Cancellation of the ion deflection due to electron-suppression magnetic field in a negative-ion accelerator

Journal Article · Sat Feb 15 00:00:00 EST 2014 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4826581· OSTI ID:22253745

Agostinetti, P.; Aprile, D.; Marconato, N.; Veltri, P. ^[1]

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1. Consorzio RFX, Association EURATOM-ENEA, Corso Stati Uniti 4, 35127 Padova (Italy)

A new magnetic configuration is proposed for the suppression of co-extracted electrons in a negative-ion accelerator. This configuration is produced by an arrangement of permanent magnets embedded in one accelerator grid and creates an asymmetric local magnetic field on the upstream and downstream sides of this grid. Thanks to the “concentration” of the magnetic field on the upstream side of the grid, the resulting deflection of the ions due to magnetic field can be “intrinsically” cancelled by calibrating the configuration of permanent magnets. At the same time, the suppression of co-extracted electrons can be improved.

• OSTI ID: 22253745
• Journal Information: Review of Scientific Instruments, Vol. 85, Issue 2; Conference: ICIS 2011: 14. international conference on ion sources, Giardini-Naxos, Sicily (Italy), 12-16 Sep 2011; Other Information: (c) 2013 Euratom; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ACCELERATORS
ANIONS
ASYMMETRY
CANCELLATION
CONFIGURATION
ELECTRONS
GRIDS
INHIBITION
MAGNETIC FIELDS
PERMANENT MAGNETS