Neutrinos

The observation of neutrino oscillations both solved the solar neutrino puzzle and opened up the possibility of CP violation in the neutrino sector. This will be searched for by the next generation of neutrino experiments in the coming decay which will also study proton decay and astrophysical neutrinos.

The PPE group works on both the next generation neutrino experiments Hyper-K in Japan and http://www.dunescience.org/ in the USA.

Hyper-K is a planned next generation underground water Cherenkov detector situated in Kamioka, Japan. Currently, it is the R&D phase with first running expecting around 2026. It consists of two cylindrical tanks  each with a height of 60 m and diameter of 74 m giving a 520,000 tonne water target. The detector volume is about 10 times larger than the existing Super-Kamiokande (SuperK) detector. On the walls of the tanks, 40,000 ultra-sensitive photo-sensors will be installed,  to detect the Cherenkov light generated in the water. 

Hyper-K will serve as the far detector for a long baseline neutrino oscillation experiment planned for the upgraded J-PARC proton synchrotron beam located at Tokai. With a total exposure of 7.50 MW x 107s to the $2.5^{\circ}$ off-axis neutrino beam, Hyper-K aims to make a measurement of the CP (charge-parity) violating phase of the neutrino mixing matrix, $\delta_{CP}$, and to determine the neutrino mass hierarchy through the study of atmospheric neutrinos. It is expected that the CP phase $\delta_{CP}$ can be determined to better than $19^{\circ}$ for all possible values of $\delta_{CP}$ and CP violation can be established with a statistical significance of 3(5)σ for 76(58)% of all possible values of $\delta_{CP}$.

The detector is also capable of observing proton decays, atmospheric neutrinos, and neutrinos from astronomical origins enabling measurements that far exceed the current world best measurements. The focus of our work is low energy reconstruction and neutron tagging for a new intermediate water cherenkov detector (E61) and R&D for the outer veto detector of Hyper-K itself. A possible design for this that we are studying is based on 3" PMTs with wave length shifting plates.

For information about Hyper-K related research being performed at Edinburgh please contact Greig CowanMatthew Needham or s.playfer [at] ed.ac.uk (Steve Playfer).

We are also part of the the ANNIE experiment at Fermilab. ANNIE aims to measured neutron yield of atmospheric neutrino interactions in gadolinium-doped water and to act as testbed for a new type of photon detector (The LAPPD) which has precision timing capabilities and promises to transform the field of single photon detection. On ANNIE we are focussed on simulation studies of the LAPPD response and the application of machine learning techniques to event reconstruction.

DUNE is a long-baseline neutrino expeiment under construction in the US. A beam of neutrinos will be sent from Fermilab, near Chicago to the Stanford Underground Research Lab in South Dakota 800 miles away. The DUNE far detector consists of 70,000 tonnes of liquid Argon. The use of liquid Argon allows to reconstruct the products of neutrino interactions with high precision. The Edinburgh group activities are related to data acquisition, networking, detector simulation and photodetector development. For further information contact f.muheim [at] ed.ac.uk (Franz Muheim) or peter.clarke [at] ed.ac.uk (Peter Clarke).

PhD project opportunities in Neutrinos

People in Neutrinos

Telephone numbers in the list below are shown as UK numbers. Callers from outside the UK should remove the leading zero and use the UK country code (+44).

NamePositionContact detailsLocationPhoto
Academic staff
Peter ClarkeProfessor
JCMB
5421
Photo of Peter Clarke
Franz MuheimProfessor
JCMB
5422
Photo of Franz Muheim
Matthew NeedhamChancellor's Fellow
JCMB
5411
Steve PlayferProfessor
JCMB
5420/ 5301
Photo of Steve Playfer
Research staff
Greig CowanSTFC Ernest Rutherford Fellow
JCMB
5413
Photo of Greig Cowan
Evangelia DrakopoulouPDRA
JCMB
5414
Research postgraduates
Mahdi TaaniPostgraduate Student
JCMB
5301
Photo of Mahdi Taani