MIST-2, a new multicusp H2+ ion source, achieved about 7 mA total current in first tests, doubling MIST-1's output, but its H2+ fraction is only estimated at about 60%.
IsoDAR@Yemilab: Preliminary Design Report -- Volume I: Cyclotron Driver
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This Preliminary Design Report (PDR) describes the IsoDAR electron-antineutrino source in two volumes which are mostly site-independent and describe the cyclotron driver providing a 60 MeV, 10 mA proton beam (this Volume); and the medium energy beam transport line (MEBT) and target (Volume II). The IsoDAR driver and target will produce about 1.15e23 electron-antineutrinos over five years. Paired with a kton-scale liquid scintillator detector, it will enable a broad particle physics program including searches for new symmetries, new interactions and new particles. Here in Volume I, we describe the driver, which includes the ion source, low energy beam transport, and cyclotron. The latter features Radio-Frequency Quadrupole (RFQ) direct axial injection and represents the first accelerator purpose-built to make use of so-called vortex motion.
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The MIST-1 and MIST-2 multicusp ion sources for high-current H$_2^+$ beams
MIST-2, a new multicusp H2+ ion source, achieved about 7 mA total current in first tests, doubling MIST-1's output, but its H2+ fraction is only estimated at about 60%.