Ceramic Breaks cont'd

DOE-HDBK-6004-99

melting of the coax and could lead to a breach of confinement or even a water leak. Ceramic breaks

should be located away from where the coax is cooled. A breach in the ceramic break would allow

pressurized gas into the vacuum vessel and tritium into the coax and through the transmission lines

all the way back to the power supply. If the vacuum boundary is defined as a confinement system,

then the use of redundant ceramic breaks is recommended which reduces the possible leak rate to

what is determined acceptable by the facility safety analysis. If a vacuum vessel functions as a

containment, which is a more stringent requirement, then containment of the RF/vacuum vessel

interface could extend along the transmission line back to the power supply.