EDELWEISS-I last results EDELWEISS-II prospects for dark matter direct detection CEA-Saclay DAPNIA and DRECAM CRTBT Grenoble CSNSM Orsay IAP Paris IPN.

Slides:



Advertisements
Similar presentations
Edelweiss-II : status and first results A new generation of background-free bolometers for WIMP search X-F. Navick - CEA Saclay, IRFU, France LTD13 – Stanford.
Advertisements

Status of XMASS experiment Shigetaka Moriyama Institute for Cosmic Ray Research, University of Tokyo For the XMASS collaboration September 10 th, 2013.
Dark Matter search with EDELWEISS and beyond Gilles Gerbier CEA Saclay – IRFU Rencontres de Moriond- VHEPU march 15 th Expérience pour DEtecter.
Henrique Araújo Imperial College London on behalf of ZEPLIN-III Collaboration: Edinburgh University (UK), Imperial College London (UK), ITEP-Moscow (Russia),
The PICASSO experiment - searching for cold dark matter
Readout System for the Edelweiss Dark Matter search
KIT – Universität des Landes Baden-Württemberg und nationales Forschungszentrum in der Helmholtz-Gemeinschaft Benjamin Schmidt, IEKP, KIT Campus North,
Direct search for Dark Matter with the EDELWEISS-II experiment: status and results Claudia Nones CSNSM-Orsay On behalf of the EDELWEISS-II collaboration.
R. Lemrani CEA Saclay Search for Dark Matter with EDELWEISS Status and future NDM ’06 Paris, September 3-9, 2006.
Possible merits of high pressure Xe gas for dark matter detection C J Martoff (Temple) & P F Smith (RAL, Temple) most dark matter experiments use cryogenic.
Dark Matter Overview Harry Nelson UCSB INPAC Oct. 4, 2003.
1 Edelweiss-II status Eric Armengaud (CEA), for the Edelweiss Collaboration Axion-WIMPs training workshop, Patras, 22/06/2007.
The XENON Project A 1 tonne Liquid Xenon experiment for a sensitive Dark Matter Search Elena Aprile Columbia University.
Present and Future Cryogenic Dark Matter Search in Europe Wolfgang Rau, Technische Universität München CRESSTCRESST EURECA ryogenic are vent earch with.
PANDAX Results and Outlook
12/9/04KICP - Spin Dependent Limits 1 Can WIMP Spin Dependent Couplings explain DAMA? Limits from DAMA and Other Experiments Christopher M. Savage University.
Proportional Light in a Dual Phase Xenon Chamber
30 Ge & Si Crystals Arranged in verticals stacks of 6 called “towers” Shielding composed of lead, poly, and a muon veto not described. 7.6 cm diameter.
1 Low radioactivity issues in EDELWEISS-II Low Radioactivity Techniques, LRT 2010 Sudbury, August 2010 Pia Loaiza, Laboratoire Souterrain de Modane,
ZEPLIN II Status & ZEPLIN IV Muzaffer Atac David Cline Youngho Seo Franco Sergiampietri Hanguo Wang ULCA ZonEd Proportional scintillation in LIquid Noble.
EDELWEISS-II : Status and future
Dan Bauer Fermilab Users Meeting June 3, 2004 Status of Cold Dark Matter Searches Dan Bauer, Fermilab Introduction Scientific case compelling for cold.
T. Frank for the CRESST collaboration Laboratori Nazionali del Gran Sasso C. Bucci Max-Planck-Institut für Physik M. Altmann, M. Bruckmayer, C. Cozzini,
CRESST Cryogenic Rare Event Search with Superconducting Thermometers Max-Planck-Institut für Physik University of Oxford Technische Universität München.
TAUP2007, Sendai, 12/09/2007 Vitaly Kudryavtsev 1 Limits on WIMP nuclear recoils from ZEPLIN-II data Vitaly A. Kudryavtsev Department of Physics and Astronomy.
Direct Dark Matter Searches
Cryogenic particle detection at the Canfranc Underground Laboratory First International Workshop for the Design of the ANDES Underground Laboratory Centro.
From CDMSII to SuperCDMS Nader Mirabolfathi UC Berkeley INPAC meeting, May 2007, Berkeley (Marina) CDMSII : Current Status CDMSII Perspective Motivation.
Surface events suppression in the germanium bolometers EDELWEISS experiment Xavier-François Navick (CEA Dapnia) TAUP Sendai September 07.
CDMS IIUCSB Direct Dark Matter Detection CDMS, ZEPLIN, DRIFT (Edelweiss) ICHEP 31 Amsterdam July 26, 2002 Harry Nelson Santa Barbara.
Dark Matter Search with SuperCDMS Results, Status and Future Wolfgang Rau Queen’s University.
SuperCDMS From Soudan to SNOLAB Wolfgang Rau Queen’s University.
A Study of Background Particles for the Implementation of a Neutron Veto into SuperCDMS Johanna-Laina Fischer 1, Dr. Lauren Hsu 2 1 Physics and Space Sciences.
Cosmo02, Chicago september 2002 Maryvonne De Jésus 1 DARK-MATTER Direct Detection Maryvonne De Jésus IPN-Lyon/CNRS France
HEP-Aachen/16-24 July 2003 L.Chabert IPNL Latest results ot the EDELWEISS experiment : L.Chabert Institut de Physique Nucléaire de Lyon ● CEA-Saclay DAPNIA/DRECAM.
The European Future of Dark Matter Searches with Cryogenic Detectors H Kraus University of Oxford EURECA.
Michael Unrau, Institut für Kernphysik Analyse von Bolometersignalen der EDELWEISS Dark Matter Suche EDELWEISS dark matter searchFull InterDigitized detector.
The Tokyo Dark Matter Experiment NDM03 13 Jun. 2003, Nara Hiroyuki Sekiya University of Tokyo.
Underground Laboratories and Low Background Experiments Pia Loaiza Laboratoire Souterrain de Modane Bordeaux, March 16 th, 2006.
Min Kyu Lee ( 이민규 ) Kyoung Beom Lee ( 이경범 ) Yong-Hamb Kim ( 김용함 ) Low Temperature Detectors 2006 Workshop on the Underground Experiment at Yangyang TEXONO-KIMS.
The EDELWEISS-II experiment Silvia SCORZA Université Claude Bernard- Institut de Physique nucléaire de Lyon CEA-Saclay DAPNIA/DRECAM (FRANCE), CNRS/CRTBT.
Véronique SANGLARD Université de Lyon, UCBL1 CNRS/IN2P3/IPNLyon Status of EDELWEISS-II.
Physics at Extreme Energies, Hanoi, July 2000 Dark Matter Search in the EDELWEISS expt G. Chardin DAPNIA/SPP, CEA-Saclay.
WIMP search Result from KIMS experiments Kim Seung Cheon (DMRC,SNU)
? At Yangyang beach, looking for something in the swamp of particles and waves. 1 The recent results from KIMS Seung Cheon Kim (Seoul National University)
ZEPLIN I: First limits on nuclear recoil events Vitaly A. Kudryavtsev Department of Physics and Astronomy University of Sheffield, UK For the UK Dark Matter.
Yong-Hamb Kim Low Temperature Detectors for Rare Event Search 2 nd Korea-China Joint Seminar on Dark Matter Search.
EDELWEISS-II : Status and future Véronique SANGLARD CNRS/IN2P3/IPNLyon
DARK MATTER SEARCH Carter Hall, University of Maryland.
Ray Bunker (UCSB) – APS – April 17 th, 2005 CDMS SUF Run 21 Low-Mass WIMP Search Ray Bunker Jan 17 th -DOE UCSB Review.
G. Gerbier Chinese-french workshop CPPM Marseille sept 2005 Dark Matter : overview of direct searches G. Gerbier CEA/Saclay, DAPNIA -Dark Matter WIMP.
ZEPLIN III Position Sensitivity PSD7, 12 th to 17 th September 2005, Liverpool, UK Alexandre Lindote LIP - Coimbra, Portugal On behalf of the ZEPLIN/UKDM.
SuperCDMS From Soudan to SNOLAB Wolfgang Rau Queen’s University 1W. Rau – IPA 2014.
Potential for Dark Matter Direct Searches in Australia Professor Elisabetta Barberio The University of Melbourne.
1 CRESST Cryogenic Rare Event Search with Superconducting Thermometers Jens Schmaler for the CRESST group at MPI MPI Project Review December 14, 2009.
Limits on Low-Mass WIMP Dark Matter with an Ultra-Low-Energy Germanium Detector at 220 eV Threshold Overview (Collaboration; Program; Laboratory) Physics.
18-20 May 2015, Underground Science Conference, SDSM&T 1John Harton, Colorado State University Recent Results from the DRIFT Directional DM Experiment.
CRESST Cryogenic Rare Event Search with Superconducting Thermometers Max-Planck-Institut für Physik University of Oxford Technische Universität München.
A Search for Cold Dark Matter with Cryogenic Detectors at Frejus Underground Laboratory * EDELWEISS experiment 1.Experiment status and results for first.
From Edelweiss I to Edelweiss II
The CRESST Dark Matter Search Status Report
Harry Nelson UCSB DUSEL Henderson at Stony Brook May 5, 2006
CRESST Cryogenic Rare Event Search with Superconducting Thermometers
Irina Bavykina, MPI f. Physik
Progress with cryogenic dark matter searches
Direct Dark Matter Searches
Christopher M. Savage University of Michigan – Ann Arbor
LUX: A Large Underground Xenon detector WIMP Search
Detecting WIMPs using Au-DNA Microarrays
Yue, Yongpyung, Korea Prospects of Dark Matter Search with an Ultra-Low Threshold Germanium Detector Yue, Yongpyung, Korea
Presentation transcript:

EDELWEISS-I last results EDELWEISS-II prospects for dark matter direct detection CEA-Saclay DAPNIA and DRECAM CRTBT Grenoble CSNSM Orsay IAP Paris IPN Lyon Modane Underground Laboratory (Fréjus) FZ-Karlsruhe and Univ. Karlsruhe B. Censier, CSNSM Orsay, France for the EDELWEISS collaboration Astroparticle Montpellier Toulouse meeting - 29/04/2005

Direct detection constraints Spherical dark matter halo Elastic scattering on target nucleus  a few 10s keV deposited Rare events (< 1 evts/kg/day)  Low background environment: Underground laboratory Passive and active shielding Low radioactivity Materials  High target mass & Long time run (>year) Experimental signatures: Annual or daily modulation Comparison of several absorbers Active discrimination of radioactive background Edelweiss detectors environment

WIMP Heat Ionization Light ≈ few % energy ≈ 20 % energy ≈ 100% energy cryogenic detectors absorber Ge NaI, Xe Al2O3,LiF DAMA (Italie) IGEX(US/Russ) HDMS(Ger/Russ) Liquid Xe Ge, Si CaWO4, BGO EDELWEISS (Fr/Ger) CDMS (US) CRESST(Ger) Rosebud(Spa/Fr) ZEPLIN (GB) XENON (US) XMASS (Jap) Detection methods

Heat and ionisation detectors Wimp Scattered Wimp NTD sensor electrons holes heat channel « Centre » Ionisation channel Ionisation Ionisation: some thousands pairs over some 100ns 2 Al sputtered electrodes (Centre+Guard) Heat Heat: some µK over ms Neutron Transmutation Doped thermistor 320g high purity Ge detectors Ge « Guard » Ionisation channel E

Event by event discrimination Neutron source calibration 73 Ge(n,n’,  ) Ionisation theshold Neutrons, WIMPs Nuclear recoils Different heat/charge ratio for electron and nuclear recoil Discrimination>99.9% for E recoil >15keV Gammas, electrons Electron recoils

Edelweiss-I 1kg stage What’s new ? Energy threshold improvement previous 2003 results: previous 2003 results: 3  320g detectors, additional 20kg.day fiducial exposure with ionisation trigger (100% efficiency for E rec >30keV) latest results (preliminary): latest results (preliminary): additional 22.66kg.day fiducial exposure with phonon trigger (100% efficiency for E rec >15keV)

Wimp-nucleon cross-section constraints (Spin-independent) Sensitivity confirmed with 61.8 kg.d total exposure DAMA candidate excluded at 99.8% CL for M wimp  44GeV Model independent exclusion Copy & Krauss, Phys.Rev.D67, 2003 Kurylov & Kamionkowski, phys.Rev.D69, 2004 DAMA candidate EDELWEISS-I last results: astro-ph/

Wimp-nucleon cross-section constraints (Spin-dependent) Two types of coupling to matter to be considered: Scalar coupling (spin-independent)  (mass number) 2  dominant for heavy nuclei Axial-vector coupling (spin-dependent)  nuclear spin (from unpaired proton or neutron) 7.8% of natural Ge is 73 Ge, a high-spin isotope  4.8kg.day of exposure for spin-independent interaction Even with high-spin nuclei, direct detection sensitivity is orders of magnitude lower for spin-dependent

Wimp-nucleon cross-section constraints (Spin-dependent) Low 73 Ge content balanced by nuclear recoils discrimination and high neutron nuclear spin Indirect detection still 10 times more sensitive (Baksan, Super-K) Sensitivity of EDELWEISS to spin-dependent interactions: astro-ph/

EDELWEISS-II 100 liter cryostat for up to 120 detectors : ≈ 36 kg Ge 100 liter cryostat for up to 120 detectors : ≈ 36 kg Ge Improve sensitivity by factor ~100 EDELWEISS I: ~0.2evt/kg/day (  ~10 -6 pb) EDELWEISS II: ~0.002evt/kg/day (  ~10 -8 pb) Assembly in progress Assembly in progress First data taking: september 2005 First data taking: september 2005 Reversed cryostat, base Temperature: 10mK Close packed detectors (hexagonal arrangement)

EDELWEISS-II improved background rejection EDELWEISS-I 2 main limitations: neutron background Miscollected near-electrode events EDELWEISS-II 2 main improvements: muon veto + improved shielding: 20cm lead, 50cm PE near-electrode events identification

Near-electrode events identification with NbSi bolometers NbSi 1 NbSi 2 Near electrode event Thin evaporated NbSi layers near metal/insulator transition developped at CSNSM Orsay Good coupling with Ge absorber allows out-of-equilibrium phonons detection Simultaneous charge measurement by Nb electrodes Near-electrodes events have an enhanced transitory part x10 -3 Transitory thermal Time (a.u.) Heat signal NbSi 1 NbSi 2 Mirabolfathi et al., 2001

Near-electrode events identification with NbSi bolometers Efficient method down to threshold energy Qualification in Modane: rejection:25% of events, 83% of low-Q events Further improvements: better energy resolution, reproducibility 7 NbSi bolometers in EDELWEISS-II first phase 57 Co calibration run Same run, cut on transient pulse Er(keV) Q=Ei/Er

Near-electrode events identification with ionisation channel Signal (mV) Time (ns)  event 122keV Experimental signal Best fit by simulation Electrons collected Holes collected Induced charge(A.U) Time (ns) Broniatowski et al., 2001 Time-resolved ionisation measurements + carrier transport simulation code allows position identification 1mm on test detectors Further improvement: High Electron Mobility Transistor at 4K Other applications: Double-beta decay Studies on: Electronic transport, space-charge, quality of charge collection

Conclusion Say good bye to EDELWEISS-I Say good bye to EDELWEISS-I Understanding the background Understanding the background R&D work on detectors R&D work on detectors European (Eureca) and american (Super CDMS) projects for 1 ton target European (Eureca) and american (Super CDMS) projects for 1 ton target CDMS-II, CRESST-II, EDELWEISS-II, XENON, XMASS sensitivity goals (~a few events/ton/day) 1 Ton sensitivity goal (optimistic) (~a few events/ton/year) CDMS, CRESST EDELWEISS-I present (~0.1 event/kg/day) L. Rozkowski et al., hep-ph/