SuperNEMO' Status and Overview

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SuperNEMO.Status and Overview

• 12 December 2005
• HEP group Xmas meeting
• Ruben Saakyan

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Why SuperNEMO?
Motivation see Vladimirs talk
Our last(?) chance to detect gold-plated bb0n
events
0.05 eV region as suggested by n oscillations
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SuperNEMO overview
Evolution of NEMO 3 ? same technique, larger
mass, lower background
better efficiency, higher energy
resolution 82Se experiment (high Qbb, slower 2n
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 T1/2 2 x1026 y

?Mbb? lt 40 - 70 meV
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SUPERNEMO single module
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SUPERNEMO possible module arrangement and
shielding
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Statement from 1st Astroparticle EU town
meeting Munich, 23-25 Nov. by A. Giulliani
Potential large-mass ( 100 kg) future
experiments
Most promising projects (attack the 50 meV mass
scale)
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SuperNEMO collaboration

• UK
• UCL MSSL
• Manchester
• Proposal from Imperial being submitted
• France
• Russia
• Czech Republic
• US
• Spain
• Japan
• Others expressed interest

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SuperNEMO people in UCL

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

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SuperNEMO work at UCL so far. Scintillator RD
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SuperNEMO work at UCL so farFirst sensitivity
sumulations
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SuperNEMO Status
Design study proposal approved by PPRP SC! (3
year programme, start 1 Feb 2006)

• RD on critical components (tracker,
  calorimeter)
• Development of Technical Design Report
• Experimental site selection

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SuperNEMO work packages
Simulations
Calorimeter
Trigger-DAQ
Tracker
Calibration
TDR
bb source
coordinated by UK
UK involved

• Calibration - UCL
• Calorimeter - UCL
• Simulations ALL
• Trigger-DAQ Man. U, UCL
• TDR - ALL

• Tracker
• 9-cell prototype Man. U
• 100-cell prototype UCL/MSSL. Man.U
• Wiring robot UCL/MSSL

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Wiring Robot(key to the project success)
The challenge from 6,000 to 60,000 cells

• Wires must be
• strung
• terminated
• crimped
• This can not be done
• manually (10 min/wire)

• Complications
• Copper pick-ups
• Must be cost effective
• Solder can not be used (radiopurity)

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SuperNEMO 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 eV