Speaker
Description
Electron storage ring light sources rely exclusively on RF cavities to restore energy to the beam that is lost to photon emission. A limitation of RF is that it can store particles in only a small region of the RF waveform, yielding a bunched beam. Only a few percent of the ring circumference actually contains charge. Thus, high average current entails high peak current. While high average current and low emittance are the target parameters of the light source, the limitations come from peak current effects.
With recent advances, induction cells are potential replacements for RF cavities. The cells are compact, and a small number of them could be orchestrated to provide DC, or nearly DC, restoring voltage, yielding a continuous, unbunched beam.
SLAC is investigating the physics of continuous beam induction storage rings. Potential applications include continuous beam light sources with smaller emittances and higher currents, and also coherent emission light sources utilizing steady state microbunching (SSMB). For applications including SSMB, we are also investigating isochronous rings based on anti-bend cell acromats.
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