The Booster transfer sync module is used to generate the BES and
MI sync pulse at extraction. The module has as inputs:
The module has the following outputs:
The Booster revolution marker
The Booster dump position (this TTL signal is generated in the MCR)
The extraction trigger B:MIEXTR
The MI target marker (referred to as 'OAA' or offset AA) via single
mode fiber BP
The MI reset enable trigger B:MIBESE
The cycle reset pusle which fires on $10 and $12
The module is used to sync up the Booster extraction kickers to either
the Booster revolution marker or to the MI target marker. The module will
sync the BES pulse to the MI 'OAA' whenever it is present. When the 'OAA'
is not seen, the BES pulse will sync to the Booster revolution marker.
The dump switch position, when it is set to the Booster Dump (High TTL),
will sync all extraction requests to the Booster revolution marker.
The module has a single mode fiber receiver and transmitter accessible
through the back panel. The B:MIBESE trigger is used to enable a
reset pulse to the MI (via fiber) on MI beam cycles when the 'OAA' marker
is not present . A timing module which receives the BES, 'OAA', MIEXTR,
and a cycle reset pulse can be used to diagnose timing problems.
The module counts Booster RF cycles between the 'OAA' and BES pulses.
The output, B:BESAAT should be a flatline when snapshoted. Steps
in the B:BESAAT signal at extraction time may be indicative of timing jitter
between the BES and 'OAA' marker.
Booster extraction sync (BES)
The MI RF counter reset pulse sent through a FP BNC and BP single
The fiber input reflection ('OAA') to the FP
Transfer Sync Diagram
Transfer State Diagram
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