DAMA/LIBRA Experiment
(Large sodium Iodide
Bulk for RAre processes)
DAMA/LIBRA target-detector mass: ~250 kg highly radiopure NaI(Tl)
New NaI(Tl) detectors built after a 2nd generation R&D
(new materials selection, new dedicated protocol and physical/chemical
radio-purification of powders)
New electronics and DAQ
Improvements of the installation and of all the parts of the set-up
Works for the disinstallation of 100 kg NaI set-up, for installation
improvements and for the installation of DAMA/LIBRA started on July/August 2002.
In particular, all procedures involving
detectors, PMTs, etc. have been performed in
HP Nitrogen atmosphere
DAMA/LIBRA started preliminary measurements in March 2003
First data release in April 2008 (exposure of 0.53 ton x yr)
First upgarding in September 2008
Photos during this upgrading
New data release in February 2010 (cumulative exposure over six
annual cycles 0.87 ton x yr)
New upgrading in November 2010 Photos during this upgrading, closing DAMA/LIBRA-phase1
and starting the new DAMA/LIBRA-phase2
New data taking in improved set-up
on August 2013 published the final model-independent results of the whole DAMA/LIBRA-phase1 (7 annual cycles for an exposure
of 1.04 ton x yr: cumulatively with DAMA/NaI: 1.33 ton x yr)