Speaker
Description
The T2K is an experiment to study the neutrino oscillation to determine the CP violation in the lepton sector. The prediction of the neutrino flux plays an important role on evaluating the neutrino oscillation. One fundamental aspect in the process is to reduce the flux-related uncertainties. T2K experiment is currently undergoing upgrade processes such as the Near Detector ND280 and the neutrino beamline. One of the main beamline upgrades is the upgrade of the magnetic horn system, which involves the development of upgraded magnetic horns for higher beam power, and horn power supply upgrade to operate at the increased current of 320 kA to increase the neutrino flux by 10%.
In the present work, we focus our attention on the performance evaluation of the upgraded magnetic horn system. The magnetic horns will be operated at a peak current of 320 kA to achieve a high magnetic fields strength for the next beam run. In order to predict correctly the neutrino flux under 320 kA operation, it is crucial to determine the uncertainty involved in the process. In this report, details of the magnetic field measurement and prospects on the improvement of the current measurements are presented.
