Abstract
In a first beam dynamics validation experiment for a new Pulse Line Ion Acceleration (PLIA) concept, the predicted energy amplification and beam bunching were experimentally observed. Beam energy modulation of $\ensuremath{-}80$ to $+150\text{ }\text{ }\mathrm{keV}$ was measured using a PLIA input voltage waveform of $\ensuremath{-}21$ to $+12\text{ }\text{ }\mathrm{kV}$. Ion pulses accelerated by 150 keV, and bunching by a factor of 4 were simultaneously achieved. The measured longitudinal phase space and current waveform of the accelerated beam are in good agreement with 3D particle-in-cell simulations.
Highlights
Intense ion pulses of moderate energy offer an attractive driver for heating dense matter uniformly to extreme conditions, because their energy deposition is nearly classical and shock-free
Simultaneous transverse and longitudinal beam compression, along with rapid beam acceleration, are being studied as a means of generating such beams, which will be used for warm dense matter (WDM) [1,2,3], high energy density physics, and fusion [4] studies
The major advantage of the Pulse Line Ion Acceleration (PLIA) concept is its potential for a significant reduction in the cost per MeV compared to induction linacs, for example
Summary
Intense ion pulses of moderate energy offer an attractive driver for heating dense matter uniformly to extreme conditions, because their energy deposition is nearly classical and shock-free. In parallel with beam compression studies, for the same purposes, a new method of accelerating these intense ion bunches was conceived [19,20] and studied using analytic theory and simulations [19,21,22,23,24,25]. This pulse line ion accelerator (PLIA) can accelerate beams of any pulse length, in principle, but is best suited as an accelerator for intense bunches with pulse lengths of tens of centimeters. We present initial experimental results of the PLIA as a proof of principle of the concept [20]
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