Erice, 20.9.2009Kai Zuber1 Status of the COBRA Experiment K. Zuber, TU Dresden.

Slides:

Advertisements

Similar presentations

COBRA A new Approach to -Decay UK HEP Forum, Abingdon, May 11 th, 2003 Daniel Muenstermann University of Dortmund COBRA.

Advertisements

The SNO+ Experiment: Overview and Status

Double beta decay and astroparticle projects in IEAP CTU (NuPECC, Prague, 2011) List of projects: 1) TGV experiment – measurement of 2 EC/EC decay of 106.

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

K. Zuber, Uni. Sussex IDEA Meeting, Milano 9. Nov Status of COBRA.

COBRA Kai Zuber University of Sussex 5 th SNOLAB Workshop,

Search for spontaneous muon emission from lead nuclei with OPERA bricks M. Giorgini, V. Popa Bologna Group OPERA Collaboration Meeting, LNGS, 19-22/05/2003.

Status of COBRA K. Zuber, Univ. of Sussex Blaubeuren, July 2007.

DBD matrix elements Welcome and aim of the workshop Experimental situation Outcome.

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.

No s is good s Sheffield Physoc 21/04/2005 Jeanne Wilson A historical introduction to neutrinoless double beta decay.

The COBRA Double Beta Decay Search Experiment

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

Potassium Geo-neutrino Detection Mark Chen Queen’s University Neutrino Geophysics, Honolulu, Hawaii December 15, 2005.

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

Search for  + EC and ECEC processes in 112 Sn A.S. Barabash 1), Ph. Hubert 2), A. Nachab 2) and V. Umatov 1) 1) ITEP, Moscow, Russia 2) CNBG, Gradignan,

Contents Lecture 1 General introduction What is measured in DBD ? Neutrino oscillations and DBD Other BSM physics and DBD Nuclear matrix elements Lecture.

Double beta decay Ruben Saakyan UCL 25 March 2004.

CUORICINO and CUORE Chiara Brofferio Università di Milano – Bicocca and INFN, Sez. di Milano NOW 2004 – Otranto 12 – 17 September 2004 On behalf of the.

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

1 TCP06 Parksville 8/5/06 Electron capture branching ratios for the nuclear matrix elements in double-beta decay using TITAN ◆ Nuclear matrix elements.

FIRST RESULTS OF THE NEMO 3 EXPERIMENT Laurent SIMARD LAL Orsay (France) HEP-EPS 2003 conference CENBG, IN2P3-CNRS et Université de Bordeaux, France CFR,

CRESST Cryogenic Rare Event Search with Superconducting Thermometers Max-Planck-Institut für Physik University of Oxford Technische Universität München.

Status of COBRA 6 th SNOLAB Workshop, Picture courtesy

Stefano Pirro, IDEA Meeting -Zaragoza November 7, Nd Project High Temperature Thermistors News about NdGaO 3 Scintillating Bolometers Conclusions.

THE CUORE EXPERIMENT: A SEARCH FOR NEUTRINOLESS DOUBLE BETA DECAY Marco Andrea Carrettoni on behalf of the CUORE collaboration 2 nd International Conference.

Present status of CUORE / CUORICINO Andrea Giuliani Università dell’Insubria and INFN Milano 3rd IDEA meeting, Orsay, April 14 – 15, 2005.

Neutron Monitoring Detector in KIMS Jungwon Kwak Seoul National University 2003 October 25 th KPS meeting.

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

Operation of bare Ge-diodes in LN/LAr 1 st IDEA meeting Como, April 8 (2004) Stefan Schoenert.

Upgrade and progess on the COBRA double beta detector Sudbury, 26. August 2010 Kai Zuber.

ILIASN4 Cascina, November 3rd, 2005Dominique Lalanne.

May 6, 2006Henderson Dusel Capstone Meeting Low Background Counting A Facility Wish List for the New Underground Laboratory F. Calaprice.

C.Vigorito, University & INFN Torino, Italy 30 th International Cosmic Ray Conference Merida, Mexico Search for neutrino bursts from Gravitational stellar.

1 IDM2004 Edinburgh, 9 september 2004 Helenia Menghetti Bologna University and INFN Study of the muon-induced neutron background with the LVD detector.

The CUORE experiment Thomas Bloxham Lawrence Berkeley National Lab PHENO 2011 May 9th 2011.

Search for double electron capture in 106 Cd using HPGe detectors and Si pixel detectors Ivan Štekl for TGV collaboration Institute of Experimental and.

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

Welcome talk IDEA meeting, Prague, MEDEX workshop news 2.Present status of the TGV II 3.Organization remarks I.Štekl Institute of experimental.

22 September 2005 Haw05 1  (1405) photoproduction at SPring-8/LEPS H. Fujimura, Kyoto University Kyoto University, Japan K. Imai, M. Niiyama Research.

Half Day IoP Meeting: Neutrinoless Double Beta Decay, University College London, Great Britain The GERDA Experiment at Gran Sasso Grzegorz Zuzel.

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,

Nd double beta decay search with SNO+ K. Zuber, on behalf of the SNO+ collaboration.

Position sensitive CZT detectors for the COBRA neutrinoless double beta decay project Brian Fulton University of York Neutrinoless double beta decay The.

Cracow Epiphany Conference on Physics in Underground Laboratories and its Connection with LHC Cracow, Poland The GERDA Experiment at Gran.

Present and future activities in LSM (2 nd LSM Extension WORKSHOP, Oct.16, 2009) (1) TGV experiment – measurement of 2 EC/EC decay of 106 Cd (2) R&D of.

K. Zuber, Uni. Sussex Status of COBRA IDEA Meeting, Zaragoza 7 Nov

28 May 2008NEMO-3 Neutrino081 NEMO-3 A search for double beta decay Robert L. Flack University College London On behalf of the NEMO-3 collaboration.

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

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.

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

Search for double electron capture in 106 Cd using HPGe detectors and Si pixel detectors Ivan Štekl for TGV collaboration Institute of Experimental and.

The COBRA Experiment Jeanne Wilson University of Sussex, UK On behalf of the COBRA Collaboration TAUP 2007, Sendai, Japan.

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:

Nasim Fatemi-Ghomi, Group Christmass Meeting December Nasim Fatemi-Ghomi Double Beta Decay Study of 150 Nd at NEMO3 (The magic isotope!!)

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.

COBRA – CZT detectors for neutrinoless double beta decay measurements Martin Freer, University of Birmingham.

Search for Neutrinoless Double Beta Decay with NEMO-3 Zornitza Daraktchieva University College London On behalf of the NEMO3 collaboration PANIC08, Eilat,

Cosmic muon signal and its seasonal modulation at Gran Sasso with the Borexino detector Davide D’Angelo for the Borexino Collaboration Università degli.

Neutrinoless double beta decay (0  ) CdTe Semico nductor Band gap (eV) Electron mobility (cm 2 /V/s) Hole mobility (cm 2 /V/s) Density (g/cm 3.

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

The COBRA Experiment: Future Prospects

Status of Neutron flux Analysis in KIMS experiment

Davide Franco for the Borexino Collaboration Milano University & INFN

Presentation transcript:

Erice, Kai Zuber1 Status of the COBRA Experiment K. Zuber, TU Dresden

Erice, Kai Zuber2 Contents General introduction Low background issues Pixel activities Summary and Outlook

Erice, Kai Zuber3 COBRA Use large amount of CdZnTe Semiconductor Detectors large array of CdZnTe detectors K. Zuber, Phys. Lett. B 519,1 (2001)

Erice, Kai Zuber4 COBRA collaboration Supporting institutes: Jagellonian University (Poland), Los Alamos Nat. Lab. (USA) TU Dresden TU Dortmund Laboratori Nazionali del Gran Sasso University of Bratislava Washington University at St. Louis Mat. Res. Centre Freiburg University of Erlangen University of Hamburg More welcome University of Jyvaskyla University of La Plata Czech Technical University Prague JINR Dubna

Erice, Kai Zuber5 Isotopes nat. ab. (%) Q (keV)Decay mode

Erice, Kai Zuber6 Advantages source = detector semiconductor (good energy resolution, clean) room temperature tracking („Solid state TPC“) modular design (coincidences) industrial development of CdTe detectors two isotopes at once 116 Cd above MeV

Erice, Kai Zuber7 Background COBRA beyond MeV background a priori much lower S. Pirro, Milano

Erice, Kai Zuber8 It‘s all about background 1024 pixel, pixel size: 625  m Background from: natural radioactivity, cosmogenic produced radioisotopes, cosmic rays, neutrons energy measurement only energy measurement and tracking two options

Erice, Kai Zuber9 Gran Sasso (Italy) COBRAGERDA CUORE It‘s all about background reduction

Erice, Kai Zuber10 COBRA Set-up at LNGS Designed for 64 detectors (at hand)

Erice, Kai Zuber11 Results: Cd-113 We have more than 10 independent measurements now... first time theoretical model based on nuclear structure calculation (thanks to J. Suhonen) 4-fold non-unique beta decay (1/2 +  9/2 + ) first time histogram of yrs half-life measurements Q-value: J. V. Dawson et al., Nucl. Phys. A 818,264 (2009) Spectral shape fits better with unique 3-fold forbidden than non-unique transition

Erice, Kai Zuber12 Results: 0νDBD based on 18 kg days of data, J.V. Dawson et al., Phys. Rev. C 80, (2009) six half-life limits above years, one world best, six limits within factor 3 of world best, coincidence analysis ongoing

Erice, Kai Zuber13 Current status Background at 2.8 MeV around 5 counts/keV/kg/yr still options to improve Data taking with red crystals finished, now running 4 (8) clear painted detectors in a nitrogen atmosphere Cd-116 peak range Major background: Red paint and radon in the air

Erice, Kai Zuber14 The solid state TPC energy resolution tracking pixelated CdZnTe detectors massive background reduction positive signal identification Semiconductor Tracker

Erice, Kai Zuber15 Pixelisation 0   1-1.5mm ~15  m 3 MeV  7.7MeV  life-time =  s Beta with endpoint 3.3MeV  = 1 pixel,  and  = several connected pixel,  = some disconnected p. idea: massive background reduction by particle identification

Erice, Kai Zuber16 Pixel detectors Pixel detector with 200  m pixels (10000 pixel) produced! 1024 pixel, pixel size: 625  m two options: Timepix, CZT ASICs

Erice, Kai Zuber17 Option 1: ASICs for CZT Detectors: 2x2x0.5 cm 3 One 32x32 pixels sent for bonding to 1024 channel ASIC Second one 55x55 pixels sent for bonding to 2048 channel ASIC 64 pixel detectors Installation at LNGS winter 2009

Erice, Kai Zuber18 Option 2: Timepix Medipix2 coll. Timepix Si, 300 μ m thick (data shown) TimePix CdTe detector 1mm thick  Both systems 256x256 Pixel, 55 μ m pitch, 1.4x1.4 cm 2 1mm Myon candidate

Erice, Kai Zuber19 snapshot Bi alpha-beta coincidence candidate Unfortunately I can‘t show you a double beta event...

Erice, Kai Zuber20 Event pool surface-u/g It reacts on environment, ie. not completely dominated by internal background

Erice, Kai Zuber21 Particles.... Alphas Betas Muons

Erice, Kai Zuber22 A nice muon...

Erice, Kai Zuber23 Nobody said it was going to be easy, and nobody was right. George W. Bush Yes we can! B. Obama

Erice, Kai Zuber24 Needed Sensitivity 50 meV

Erice, Kai Zuber25 KING COBRA - Below 50 meV 116 Cd 116 In 116 Sn A real time low-energy solar neutrino and Supernova experiment? Threshold energy: 464 keV 7 Be contribution g.s. alone: 227 SNU  = 14s K. Zuber, Phys. Lett. B 571,148 (2003) K Balasi, P. Divari, T.Kosmas, J. Suhonen, E. Ydrefors,K. Zuber, in prep. e e e Current idea: 40x40x40 CdZnTe detectors = 420 kg, enriched in 116 Cd Down to 10 meV you might be...

Erice, Kai Zuber26 Summary COBRA is a rather new approach making use of CZT room temperature semiconductors. First background sources have been identified and removed, working towards larger array (64), lower background. Major upgrade spring in The solid state TPC (semiconductor tracker) can be the major and unique step forward. First underground data taken.

Erice, Kai Zuber27