Tc. Sangster et al., STATUS OF EXPERIMENTS LEADING TO A SMALL RECIRCULATOR, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 415(1-2), 1998, pp. 310-314
A heavy ion linear induction accelerator is considered to be the leadi
ng driver candidate for an Inertial Fusion Energy reactor. To deliver
a space-charge-dominated beam at the appropriate energy (several GeV),
such an accelerator would be several kilometers in length. Since tota
l length has a strong influence on accelerator cost, we are considerin
g the potential advantages and practical implementation of a recircula
ting induction accelerator. To address the critical scientific and tec
hnical challenges of a recirculating space-charge-dominated heavy ion
beam, we have begun to develop the elements of a scaled ''small recirc
ulator''. An operating recirculator must demonstrate full beam control
including multi-lap operation, beam insertion/extraction, acceleratio
n and pulse compression. At present, experiments have been conducted u
sing a 2 mA, 80 keV K+ beam transported through a 45 degrees bend; exp
eriments on a 90 degrees bend with five induction modulators will begi
n soon. This paper briefly summarizes the recirculator specifications
and operational features and reports the latest experimental data as w
ell as the developmental status of beam diagnostics. (C) 1998 Elsevier
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