The QUASAR Group, in collaboration with the beam instrumentation company D-Beam, has developed a novel beam monitor based on optical fibres. This PhD project will be based on this successful collaboration and target the development of a more comprehensive diagnostic system. This new system will have added capabilities in terms of both, locating RF breakdown events, and detecting precursor events to superconducting (SC) quenches.

The system works by running optical fibres along a beam line with a photodiode detection system attached to the end. When a shower of charged particles, generated via a beam loss or RF breakdown, passes through the fibre Cherenkov radiation is produced, which propagates down the fibre and it detected by the photodiode. Through either calibration based on known loss locations, or time of flight differences between two detectors, the source location can be measured to ~10 cm resolution.

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