Status and prospects of the JUNO experiment Gioacchino Ranucci INFN – Milano On behalf of the JUNO Collaboration London – Neutrino 2016 July 6, 2016 • Determination of the neutrino mass hierarchy with a large mass liquid scintillation detector located at medium distance – few tens of km – from a set of high power nuclear reactors • Precise measurements of oscillation parameters • Additional astroparticle program • Requirements, technical features and status of the experiment Neutrino 2016 - July 6, 2016 Gioacchino Ranucci - INFN Sez. di Milano 1
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Gioacchino Ranucci INFN – Milano On behalf of the JUNO ......Gioacchino Ranucci INFN – Milano On behalf of the JUNO Collaboration London – Neutrino 2016 July 6, 2016 • Determination
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Status and prospects of the JUNO experiment
Gioacchino RanucciINFN – Milano
On behalf of the JUNO Collaboration
London – Neutrino 2016July 6, 2016
• Determination of the neutrino mass hierarchy with a large mass liquid scintillation detector located at medium distance –few tens of km – from a set of high power nuclear reactors
• Precise measurements of oscillation parameters
• Additional astroparticle program
• Requirements, technical features and status of the experiment
Neutrino 2016 - July 6, 2016 Gioacchino Ranucci - INFN Sez. di Milano 1
JUNO physics summaryDaya Bay &Reno&DC 53 km
JUNO
KamLAND 20 kton LS detector ~3 % energy resolution-the
Gamma rejection: passive shielding (water) Magnetic FieldCompensating Coil
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Muon Veto DesignTop Tracker
Using OPERA plastic scintillator (49m2/module)Three layers to ensure good muon trackingPartial coverage due to available modules• Reject ~50% muons• Provide tagged muon sample to study
reconstruction and background contamination with central detector
P1.078, The design of the JUNO veto system, Haoqi Lu Eric Baussan
Determine the choice of sub-systems Al2O3 column, distillation, gas striping, water
extraction
Al2O3 column pilot plant installedin Daya Bay LS hall
Distillationsystem
Steamstripping
system
Distillation and steam stripping system
Installed at Daya Bay
Purify 20 ton LAB to test the overall design of purification system at Daya Bay. Replace the target LS in one detector
Quantify the effectivities of subsystems
Neutrino 2016 - July 6, 2016 Gioacchino Ranucci - INFN Sez. di Milano 23
Neutrino 2016 - July 6, 2016 Gioacchino Ranucci - INFN Sez. di Milano
Overall LAB5 view at Daya Bay
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P3.051, The liquid scintillator system of the JUNO, Li Zhou
Many other ongoing tasks• Calibration:
– guided source insertion, LED, laser, CCD, …• Electronics, cable,box,… for the 3” PMT • LS filling• Slow control
– PMT, water, environmental monitoring & control• DAQ: crates, server, router, software, …• Offline farm, data storage/data center, software, …• Radioactivity measurements and screening • Development of MC and analysis tools• …
Neutrino 2016 - July 6, 2016 Gioacchino Ranucci - INFN Sez. di Milano
P1.013, A highly-integrated receiver chip with an automatic baseline regulation for JUNO, Pavithra Muralidharan et alP1.078, Radioactivity evaluation and control for the JUNO detector components and materials, Jie ZhaoP3.049, Measurement of the fluorescence quantum yield of bis—MSB, Xuefeng DingP4.004, Atmospheric neutrinos in JUNO, Wanlei GuoP4.085, Supernova Neutrino Observation at JUNO, Liangjian Wen
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Neutrino 2016 - July 6, 2016
ConclusionThe vast potential physics reach of very large liquid scintillator detectors - MH determination and beyond – is the foundational motivation of JUNO conceived and planned to mark significant breakthroughs for the ultimate quest of the neutrino properties
The Collaboration is rapidly progressing toward the construction of the detector with all the important design decisions already taken, the prototyping phase marking important steps forwards for all the subsystems and with the excavation of the site going ahead
The JUNO exciting science program will start in 2020 when the experiment will be filled
Thank you!Gioacchino Ranucci - INFN Sez. di Milano 26