By measuring disappearance of muon neutrinos and appearance of electron neutrinos in the primarily muon neutrino beam, oscillation parameters can be constrained. Differences in appearance probabilities of neutrinos and antineutrinos is dependent on the CP violation phase and neutrino mass hierarchy. With the increase in statistics compared to T2K, CP conservation can be excluded at greater than 5s for 60% of true delta CP values after 10 years operation. For the maximal CP violation case, conservation of CP symmetry can be excluded in as little as three years.
With over 1000 electron (anti)neutrino events predicted in 10 years of running, Hyper-K will be systematics dominated. To achieve its goals, precise understanding of systematic errors is required. The UK is developing the light injection system for performing calibration in the Hyper-K detector, with diffusers and collimators being produced at Warwick and tested in Sheffield. Liverpool is responsible for the fibre optics and light sources, while also leading the light injection system installation efforts.
The light injection system will be used to perform charge and timing calibration of the Hyper-K PMTs. In addition to this, the large array of path lengths and incident angles of light from injectors on PMTs can be used to fit for water parameters, which is essential for accurate detector simulation and systematics. Analysis of calibration data from the light injection system will be led by Liverpool.
Team Leader
- Prof Neil McCauley
Academic staff
- Prof Jon Coleman
Research/Technical staff
- Dr Sam Jenkins
- Dr David Payne
- Dr Ellen Sandford
- Mr Balint Bogdan
PhD students
- Mr Unik Limbu
- Ms Naomi Foster
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