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A solid-state Marx generator driven Einzel lens chopper
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View: Figures


Image of FIG. 1.
FIG. 1.

Schematic view of an induction synchrotron.

Image of FIG. 2.
FIG. 2.

A photograph of the KEK digital accelerator and its outline.

Image of FIG. 3.
FIG. 3.

ECRIS with an extraction system and an Einzel lens in a HVT.

Image of FIG. 4.
FIG. 4.

Simulated tracks of ions from the cathode to the anode and from the anode through the Einzel lens, where V 0 = 14 kV and V 1 = 8–17.5 kV.

Image of FIG. 5.
FIG. 5.

Beam current passing through the Einzel lens as observed with a Faraday cup downstream vs. the Einzel lens electrode voltage V 1.

Image of FIG. 6.
FIG. 6.

Four-stage solid-state Marx generator used for the Einzel lens chopper.

Image of FIG. 7.
FIG. 7.

Equivalent circuit of each stage (left) and pulse voltage profile (right).

Image of FIG. 8.
FIG. 8.

Overview of the experimental setup (STV1,2: Steering Magnet, BM1,2: Bending Magnet).

Image of FIG. 9.
FIG. 9.

5 ms ion beam pulse monitored with the Faraday cup denoted in Fig. 8.

Image of FIG. 10.
FIG. 10.

5 μs chopped pulse profiles, which are chopped at different times from the pulse head of a 5 ms ion pulse.


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Scitation: A solid-state Marx generator driven Einzel lens chopper