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DIRECT DARK MATTER DETECTION AT THE CANFRANC UNDERGROUND LABORATORY FPA2011-23749

DIRECT DARK MATTER DETECTION AT THE CANFRANC UNDERGROUND LABORATORY FPA2011-23749. JOSÉ ANGEL VILLAR RIVACOBA Universidad de Z aragoza. Plan of the talk. The Research Group Members and Scientific Activities Previous Projects on Dark Matter. The Search for Dark Matter

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DIRECT DARK MATTER DETECTION AT THE CANFRANC UNDERGROUND LABORATORY FPA2011-23749

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  1. DIRECT DARK MATTER DETECTION AT THE CANFRANC UNDERGROUND LABORATORY FPA2011-23749 JOSÉ ANGEL VILLAR RIVACOBA Universidad de Zaragoza

  2. Plan of thetalk • TheResearchGroup • Members and ScientificActivities • PreviousProjectsonDarkMatter • TheSearchforDarkMatter • The ANAIS & ROSEBUD experiments • Pastmilestones • Mostrelevantresults • The New Project • Futuregoals and perspectives • Mainaspects of thebudgetrequested

  3. RESEARCH GROUP

  4. TheResearchGroup PermanentStaff (PhD) TechnicalStaff Postdoctorals -Alfonso Ortíz • Ing. Técnico UZ (100%) -David Fortuño • Ing. Técnico MICINN (100%) -Javier Mena • Técnico FPII MICINN (100%) -María Martínez • Investig. ARAID (100%) -Carlos Pobes • Investig. Contr. CPAN (100%) -Héctor Gómez • Investig. Contr. CPAN (50%) -YsraelOrtigoza • Investig. Contr. MICINN(100%) -José Angel Villar (P.I.) Catedrático (100%) -Jorge Puimedón • Profesor Titular (100%) -Eduardo García • Profesor Titular (100%) -Marisa Sarsa • Profesora Titular (100%) -Julio Amaré • Profesor Titular (50%) -Ana Salinas • Profesora Titular (50%) -Susana Cebrián • Profesora Contr. Doctor (50%) 17 members Permanent: 9 Postgraduates -Clara Cuesta • Becario DGA (100%) -Carlos Ginestra • Becaria MICINN (100%) -Miguel AngelOliván • Contratado CPAN (100%) 11 EDP’s 6,5 EDP’s

  5. ScientificActivities • Experimental searchforDarkMatter • Scintillatingcrystals of ultra pureNaI(Tl) ANAIS • Scintillatingbolometersworking at verylowtemperatureROSEBUD • R&D program in ultra lowbackgroundtechniques • Measurement& selection of radiopurematerials • Copperelectroforming of selectedpiecesfordetectors • Scientific &technicalsupportto LSC • UZ GroupistheonlyScientificUnitassociatedtothe LSC • Environmentalradioactivitymeasurements • Spanishprogram of environmentalradioactivitysurvey • Developping of thefirstmap of natural radioactivity in Aragón  

  6. PreviousProjectsonDarkMatter(Last 10 years) • “Búsqueda por detección directa de partículas de Materia Oscura en • el Laboratorio Subterráneo de Canfranc”. FPA2001-02437 • I.P.: Ángel Morales / José AngelVillar (2002-2004) • “Programa experimental de Materia Oscura y Física de Neutrinos en • el Laboratorio Subterráneo de Canfranc”. FPA2004-00974 • I.P.: José Ángel Villar (2005-2007) • “Programa experimental de Materia Oscura en el Laboratorio Subte- • rráneo de Canfranc”. FPA2007-63777 • I.P.: José Ángel Villar (2008-2009) • “Búsqueda de Materia Oscura en el Laboratorio Subterráneo de Can- • franc: Experimentos ANAIS y ROSEBUD”. FPA2008-03228 • I.P.: José Ángel Villar (2009-2011)

  7. TheCanfrancUndergroundLaboratory • Spanish Singular ScientificFacility (2450 m.w.e.) • Createdbyourresearchgroup in 1986 • 1400 m2underground + 1800 m2onsurface • OperativesinceSummer 2010 • Mountingmost of approvedexperiments

  8. SEARCH FOR DARK MATTER

  9. TheDarkMatterProblem We can concludethatmost of thematteris non baryonic and formedby non conventionalparticles of unknownnature THE UNIVERSE SEEMS TO BE MOSTLY DARK W ~ 1 Dark Energy ~73% W Non-Barionic Dark Matter ~23% Barionic Dark Matter ~3.5% Barionic Visible Matter~ 0.5%

  10. Experimentsfordirectdetection of DM Noble liquids Noble liquids XMASS, CLEAN, LUX, CLEAN, DEAP ZEPLIN, XENON, WARP, ArDM Superheatingliquids SIMPLE, COUPP, PICASSO, COGENT NaI crystals LIGHT IONIZATION DAMA/LIBRA, ANAIS TPCs DRIFT, MIMAC, DMTPC, NEWAGE WIMP Bolometers Ge, Si Scintillatingbolometers EDELWEISS, CDMS CRESST, ROSEBUD HEAT

  11. 40 cm neutron shielding Active veto 20 cm lead PVC box 2 mm Cd Vibration isolator 10 cm Roman lead The ANAIS experiment Project: 100-250 kg NaI(Tl) scintillators to be installed at the new facilities of LSC Goal: Look forannualmodulation in thedarkmattersignal Motivation: DAMA-LIBRA positive result in annualmodulationof thedarkmattersignal(250 kg NaI(Tl), exposure: 0,87 ton.year) Interest: Comparison of experiments is model–dependent  same target NaI Mainchallenge: Radiopurity at the level of ppbin: NaIpowder, crystals, PMT’s and other inner components

  12. Pastmilestones in thewayto ANAIS Darkmatterexperimentswith Ge detectors • COSME @ LSC (1990-92 & 1998-99) • COSME-SUR @ Sierra Grande (Argentina)(1994-97) • IGEX-DM @ LSC (1999-2003) DarkmattersearcheswithNaI(Tl) scintillators • NaI-32 @ LSC, 32 kg NaI, Mt: 4614 kg.day(1993-95) • lookingforannualmodulationeffect → No evidence • ANAIS prototypes I-IV @ LSC (2002-2010) energythreshold, radiopurity, light collection,… • ANAIS-0 data takingongoing(2011) Experiment in the Road map of ASPERA (2007) Approval of ANAIS as aLSC experiment(2008) DM-Ice contactforpossiblesynergies & commongoals (2011)

  13. Mostrelevantresults of ANAIS prototypes • Lowenergyachievements • Trigger at photoelectronlevelachieved • Calibration at verylowenergy(<3 keV): linear behaviour • Lowenergyestimators &noiserejectioncriteriadeveloped • Requiredenergythreshold (2 keVee) achievable • Lowbackgroundachievements • Understanding &reduction of background • LB, ULB &HQE PMT’stesting(radiopurity, QE, resolution) • PSA fora/bgdiscrimination (U/Th internalcontamination) • 40K internalcontaminationmeasured (coinc. technique) • Copperelectroformingready(cleancomponents) • New NaIpowderpurificationprocess (< 100 ppb in Potassium) • Radiopurecrystalgrowthprocessneeded (40K, Th, U) • Requiredlowbackgroundlevel (< 2 evt/keV/kg/day) achievable

  14. The ROSEBUD experiment • Technique: Scintillatingbolometers • Simultaneousmeasurement of heat & light • Particlediscriminationcapability backgroundrejection • Multiple target choice Interest:Searchfor new DarkMattertargets and application as neutrondetectors Goal:Developand optimizescintillatingbolometers of differentmaterialswithapplications in Nuclear and ParticlePhysicsexperiments

  15. Pastmilestones of ROSEBUD Collaborationwith IAS (Orsay) (1997) Undergroundcryogenicfacilities • Installation at oldfacilities of LSC (1998) dilutionunit, • construction of Faraday cage+ vacuumpumping(1999) • Cryogenicfacility Lowbkgcryogenicfacility(2001) • Installation@new facilities of LSC (ongoing) (2011) Incorporationto EURECA(2006) • 1 ton cryogenic hybrid detector array @LSM (running 2018) • 1st stage: 100-150 kg (running 2015) Collaborationwith ADG of Lisbon(2007) • Installation@Zaragoza of Kelvinox 100 dilutionrefrigerator • Reparationand upgrading of dilutionunit • Preliminarytestswith NTD-Ge sensors Approval of ROSEBUD as a LSC experiment(2008)

  16. BGO LiF 6Li(n,a) resonances Al2O3 Mostrelevantresults of ROSEBUD • DM search • Experimentwith Al2O3bolometers(1999) • Firstunderground light vs heatdiscrimination (CaWO4) (2001) • Multi-target strategy (distinctive WIMP signal) withbolometers(2004) • and withscintillatingbolometers(2007) • Excellent light-heatdiscrim. of nuclear recoils: 10 keV (Al2O3) (2007) • Nuclear physics • Rarealphadecays (W isotopes) (CaWO4) (2003) • (K/L) ratio in 207Bi EC (BGO) (2010) • Fast and thermalneutrondetection(LiF&Al2O3) (2008) • Detectors characterization • Absolute ligtht yield measurement (Al2O3) (2005) • Thermal REF of nuclear recoils measurement (Al2O3) (2008) • Energy partition (light-heat-traps) (2011) 10 keV

  17. NEW PROJECT

  18. Futuregoals of ANAIS 1 • Mounting new housingfor ANAIS in hall B of LSC • Full conditioning & characterization of new cabin • Data analysis of thefirsttest runswithANAIS-0 module • Acquisitionsystem and data analysis (software & hardware) • Testing & optimization of new acquisitionsystem@LSC • Development of new software forslow control &data analysis • Characterization & selection of PMT’s • Characterization& selection of PMT’s (LB, ULB, HQE) • Analysis of background, efficiency, light collection and threshold • Purification up to 250 kg of radiopureNaI • Final negociations & fixing of total mass and schedule • Production of radiopureNaIbatches & testingradiopurity

  19. Futuregoals of ANAIS 2 • Production of theradiopureNaIdetectors • Growthprotocoldefinition & detectorscharacteristics • Crystalsgrowing& test of radiopurity • Encapsulation,PMT coupling & final testing • Full ANAIS mounting & commisioning • Reception & detector testingbeforemounting • Final mountingand commisioning @ LSC • Data analysis of ANAIS experiment • Possiblefutureimprovementsof ANAIS • ANAIS simulationswithfeedback of experimental results • Analysis of possibleaddition of CsIdetectors • Experimental study of temperatureonthecrystals response

  20. Futuregoals of ROSEBUD • Testing of new scintillatingmaterials at verylowtemperatures • Study of new possibledarkmattertargets • Thermal n detection and fast n spectrocopy • Study of energypartitionmechanisms & scintillationcharacteristics • Study of scintillation at lowtemperatures • Analysis of resolution & thresholdimprovement • Design of new mechanicalstructuresforhousingdoublebolometers • Study of lowbackgroundrequeriments • Technicaldesign, construction and test of light collection • Screeningof materialsforEURECA • Design of protocols & preparation of samples • RadiopuritymeasurementswithHPGedetectors

  21. BUDGET

  22. Requestedbudget1 • PERSONNEL295.000 € • Physicist/Engineer(Computing) (3 years) 128.000 € • TechnicalEngineer (Electronics) (2 years) 76.000 € • FPII Technician (Maintenance - UZ/LSC Net) (3 years) 91.000 € • INVESTMENTS550.000 € • ANAIS (24 detectors) • Ultra-lowbackgroundPMT’s 260.000 € • Electronic modules (CAEN, MATACQ, homemade)115.600 € • Shieldings(plasticdetectors, lead bricks,methacrylate box) 58.400 € • Refrigerationsystem(cooling up to -30º) 43.000 € • ROSEBUD • Scintillatingcrystals / bolometers 26.000 € • Electronic modules (HV and amplifiers) 33.000 € • Small cryogeniccomponents14.000 €

  23. Requestedbudget2 • CONSUMABLES 50.000 € • Liquidnitrogen, helium, smallelectroniccomponents, • chemist and hardware materials, … • TRAVELS EXPENSES55.000 € • Travels Zaragoza-Canfranctooperatetheexperiments, • atendancetoscientificmeetings and workshops, … • OTHERS 20.000 € • Material transport, works in externalworkshops, … Personnel 295.000 € Investments 550.000 € Consumables 50.000 € Travelexpenses 55.000 € Others 20.000 € TOTAL 970.000 €

  24. THANK YOU

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