Intense ion beams from an RFQ linac can be used to investigate the plasma experiments. At present, a ~4He~+ beam with the mean current of 2 mA in a macropulse is focused to about 1.1 mm~2 on the target surface. The output-beam is switched from a beam dump to the target within 50 ns by using a fast electrostatic beam kicker. This kicker synchronizes to the RF-pulse, and it is used to control the timing between the beam-target interaction and the diagnostic equipment. The experiments were performed with a gas target. The behavior of the ion beam-produced plasma was observed.
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