Super NEMO Status and Overview 12 December 2005

Super. NEMO. Status and Overview 12 December 2005 HEP group Xmas meeting Ruben Saakyan

Why Super. NEMO? Motivation see Vladimir’s talk Our last(? ) chance to detect gold-plated bb 0 n events 0. 05 e. V region as suggested by n oscillations

Super. NEMO overview Evolution of NEMO 3 same technique, larger mass, lower background better efficiency, higher energy resolution 82 Se experiment (high Qbb, slower 2 n rate) as baseline. Basic points: Planar geometry Modular structure Isotope Mass 100 -200 kg Instrumentation ~20 submodules, 40, 000 – 60, 000 tracking channels ~ 5, 000 – 20, 000 PMTs (depending on the design) Sensitivity T 1/2: 2 x 1026 y Mbb < 40 - 70 me. V

SUPERNEMO single module source tracker calorimeter 1 m 4 m 5 m Top view Side view

SUPERNEMO: possible module arrangement and shielding WATER 1, 5 m Need of cavity of ~ 60 m x 15 m Modane(new cavern), Gran Sasso, Canfranc (Spain)

Statement from 1 st Astroparticle EU town meeting Munich, 23 -25 Nov. by A. Giulliani Potential large-mass (~ 100 kg+) future experiments Most promising projects (attack the 50 me. V mass scale): GERDA SUPERNEMO CUORE EXO MAJORANA Europe + US US

Super. NEMO collaboration n UK n n n n n UCL + MSSL Manchester Proposal from Imperial being submitted France Russia Czech Republic US Spain Japan Others expressed interest…

Super. NEMO people in UCL n n S. King, R. Saakyan, G. Sciacca, J. Thomas, V. Vasiliev, S. Williamson New RA +…. Important contributions from our mechanical, electronics, and software experts MSSL n n Physics Lab construction starts March 2006, ready – March 2007 MSSL resources (mechanical, electronics) will be heavily involved

Super. NEMO work at UCL so far. Scintillator R&D

Super. NEMO work at UCL so far First sensitivity sumulations

Super. NEMO Status Design study proposal approved by PPRP + SC! (3 year programme, start 1 Feb 2006) R&D on critical components (tracker, calorimeter) Development of Technical Design Report Experimental site selection

Super. NEMO work packages Simulations Tracker coordinated by UK Calorimeter Trigger-DAQ Calibration TDR bb source UK involved Tracker 9 -cell prototype – Man. U 100 -cell prototype – UCL/MSSL. Man. U Wiring robot – UCL/MSSL Calibration - UCL Calorimeter - UCL Simulations – ALL Trigger-DAQ – Man. U, UCL TDR - ALL

Wiring Robot (key to the project success) The challenge: from 6, 000 to ~60, 000+ cells Wires must be ü strung ü terminated ü crimped This can not be done manually (~10 min/wire) Complications Copper pick-ups Must be cost effective Solder can not be used (radiopurity)

Super. NEMO milestones 2006 -8: Design study (tracker, simulations, calorimeter etc) If Design Study successful, by end 2008 Full Technical Design Prototype (possibly in Canfranc) Experimental site end 2008: Full Proposal 2009 – 2011: Production 20010 -2011: Start taking data 2015: planned sensitivity ~0. 04 e. V