Design of the high-current ion injector for ions with z/A≥1/3 is described. The system consists of a laser-plasma generator based on a repetition rate CO2 laser, a vacuum target chamber with optical focusing lens, a beam extraction and transport system, and RFQ accelerator with z/A≥1/3. The goal of the work is to optimize parameters of all of the above components for maximum ion beam current at the output. Carbon ion energy spectra of CO2 laser produced plasma at radiation power density of 8•1011 W/cm2 were studied. Conditions for generating С4+÷С6+ ions in the vacuum chamber in use were found. The С4+ ion beam produced by the source was matched into the RFQ and measurements of its emittance and current are being performed.

1.
V.
Andreev
 et al, “
Progress work on high-current heavy ion linac for ITEP TWAC facility
” in
Proceedings of IPAC’10
, edited by
A.
Noda
, et al
(
IPAC’10 OC/ACFA
,
2010
)
2.
Yu. A.
Satov
 et al,
Instrum. Exp. Tech.
59
,
3
,
412
419
(
2016
)
3.
Yu. A.
Satov
 et al,
Instrum. Exp. Tech.
60
,
4
,
556
561
(
2017
)
4.
D.
Liakin
 et al,
Rev. Sci. Instr.
81
,
02B719
(
2010
)
5.
I.
Roudskoy
 et al,
Rev. Sci. Instr.
79
,
02B313
(
2008
)
6.
A.
Kolomiets
 et al, “
DYNAMION – the code for beam dynamics simulations in high currention linac
” in
EPAC’98 proceedings
, edited by
S.
Myers
, et al
(
Institute of Physics Publishing
,
Bristol
,
1998
) p.
755
757
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