PTOLEMY - agenda.infn.it
Transcript of PTOLEMY - agenda.infn.it
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PTOLEMY(PonTecorvo Observatory for Light Early-Universe Massive-Neutrino Yield)
atLNGSKick-offmeeting,December11-12,LNGS,L'AquilaItaly
A.G.Cocco,M.MessinaandC.G.Tully
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UndergroundphysicsatLNGSüNeutrinos(BOREXINO,LVD,GERDA,CUORE,COBRA)üDarkMatter(DAMA/LIBRA,DARKSIDE-50,XENON,CRESST)üNuclearAstrophysics(LUNA)ü FundamentalPhysics(VIP)üMultidisciplinaryACTIVITY(GINGER,CosmicSilence,ERMES-W)
The three experimental halls (A, B, C) are ~100 long 20 m wide and 18m height.
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Aimofthemeeting
The main goal of the meeting is to gather physicistsinterested in the PTOLEMY project and give a clearpicture the state of art of the technology.
Bytheendofthemeetingwillhopefullystartacollaborationthatisinterestedinstayingengagedinacommoneffort,forexampleon:• ParticipatetotheprototypeactivitiesatLNGS• ShareR&Dprogressatcollaborationmeetings• DesignthefinaldetectorforRelicNeutrinosearch• Pursuegrantapplicationstoself-fundtheirgroups• Contributetocollaborationproposalsfornext
generationprototypesandafull-scaleexperiment(Moredetailswillbediscussedtomorrow)
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PTOLEMYprototypeatLNGSTheproofofprinciplerequirestoshowthecapabilityoftransportingsingleelectronfromthesourcetothe
measuringpointwithminimalimpactonthetotalenergy.
Backgroundfreeenvironmentisrequiredfor:Ø ElectrodesbiasvoltagestabilityØ ReducingbackgroundelectronsfromtheGrapheneØ ReducingnoiseonRFpick-upsignalØ ReducingcountsintheTESmicro-calorimeterØ ReducingbackgroundparticlesintheMAC-Efilter.
RunningtheprototypeatLNGSwillallowtoevaluatetheeffectoftheoverburdenonthePTOLEMYdetectorperformance.
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LNGSisaspecialplace• Mechanical,electronicandchemistryworkshopshavetheknowhow
thatiskeytotheaccomplishmentoftheproofofprincipleof
PTOLEMY.
• LocalcommunityofResearchershaveexpertise
• inlowtemperatureapparatus,
• ultracleanmaterialsselectionandoperationinclean
environment,
• insettingupandruntemperaturesensorswhichwillhavea
specialroleinthefinaldetectordesign.
• Commonlocationwherethecollaborationcanmeetandwork
together.
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PotentialSitesfortheRelicNeutrinoExperimentwithfullTload
OthersitesarealsounderconsiderationinEurope(Canfranc inSpainandinSweden)andalsoinItaly.
InBolognaregionanoldtunnel,usedbycivilaeronauticsinthelate40,hasbeenrefurbishedbyUniversityofBolognatohostawindtunnel.Asecondtunnelisavailabletobeusedforothertypeofresearch.Thisisashallowdepthsite.
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Garpenberg MineDistance from ESS Lund 540 km
Depth 1232 m Truck access tunnelsPreviously two ore-hoist shafts
Recently a new ore-hoist shaft was taken into operation,leaving the Garpenberg Norrashaft free for other uses Granitedrillcores
7SeminarinGrenobleTordEkelöfUppsalaUniversity2015-12-15