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Beta-beam study group
Letter of Intentbeta-beam design study
Mats LindroosOn behalf of the
Beta-beam working group
Beta-beam study group
CERN: -beam baseline scenario
PS
Decay
Ring
Decay ring
Brho = 1500 Tm
B = 5 T
Lss = 2500 m
SPSISOL target & Ion source
SPL
Cyclotrons, linac or FFAG
ECR
Rapid cycling synchrotron
Nuclear Physics
MeV 86.1 Average
MeV 937.1 Average
189
1810
63
62
cms
cms
E
eFeNe
E
eLiHe
P. Zucchelli, Phys. Lett. B, 532 (2002) 166-172
Beta-beam study group
Beta-beam• Isotope production using the
ISOL method with a proton driver of SPL type
• Bunching in high frequency ECR source
• Production and acceleration to 100 MeV/u already studied in EURISOL study– TARGISOL (U. Koester)
• Accumulation in low energy storage ring
• Acceleration to 300 MeV/u using fast cycling synchrotron, FFAG or cyclotron
• Acceleration to higher energies using existing CERN accelerators
• Injection and accumulation using newly developed scheme
M. Benedikt and S. Hancock, CERN
Beta-beam study group
Physics reach• Combined with a Super
Beam the beta-beam can successfully address CP violation for values of the mixing angle 13 as small as 1 degree
• With improvements on the isotope production it is possible that the beta-beam could become comparable to a neutrino factory
• In conjunction with the Super-beam, the beta-beam would also allow for tests on T and CPT in the neutrino sector
M. Mezzetto, Proceedings of Nufact 02, London, 2002, hep-ex/0302007 and presentation at NUFACT03, New York, 2003
Beta-beam study group
CERN to FREJUSGeneve
Italy
130km
40kt400kt
CERN
SPL @ CERN2.2GeV, 50Hz, 2.3x1014p/pulse 4MWNow under R&D phase
Beta-beam study group
UNO like detector in Frejus
• UNO: 400 KTon water Cerenkov detector
• Originally designed for proton decay studies and supernovae explosion observations
• A multipurpose observatory which will address several fundamental physics issues besides neutrino oscillations
Chang Kee Jung, hep-ex/0005046
Beta-beam study group
Moriond meeting• Annual electro week meeting in Les Arcs• Workshop on Radioactive beams for
Nuclear and Neutrino Physics– Organizer: Jacques Bouchez, CEA, Saclay
• Many new ideas, among them:– Multiple targets for Ne production– ECR bunching (P. Sortais)– Ne and He in the decay ring simultaneously– Low energy beta facility
• GSI, GANIL and CERN (in close detector)• C. Volpe, hep-ph/0303222, submitted to Phys. Rev.
Let
Beta-beam study group
Synergies
• Close synergy with the EURISOL project– Isotope production– Acceleration to 100 MeV/u
• Possible synergies with GSI up-grade plans for accelerator issues and decay ring
• Possible synergies with LHC heavy ion programme
Beta-beam study group
Design study• A full Technical Design Report could be
achieved within five years• Technical Preparatory work can immediately
start on:– Target design– ECR source– High energy accumulation scheme
• Study and design work:– Accelerator issues– Decay ring– Superconducting dipole design– Simulation and design work to handle decay losses
Beta-beam study group
Who are we?Signatures sorted in alphabetical order on institute and authorJacques Bouchez, Luigi Mosca, Olivier Napoly, Jacques Payet,
Saclay, CEA, FranceMichael Benedikt, Peter Butler, Roland Garoby, Juan-Jose Gomez Cadenas, Steven Hancock,
Pilar Hernandez, Ulli Koester, Mats Lindroos, Matteo Magistris, Thomas Nilsson, Fredrik Wenander
CERN, SwitzerlandAlain Blondel, Simone GilardoniGeneva University, Switzerland
Oliver Boine-Frankenheim, Bernhard Franzke, Ralph Hollinger , Markus Steck , Peter Spiller, Helmuth Weick
GSI, GermanyBernard Laune, Orsay , Alex Mueller, Orsay, Pascal Sortais, Grenoble , Antonio Villari,
GANIL, Cristina Volpe, OrsayIN2P3, France
Alberto Facco, Legnaro, Mauro Mezzetto, Padua, Vittorio Palladino, Napoli, Andrea Pisent, Legnaro
INFN, ItalyThierry Delbar, Guido Ryckewaert
Louvain-la-neuve, BelgiumMarielle Chartier
Liverpool university, UKChris PriorRAL, UK
Dag ReistadUppsala university, The Svedberg laboratory, Sweden
Associates: Rick Baartman, TRIUMF, Vancouver, Canada, Andreas Jansson, Fermi lab, USA
Beta-beam study group
Conclusions• All alternatives for the production of intense
neutrino beams should be fully studied– Physics reach– Technical Design Report with reliable cost estimates
• The beta-beam facility, the super-beam and an UNO like detector is a very powerful tool for research in neutrino physics
• The organization and governance of the design study should come from ESGARD and EMCOG– Synergies with nuclear physics studies
• ESGARD recommends that the beta-beam forms part of either:– A unique neutrino beam design study (hosted by RAL)– The EURISOL design study (hosted by GANIL)