Status of JUNO's Small PMT System
ORAL
Abstract
The Jiangmen Underground Neutrino Observatory (JUNO), located about 650 meters underground in the Guangdong province, China, is a 20 kton liquid scintillator neutrino detector nearing the end of construction. Designed to achieve an unprecedented energy resolution of 3% at 1 MeV, its primary goal is to determine the neutrino mass ordering and precisely measure several neutrino oscillation parameters. Surrounding the 35.4-meter diameter acrylic sphere, JUNO utilizes 17,612 20-inch large photomultiplier tubes (LPMTs), and 25,600 3-inch small photomultiplier tubes (SPMTs).
The SPMTs fulfill several roles, most importantly serving as a linear reference with respect to which any instrumental non-linearities in the LPMT system can be calibrated. To achieve this, the SPMTs are designed to be much smaller than the LPMTs, and operate primarily in photon-counting mode in the energy regime of interest to reactor antineutrino physics. This talk will provide an overview of the SPMT system and its current status, covering the installation, commissioning, and early insights based on the initial commissioning data.
The SPMTs fulfill several roles, most importantly serving as a linear reference with respect to which any instrumental non-linearities in the LPMT system can be calibrated. To achieve this, the SPMTs are designed to be much smaller than the LPMTs, and operate primarily in photon-counting mode in the energy regime of interest to reactor antineutrino physics. This talk will provide an overview of the SPMT system and its current status, covering the installation, commissioning, and early insights based on the initial commissioning data.
–
Presenters
-
Adrienne Jacobi
University of California, Irvine
Authors
-
Adrienne Jacobi
University of California, Irvine