Volume 98, Number 3, May 2012
|Number of page(s)||6|
|Published online||11 May 2012|
A high intensity 6He beam for the β-beam neutrino oscillation facility
CERN - CH-1211 Geneva 23, Switzerland
2 Department of Particle and Astrophysics, Weizmann Institute of Science - Rehovot, Israel
3 Soreq Nuclear Research Center - Yavne 81800, Israel
4 Grand Accelerateur National d'Ions Lourds (GANIL), CEA/DSM-CNRS/IN2P3 BP 55027, F-14076 Caen Cedex 5, France, EU
5 Department of Nuclear Physics and Biophysics, Comenius University - SK-842 48 Bratislava, Slovakia
6 Centre for Medical Physics, UIEAST, Panjab University - Chandigarh 160014, India
Accepted: 4 April 2012
This work presents the production and extraction of the short-lived radionuclide 6He in yet unmatched yields from the ISOLDE facility at CERN. It is the first report of 6He production using spallation neutrons via the 9Be(n, α)6He reaction. These neutrons are produced from the 1.4 GeV proton beam of the Proton Synchrotron Booster (PSB) striking a tungsten converter, and are impinging on a porous BeO material. The central position of 6He in future experiments is due to its role as a necessary radioactive nucleus to realize the β-beam at CERN, a next-generation facility to study neutrino oscillation parameters, and hence neutrino masses. In the β-beam scenario, an intense beam of radioactive 6He nuclei will be produced, accelerated to multi-GeV energies and stored in a dedicated storage ring. The resulting virtually mono-directional anti-neutrino beam from the decay of the stored 6He nuclei will be directed towards a remote underground neutrino detector. A similar beam of, e.g., 18Ne will provide neutrinos, an ideal concept to test CP violation in the neutrino sector. The results of the present experiment demonstrate for the first time that the necessary conditions for the realization of the proposed β-beam scheme with anti-neutrinos can be fulfilled.
PACS: 29.38.Gj – Reaccelerated radioactive beams / 14.60.St – Non-standard-model neutrinos, right-handed neutrinos, etc. / 25.40.-h – Nucleon-induced reactions
© EPLA, 2012
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.