What question did this study set out to answer?

To update the HSR-IR2 lattice design for effective cooling in the Electron-Ion Collider.

February 2, 2026Open Access

Lattice design for Low Energy Cooling in EIC HSR-IR2

Key Points

To update the HSR-IR2 lattice design for effective cooling in the Electron-Ion Collider.
Redesign of the lattice geometry for yellow-to-yellow configuration
Optimization of injection optics
Assessment of low energy cooling requirements
Enhanced cooling efficiency in the modified lattice design
Improved physical aperture capacity for electron-ion operations
Compliance with evolving EIC requirements

Abstract

Insertion Region at two o'clock (IR2) of the Relativistic Heavy Ion Collider will be modified to provide effective cooling for the Electron-Ion Collider (EIC). This paper summarizes the update of the HSR-IR2 lattice design to meet the evolving requirements of the EIC. The geometry has been redesigned to satisfy the yellow-to-yellow configuration. The injection optics is optimized to satisfy the Low Energy Cooling requirements and physical aperture.

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Authors

D. Xu

J. Berg

Steve Peggs

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Lattice design for Low Energy Cooling in EIC HSR-IR2

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Abstract

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