Imperial Role on HK
Imperial currently leads the oscillation analysis and intermediate water Cherenkov detector physics groups. Imperial students are now analysing the sensitivity HK can achieve for oscillation physics, with a focus on the application of the ν-PRISM analysis technique to HK. This technique uses the energy dependence of the off-axis neutrino beam to better understand the neutrino cross-section. Linear combinations of off-axis neutrino beams allow us to create almost any desired neutrino flux shape. This opens the door to truly unique analysis possibilities, from energy dependent neutral current cross-sections to sterile neutrino searches to oscillation analyses without neutrino interaction models.
The group is also producing the primary calibration system of IWCD, a laser diffuser that can distribute uniform laser light across the full IWCD detector from any point within the detector. This is joined by the UniConeEx device, a quartz cylinder that diffracts laser light to produce a ring that mimics the Cherenkov light from a muon. Together these calibration systems will be used to reduce the detector uncertainties at IWCD to the 1% level, allowing the ambitious physics program to succeed.