Speaker
Thomas Day Goodacre
(CERN)
Description
The long shutdown (LS1) provided an opportunity for ionization scheme and ion source development for the ISOLDE resonance ionization laser ion source (RILIS), in addition to several upgrades to the general RILIS set up. Several of these results will be presented along with a summary of the current RILIS status.
New RILIS ionization schemes have been successfully developed and tested for Ba, Li, Ge, Hg, and Cr. What is believed to be the world’s first resonance ion-ionization in a hot cavity was demonstrated, creating Ba2+ to meet a specific need to eliminate the problem of a surface ionized isobaric background from beams of 112-118Ba. The first demonstration of resonance laser ionization inside the VADIS, ISOLDE’s FEBIAD type ion source, was demonstrated off-line with gallium. This RILIS Mode operation of the VADIS cavity was then successfully applied on-line, coupling a molten Pb target with RILIS for the first time, to produce laser-ionized beams of neutron-deficient mercury isotopes[1].
[1] Gaffney (2014) https://cds.cern.ch/record/1953719
Author
Thomas Day Goodacre
(CERN)
Co-authors
Alexander Gottberg
(CERN / CENBG / CSIC)
Bernard Crepieux
(CERN)
Bruce Marsh
(CERN)
Christoph Seiffert
(Technische Universitaet Darmstadt (DE))
Dima Fedorov
(PNPI)
Joao Pedro Fernandes Pinto Ramos
(Ecole Polytechnique Federale de Lausanne (CH))
Ralf Erik Rossel
(Fachhochschule Wiesbaden (DE))
Richard Catherall
(CERN)
Sebastian Rothe
(CERN)
Tania Manuela De Melo Mendonca
(CERN)
Thierry Stora
(CERN)
Tim Giles
(CERN)
Valentine Fedosseev
(CERN)
