SLAC, Menlo Park, California, USA
The Microbunched Electron Cooling (MBEC) is a promising cooling technique that can find applications in future hadron and electron-ion colliders. In this paper we give a qualitative derivation of the cooling rate for MBEC and estimate the cooling time for the eRHIC electron-ion collider. We then argue that MBEC with two plasma amplification stages should be sufficient to overcome the emittance growth due to the intra-beam scattering in eRHIC.
Northern Illinois University, DeKalb, Illinois, USA
Northern Illinois Univerity, DeKalb, Illinois, USA
UNIST, Ulsan, Republic of Korea
Fermilab, Batavia, Illinois, USA
LBNL, Berkeley, California, USA
Beam loss due to space charge is a major problem at current and future high intensity particle accelerators. The space charge force can be compensated for proton or ion beams by creating a column of electrons with a charge distribution matched to that of the beam, maintaining electron-proton stability. The column is created by the beam ionizing short sections of high pressure gas. The ionization electrons are then shaped appropriately using electric and magnetic fields. The Integrable Optics Test Accelerator (IOTA) at Fermilab is a test bed for beam loss and instability mitigation techniques. Simulations using the particle-in-cell code, Warp, have been made to track the evolution of both the electron column and the beam over multiple passes. A 2.5 MeV proton beamline is under construction at IOTA, to be used to study the effect of the electron column on a space charge dominated beam.