COOLING PERFORMANCE IN A DUAL ENERGY STORAGE RING COOLER*

Abstract

The lon­gi­tu­di­nal and trans­verse emit­tance growth in hadron beams due to in­tra-beam scat­ter­ing (IBS) and other heat­ing sources de­te­ri­o­rate the lu­mi­nos­ity in a col­lider. Hence, a strong hadron beam cool­ing is re­quired to re­duce and pre­serve the emit­tance. The cool­ing of high en­ergy hadron beam is chal­leng­ing. We pro­pose a dual en­ergy stor­age ring-based elec­tron cooler that uses an elec­tron beam to ex­tract heat away from hadron beam in the cooler ring while the elec­tron beam is cooled by syn­chro­tron ra­di­a­tion damp­ing in the high en­ergy damp­ing ring. In this paper, we pre­sent a de­sign of a dual en­ergy stor­age ring-based elec­tron cooler. Fi­nally, the cool­ing per­for­mance is sim­u­lated using Jef­fer­son Lab Sim­u­la­tion Pack­age for Elec­tron Cool­ing (JSPEC) for pro­ton beams at the top en­ergy of 275 GeV for Elec­tron-Ion Col­lider.