COMMENT ON RF Maintenance and Repairs for Physics Run 2026
Replaced fiber cable between 2L04-6 filament board and analog instrumentation board and reseated filament board. Upon trying to restore filaments, new problems appeared in cavities 3, 4, and 7. It looks like there were a lot of aging filament boards in that zone whose expiration dates all came at once. Since we're out of spares, moved the good board from cavity 6 to cavity 7, and managed to perform a field repair on the cavity 4 board (a nylon screw holding an inductor housing together had crumbled away from heat and age).










