ARC DISCHARGE ION SOURCE DEVELOPMENT AT CERN ISOLDE

Within a Marie Curie Early Stage Training project at CERN, a detailed study (experimental, analytical and numerical) of the standard ISOLDE FEBIAD ion sources has been done. A new theoretical model of the global source behavior could be inferred, based on the acquired experimental data. The source model already served to the development of two FEBIAD prototypes which improved the 1+ ionization efficiencies for the noble gases by 5 to 20 times (depending on element) This development can now serve to future ion source optimizations, for specific user or facility requirements around the world, especially for the production of high intensity radioactive beams.Original Abstract: In cadrul unui proiect european desfaasurat la CERN, de tip Marie Curie Early Stage Training, a fast realizat un studiu detaliat (experimental, analitic si numeric) al surselor de ioni de tip FEBIAD, folosite in mod curent la facilitatea experimentalaa ISOLDE. Un nou model analitic a putut fi dedus pentru comportamentul global al sursei, bazat pe datele experimental acumulate. Acest model a fost deja implementat pentru realizarea a douaa prototipuride surse FFEBIAD, care au imbunaataatit eficacitaatile de ionizare 1+ ale gazelor nobile de 5 pana la 20 de ori (in functie de element). Modelul poate acum servi la optimizari viitoare ale surselor, pentru cerinte specifice ale diferitor tipuri de utilizatori sau ale diferitelor facilitaati experimental din lume, in special pentru producerea de fascicule intense de ioni radioactivi.