked at later today, during the energy change. In the meantime, we will monitor the beam position carefully during the data taking and contact MCC as needed to reposition it.