Dual Calorimetry for High Precision Neutrino Oscillation Measurement at JUNO Experiment - PhD defense - HAN Yang

You are invite to PhD defense of HAN Yang, which will take place on November 30, Monday, at 14:00. It will be remotely through zoom.

The zoom link is:
ID de réunion : 832 5479 5028
Code secret : 243857

The topic of the thesis is the "Dual Calorimetry for High Precision Neutrino Oscillation Measurement at JUNO Experiment " under the supervision of Anatael CABRERA and Antoine KOUCHNER at APC and IJCLab.
Please see the abstract below.

JUNO is a new generation neutrino experiment based on the world's largest liquid scintillator detector, aiming primarily for the high precision reactor neutrino oscillation measurements. Its major scientific prospects include the neutrino mass ordering (MO) determination and the unprecedented precision measurement of oscillation parameters. The most critical and challenging topic for JUNO is the energy control including both accuracy and precision in order to achieve the most precise neutrino oscillation measurements. The goal of the energy control in the JUNO detector is to have an unprecedented ~3% energy resolution at 1 MeV and sub-percent energy detection systematics. Motivated by the challenging energy control, a novel design, called Dual Calorimetry, is implemented for the first time at JUNO by introducing a second readout (SPMT) system in addition to the main readout (LPMT) system. This design brings some unique insights for the systematics control through the breakdown of the degeneracy of different detector response compositions including non-linearities and non-uniformity.

This thesis is devoted to develop, for the first time ever, the novel detector calibration technique of the Dual Calorimetry to address the energy control in terms of both accuracy and precision. The methodology of the novel calibration technique, together with its prospect performance, i.e. sub-percent energy control, will be presented. For the critical hardware validation of the Dual Calorimetry, the performance of the SPMT readout electronics is preliminarily tested and validated during this thesis. The Dual Calorimetry technique developed in this thesis will ensure the conditions of the ~3sigma JUNO intrinsic MO determination and sub-percent oscillation parameters measurement. Besides the JUNO intrinsic MO study, a MO synergy study between JUNO and long baseline neutrino beam experiments is also performed during this thesis for investigating the possible fully resolved MO measurement (>5sigma). Hence, this thesis covers several novel techniques that are now considered as baseline in JUNO covering from the hardware all the way to the most important physics of JUNO.


Lundi, 30 novembre, 2020 - 14:00 to 17:00

Localisation / Location: 

  • Soutenance de thèse

Equipe(s) organisatrice(s) / Organizing team(s): 

  • Autre