Welcome to NEWS!
Originating from a symposium at Thessaloniki in 2012, the NEWS (New Experiments With Spheres) network gathers physicists interested in developing gaseous spherical detectors (or SPC, Spherical Proportional Counter) for multiple particle detection purposes.
Specific features of these kind of detectors – low capacitance, low threshold, excellent energy resolution, single readout channel in its simplest version, low cost, robustness, flexibility in gas choice and in operating pressure – have led to envisage various applications ranging from Dark Matter detection, Coherent Nuclear Neutrino Scattering study, Double Beta decay search to gamma ray and neutron spectroscopy.
The present web pages are dedicated to setting up a project related to Dark Matter detection, designated NEWS-SNO.
Searching for light Dark Matter particles with NEWS
An initial 60 cm diameter prototype made of high purity copper has been set-up at the Laboratoire Souterrain de Modane (LSM) by IRFU and LSM teams, initially to measure neutron spectra. Successful operation led to set-up and operation of the detector to search for Dark Matter particles of low mass; preliminary results are very encouraging and are subject to a coming publication .
An enlarged collaboration now seeks to build a 1.4 m diameter spherical detector, within a lead shielding. This is to increase the physics reach in the GeV and sub-GeV mass range, thanks in particular to the use of very light nuclei targets like He and H from CH4 or other H rich gas.
The ideal location for operation is SNOLAB, the second deepest and the cleanest underground laboratory in the world.
News on NEWS
June 2016: TRISEP Summer SchoolGilles Gerbier travelled to Vancouver, Canada to lecture on Dark Matter detection at the Tri-Institute Summer School on Elementary Particle (TRISEP), hosted by the Perimeter Institute, SNOLAB, and TRIUMF Laboratory.
June 2016: CAP Congress 2016Members of the Queen's University team presented current findings and research on the NEWS project at the annual Canadian Association of Physicists (CAP) Congress held in Ottawa, Canada. Presentations included results summaries of NEWS experiments. Visit the CAP 2016 page here.
April 14-16, 2016: Second Collaboration Meeting at LSM, FranceThe second collaboration meeting took place at Laboratoire Souterrain de Modane in France, featuring updates from all aspects of the collaboration and welcoming new collaborators to NEWS.
Meeting Gallery: Collaboration dinner