[Triumf-seminars] TRIUMF Seminar today at 14:00

[TRIUMF Seminars]

Date/Time: Fri 2013-05-24 at 14:00

Location:  Auditorium          

Speaker:   Maria Borge (CSIC, Madrid and CERN)

Title:     THE ISOLDE FACILITY: HIGHLIGHTS and FUTURE PLANS

Abstract: The ISOLDE Facility at CERN produces radioactive beams through fission, spallation and fragmentation reactions induced by 1.4 GeV protons from the PS booster. The ISOL method involves in this case the bombardment of a thick target with an intense proton beam, producing high yields of exotic nuclei with half-lives down to the millisecond range. By a clever combination of target and ion source units including the use of ionization lasers pure beams of 700 different nuclei of 75 elements have been produced and delivered to experiments where properties of the nuclei such as masses, radii, structure and shapes are determined. The high quality of the beams allows high-precision measurements of beta decay and particle correlations including measurement of beta-neutrino correlations in order to prove fundamental interactions in nuclei. Further since ten years it offers the largest variety of post-accelerated radioactive beams in the world today.  The combination  of the Mini-ball gamma-ray array  and T-REX charged particle detection system has been successfully used to study nuclear shapes through Coulomb excitation and transfer reactions up to mass 40. The most recent highlights coming from the different devices will be presented in this conference with special emphasis in the studies done in neutron rich nuclei.

In order to broaden the scientific opportunities beyond the reach of the present facility, the HIE-ISOLDE (High Intensity & Energy) project will provide major improvements in energy range, beam intensity and beam quality. A major element of the project will be an increase of the final energy of the post-accelerated beams to 10A MeV throughout the periodic table. The first stage will boost the energy of the current REX LINAC to 5 MeV/u where the Coulomb excitation cross sections are strongly increased with respect to the current 3 MeV/u and many transfer reaction channels will be opened. 
The status of the on-going project will also be presented.


Stimulants available 15 minutes before the talk.

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General TRIUMF seminar information available at http://www.triumf.ca/home/upcoming-events/about-seminars-lectures