Background Subtraction in Next Generation 0  Experiments Double-Beta Decay Challenges in 0  Decay Detection Benjamin Spaun Whitworth College Advisors:

Slides:

Advertisements

Similar presentations

Dante Nakazawa with Prof. Juan Collar

Advertisements

Measurement of 40 Ar(n,p) reaction and neutron capture on 40 Ar and 136 Xe TUNL and Duke Univ. Megha Bhike and Werner Tornow Duke University and Triangle.

Activity for the Gerda-specific part Description of the Gerda setup including shielding (water tank, Cu tank, liquid Nitrogen), crystals array and kapton.

Status of Ultra-low Energy HPGe Detector for low-mass WIMP search Li Xin (Tsinghua University) KIMS collaboration Oct.22nd, 2005.

The evolution of nuclear structure in light osmium isotopes; gamma ray spectroscopy of 163 Os and 165 Os Mark Drummond.

WP2 Background simulations Outline Execution plan for the third year Progress of the work Activities and news.

GERDA: GERmanium Detector Array

From CUORICINO to CUORE: To probe the inverted hierarchy region On behalf of the CUORE collaboration DUSL Meeting, Washington DC November 2,-4, 2007 Frank.

Daniel Lenz, University of Wisconsin, Madison 11/05/ APS DNP Cryogenic search for neutrinoless double beta decay Daniel Lenz on behalf of the CUORE.

Reaction rates in the Laboratory Example I: 14 N(p,  ) 15 O stable target  can be measured directly: slowest reaction in the CNO cycle  Controls duration.

XXIV WWND South Padre, TX, April 08 W. Bauer Slide 1 Double  Decays, DUSEL, and the Standard Model Wolfgang Bauer Michigan State University.

COBRA Double Beta Decay Experiment D.Y. Stewart, Dr. Y.A. Ramachers, Prof. P.F.Harrison Experimental Particle Physics Group University of Warwick What.

Background Subtraction in Next Generation 0  Experiments Double-Beta Decay Challenges in 0  Decay Detection Small 0νββ decay half-life leads to low.

Massive neutrinos Dirac vs. Majorana

GERmanium Detector Array – a Search for Neutrinoless Double Beta Decay X. Liu - MPI für Physik, München Symposium – symmetries and phases in the universe,

Double-Beta Decay of 96 Zr and Double-Electron Capture of 156 Dy to Excited Final States Sean Finch Thesis Defense March 25, 2015.

Measurements of Neutron Activation of 76 Ge and 136 Xe James Esterline Megha Bhike, Josh Bradt, Brent Fallin, Sean Finch, Matt Gooden, Calvin Howell, John.

Studies of neutron cross-sections by activation method in Nuclear Physics Institute Řež and in The Svedberg Laboratory Uppsala and experimental determination.

Rosen07 Two-Photon Exchange Status Update James Johnson Northwestern University & Argonne National Lab For the Rosen07 Collaboration.

Neutron scattering systems for calibration of dark matter search and low-energy neutrino detectors A.Bondar, A.Buzulutskov, A.Burdakov, E.Grishnjaev, A.Dolgov,

V.L. Kashevarov. Crystal Collaboration Meeting, Mainz, September 2008 Photoproduction of    on protons ► Introduction ► Data analysis.

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.

Ultra-low background HPGe detector at ChyeongPyung Underground Laboratory TaeYeon Kim and KIMS(Korea Invisible Mass Search) Collaboration. * Contents *

NNSA Synergistic Activities at TUNL The Triangle Universities Nuclear Lab is developing excellent facilities for studying (n, xn  ) reactions. Resources.

Measurement of lifetime for muons captured inside nuclei

The Astrophysical 187 Re/ 187 Os Ratio: First Direct Measurement of the 187 Re(n, 2nγ) 186m Re Destruction Cross Section J. H. Kelley, NC State U. and.

Planned Transregional Collaborative Research Center TR27: Neutrinos and Beyond Project A4: Development of segmented germanium detectors for the investigation.

Cross-sections of Neutron Threshold Reactions Studied by Activation Method Nuclear Physics Institute, Academy of Sciences of Czech Republic Department.

Underground Laboratories and Low Background Experiments Pia Loaiza Laboratoire Souterrain de Modane Bordeaux, March 16 th, 2006.

M. Wójcik for the GERDA Collaboration Institute of Physics, Jagellonian University Epiphany 2006, Kraków, Poland, 6-7 January 2006.

Neutrinoless double-beta decay and the SuperNEMO project. Darren Price University of Manchester 24 November, 2004.

Béla Majorovits for the GERDA collaboration ICHEP 2012, Melbourne, Australia, July Béla Majorovits for the GERDA collaboration Status and plans.

Experiment TGV II Multi-detector HPGe telescopic spectrometer for the study of double beta processes of 106 Cd and 48 Ca For TGV collaboration: JINR Dubna,

M. Wójcik Instytut Fizyki, Uniwersytet Jagielloński Instytut Fizyki Doświadczalnej, Uniwersytet Warszawski Warszawa, 10 Marca 2006.

NEMO3 analysis and SuperNEMO development Benjamin Richards D14.

Muon and Neutron Backgrounds at Yangyang underground lab Muju Workshop Kwak, Jungwon Seoul National University 1.External Backgrounds 2.Muon.

BACKGROUND REJECTION AND SENSITIVITY FOR NEW GENERATION Ge DETECTORS EXPERIMENTS. Héctor Gómez Maluenda University of Zaragoza (SPAIN)

Beta decay around 64 Cr GANIL, March 25 th V 63 V 64 V 60 V 61 V 63 Cr 64 Cr 65 Cr 61 Cr 62 Cr 60 Cr 64 Mn 65 Mn 66 Mn 65 Fe 67 Fe 1) 2 + in 64.

NEMO3 experiment: results G. Broudin-Bay LAL (CNRS/ Université Paris-Sud 11) for the NEMO collaboration Moriond EW conference La Thuile, March 2008.

00 Cooler CSB Direct or Extra Photons in d+d  0 Andrew Bacher for the CSB Cooler Collaboration ECT Trento, June 2005.

Activities on double beta decay search experiments in Korea 1.Yangyang Underground laboratory 2.Double beta decay search with HPGe & CsI(Tl) 3.Metal Loaded.

Double Beta Decay Experiments Jeanne Wilson University of Sussex 29/06/05, RAL.

Double β-decay Process mediated by the weak interaction occurring in even-even nuclei where the single  -decay is energetically forbidden The role of.

 0 life time analysis updates, preliminary results from Primex experiment 08/13/2007 I.Larin, Hall-B meeting.

ObservedChannel181Hf180Hf(n,γ)181Hf180mHf180Hf(n,n')180mHf179m2Hf180Hf(n,2n)179m2Hf179Hf(n,n')179m2Hf175Hf176Hf(n,2n)175Hf173Hf174Hf(n,2n)173Hf The Astrophysical.

GERDA – a Search for Neutrinoless Double Beta Decay MPI für Physik, München Neutrinoless double beta decay and the GERDA experimentThe detector array and.

Neutrinoless double electron capture experiment at LSM University of Muenster, Germany (Dieter Frekers et al.) Technical University of Dresden, Germany.

Second Workshop on large TPC for low energy rare event detection, Paris, December 21 st, 2004.

Phase I: Use available 76 Ge diodes from Heidelberg- Moscow and IGEX experiments (~18 kg). Scrutinize with high siginificance current evidence. Phase II:

Summer Student Practice, 2007, JINR Dubna 1 Corelative Gamma Spectroscopy of Neutron-Nucleus Interactions Using the COCOS Setup Students: Jan Žemlička,

48 Ti(n, xnyp  ) reaction cross sections using spallation neutrons for E n = 1 to 20 MeV Excitation functions have been measured for the interaction of.

1 Double Beta Decay of 150 Nd in the NEMO 3 Experiment Nasim Fatemi-Ghomi (On behalf of the NEMO 3 collaboration) The University of Manchester IOP HEPP.

Decay scheme studies using radiochemical methods R. Tripathi, P. K. Pujari Radiochemistry Division A. K. Mohanty Nuclear Physics Division Bhabha Atomic.

Neutron production and iodide transmutation studies using intensive beam of Dubna Phasotron Mitja Majerle Nuclear Physics Institute of CAS Řež, Czech republic.

Analysis of    production ► Data taking ► Reaction identification ► Results for double polarization observable F ► Summary Based on data taken in the.

Double beta decay and Leptogenesis International workshop on double beta decay searches Oct SNU Sin Kyu Kang (Seoul National University of.

Report (2) on JPARC/MLF-12B025 Gd(n,  ) experiment TIT, Jan.13, 2014 For MLF-12B025 Collaboration (Okayama and JAEA): Outline 1.Motivation.

Search for Neutrinoless Double-Beta Decay Werner Tornow Duke University & Triangle Universities Nuclear Laboratory (TUNL) & Kavli-Tokyo Institute of the.

Status of ULE-HPGe Experiment for WIMP Search in YangYang

The COBRA Experiment: Future Prospects

Prompt Gamma Activation Analysis on 76Ge

Triangle Universities Nuclear Laboratory

Precision Measurement of η Radiative Decay Width via Primakoff Effect

Measurement of the 187Re(n,2n)186mRe Destruction Cross Section

Status of Neutron flux Analysis in KIMS experiment

Measurement of the 187Re(n,2n)186mRe Destruction Cross Section

The Astrophysical 187Re/187Os Ratio: First Direct Measurement of the 187Re(n, 2nγ)186mRe Cross Section J. H. Kelley, NC State U. and Triangle Universities.

Triangle Universities Nuclear Laboratory

Neutrino Magnetic Moment : Overview

Kuo-Sheng(國聖) Reactor Neutrino Lab.

Presentation transcript:

Background Subtraction in Next Generation 0  Experiments Double-Beta Decay Challenges in 0  Decay Detection Benjamin Spaun Whitworth College Advisors: W. Tornow Duke University and TUNL A.P. Tonchev Duke University and TUNL Small 0νββ decay half-life leads to low statistics in decay spectrum. Cosmic muons produce underground neutron flux inducing reactions in Pb shielding and Cu in cryo-system:  206Pb has (n,n’γ) transition at 2041 keV.  65Cu has (n,n’γ) transition at 2041keV.  207Pb has (n,n’γ) transition at 3062 keV, which can produce a double escape peak at 2040 keV. Must know partial cross sections of these neutron induced (n,n’γ) transitions in order to subtract these events out of final 0νββ decay spectrum. Cross Section Measurement Setup Experimental Results (A,Z)  (A,Z+2) + 2e - + 2ν (t 1/2 ≈10 20 yrs) (standard ββ decay) (A,Z)  (A,Z+2) + 2e - (t 1/2 ≈10 27 yrs) (theorized neutrinoless ββ decay ) If detected 0νββ decay would indicate: Lepton number can be violated in some nuclear reactions, contrary to Standard Model. The neutrino is its own antiparticle (Marajon particle) An absolute scale for neutrino mass. Mass hierarchy for 3 neutrino flavors (from half-lives). Detection of 0  Decay Setup Tiny reaction half-life, so huge quantities of 76Ge required as well as long decay times. Underground for background reduction Enriched 76 Ge used as source and detector Segmented to incorporate random coincidence events. Continuum: a result of many- body kinematics – electrons and neutrinos share energy. Spike at 2040 keV: a result of neutrino annihilation – electrons carry all of the decay energy. Heidelberg-Moscow experiment claimed to have observed 0νββ peak around 2040 keV in 76Ge. 8 MeV and 12 MeV Neutrons produced at target area 3 HPGe Segmented Clover detectors at 62°, 90°, and 135° Efficiency and energy calibrations with 60 Co, 22 Na, and 226 Ra sources of known intensity. Target runs with Pb and Cu wrapped in Fe foil for cross-section normalization. 400 ns pulsed neutron beam allows for TOF background subtraction. Distinguish between beam related and random coincidence events. Shield veto reduces Compton background. Region of Interest: 2040 keV 2041 keV peak from 206 Pb only showed up in clover keV peak from 65 Cu was not evident above background at either energy. Decay events Energy (keV) Decay events Region of Interest: 3062 keV Measured σ for 207 Pb at 3062 keV 8 MeV (mb)12 MeV (mb) Clover 90°300±4259±13 Clover 135°133±79tba Clover 62°388±51tba Measured σ for 206 Pb at 2041 keV Clover 62°225±49107±19 Partial Cross Sections: Peaks of interest Angular and energy dependence of 3062 keV partial cross-section. Low statistics causes high uncertainty in cross- section measurement. May obscure 0νββ decay 2040 keV region of interest. i.Mary Kidd. Majorana and SEGA. ii.Dr. Henning Back (SEGA information) iii.Dongming Mei. Backgrounds in the Next Generation Double-Beta Decay Experiments. Los Alamos National lab. iv.J. Edward Ellis. PNNL Majorana Information Resource Page.. 7 July v.1H.V. Klapdor-Kleingrothaus et al., Phys. Lett. B 586 (2004) 198. References 3062 keV peak from 207Pb evident in most clovers at both energies S egmented Enriched Germanium Assembly keV 40 K (background) Beam related events Energy (keV) Decay events Time (ns)