A new module is being developed to replace the Booster’s current LLRF frequency source. The new module will eliminate the need for the analog phase shift modules currently implemented in the radial position control loop and the A cavity RF/B cavity RF beam capture paraphasing functions. The new module will do this by implementing multiple DDS RF signal synthesizers tied together by a common frequency digital word and manipulated individually by independent phase digital words. In addition, the module will be programmed to perform the procedures for phase locking to the Main Injector RF and replace the set of modules currently used for this purpose.
The Booster LLRF controls will be configured so that the new system can be tested alongside the existing, running LLRF controls. This document captures many details for the installation of the control modules and testing hardware.
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PDF document (Configuring The LLRF System For Testing New Frequency ...pdf, 553.9 kB)