Speaker
Description
The High-Current H2+ Cyclotrons (HCHC) were originally conceived for the IsoDAR experiment, which would place an intense accelerator-driven electron-antineutrino source near a high-resolution underground scintillator detector to enable precision beyond-standard-model searches (e.g., sterile neutrino oscillations). The HCHC design accelerates 5 mA of H2+ in a compact cyclotron, exploiting vortex motion — a multiparticle collective effect that can stabilize the radial beam size — to reach proton-equivalent currents roughly an order of magnitude beyond commercial cyclotrons. The beam is efficiently bunched by a Radio-Frequency Quadrupole (RFQ) axially embedded in the cyclotron yoke, placing the RFQ exit within 25 cm of the cyclotron median plane. Upon stripping the single binding electron of the H2+ (during or after extraction), 10 mA of protons are delivered on target. Because the novel aspects of this design are confined to the first six turns, the concept can be readily adapted to energies from 1.5 to 80 MeV/amu (HCHC-X, where X denotes the energy in MeV/amu). We present the latest HCHC-X family designs, high-fidelity IBSimu/WARP/OPAL simulations incorporating space charge and conducting boundary conditions, and the fabrication status of a 1.5 MeV/amu prototype.
Funding Agency
NSF Grants PHY-2012897, PHY-1912764, PHY-2411745, and PHY-1626069. DOE Grants DESC0024138 and DE-SC0024914.
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