WEX01
BNL, Upton, New York, USA
The Low Energy RHIC electron Cooler (LEReC) was recently commissioned at BNL. LEReC is the first electron cooler based on RF acceleration of electron bunches (previous electron coolers all used DC beams). Bunched electron beams are necessary for cooling hadron beams at high energies. The challenges of such an approach include generation of electron beams suitable for cooling, delivery of electron beams of the required quality to the cooling sections without degradation of beam emittances and energy spread, achieving the required small angles between electrons and ions in the cooling sections, precise velocity matching between the two beams, high-current operation of the electron accelerator, as well as several physics effects related to bunched beam cooling. Following successful commissioning of the electron accelerator in 2018, the focus of the LEReC project in 2019 was on establishing electron-ion interactions and demonstration of the cooling process. Here we report on the first demonstration of Au ion cooling in RHIC using this new approach.
on behalf of the LEReC team
