Speakers
Description
Lead talk session A-3.
Phase space painting into non-planar modes for space charge mitigation:
Recent experiments at the Spallation Neutron Source have demonstrated a new technique referred to as 'Eigenpainting'. During charge exchange injection, phase space painting can be used to build the beam distribution in a ring by controlling the phase space coordinates throughout the injection cycle. Eigenpainting extends standard painting techniques to non-planar optics in fully coupled rings. This technique should allow exceptionally bright beams, as the beam size is determined by the larger of two eigenemittances. By painting preferentially into one eigenmode and keeping the other emittance small, space charge can be mitigated while keeping 4D emittance low. This talk will discuss recent efforts to explore this the limits of this technique for mitigating space charge effects in rings, and benchmarks against Particle-In-Cell simulations.