Ring-Based Electron Cooling System for the EIC

TL;DR

This paper proposes a ring-based electron cooling system for the Electron-Ion Collider (EIC) utilizing induction linac technology, capable of continuous cooling across a wide energy range with high electron beam current.

Contribution

It introduces a novel electron cooling system design based on proven induction linac technology for the EIC, enabling continuous operation over the full energy spectrum.

Findings

Capable of cooling proton beams from 100 to 270 GeV.

Provides 50-100 A electron beams circulating in a cooler ring.

Achieves emittance cooling times of less than 1-2 hours.

Abstract

This report describes a concept of an EIC cooling system, based on a proven induction linac technology with a dc electron beam. The system would operate in a full energy range of proton beams (100 - 270 GeV) and would provide 50-100 A electron beams, circulating in a cooler ring for 5 ms. Every 5 ms a new electron pulse would be injected into the cooler ring to provide continuous cooling at collisions. Operations with a 10-ms cycle is possible but it will reduce the cooling rates by ~30$\%$. The system is capable of delivering the required performance in the entire EIC energy range with emittance cooling times of less than 1-2 hours.