GEODMsimfordepthworkinggroup

A.  Reise:erSuperCDMSandGEODMcollaboraAons

AARMmeeAng6/23/2012

7mrockCavernis20mcube

Water12mdiameter&height

Shielding/materialthicknesses

4.9mwater1cmsteel20cmpoly3cmCu

GEODMgeometryAsclosetoLUXaspossible

10towers30det/tower

Eachdet:6”diameter2”thick5.1kg/det

Total1.53e3kgGe

LiveAme&staAsAcs

MUSUNmuonsforSanfordlabthrownfrom5sidesof34mcubePropagatedwithGeant4.9.5Physicslist:Shielding,withpatch,andnewMuonNuclearonAllshowerparAcleskept

3000filesof20kmuonseach,postedath:p://cdmsnano.fnal.gov/xfer/simData/DUSELmuonFiles/

LiveAmeof73.6years

Forthisanalysis,Muons:2.45yearsNeutrons:5.91years

FromChao’s“Soloneutron”distribuAon

Total >1MeV >10MeV >100MeVM&HGSratesscaledtoHomestakeusingmuonrates(.44/2.58)

0.46 0.138 0.125 0.0343

Thissim 0.574/0.22w/200keVthresh

0.164 0.0678 0.0310

Mei&HimetableVcomparisonusingneutronsentering16mx16mcavern

units:nx10‐9/cm2/s

Ingoingneutronsoutsideandinsideshield

volume #neutrons #events Mul4plicity Eventrate/cm2/s

Cavern(avgall6walls)

1.43M 191k 7.49 6.68e‐11

Steelwallinsidewater

135k 38k 3.56 2.68e‐9

NRsindets