6533b7d2fe1ef96bd125f5d5

RESEARCH PRODUCT

Space charge and microbunching studies for the injection arc of MESA

Aamna KhanOliver Boine-frankenheimChristian Stoll

subject

PhysicsHistory05 Beam Dynamics and EM Fieldsbusiness.industryElectronInstabilitySpace chargeAccelerator PhysicsComputer Science ApplicationsEducationD08 High Intensity in Linear Accelerators - Space Charge HalosArc (geometry)Transverse planeOpticsBeamlinePhysics::Accelerator PhysicsThermal emittancebusinessBeam (structure)

description

For intense electron bunches traversing through bends, as for example the recirculation arcs of an ERL, space charge (SC) may result in beam phase space deterioration. SC modifies the electron transverse dynamics in dispersive regions along the beam line and causes emittance growth for mismatched beams or for specific phase advances. On the other hand, longitudinal space charge together with dispersion can lead to the microbunching instability. The present study focuses on the 180° low energy (5 MeV) injection arc lattice for the multi-turn Mainz Energy-recovering Superconducting Accelerator (MESA), which should deliver a CW beam at 10⁵ MeV for physics experiments with an internal target. We will discuss matching conditions with space charge together with the estimated microbunching gain for the arc. The implication for the ERL operation will be outlined, using 3D envelope and tracking simulations.

yearjournalcountryeditionlanguage
2018-09-01Journal of Physics: Conference Series
https://doi.org/10.1088/1742-6596/1067/6/062022