L. Oberauer, Paris, June 2004   Measurements at Reactors Neutrino 2004 CdF, Paris, June 2004...chasing the missing mixing angle.

Slides:

Advertisements

Similar presentations

Overview for an European Strategy for neutrino Physics Yves Déclais CNRS/IN2P3/UCBL IPN Lyon Measuring the neutrino mixing matrix Reactor experiments NUMI.

Advertisements

Controlling Systematics in a Future Reactor  13 Experiment Jonathan Link Columbia University Workshop on Future Low-Energy Neutrino Experiments April.

Heeger theta13, May A Neutrino Project at Diablo Canyon.

Stokstad, Heeger NSD, May 1, 2003 Reactor Neutrino Measurement of  13 Measuring the Last Undetermined Neutrino Mixing Angle  13 Searching for Subdominant.

6/6/2003Jonathan Link, Columbia U. NuFact03 Future Measurement of sin 2 2  13 at Nuclear Reactors Jonathan Link Columbia University June 6, 2003 ′03.

Summary of Nufact-03 Alain Blondel NuFact 03 5th International Workshop on Neutrino Factories & Superbeams Columbia University, New York 5-11 June 2003.

Sensitivity of the DANSS detector to short range neutrino oscillations

Past Experience of reactor neutrino experiments Yifang Wang Institute of High Energy Physics, Beijing Nov. 28, 2003.

Cosmic Induced Backgrounds D. Reyna Argonne National Lab.

Neutrino Physics - Lecture 6 Steve Elliott LANL Staff Member UNM Adjunct Professor ,

Experimental Status of Geo-reactor Search with KamLAND Detector

Reactor & Accelerator Thanks to Bob McKeown for many of the slides.

21-25 January 2002 WIN 2002 Colin Okada, LBNL for the SNO Collaboration What Else Can SNO Do? Muons and Atmospheric Neutrinos Supernovae Anti-Neutrinos.

Summary of Nufact-03 Alain Blondel NuFact 03 5th International Workshop on Neutrino Factories & Superbeams Columbia University, New York 5-11 June 2003.

12 December 2003APS Neutrino StudyE. Blucher APS Neutrino Study: Reactor Working Group What can we learn from reactor experiments? Future reactor experiments.

Measuring  13 with Reactors Stuart Freedman University of California at Berkeley SLAC Seminar September 29, 2003.

1 The Daya Bay Reactor Electron Anti-neutrino Oscillation Experiment Jianglai Liu (for the Daya Bay Collaboration) California Institute of Technology APS.

Jun Cao Institute of High Energy Physics, Beijing Daya Bay Neutrino Experiment 3rd International Conference on Flavor Physics, Oct. 3-8, 2005 National.

Reactor Neutrino Experiments Jun Cao Institute of High Energy Physics Lepton-Photon 2007, Daegu, Aug , 2007.

Caren Hagner CSTS Saclay Present And Near Future of θ 13 & CPV in Neutrino Experiments Caren Hagner Universität Hamburg Neutrino Mixing and.

Eun-Ju Jeon Sejong Univ. Sept. 09, 2010 Status of RENO Experiment Neutrino Oscillation Workshop (NOW 2010) September 4-11, 2010, Otranto, Lecce, Italy.

Double Chooz ＡＲｅａｃｔｏｒ θ 13 Ｅｘｐｅｒｉｍｅｎｔ M.Motoki Tohoku Univ. On behalf of the Double Chooz Collaboration Reactor θ １３ measurementReactor θ １３ measurement.

Measuring sin 2 2  13 at the Daya Bay Reactor Neutrino Experiment Christopher Mauger (for the Daya Bay Collaboration) W. K. Kellogg Radiation Laboratory.

KamLAND : Studying Neutrinos from Reactor Atsuto Suzuki KamLAND Collaboration KEK : High Energy Accelerator Research Organization.

Using Reactor Neutrinos to Study Neutrino Oscillations Jonathan Link Columbia University Heavy Quarks and Leptons 2004 Heavy Quarks and Leptons 2004 June.

Using Reactor Anti-Neutrinos to Measure sin 2 2θ 13 Jonathan Link Columbia University Fermilab Long Range Planning Committee, Neutrino Session November.

1 Antineutrino Detector of Dayabay Reactor Neutrino Experiment Yuekun Heng, IHEP, Beijing On Behalf of the DayaBay Collaboration.

RENO and the Last Result

Karsten M. Heeger US Reactor  13 Meeting, March 15, 2004 Comparison of Reactor Sites and  13 Experiments Karsten Heeger LBNL.

νeνe νeνe νeνe νeνe νeνe νeνe Distance (L/E) Probability ν e 1.0 ~1800 meters 3 MeV) Reactor Oscillation Experiment Basics Unoscillated flux observed.

Karsten Heeger, Univ. of WisconsinDNP2006, Nashville, October 28, 2006 A High-Precision Measurement of sin 2 2  13 with the Daya Bay Reactor Antineutrino.

Present and future detectors for Geo-neutrinos: Borexino and LENA Applied Antineutrino Physics Workshop APC, Paris, Dec L. Oberauer, TU München.

Kr2Det: TWO - DETECTOR REACTOR NEUTRINO OSCILLATION EXPERIMENT AT KRASNOYARSK UNDERGROUND SITE L. Mikaelyan for KURCHATOV INSTITUTE NEUTRINO GROUP.

Efforts in Russia V. Sinev Kurchatov Institute. Plan of talk Rovno experiments at th On the determination of the reactor fuel isotopic content by.

Karsten Heeger, LBNL TAUP03, September 7, 2003 Reactor Neutrino Measurement of  13 Karsten M. Heeger Lawrence Berkeley National Laboratory.

Double-Chooz A search for  13 Guillaume MENTION (PCC-Collège de France/APC) On behalf of the Double-Chooz collaboration NOW 2004 Conca Specchiulla, Italy.

Results for the Neutrino Mixing Angle  13 from RENO International School of Nuclear Physics, 35 th Course Neutrino Physics: Present and Future, Erice/Sicily,

Karsten Heeger, LBNL NDM03, June 11, 2003 Future Reactor Neutrino Experiments Novel Neutrino Oscillation Experiments for Measuring the Last Undetermined.

Past Reactor Experiments (Some Lessons From History)

The Daya Bay Reactor Neutrino Experiment R. D. McKeown Caltech On Behalf of the Daya Bay Collaboration CIPANP 2009.

Search for  13 at Daya Bay On behalf of the Daya Bay Collaboration Deb Mohapatra Virginia Tech.

Karsten Heeger, Univ. of WisconsinAPS April Meeting, Jacksonville, April 16, 2007 Search for the Neutrino Mixing Angle  13 with non-accelerator experiments.

Chasing  13 with new experiments at nuclear reactors Thierry Lasserre Saclay NuFact04, Osaka July

Karsten Heeger Beijing, January 18, 2003 Design Considerations for a  13 Reactor Neutrino Experiment with Multiple Detectors Karsten M. Heeger Lawrence.

Double Chooz Near Detector Guillaume MENTION CEA Saclay, DAPNIA/SPP Workshop AAP 2007 Friday, December 14 th, 2007

Karsten Heeger, LBNL INPAC, October 3, 2003 Reactor Neutrino Oscillation Experiments Karsten M. Heeger Lawrence Berkeley National Laboratory.

Summary of the Reactor/  13 Meeting At College de France, Paris April 22-23, 2003 Thierry Lasserre On Behalf the reactor/  13 “european” working group.

Daya Bay Reactor Neutrino Experiment On behalf of the DayaBay collaboration Virginia Polytechnic Institute and State University Joseph ykHor YuenKeung,

Measuring  13 with Reactors Stuart Freedman HEPAP July 24, 2003 Bethesda Reactor Detector 1Detector 2 d2d2 d1d1.

Summary of the workshop on Future Low-Energy Neutrino Experiments TUM, Munich, October 9-11, 2003 Thierry Lasserre CEA/Saclay, CERN, 20/11/2003.

6 January 2004EFI Faculty Lunch Future Neutrino Oscillation Experiments Neutrino oscillations, CP violation, and importance of  13 Accelerator vs. reactor.

Θ 13 and CP-Violation in the Lepton Sector SEESAW25 Institut Henri Poincaré, Paris Caren Hagner Universität Hamburg SEESAW25 Institut Henri Poincaré, Paris.

1 Muon Veto System and Expected Backgrounds at Dayabay Hongshan (Kevin) Zhang, BNL DayaBay Collaboration DNP08, Oakland.

  Measurement with Double Chooz IDM chasing the missing mixing angle e  x.

Recent Results from RENO NUFACT2014 August. 25 to 30, 2014, Glasgow, Scotland, U.K. Hyunkwan Seo on behalf of the RENO Collaboration Seoul National University.

CHOOZ  Double Chooz réalité  mythe ? Yves Déclais, IPNL (CNRS-IN2P3/UCBL) Questions (sur le bruit) de fond.

Double Chooz Optimizing Chooz for a possible Theta 13 measurement Steven Dazeley (Louisiana State University) NuFact05 Rome.

1 Work report ( ) Haoqi Lu IHEP Neutrino group

1 Daya Bay Reactor Neutrino Oscillation Experiment Jen-Chieh Peng International Workshop on “Double Beta Decay and Neutrinos” Osaka, Japan, June 11-13,

NWG Presentation Heeger, Freedman, Kadel, Luk LBNL, April 11, 2003 Reactor Neutrino Measurement of  13 Searching for Subdominant Oscillations in e  ,

Results on  13 Neutrino Oscillations from Reactor Experiments Soo-Bong Kim (KNRC, Seoul National University) “INPC 2013, Firenze, June 2-7, 2013”

Double Chooz Experiment Status Jelena Maricic, Drexel University (for the Double Chooz Collaboration) September, 27 th, SNAC11.

The Double Chooz reactor neutrino experiment

NEUTRINO OSCILLATION MEASUREMENTS WITH REACTORS

Donato Nicolo` Pisa University & INFN,Pisa

How precisely do we know the antineutrino source spectrum from a nuclear reactor? Klaus Schreckenbach (TU München) Klaus Schreckenbach.

The Braidwood Reactor Neutrino Experiment

Current Results from Reactor Neutrino Experiments

Daya Bay Neutrino Experiment

Daya Bay Neutrino Experiment

Presentation transcript:

L. Oberauer, Paris, June 2004   Measurements at Reactors Neutrino 2004 CdF, Paris, June chasing the missing mixing angle

e   x Why reactors? The actual best limit is coming from a reactor experiment ! Chooz, Paolo Verde sin 2 2   m 2 = eV 2

L. Oberauer, Paris, June 2004 Experimental method Nuclear reactors are a powerful source of low energy (up to ~ 8 MeV) electron anti-neutrinos Detection via inverse beta decay: Q-value ~ 1.8 MeV E  ~ E e - Q ( spectroscopy) suppress background via use delayed coincidence method

L. Oberauer, Paris, June 2004 How to improve the sensitivity? The problem: Reactor exp. = Disappearance exp. compare total flux (and spectrum) with the no- oscillation hypothesis one depends on systematic uncertainties, like: absolute source strength, cross section, detection efficiency, fuel development over time...

L. Oberauer, Paris, June 2004 The basic idea: Use 2 identical detectors oscillation frequency basically known L/2 ~ 1.0 km km choose the right distance for the signal with the far detector monitor the reactor with the close detector (100m) (cancels also uncertainties like cross section, efficiencies etc.)  m 2 = ( ) eV 2 osc.length L

L. Oberauer, Paris, June 2004 The aims: Statistics N(far) ~ energy uncertainty  (E) < 1% normalization uncertainty  rel < 1% number of target protons efficiencies (positron, neutron)  rel excellent calibrations required...

L. Oberauer, Paris, June 2004 Additional uncertainties: shape (~ 2%) cross section (~ 1.9%) should cancel ! fuel composition ( 235 U, 238 U, 239 Pu, 241 Pu) should cancel ! Bugey; comparison with spectrum deconvoluted from exp. determined beta spetra Feilitzsch, Schreckenbach; used for analysis of the Gösgen experiment

Background? accidental background determine online not critical radiopurity experiencies from CTF, Chooz, KamLAND correlated background (muon induced) fast neutrons beta - neutron cascades in Chooz signal/background ~ 25 -> 100 (aim) backgrounds in both detectors identical ??

L. Oberauer, Paris, June 2004 Sensitivity ? around few for sin 2 2  after ~3 years (20t, 8GW) impact of systematics fairly modest Huber, Lindner, Schwetz & Winter: hep-ph/

L. Oberauer, Paris, June 2004 Approach towards an experiment... 3 workshops on „Future Low Energy -Experiments“ spring 2003 Alabama, USA fall 2003 Munich, Germany spring 2004 Niigata, Japan White paper thanks to Maury Goodman. paper available hep-ex/ (or

L. Oberauer, Paris, June 2004 Daya Bay

L. Oberauer, Paris, June 2004 Requirements: Strong power plant Shielding (300m.w.e. or better) for at least the far detector Only one (or two) cores (=sources) preferred Support from the power plant responsibles

L. Oberauer, Paris, June 2004 Sites under discussion: ANGRA, Brazil (reactor II) BRAIDWOOD, BYRON, LA SALLE, Illinois, USA CHOOZ, France DAYA BAY, China DIABLO CANYON, California, USA KASHIWAWASAKI, KARIWA, Japan KRASNOYARSK, Russia (first proposal)

L. Oberauer, Paris, June 2004 The Diablo Canyon site (USA) Close to San Francisco (500 km), California Two cores (2 x 3.1 GW th ) D 1 ~ 0.5 – 1 km & D 2 ~ 1.5 – 3 km Overburden: horizontal tunnel  800 mwe  Leader Group : Berkeley LBL

L. Oberauer, Paris, June 2004 The Diablo Canyon site (USA) Close to San Francisco (500 km), California Two cores (2 x 3.1 GW th ) D 1 ~ 0.5 – 1 km & D 2 ~ 1.5 – 3 km Overburden: horizontal tunnel  800 mwe  Leader Group : Berkeley LBL

L. Oberauer, Paris, June 2004 Scheme of one shaft The Kashiwasaki site (Japan)  Kashiwasaki power plant : 24.3 GW th  7 cores  2 near detectors needed !  R&D budget approved  3 identical detector of ~8 tons  shielding mwe  Data taking ~ 2008 Sensitivity (3 years): sin 2 (2  13 C.L

L. Oberauer, Paris, June even SuperK was proposed (Kornoukhov, Starostin) (Phys. Of Atom. Nucl., Vol. 67, 4, (2004) 672)...with a near detector (KamLAND size) and a russian type 300 MW reactor !

L. Oberauer, Paris, June 2004 Letter of Intent: Double-Chooz d~1.05 km P~8.4 GW 300mwe far detector no excavation for far detector

L. Oberauer, Paris, June 2004

Chooz (site of far detector)

Detector design, Double-Chooz -target Gd- scintillator  -catcher, scintillator buffer, non- scintillating Muon Veto, scintillator 2.4m 3.6m 5.5m 6.7m ) ) ) ) ) ) PMs 2.8m

Sensitivity ? sensitivity between 0.02 and 0.03 for sin 2 2  after ~3 years (for  m 2 = eV 2 ) P. Huber et al. hep-ph/ Poster: G. Mention, systematics and sensitivities for Double-Chooz

L. Oberauer, Paris, June 2004 Comparison to LBL-projects? P. Huber et al. hep-ph/ D-Chooz: funding French side M€ approved Aim for start data taking ~ 2008

L. Oberauer, Paris, June 2004 Background studies for Double-Chooz Correlated background events: Monte-Carlo simulation of fast neutrons, generated by cosmic muons first check: simulation of the old Chooz experiment MC - result: 0.8 < bg/day < 4.5 (limited by statistics) Exp. - result: bg = 1.1 / day MC reliable !

L. Oberauer, Paris, June 2004 Background spectrum Double- Chooz Neutron spectrum - veto offNeutron spectrum - veto on Shielding 100mwe, t = 33.7 h 1 background event preliminary

L. Oberauer, Paris, June 2004 Background Double-Chooz expected rate far detector (300mwe) ~ 0.15 / day (lower than 0.3 / day at 90% cl) signal / background far det. > 100 expected rate close detector (60mwe) ~ 2 / day signal / background close det. > 500 (if distance is ~ 150m) spectral shape of background quite flat (unequal to signal spectrum)

L. Oberauer, Paris, June 2004 Example: beta-n from 8 He (generated by cosmic muon on 12 C in organic liquid scintillator) monitor 8He rate by special beta - alpha delayed coincidence data from other candidates ( 9 Li) available from T. Hagner et al. (muon SPS, CERN), Chooz, CTF, KamLAND Beta - neutron cascades

L. Oberauer, Paris, June 2004 Spectral information ? Y(‚close‘) - Y(‚far‘) ~ 3.5 years sin 2 2   m 2 = eV 2 very valuable cross- check if one obeserves an effect in the total rates !

L. Oberauer, Paris, June 2004 Conclusions Search for  13 with a new reactor experiment is very promising „next future“ experiments Large expertise available from low energy, low background projects (Chooz, CTF/Borexino, KamLAND) White paper available LOI for a new Double-Chooz, France Poster, A. Ianni, CTF & M. Göger, LENA