neutrinos in nuclear and particle physics...electron neutrinos -> electrons and other stuff muon...
TRANSCRIPT
Neutrinos in Nuclear and Particle Physics
Faculty
Bonnie FlemingKarsten HeegerReina Maruyama
Flavio Cavanna Ornella Palamara
http://wlab.yale.edu
Karsten Heeger, Yale University Yale, March 27, 2015
Neutrino Sources
Big-Bang neutrinos ~ 0.0004 eV
Neutrinos from the Sun < 20 MeV
Neutrinos from accelerators up to GeV (109 eV)
Antineutrinos from nuclear reactors < 10.0 MeV
Atmospheric neutrinos ~ GeV
black holes, gamma ray bursters, supernova remnants, cosmic rays, WIMPs?? 1011eV -1021 eV
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Karsten Heeger, Yale University Yale, March 27, 2015
Neutrino mass and mixing → Neutrino oscillation
How do neutrinos oscillate?
What is the absolute neutrino mass?
Are neutrinos their own antiparticles?
Are there more than 3 neutrinos?
Is there CP violation?
Open Questions in Neutrino Physics
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Karsten Heeger, Yale University Yale, March 27, 2015
Measurement of the Neutrino Mixing at Daya Bay
Data taking since 2011
Group has leading roles in detector design, installation, analysis
Observation of electron antineutrino disappearance over km-long baselines High-precision reactor experiment to measure neutrino oscillation to < 1%
νe νe,x νe,x
Prof. Heeger
Karsten Heeger, Yale University Yale, March 28, 2014
PROSPECT - Short Baseline Oscillation Experiment
L/E (m/MeV)0 1 2 3 4 5 6 7 8 9
Osc
./Uno
sc.
0.860.880.900.920.940.960.981.001.02
Osc. Amplitude: 0.92Mass Splitting: 0.10 eV
Phase I, 1 Year LivetimePhase II, 3 Year Livetime
L/E (m/MeV)0 1 2 3 4 5 6 7 8 9
Osc
./Uno
sc.
0.860.880.900.920.940.960.981.001.02
Osc. Amplitude: 0.92Mass Splitting: 1.78 eV
Phase I, 1 Year LivetimePhase II, 3 Year Livetime
νe Disappearance Oscillation Search
Prof. Heeger
Karsten Heeger, Univ. of Wisconsin Yale, April 4, 2014
CUORE - Search for 0νββ
Are neutrinos their own antiparticles? Heat sink
Thermal couplingThermometer
incidentparticle
Crystal absorber
Gran Sasso, Italy
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Prof. MaruyamaProf. Heeger
bolometers at 10mK
Karsten Heeger, Yale University Yale, March 27, 2015
80 cm
CUORE: Cryogenic Underground Observatory for Rare EventSearch for 0νββ of 130Te and other rare events
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Neutrino physics in the coldest m3 of the Universe!
Data taking starting 2015
Tightly packed array of 988 bolometers, 206 kg of 130Te
See poster at lunch
CUORE - Search for 0νββ
Karsten Heeger, Yale University Yale, March 27, 2015
Project 8 - Neutrino Mass Measurement
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arXiv:1408.5362 D. M. Asner et al., 2014
B = 1 T E = 18 keV f = 26 GHz P = 1 fW
Electron energy spectrum near 18 keV endpoint should be distorted by the effective mass of νe, squared.
Yale University March 25, 2015
Neutrinos from Accelerators
2/12/159
FNAL
2 neutrino beams on site (of 3 in the world!)
Create muon neutrino beam using the particle accelerator complex just like how neutrinos are produced in the upper atmosphere
Send the muon neutrinos over 500m to the MicroBooNE detector
Look for electron neutrinos that have appeared in the beam!
Fermi National Accelerator Lab
(DOE Lab outside of Chicago)
Prof. Fleming
MicroBooNE TPC November 2012
MicroBooNE Experiment Liquid Argon Time Projection Chamber
ν
Electron neutrinos -> Electrons and other stuff Muon neutrinos -> muons and other sutff
Other interactions that produce single photons
Neutrino hits the argon and
produces charged particles.
The particles produced tell you
about the neutrino -> flavor
-> energy …
Prof. Fleming
Once detector assembly was finished, Moved the detector to the detector hall – summer 2014
Prof. Fleming
MicroBooNE at 470 m
LAr1-ND at 100 m
A LArTPC Near Detector to run in conjunction with MicroBooNE
New Experiment proposed to run as a near detector on the BNB at Fermilab – LAr1-ND
(Ornella Palamara co-spokesperson)
Prof. FlemingO. Palamara
Tertiary beamline instrumented with wire chambers and TOFTPC installation
TPC wire plane installation and testing
Light collection system installation and testing
LArIAT
New Neutrinos…. νµ νe
Baseline: ~1 km
Neutrinos vs anti-neutrinos
νµ νe
Baseline: >1000km
Precision detectors: Liquid Argon Time Projection Chamber
New powerful experimental techniques
Long Baseline Neutrino Experiment (LBN)
• Muon (and anti-muon) neutrinos oscillating to electron (and anti-electron) neutrinos
• Travel a baseline of 1300km from Fermilab to and old gold mine in Homestake South Dakota
• Put a MASSIVE Liquid Argon TPC deep underground to measure neutrinos
(this will take a while and cost a lot of money so while we are involved, not so actively day to day right now….)
Karsten Heeger, Yale University Yale, March 27, 2015 16
“Men [and women] wanted for hazardous journey. Small wages, bitter cold, long months of complete darkness, constant danger, safe return doubtful. Honour and recognition in case of success.”
Sir Ernest Shackleton