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Gabor lens focusing of a negative ion beam

Conference ·
OSTI ID:6087358
Gabor or plasma lenses have previously been used to focus intense beams of positive ions at energies from 10 keV to 5 MeV. It is the large electrostatic field of the non-neutral plasma in the Gabor lens which is responsible for the focusing. Focusing an ion beam with a given sign of charge in a Gabor lens requires a non-neutral plasma with the opposite sign of charge as the beam. A Gabor lens constructed at Fermilab has been used to focus a 30 keV proton beam with good optical quality. We discuss studies of the action of a Gabor lens on a beam of negative ions. A Gabor lens has been considered for matching an H/sup /minus// beam into an RFQ in the redesign of the low energy section of the Fermilab linac. 9 refs., 3 figs., 1 tab.
Research Organization:
Fermi National Accelerator Lab., Batavia, IL (USA)
DOE Contract Number:
AC02-76CH03000
OSTI ID:
6087358
Report Number(s):
FNAL/C-89/115; CONF-890335-212; ON: DE89014170
Country of Publication:
United States
Language:
English

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