A three-dimensional numerical modelling of the PHOENIX-SPES charge breeder based on the Langevin formalism

A Charge Breeder (CB) is a crucial device of an ISOL facility, allowing post-acceleration of radioactive ions: it accepts an incoming 1+ beam, then multiplying its charge with a highly charged q+ beam as an output. The overall performances of the facility (intensity and attainable final energy) crit...

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Bibliographic Details
Published in:Review of scientific instruments 2016-02, Vol.87 (2), p.02B507-02B507
Main Authors: Galatà, A, Mascali, D, Neri, L, Torrisi, G, Celona, L
Format: Article
Language:English
Subjects:
ACCELERATION
ACCURACY
BREEDING
Computer simulation
COMPUTERIZED SIMULATION
ELECTRON CYCLOTRON-RESONANCE
FORECASTING
INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ION BEAMS
IONS
Mathematical models
Model accuracy
OPTIMIZATION
PLASMA
PLASMA POTENTIAL
RUBIDIUM 85
Scientific apparatus & instruments
SOLAR PROTONS
Three dimensional models
THREE-DIMENSIONAL LATTICES
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Summary:A Charge Breeder (CB) is a crucial device of an ISOL facility, allowing post-acceleration of radioactive ions: it accepts an incoming 1+ beam, then multiplying its charge with a highly charged q+ beam as an output. The overall performances of the facility (intensity and attainable final energy) critically depend on the charge breeder optimization. Experimental results collected along the years confirm that the breeding process is still not fully understood and room for improvements still exists: a new numerical approach has been therefore developed and applied to the description of a (85)Rb(1+) beam capture by the plasma of the 14.5 GHz PHOENIX ECR-based CB, installed at the Laboratoire de Physique Subatomique et de Cosmologie (LPSC), and adopted for the Selective Production of Exotic Species project under construction at Laboratori Nazionali di Legnaro. The results of the numerical simulations, obtained implementing a plasma-target model of increasing accuracy and different values for the plasma potential, will be described along the paper: results very well agree with the theoretical predictions and with the experimental results obtained on the LPSC test bench.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.4935010