Observation of Reactor Electron Antineutrino Disappearance & Future Prospect
|
|
- Ross West
- 5 years ago
- Views:
Transcription
1 Observation of Reactor Electron Antineutrino Disappearance & Future Prospect Soo-Bong Kim (KNRC, Seoul National University) at Kyungpook National Univ., November 1, 01
2 Birth of Neutrino Physics in trouble with b decay - Energy & momentum are not conserved - Observed continuous b spectra - Total spin is not conserved b decay 14 C 14 N + e S=0 S=1 S=1/ Bohr: Energy and momentum may not be conserved in b decay? Wolfgang Pauli s introduction of an imaginary particle (1931) Neutrino : Undetectable massless neutral fermion (Weakly interacting) Discovery of Neutrino : Reines & Cowan (1957)
3 Tiny Neutrino Mass GUT SM mass kg E=mc kg 10-7 kg Neutrino mass & oscillation : window for new physics beyond the standard model
4 Neutrino Oscillation PMNS Neutrino Mixing Angles (1998) ~80% P( e Reactor Antineutrino Oscillation ) e 1. m 1sin 7 13sin E 31 L Solar Neutrinos (?) (01) 3 3 Atmospheric Neutrinos ~100%
5 RENO Collaboration (1 institutions and 40 physicists) Chonbuk National University Chonnam National University Chung-Ang University Dongshin University Gyeongsang National University Kyungpook National University Pusan National University Sejong University Seokyeong University Seoul National University Seoyeong University Sungkyunkwan University YongGwang ( 靈光 ) : Total cost : $10M Start of project : 006 The first experiment running with both near & far detectors from Aug. 011
6 Summary of RENO s History &Status RENO began design, tunnel excavation, and detector construction in March 006 RENO was the first reactor neutrino experiment to search for 13 with both near & far detectors running, from the early August 011. RENO started to see a signal of reactor neutrino disappearance from the late 011. RENO submitted the first result to PRL on April, and it appeared on May 11, 01. sin ( stat) 0.019( syst) Data-taking & data-analysis in a steady state. Shape analysis and background reduction under progress.
7 Definitive measurement of the last, smallest neutrino mixing angle 13 based on the disappearance of reactor electron antineutrinos [citation : 16] Open a bright window for CP violating phase & mass hierarchy CERN Courier
8 Included in a new edition of Particle Data Listing this year
9
10 Efforts for Finding 13 Chooz (003) & Palo Verde (000): No signal sin ( 13 ) < 0.1 at 90% C.L. TK :.5 s excess (011) 0.03 sin ( < sin 13 ) = ( ) < 0.8 at 90% (δ CP C.L. =0 for for N.H.) 0.04 sin ( < sin 13 ) = ( ) < 0.34 at 90% (δ CP C.L. =0 for for I.H.) (Neutrino 01) MINOS : 1.7 s excess (011) 0 < sin ( 13 ) < 0.1 at 90% C.L. for N.H < sin ( 13 ) < 0.19 at 90% C.L. for I.H. Double Chooz : 1.7 s measurement (011) Daya Bay (Mar ) 5. s observation sin ( 13 ) = ± 0.016(stat.)±0.005(syst.) 0.010(stat.)±0.005(syst.) (Neutrino 01) RENO (Apr.. 01) 4.9 s observation sin ( 13 ) = ± 0.013(stat.)±0.019(syst.) sin ( 13 ) = ± 0.041(stat.) 0.030(stat.) ± 0.030(syst.) 0.05(syst.) (Neutrino 01)
11 sin ( 13 ) Measurements (5. s) (4.9 s) Janet Conrad, Physics 5, 47, April 3, (01) Double-CHOOZ, arxiv: , (01)
12 13 from Reactor and Accelerator Experiments * Reactor m 31 L 4 m P ee 1sin 13sin cos 13sin 1sin 4E 4E - Clean measurement of 13 with no matter effects * Accelerator - mass hierarchy + CP violation + matter effects Precise measurement of 13 1 L Complementary : Combining results from accelerator and reactor based experiments could offer the first glimpse of CP.
13 RENO Experimental Setup Near Detector Far Detector
14 RENO Detector 354 ID +67 OD 10 PMTs Target : 16.5 ton Gd-LS, R=1.4m, H=3.m Gamma Catcher : 30 ton LS, R=.0m, H=4.4m Buffer : 65 ton mineral oil, R=.7m, H=5.8m Veto : 350 ton water, R=4.m, H=8.8m
15 Summary of Detector Construction : Start of the RENO project ~ : Civil construction including tunnel excavation ~ : Detector structure & buffer steel tanks completed : Acrylic containers installed ~ : PMT test & installation : Detector closing/ Electronics hut & control room built : Installation of DAQ electronics and HV & cabling ~ 06 : Dry run & DAQ debugging ~ 07 : Liquid scintillator production & filling : Detector operation & commissioning : Start data-taking
16 PMT Mounting (010. 8~10)
17 PMT Mounting (010. 8~10)
18 Detector Closing (011. 1) Near : Jan. 1, 011 Far : Jan. 4, 011
19 Observed Daily Averaged IBD Rate A new way to measure the reactor thermal power remotely!!!
20 Reactor Antineutrino Disappearance R Far observed Far expected ( stat) 0.014( syst) A clear deficit in rate (8.0% reduction) Consistent with neutrino oscillation in the spectral distortion sin s significant signal ( stat.) 0.019( syst.) Near detector: 1.% reduction Far detector: 8.0% reduction
21 Future Plan for Precision Measurement of 13 sin ( stat.) (4.9 s) (30 days) (3 years) 0.019( syst.) 3 years of data : ±0.01 for the total measurement error - statistical error : ±0.013 (~00 days) ± systematic error : ±0.019 ±0.014 (background reduction) ±0.010 (reduction of reactor uncertainty + shape analysis) ±0.005 (reduction of detection efficiency uncertainty) Remove backgrounds Spectral shape analysis (with precise energy calibration) Reduce uncertainties of reactor neutrino flux & detector efficiency
22 Summary RENO was the first experiment to take data with both near and far detectors, from August 1, 011. RENO observed a clear disappearance of reactor antineutrinos. R ( stat) 0.014( syst) RENO measured the last, smallest mixing angle 13 unambiguously that was the most elusive puzzle of neutrino oscillations. sin ( stat) 0.019( syst) A surprisingly large value of 13 will strongly promote the next round of neutrino experiments to find the CP phase, and could reduce the costs by reconsideration of their designs.
23 Data-Taking & Data Set Data taking began on Aug. 1, 011 with both near and far detectors. Data-taking efficiency Data-taking efficiency > 90%. Trigger rate at the threshold energy of 0.5~0.6 MeV : 80 Hz Data-taking period (0 430 days) Aug. 011 ~ Oct. 01 A candidate for a neutron capture by Gd
24 Energy Calibration Cs 137 (66 kev) -Near Detector -Far Detector Ge 68 (1,0 kev) Co 60 (,506 kev) Cf 5 (./7.96 MeV)
25 Detection of Reactor Antineutrinos (prompt signal) γ(0.511mev) (delayed signal) ~180 ms + p D + (. MeV) ~8 ms (0.1% Gd) + Gd Gd + s (8 MeV) e - Neutrino energy measurement ν e e + p γ(0.511mev) prompt signal Delayed signal γ γ Gd n γ 30μs γ E ~ 8MeV
26 Gd Loaded Liquid Scintillator C n H n+1 -C 6 H 5 (n=10~14) Recipe of Liquid Scintillator Aromatic Solvent & Flour WLS Gd-compound LAB PPO + Bis-MSB 0.1% Gd+(TMHA) 3 (trimethylhexanoic acid) Steady properties of Gd-LS Stable light yield (~50 pe/mev) & transparency Stable Gd concentration (~0.11%)
27 IBD Event Signature and Backgrounds IBD Event Signature Prompt signal (e + ) : 1 MeV s + e + kinetic energy (E = 1~10 MeV) Delayed signal (n) : 8 MeV s from neutron s capture by Gd ~6 ms (0.1% Gd) in LS Prompt Energy Delayed Energy Backgrounds Random coincidence between prompt and delayed signals (uncorrelated) 9 Li/ 8 He b-n followers produced by cosmic muon spallation Fast neutrons produced by muons, from surrounding rocks and inside detector (n scattering : prompt, n capture : delayed)
28 Spectra & Capture Time of Delayed Signals Far Detector Observed spectra of IBD delayed signals t = 6. ± 0.3 msec Near Detector t = 6. ± 0.1 msec
29 Detector Stability
30 Expected Reactor Antineutrino Fluxes Reactor neutrino flux isotopes Pth E ) fi isotopes i ( E ) i f E ( - P th : Reactor thermal power provided by the YG nuclear power plant - f i : Fission fraction of each isotope determined by reactor core simulation of Westinghouse ANC - i (E ) : Neutrino spectrum of each fission isotope [* P. Huber, Phys. Rev. C84, (011) T. Mueller et al., Phys. Rev. C83, (011)] - E i : Energy released per fission [* V. Kopeikin et al., Phys. Atom. Nucl. 67, 198 (004)] i i i
31 Observed Daily Averaged IBD Rate R R1 R5 R4 R6 R5
32 Contribution of Reactor to Neutrino Flux at Near & Far Detectors Reactor # Far ( % ) Near (% ) Accurate measurement of baseline distances to a precision of 10 cm using GPS and total station Accurate determination of reduction in the reactor neutrino fluxes after a baseline distance, much better than 0.1%
33 Problems in Neutrino Physics (1) High precision measurement of neutrino oscillations : Why so large (compared to the quark mixing)? Precise values of mixing angles and mass difference? CP violating phase? (Asymmetry of matter and anti-matter) Dirac or Majorana? : Neutrinoless double beta decay?
34 Problems in Neutrino Physics () Neutrino mass hierarchy : ( m 31(3) m 1 > 0 i.e. m > m 1 ) Sign of m 31(3)? [ m 3 m > m 1 (normal; NH) or m > m 1 m 3 (inverted; IH) ] * m atm m 31(3) ( m 31 m 3 ) * m sol m 1 * m sol / m atm 0.03, m atm m sol > 0
35 Problems in Neutrino Physics (3) Neutrino masses : Why so small? How to extend the SM? (1) NH ( m 3 m > m 1 ) : m (3) = (m 1 + m 1(31) ) 1/ m ( m sol ) 1/ ev m 3 ( m atm ) 1/ ev () IH ( m > m 1 m 3 ) : m (1) = IH (m 3 + m 3(13) ) 1/ m m 1 ( m atm ) 1/ ev (3) QD ( m 1 m m 3 ) : NH m i ( m atm ) 1/ m 1 m m ev
36 P(e --> e ) RENO-50 Large 1 neutrino oscillation effects at 50 km + 5kton liquid scintillator detector RENO can be used as near detectors. Precise reactor neutrino fluxes Negligible contribution from other nuclear power plants. P R e e 4 cos 13sin 1sin 1 1 sin 13sin 1 cos 31 sin 1 1 sin 31 sin 1 1. Reactor Neutrino Oscillation Reactor Neutrino Oscillation RENO KamLAND L~50km experiment could be a natural extension of current RENO 13 experiment. (018 ~ ) RENO Competition with Daya L(km) Bay-II Timely support and start are important!
37 RENO-50 vs. KamLAND RENO-50 RENO-50 is dedicated to the YG power plant. (negligible contribution from the other nuclear power plants) RENO can be used as near detectors. Precise reactor neutrino fluxes : systematic error from ~3% to ~0.1% KamLAND uses the entire Japanese nuclear power plants as a source.
38 1 st m 1 Maximum (L~50km) ; precise value of 1 & m 1 + mass hierarchy (m 31) P R e e 4 cos 13sin 1sin 1 1 sin 13sin 1 cos 31 sin 1 1 sin 31 sin 1 sin 1 Large Deficit Precise 1 Ripple Mass Hierarchy cos 1 31sin 1 sin 31sin 1
39 5000 tons ultra-low-radioactivity Liquid Scintillation Detector RENO RENO m 8.8 m RENO OD PMTs Water 5.4 m 8.4 m 5 m 0 m LAB (5 kton) PMTs 0 m KamLAND 5 m
40 RENO-50 vs. KamLAND RENO-50 (50 km) KamLAND (180 km) Figure of Merit Oscillation Reduction Reactor Neutrino Flux 80% [6 reactors] 40% 53 0 [53 reactors] Detector Size Syst. Error on Flux Error on sin 1 5 kton ~ 0.3% ~1% 1 kton 3% 5.4% (50 km / 180 km) 13
41 J-PARC neutrino beam Dr. Okamura & Prof. Hagiwara
42 Physics with RENO-50 (1) Precise measurement of 1 and m 1 sin sin 1 1 ~ 1.0% 1s ( 5.4%) in a year m m 1 1 ~ 1.0% 1s (.6%) in ~3 years Determination of mass hierarchy (sign of m 31 or m 3) - Quite challenging : requires extremely good energy resolution - Plan B : an additional 00 ton detector at ~10 km (L : 300 m km + 10 km + 50 km) Neutrino burst from a Supernova in our Galaxy - ~1500 events (@8 kpc) - A long-term neutrino telescope
43 Physics with RENO-50 () Geo-neutrinos : ~ 300 geo-neutrinos for 5 years - Study the heat generation mechanism inside the Earth Solar neutrinos : with ultra low radioacitivity - Matter effects on neutrino oscillation - Probe the center of the Sun and test the solar models Reactor physics : non-proliferation Detection of J-PARC beam : ~10 events/year Test of non-standard physics : sterile/mass varying neutrinos
44 Physics with RENO-50 (3) Search for neutrinoless double beta decay RENO-50 Water 5 m 0 m LAB (5 kton) PMTs 0 m 5 m
45 Closing Remarks Neutrino physics has gone through remarkable progress during the last two decades. RENO, the first Korean neutrino detector, was the first secondgeneration reactor experiment to search for the last, remaining neutrino mixing angle with both near and far detectors in operation. RENO observed a clear disappearance of reactor antineutrinos, and performed a definitive measurement of 13. A surprisingly large value of 13 will strongly promote the next round of neutrino experiments to find the CP phase and determine the mass hierarchy. RENO has elevated the Korean neutrino physics to the worldleading class level.
46 RENO will continue data-taking for next 3~4 more years, reaching its sensitivity limit, in order to obtain a precise measurement of 13. Korean reactors can be freely used as an intense neutrino source to study the neutrino properties. We need a next, flagship neutrino experimental program continuously to play a world-leading role in neutrino physics. RENO-50, a multi-purpose neutrino detector, should be pursued to perform high-precision measurements of 1 and m 1, determine the mass hierarchy, and detect neutrinos from the astrophysical sources. A competing project may be Daya Bay-II. Timely start of RENO-50 is quite necessary. Thank you!
Observation of Reactor Antineutrinos at RENO. Soo-Bong Kim for the RENO Collaboration KNRC, Seoul National University March 29, 2012
Observation of Reactor Antineutrinos at RENO Soo-Bong Kim for the RENO Collaboration KNRC, Seoul National University March 29, 2012 Outline Introduction Experimental setup & detector Data-taking & data
More informationObservation of Reactor Antineutrino Disappearance at RENO
Observation of Reactor Antineutrino Disappearance at RENO Soo-Bong Kim for the RENO Collaboration KNRC, Seoul National University (presented at KEK on May 17, 2012) Outline Introduction Experimental setup
More informationRENO & RENO-50. RENO Reactor Neutrino Experiment. RENO = Reactor Experiment for Neutrino Oscillation. (On behalf of RENO Collaboration)
RENO Reactor Neutrino Experiment RENO & RENO-50 RENO = Reactor Experiment for Neutrino Oscillation (On behalf of RENO Collaboration) K.K. Joo Chonnam National University March 15, 2013 2013 ICRR Neutrino
More informationCurrent Results from Reactor Neutrino Experiments
Current Results from Reactor Neutrino Experiments Soo-Bong Kim (KNRC, Seoul National University) Tsukuba Global Science Week (TGSW015), Tsukuba, Sep. 8-30, 015 Neutrino Physics with Reactor 1956 Discovery
More informationRecent Results from RENO & Future Project RENO-50
Recent Results from RENO & Future Project RENO-50 Sunny (Seon-Hee) Seo Seoul National University Feb. 15, 2014 KIAS- NCTS Joint Workshop 2014 @High1 Neutrino Oscillation Pontecorvo 1957 MNS 1967 Solar
More informationA Large Liquid Scintillator Detector for Neutrino Mass Hierarchy : RENO-50
A Large Liquid Scintillator Detector for Neutrino Mass Hierarchy : RENO-50 International Meeting for Large Neutrino Infrastructures Ecole Architecture Paris Val de Seine, APPEC, 23-24 June, 2014 Soo-Bong
More informationNew results from RENO and prospects with RENO-50
New results from RENO and prospects with RENO-50 Soo-Bong Kim KNRC, Department of Physics and Astronomy, Seoul National University, Seoul 151-742, South Korea Abstract RENO (Reactor Experiment for Neutrino
More informationRENO Reactor Neutrino Experiment
RENO Reactor Neutrino Experiment "Reactor neutrino oscillation" and "Development of liquid scintillators for the neutrino experiments RENO = Reactor Experiment for Neutrino Oscillation (On behalf of RENO
More informationDaya Bay and joint reactor neutrino analysis
Daya Bay and joint reactor neutrino analysis Logan Lebanowski (Tsinghua University) on behalf of the Daya Bay collaboration 2016/11/4 - NNN16, Beijing 1 Contents Daya Bay Reactor Neutrino Experiment Introduction
More informationStatus and Prospects of Reactor Neutrino Experiments
Status and Prospects of Reactor Neutrino Experiments Soo-Bong Kim, Department of Physics and Astronomy Seoul National University Seoul 151-742, Republic of Korea arxiv:1504.08268v1 [hep-ph] 30 Apr 2015
More informationNeutrino Experiments with Reactors
Neutrino Experiments with Reactors 1 Ed Blucher, Chicago Reactors as antineutrino sources Antineutrino detection Reines-Cowan experiment Oscillation Experiments Solar Δm 2 (KAMLAND) Atmospheric Δm 2 --
More informationNeutrinos. Why measure them? Why are they difficult to observe?
Outline What is a neutrino? Why do we want to study them? Building a detector to detect the undetectable What does a neutrino detector see? How do you seperate a neutrino signal from the background? Neutrinos
More informationNeutrino Experiments with Reactors
Neutrino Experiments with Reactors 1 Ed Blucher, Chicago Lecture 2 Reactors as antineutrino sources Antineutrino detection Reines-Cowan experiment Oscillation Experiments Solar Δm 2 (KAMLAND) Atmospheric
More informationThe Double Chooz Project
The Double Chooz Project Progress and Expected Sensitivity David McKee, KSU 13 17 July 2009 TeVPA @ SLAC Outline I. Neutrino mixing and θ 13 II. Existing θ 13 measurements III. This is hard with a single
More informationNew Results from RENO
New Results from RENO 1 for the RENO Collaboration Seoul National University Department of Physics and Astronomy 1 Gwanak-ro, Gwanak-gu, Seoul, 151-747, Korea E-mail: shseo@phya.snu.ac.kr RENO (Reactor
More informationDaya Bay Neutrino Experiment
Daya Bay Neutrino Experiment Jun Cao Institute of High Energy Physics, Beijing 3rd International Conference on Flavor Physics, Oct. 3-8, 2005 National Central University Chung-li, Taiwan Neutrino Oscillation
More informationThe Daya Bay Reactor Neutrino Experiment
The Daya Bay Reactor Neutrino Experiment Ming-chung Chu The Chinese University of Hong Kong, Hong Kong On behalf of the Daya Bay Collaboration Partial support: CUHK VC Discretionary Fund, RGC CUHK3/CRF/10R
More informationarxiv:hep-ex/ v1 15 Aug 2006
The Double Chooz Experiment 1 Daniel M. Kaplan (for the Double Chooz Collaboration) Illinois Institute of Technology, 3101 South Dearborn Street, Chicago, Illinois, USA arxiv:hep-ex/0608040v1 15 Aug 2006
More informationParticle Physics: Neutrinos part I
Particle Physics: Neutrinos part I José I. Crespo-Anadón Week 8: November 10, 2017 Columbia University Science Honors Program Course policies Attendance record counts Up to four absences Lateness or leaving
More informationPoS(NEUTEL2017)007. Results from RENO. Soo-Bong Kim. for the RENO collaboration Seoul National University, Republic of Korea
for the RENO collaboration Seoul National University, Republic of Korea E-mail: sbk@snu.ac.kr The Reactor Experiment for Neutrino Oscillation (RENO) has been taking data near the Hanbit nuclear power plant
More informationRecent Discoveries in Neutrino Physics
Recent Discoveries in Neutrino Physics Experiments with Reactor Antineutrinos Karsten Heeger http://neutrino.physics.wisc.edu/ Karsten Heeger, Univ. of Wisconsin NUSS, July 13, 2009 Standard Model and
More informationThe Double Chooz reactor neutrino experiment
The Double Chooz reactor neutrino experiment Christian Buck, MPIK Heidelberg MPIK July, 30th 2009 Overview Motivation Double Chooz concept and design Status of experiment MPIK activities Summary Neutrino
More informationAn Underground Laboratory for a Multi-Detector Experiment. Karsten Heeger Lawrence Berkeley National Laboratory
Measuring sin 2 2θ 13 with Reactor Antineutrinos at Daya Bay An Underground Laboratory for a Multi-Detector Experiment Karsten Heeger Lawrence Berkeley National Laboratory On behalf of the Daya Bay collaboration
More informationReactor-based Neutrino Experiment
Reactor-based Neutrino Experiment Haoqi Lu Institute of High Energy physics, China Member of the Daya Bay collaboration 2013PIC, Beijing 1 Outline Introduction Reactor-based neutrino experiment Results
More informationThe Daya Bay Reactor Neutrino Oscillation Experiment
The Daya Bay Reactor Neutrino Oscillation Experiment Measurement of θ 13 Mixing Parameter Viktor Pěč for the Daya Bay Experiment Collaboration Charles University in Prague EPS HEP09, Neutrino Physics,
More informationCorrelated Background measurement in Double Chooz experiment
Correlated Background measurement in Double Chooz experiment Guillaume Pronost (Supervisor : Frederic Yermia) SUBATECH Journe es de Rencontres des Jeunes Chercheurs 2013 OUTLINE 1 - Neutrino Physics 2
More informationMeasurement of q 13 in Neutrino Oscillation Experiments. Stefan Roth, RWTH Aachen Seminar, DESY, 21 st /22 nd January 2014
Measurement of q 13 in Neutrino Oscillation Experiments Stefan Roth, RWTH Aachen Seminar, DESY, 21 st /22 nd January 2014 Overview Experiments with neutrinos Neutrino oscillations Reactor and accelerator
More informationStatus of 13 measurement in reactor experiments
Status of 13 measurement in reactor experiments Kwong Lau University of Houston, Houston, TX 7704, USA The status of 13 measurements from Daya Bay, RENO and Double Chooz experiments is reviewed. 1. INTRODUCTION
More informationKamLAND. Studying Neutrinos from Reactor
KamLAND : Studying Neutrinos from Reactor Atsuto Suzuki KEK : High Energy Accelerator Research Organization KamLAND Collaboration Outline 1. KamLAND Overview 2. Reactor Neutrinos 3. e Detection in Liquid
More informationThe ultimate measurement?
Reactor neutrinos θ13 The ultimate measurement? Pau Novella CNRS/APC 1 Overview Neutrino oscillations and the last mixing angle Reactor neutrinos as a probe to θ13 Unrevealing θ13 with reactor neutrino
More informationNeutrino Experiment. Wei Wang NEPPSR09, Aug 14, 2009
Search for at the Daya Bay Neutrino Experiment, Aug 14, 2009 Outline Neutrino oscillation and the search for θ 13 The Daya Bay neutrino experiment - Design of the Daya Bay detector - Systematic uncertainty
More informationThe Search for θ13 : First Results from Double Chooz. Jaime Dawson, APC
The Search for θ13 : First Results from Double Chooz Jaime Dawson, APC Contents Brief reminder θ13 current knowledge Reactor experiments Double Chooz Far detector Calibration Neutrinos & Backgrounds Oscillation
More information저작권법에따른이용자의권리는위의내용에의하여영향을받지않습니다.
저작자표시 - 비영리 - 변경금지 2. 대한민국 이용자는아래의조건을따르는경우에한하여자유롭게 이저작물을복제, 배포, 전송, 전시, 공연및방송할수있습니다. 다음과같은조건을따라야합니다 : 저작자표시. 귀하는원저작자를표시하여야합니다. 비영리. 귀하는이저작물을영리목적으로이용할수없습니다. 변경금지. 귀하는이저작물을개작, 변형또는가공할수없습니다. 귀하는, 이저작물의재이용이나배포의경우,
More informationShort baseline neutrino oscillation experiments at nuclear reactors
Short baseline neutrino oscillation experiments at nuclear reactors Christian Buck, MPIK Heidelberg Erice School, Sicily Sept, 17th 2017 Neutrino oscillations = 3 2 1 3 2 1 3 2 1 3 2 1 ν ν ν ν ν ν τ τ
More informationJelena Maricic Drexel University. For Double Chooz Collaboration. Spain. France. Germany U.S.A. Japan Russia. Brazil U.K. Courtesy of T.
Jelena Maricic Drexel University For Double Chooz Collaboration France Spain Germany U.S.A Japan Russia Brazil U.K. http://doublechooz.in2p3.fr/ J. Maricic, Drexel U 1 Courtesy of T. Lasserre ν e ν μ ν
More information章飞虹 ZHANG FeiHong INTERNATIONAL SCHOOL OF SUBNUCLEAR PHYSICS Ph.D. student from Institute of High Energy Physics, Beijing
章飞虹 ZHANG FeiHong zhangfh@ihep.ac.cn Ph.D. student from Institute of High Energy Physics, Beijing INTERNATIONAL SCHOOL OF SUBNUCLEAR PHYSICS 2012 Erice, 23 June 2 July 2012 1 Before Hunting Introduction
More informationReactor Neutrino Oscillation Experiments: Status and Prospects
6! 5! 4! 1 2! 3!! Reactor Neutrino Oscillation Experiments: Status and Prospects Survival Probability 1 0.8 0.6 0.4 0.2 0 20 4! 15 Karsten M. Heeger University of Wisconsin Data - BG - Geo & e 99.73% C.L.
More informationProspects for Measuring the Reactor Neutrino Flux and Spectrum
Prospects for Measuring the Reactor Neutrino Flux and Spectrum Karsten Heeger Yale University as a member of the Daya Bay and PROSPECT collaborations INT, Seattle, November 8, 2013 ν e /MeV/fisson Reactor
More informationThe Daya Bay Anti-neutrino Experiment
The Daya Bay Anti-neutrino Experiment On behalf on the Daya Bay Collaboration Jianglai Liu Shanghai Jiao Tong University KPS-CPS joint session, KPS annual meeting, Busan, 2011-10-20 1 13 in PMNS Matrix
More informationarxiv: v1 [hep-ex] 14 May 2015
arxiv:1505.03641v1 [hep-ex] 14 May 2015 Recent Results from Daya Bay Reactor Neutrino Experiment B. Z. HU on behalf of the Daya Bay collaboration Department of Physics, National Taiwan University, No.
More informationNeutrinos in Nuclear Physics
Neutrinos in Nuclear Physics R. D. McKeown Jefferson Lab, Newport News, VA, USA Department of Physics, College of William and Mary, Williamsburg, VA, USA DOI: http://dx.doi.org/10.3204/desy-proc-2014-04/305
More information- Future Prospects in Oscillation Physics -
Measuring θ 13 and the Search for Leptonic CP Violation - Future Prospects in Oscillation Physics - Karsten M. Heeger Lawrence Berkeley National Laboratory ν e flux θ 13 =? P ee, (4 MeV) 1/r 2 Evidence
More informationNEUTRINO OSCILLATION EXPERIMENTS AT NUCLEAR REACTORS
NEUTRINO OSCILLATION EXPERIMENTS AT NUCLEAR REACTORS GIORGIO GRATTA Physics Department, Stanford University, Stanford, CA 94305, USA E-mail: gratta@hep.stanford.edu In this paper I give an overview of
More informationWei Wang University of Wisconsin-Madison. NNN09, Estes Park, Colorado, Oct 8, 2009
The Hunt for at Daya Bay University of Wisconsin-Madison NNN09, Estes Park, Colorado, Oct 8, 2009 Outline Neutrino oscillation and the search for θ 13 The Daya Bay neutrino experiment - Design of the Daya
More informationarxiv: v6 [hep-ex] 10 Jan 2018
Spectral Measurement of the Electron Antineutrino Oscillation Amplitude and Frequency using 5 Live Days of RENO Data S. H. Seo, W. Q. Choi, H. Seo, S. B. Kim, S. Y. Kim, E. Kwon, D. H. Lee, Y. C. Lee,
More informationReactor Short Baseline Neutrino Experiment in Korea
Reactor Short Baseline Neutrino Experiment in Korea 09 June @ WIN 2015 / MPIK, Heidelberg, Germany Yoomin Oh On behalf of NEOS Collaboration Centre for Underground Physics, Institute for Basic Science
More informationSterile Neutrino Search at the NEOS Experiment. Department of Physics, Chonnam National University, Gwangju 61186, Korea
Sterile Neutrino Search at the NEOS Experiment, Chang-Hwan Jang, Kim Siyeon Department of Physics, Chung-Ang University, Seoul 06974, Korea E-mail: godpapa7@gmail.com Kyung-Kwang Joo, Ba-Ro Kim Department
More information1 Neutrinos. 1.1 Introduction
1 Neutrinos 1.1 Introduction It was a desperate attempt to rescue energy and angular momentum conservation in beta decay when Wolfgang Pauli postulated the existence of a new elusive particle, the neutrino.
More informationKamLAND. Introduction Data Analysis First Results Implications Future
KamLAND Introduction Data Analysis First Results Implications Future Bruce Berger 1 Tohoku University, Sendai, Japan University of Alabama University of California at Berkeley/LBNL California Institute
More informationNeutrino Experiments: Lecture 2 M. Shaevitz Columbia University
Neutrino Experiments: Lecture 2 M. Shaevitz Columbia University 1 Outline 2 Lecture 1: Experimental Neutrino Physics Neutrino Physics and Interactions Neutrino Mass Experiments Neutrino Sources/Beams and
More informationPrecise measurement of reactor antineutrino oscillations at Daya Bay
Precise measurement of reactor antineutrino oscillations at Daya Bay Vít Vorobel (on behalf of the Daya Bay Collaboration) Charles University in Prague HEP2007 Conference, Manchester, Jul. 19, 2007 1 The
More informationThe Daya Bay Reactor Neutrino Experiment
The Daya Bay Reactor Neutrino Experiment Lisa Whitehead Brookhaven National Laboratory for the Daya Bay Collaboration APS Meeting, Washington, D.C. Measuring 13 at a Reactor S jk =sin jk C jk =cos jk Neutrino
More informationNeutrino Physics. Neutron Detector in the Aberdeen Tunnel Underground Laboratory. The Daya Bay Experiment. Significance of θ 13
Neutrino Physics Neutron Detector in the Aberdeen Tunnel Underground Laboratory John K.C. Leung Department of Physics, HKU On behalf of CUHK, LBL & IHEP Presented to HKRPS on June 21, 2007 Neutrinos have
More informationRecent results from Super-Kamiokande
Recent results from Super-Kamiokande ~ atmospheric neutrino ~ Yoshinari Hayato ( Kamioka, ICRR, U-Tokyo ) for the Super-Kamiokande collaboration 1 41.4m Super-Kamiokande detector 50000 tons Ring imaging
More informationObservation of Mixing Angle 13
Observation of Mixing Angle 13 in the Daya Bay Reactor Antineutrino Experiment Kirk T McDonald Princeton U (April 24, 2012) on behalf of the Daya Bay Collaboration We observe that sin 2 2 13 = 0.092 ±
More informationProspects of Reactor ν Oscillation Experiments
Prospects of Reactor ν Oscillation Experiments F.Suekane RCNS, Tohoku Univ. Erice School 3/09/009 1 Contents * Motivation * Physics of Neutrino Oscillation * Accessible Parameters of Reactor Neutrinos
More informationarxiv: v7 [hep-ex] 16 May 2018
Spectral Measurement of the Electron Antineutrino Oscillation Amplitude and Frequency using 5 Live Days of RENO Data S. H. Seo, W. Q. Choi, H. Seo, S. B. Kim, S. Y. Kim, E. Kwon, D. H. Lee, Y. C. Lee,
More informationStatus of The Daya Bay Reactor Neutrino Experiment
Mary Bishai, BNL 1 p.1/29 Status of The Daya Bay Reactor Neutrino Experiment Neutrino Frontiers 2008, 10/23/2008 Mary Bishai (for the Daya Bay Collaboration) mbishai@bnl.gov Brookhaven National Lab. Mary
More informationRecent oscillation analysis results from Daya Bay
(On behalf of the Daya Bay Collaboration) E-mail: zhaojie@ihep.ac.cn The Daya Bay Reactor Antineutrino Experiment was designed to precisely determine the neutrino mixing angle θ 13 utilizing eight functionally
More informationNeutrino Masses and Mixing
Neutrino Masses and Mixing < Why so different??? (Harrison, Perkins, Scott 1999) The Mass Puzzle Seesaw mechanism L R m m D m 2 D M m D M m D L R M Heavy Majorana Neutrino Connection with high mass scales
More informationOutline. (1) Physics motivations. (2) Project status
Yu-Feng Li Institute of High Energy Physics, Beijing On behalf of the JUNO collaboration 2014-10-10, Hsinchu/Fo-Guang-Shan 2nd International Workshop on Particle Physics and Cosmology after Higgs and Planck
More informationT2K and other long baseline experiments (bonus: reactor experiments) Justyna Łagoda
T2K and other long baseline experiments (bonus: reactor experiments) Justyna Łagoda Neutrino mixing and oscillations mixing of flavor and mass eigenstates PMNS matrix parametrized as ( )( cxy = cosθxy
More informationMINOS. Luke A. Corwin, for MINOS Collaboration Indiana University XIV International Workshop On Neutrino Telescopes 2011 March 15
MINOS Luke A. Corwin, for MINOS Collaboration Indiana University XIV International Workshop On Neutrino Telescopes 2011 March 15 2 Overview and Current Status Beam Detectors Analyses Neutrino Charged Current
More informationObservation of Electron Antineutrino Disappearance at Daya Bay
Observation of Electron Antineutrino Disappearance at Daya Bay Karsten M. Heeger, University of Wisconsin on behalf of the Daya Bay collaboration 1 Neutrino Physics at Reactors Next - Discovery and precision
More informationNeutrino Physics: Lecture 1
Neutrino Physics: Lecture 1 Overview: discoveries, current status, future Amol Dighe Department of Theoretical Physics Tata Institute of Fundamental Research Feb 1, 2010 Plan of the course Omnipresent
More informationarxiv: v1 [hep-ex] 4 Mar 2014
International Journal of Modern Physics: Conference Series c World Scientific Publishing Company arxiv:1403.0731v1 [hep-ex] 4 Mar 2014 Reactor antineutrino experiments Haoqi Lu Institute of High Energy
More informationParticle Physics: Neutrinos part II
Particle Physics: Neutrinos part II José I. Crespo-Anadón Week 9: April 1, 2017 Columbia University Science Honors Program Course Policies Attendance Up to four absences Send email notifications of all
More informationNeutrinos: Yesterday, Today and Tomorrow. Stanley Wojcicki SLAC Summer Institute 2010 August 13, 2010
Neutrinos: Yesterday, Today and Tomorrow August 13, 2010 1 My Marching Orders 2 My Marching Orders...the summary talk should be visionary, rather than a dedicated summary of the SSI program. 2 My Marching
More informationOverview of Reactor Neutrino
Overview of Reactor Neutrino Chan-Fai (Steven) Wong, Wei Wang Sun Yat-Sen University 22 September 2016 The 14th International Workshop on Tau Lepton Physics Many thanks to Jia Jie Ling, Liang Jian Wen
More informationPoS(FPCP2017)024. The Hyper-Kamiokande Project. Justyna Lagoda
National Centre for Nuclear Research Otwock-Swierk, Poland E-mail: justyna.lagoda@ncbj.gov.pl The Hyper-Kamiokande is a project of a large water Cherenkov detector to be built in Japan. The design allows
More informationResults on geoneutrinos at Borexino experiment. Heavy Quarks and Leptons Yamagata Davide Basilico
Results on geoneutrinos at Borexino experiment Heavy Quarks and Leptons 2018 - Yamagata Davide Basilico Outline 1. Geoneutrinos 2. Borexino 3. Analysis and results 2 What are geoneutrinos? Distribution
More informationSteve Biller, Oxford
Steve Biller, Oxford Who the hell are you?! No idea! ν µ ν τ ν e ν µ,τ 14:00 GMT, 28 November, 2006 Detector high voltage was ramped down for the last time in Sudury as SNO ceases operation R.I.P. = big
More informationScintillator phase of the SNO+ experiment
Mathematik und Naturwissenschaften Institut für Kern- und Teilchen Physik Scintillator phase of the experiment Valentina Lozza On behalf of Collaboration TAUP2011, 05.09.2011 Munich Outline = SNO + Liquid
More informationSolar Neutrinos in Large Liquid Scintillator Detectors
Solar Neutrinos in Large Liquid Scintillator Detectors M. Chen Queen s University DOANOW March 24, 2007 Low Energy Solar Neutrinos complete our understanding of neutrinos from the Sun pep, CNO, 7 Be, pp
More informationThe future of neutrino physics (at accelerators)
Mauro Mezzetto, Istituto Nazionale Fisica Nucleare, Padova The future of neutrino physics (at accelerators) Present Status Concepts, strategies, challenges The two players: Dune and Hyper-Kamiokande Conclusions
More informationOak Ridge National Laboratory, TN. K. Scholberg, Duke University On behalf of the COHERENT collaboration August 2, 2017 DPF 2017, Fermilab
Oak Ridge National Laboratory, TN K. Scholberg, Duke University On behalf of the COHERENT collaboration August 2, 2017 DPF 2017, Fermilab Coherent elastic neutrino-nucleus scattering (CEvNS) n + A n +
More informationDouble Chooz and non Asian efforts towards θ 13 Journal of Physics: Conference Series
Double Chooz and non Asian efforts towards θ 13 Journal of Physics: Conference Series Thierry Lasserre 1 CEA/Saclay and Laboratoire Astroparticle & Cosmologie Institut de Recherche des Lois Fondamentales
More informationPoS(ICHEP2016)474. SoLid: Search for Oscillations with a Lithium-6 Detector at the SCK CEN BR2 reactor
SoLid: Search for Oscillations with a Lithium-6 Detector at the SCK CEN BR2 reactor University of Bristol E-mail: dan.saunders@bristol.ac.uk The disappearance of reactor antineutrinos into a new neutral
More informationNEUTRINOS II The Sequel
NEUTRINOS II The Sequel More About Neutrinos Ed Kearns Boston University NEPPSR V - 2006 August 18, 2006 Ed Kearns Boston University NEPPSR 2006 1 There is something unusual about this neutrino talk compared
More informationPROSPECT: Precision Reactor Oscillation and SPECTrum Experiment
PROSPECT: Precision Reactor Oscillation and SPECTrum Experiment Penn Neutrino Seminar November 20, 2015 1 Outline 1. Introduction to neutrinos and neutrino anomalies 2. PROSPECT short baseline reactor
More informationThe Hyper-Kamiodande Project A New Adventure in n Physics
http://hyperk.org The Hyper-Kamiodande Project A New Adventure in n Physics ICNFP2017 Kolymbari, Crete August 26, 17 Alessandro Bravar on behalf of the HK Proto-Collaboration Hyper-K Physics Overview 2
More informationNeutrino Oscillation: Non-Accelerator Experiments
Neutrino Oscillation: Non-Accelerator Experiments Yifang Wang 1 Institute of High Energy Physics Yu-Quan Road 19B, Beijing, 100049, P.R. China E-mail: yfwang@ihep.ac.cn In recent years, major advances
More informationNeutrino Experiments: Lecture 3 M. Shaevitz Columbia University
Neutrino Experiments: Lecture 3 M. Shaevitz Columbia University 1 Outline 2 Lecture 1: Experimental Neutrino Physics Neutrino Physics and Interactions Neutrino Mass Experiments Neutrino Sources/Beams and
More informationPrecise sin 2 2θ 13 measurement by the Daya Bay reactor neutrino experiment.
Proceedings of the DAE Symp. on Nucl. Phys. 57 (2012) 54 Precise sin 2 2θ 13 measurement by the Daya Bay reactor neutrino experiment. M. Gonchar on behalf of Daya Bay Collaboration Joint Institute for
More informationarxiv: v1 [hep-ex] 11 May 2017
LATEST RESULTS FROM TK arxiv:1705.0477v1 [hep-ex] 11 May 017 Marcela Batkiewicz a, for the TK collaboration Institute of Nuclear Physics Polish Academy of Sciences, Cracow, Poland Abstract. The TK (Tokai
More informationNEW νe Appearance Results from the. T2K Experiment. Matthew Malek Imperial College London. University of Birmingham HEP Seminar 13 June 2012
NEW νe Appearance Results from the T2K Experiment Matthew Malek Imperial College London University of Birmingham HEP Seminar 13 June 2012 Outline Physics motivation: Neutrinos & Oscillations Overview of
More informationarxiv: v1 [hep-ex] 1 Dec 2015
Recent Results from the Daya Bay Neutrino Experiment Wei Tang (On behalf of the Daya Bay Collaboration) arxiv:5.00335v [hep-ex] Dec 05 Physics Department, Brookhaven National Laboratory, Upton, New York
More informationMeasurement of q 13. Kwong Lau University of Houston Flavor Physics & CP Violation 2013 (FPCP 2013) Búzios, Rio de Janeiro, Brazil May 22, 2013
Measurement of q 13 Double Chooz RENO Daya Bay Kwong Lau University of Houston Flavor Physics & CP Violation 2013 (FPCP 2013) Búzios, Rio de Janeiro, Brazil May 22, 2013 Disclaimer I am a member of the
More informationThe DAEδALUS at Hyper-K Experiment: Searching for CP Violation. Mike Shaevitz - Columbia University for the DAEδALUS ALUS Collaboration
1 The DAEδALUS at Hyper-K Experiment: Searching for CP Violation Mike Shaevitz - Columbia University for the DAEδALUS ALUS Collaboration DAEδALUS / IsoDAR Program 2 DAEδALUS is a program to develop a new
More informationRecent results on neutrino oscillations and CP violation measurement in Neutrinos
Recent results on neutrino oscillations and CP violation measurement in Neutrinos M.Nakahata Kamioka observatory, ICRR, IPMU, Univ. of Tokyo CP Violation in Elementary Particles and Composite ystems, Feb.19,
More informationEXPLORING PARTICLE-ANTIPARTICLE ASYMMETRY IN NEUTRINO OSCILLATION. Atsuko K. Ichikawa, Kyoto University
EXPLORING PARTICLE-ANTIPARTICLE ASYMMETRY IN NEUTRINO OSCILLATION Atsuko K. Ichikawa, Kyoto University Got PhD by detecting doubly-strange nuclei using emulsion After that, working on accelerator-based
More informationLatest Results of Double Chooz. Stefan Schoppmann for the Double Chooz Collaboration
Latest Results of Double Chooz for the Double Chooz Collaboration Stefan Schoppmann LatestQuarks Results of Leptons Double Chooz The XIIIth International Conference on Heavy and 1/26 May 23, 2016 Outline
More informationNeutron background and possibility for shallow experiments
Neutron background and possibility for shallow experiments Tadao Mitsui Research Center for Neutrino Science, Tohoku University 14-16 December, 2005 Neutrino Sciences 2005, Neutrino Geophysics, Honolulu,
More informationStatus of Light Sterile Neutrinos Carlo Giunti
Status of Light Sterile Neutrinos Carlo Giunti INFN, Torino, Italy EPS-HEP 07 07 European Physical Society Conference on High Energy Physics Venezia, Italy, 5- July 07 C. Giunti Status of Light Sterile
More informationStatus of the Daya Bay Experiment
Status of the Daya Bay Experiment Chao Zhang BNL Heeger, Univ. of Wisconsin NUSS, July 13, 2009 on behalf of the Daya Bay collaboration INFO11, 7/18/2011 Where is Daya Bay? 45 km 55 km 2 Daya Bay Underground
More informationReactor antineutrino. Th. Lasserre Saclay. Neutrino geo-sciences 2010 LNGS, October 06 th 2010
Reactor antineutrino Th. Lasserre Saclay Neutrino geo-sciences 2010 LNGS, October 06 th 2010 Neutrino Mass and Mixing Neutrino: spin ½, neutral, left handed chirality (~helicity), σ~10-43 cm 2 (reactor-ν)
More informationParticle Physics. Michaelmas Term 2009 Prof Mark Thomson. Handout 11 : Neutrino Oscillations. Neutrino Experiments
Particle Physics Michaelmas Term 2009 Prof Mark Thomson Handout 11 : Neutrino Oscillations Prof. M.A. Thomson Michaelmas 2009 340 Neutrino Experiments Before discussing current experimental data, need
More informationNeutrino Oscillations
Neutrino Oscillations Elisa Bernardini Deutsches Elektronen-Synchrotron DESY (Zeuthen) Suggested reading: C. Giunti and C.W. Kim, Fundamentals of Neutrino Physics and Astrophysics, Oxford University Press
More informationNew Results for ν µ ν e oscillations in MINOS
New Results for ν µ ν e oscillations in MINOS Jelena Ilic Rutherford Appleton Lab 4/28/10 RAL PPD Seminar 1 Neutrino Mixing Mass eigenstates flavour eigenstates Maki-Nakagawa-Sakata: Flavour composition
More informationNeutrino Physics with SNO+ Freija Descamps for the SNO+ collaboration
Neutrino Physics with SNO+ Freija Descamps for the SNO+ collaboration NOW 2014, Otranto, Lecce, Italy September 7-14, 2014 Intro Neutrino physics with the SNO+ detector 2 Intro What we know:! Neutrinos
More information