BNMR: Dual Channel Mode
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Introduction
When the beam is switched alternately between the two experiments bnmr and bnqr, the experiments are running in dual channel mode. When no switching takes place, and the beam is sent to either bnmr or bnqr experiment, the experiment is running in single channel mode. Switching the beam alternately between the two experiments is done by the Controls Group using EPICS switches. During the beam period for bnmr / bnqr, the experimenters telephone the controls group and ask them to change between dual channel and single channel modes as required. Experimenters must also ensure that the DAQ parameter "Enable dual channel mode" is set to the appropriate value, otherwise the DAQ will not run (assuming EPICS switch checking is enabled).
The EPICS switches are called XXX.