IDM2004 G. Gerbier LSM - Fréjus underground sites status and projects Gilles Gerbier CEA/Saclay - LSM
Mar 30, 2015
IDM2004 G. Gerbier
LSM - Fréjus underground sitesstatus and projects
Gilles Gerbier
CEA/Saclay - LSM
IDM2004 G. Gerbier
FréjusFréjus
ModaneModane
Entrance of road tunnelEntrance of road tunnel
COMMISSARIAT À L’ÉNERGIE ATOMIQUE
IDM2004 G. Gerbier
FRANCE ITALIE
AltitudesDistances
1228 m 1298 m1263 m0 m 6210 m 12 868 m
TorinoChambéry
IDM2004 G. Gerbier
The lab now (2004)
- 1 .6 10-6 fast neutrons/cm2/s from rock/concrete radioactivity- air continuously renewed : 2 vol/hour- very low Rn concentration 5-10 Bq/ m3
- 1 .6 10-6 fast neutrons/cm2/s from rock/concrete radioactivity- air continuously renewed : 2 vol/hour- very low Rn concentration 5-10 Bq/ m3
- 1750 rock thickness- 4800 mwe- 4 muons /m2/ day
- 1750 rock thickness- 4800 mwe- 4 muons /m2/ day
IDM2004 G. Gerbier
• Upgrade of cooling unit for the lab : from 60 kW to 230 kW cooling power-end 2004– Use air from tunnel as « cold source »
• Radon free air installation (0.2 Bq/m3)– October 2004
• Edelweiss II installation– October 2004 - june 2005
Near future
IDM2004 G. Gerbier
Edelweiss II - how to install a 100 T set up of 5 * 3 m * 3m +
services in this free space ?
IDM2004 G. Gerbier
Future plans
New safety gallery Start 2005
New Lab ?? Project
IDM2004 G. Gerbier
Le salon de la nouveauté et des savoir-faire le 12 et 13 Octobre 2002 . LSM.
ITALIE
FRANCE
Actual laboratory
3500 m3
Large laboratory
1 000 000 m3
Routier
Galerie de
secours
DETECTEURS
CHERENKOV
Artist view Ph C
Neutrino properties, proton decay, supernovae…
Towards a Large International Underground Laboratory
IDM2004 G. Gerbier
How to measure 13 and
Study e oscillations at first maximum
L= 500 km/GeV x E
with E = 260 MeV (see later CERN beams) then L= 130 km
compare amplitudes for neutrinos and antineutrinos = A2 + S2 + 2AS sin
= A2 + S2 - 2AS sin
atm) = 21/2 13
S (sun) ~ 0.04 for LMA
but need high intensity beam ie MW proton beam…
)( eP
)( eP
IDM2004 G. Gerbier
Genève
Grenoble
Chambéry
Annecy
Modane
Albertville
A6
Turin
St Jean de Maurienne
Valence
A43
LYON
C.E.R.N
Massif du Jura
C.E.R.N
Lac Léman
Lac d’Annecy
Lac du bourget
Massif du Fréjus
FROM CERN TO Fréjus : 131 km for neutrinos 164 km for cars
130 Km
Sending neutrinos from CERN to Sending neutrinos from CERN to Fréjus…Fréjus…
IDM2004 G. Gerbier
SPL beam produces « super beam »
= low energy 260 MeV neutrino beam
CERN working groups results
IDM2004 G. Gerbier
NewLINAC
An ideal complementary e beam : the « beta beam »
Concept proposed by Piero Zucchelli at CERN•Produce radioactive ions (ISOL technique), 6He and 18Ne•Accelerate them in the CERN accelerator complex up to of order 100, to produce 0.3 GeV neutrinos•Store ions in a storage ring with long straight sections aimed at a far detectorAdvantages :•strongly focussed neutrino beam due to small Q value of beta decays•very pure flavour composition ( contamination ~ 10 -4 )•perfectly known energy spectrum http://beta-beam.web.cern.ch/beta-beam/
IDM2004 G. Gerbier
With 10 years running
IDM2004 G. Gerbier
5) An « 0ptimal » schedule for a Megaton Physics Project inEurope
Safety Tunnel
Large Cavity
R&D PMT’s, etc.
PMT’s production
2003 2004 2007 2008 2012 2015 2020
Detector installation
Start Megaton Physics
SPL + Super-beam realization
Procedure :
Beta-beam realization
excavation
excavation
R&D PMT’s, etc
PMT’s production
Detector inst.
Start Megaton Physics ………………...………………….
SPL+Super-beam realization
Beta-beam realization
EoI
Year
?
?
studyPre-study
LoI Prop Approv.
IDM2004 G. Gerbier
Outlook
• NB : advantages of Fréjus site– Good and known rock, horizontal access– Central location in Europe, easy access by train, car, plane,
ski…– Right distance to CERN for n osc studies
• Feasability study under way – Cavities shape, rock extraction and evacuation, cost
• PMT technology and R&D underway• Formation of collaboration
– Working group : coordinator J Bouchez (Saclay) [email protected]
– NNN (Neutrino and Nucleon decay) workshop in spring 2005 at Aussois, near Modane, organised together with UNO US collab
• Welcome…