Speaker
Description
The GANIL facility (Grand Accélérateur National d’Ions Lourds) in Caen has been delivering stable and radioactive ion beams since 1982 for experimental research in nuclear physics, atomic physics, radiobiology, and materials science.
At GANIL, radioactive ion beams are produced using two complementary approaches. The first is the Isotope Separation On-Line (ISOL) method implemented at the SPIRAL 1 facility, where radioactive nuclei are produced in thick targets using primary beams with energies up to 95 MeV/u and intensities reaching several microamperes. The extracted ions are charge-bred and accelerated by the CIME cyclotron to energies ranging from 1.2 to 25 MeV/u, with typical beam intensities up to 10⁶–10⁸ particles per second depending on the isotope.
The second approach is the in-flight fragmentation of stable heavy-ion beams (up to uranium) accelerated to energies of 60–95 MeV/u and impinging on a rotating target. The resulting fragments are selected and purified using the LISE spectrometer, providing beams with energies close to the primary beam and intensities typically ranging from 10² to 108 particles per second.
This presentation will describe the production mechanisms, target–ion source systems, charge breeding, beam optics, and separation techniques, and will discuss beam performances in terms of energy, intensity, and isotopic purity for both production modes.
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