Tech Note Information

Name

Electron-Ion Collider (EC)

BNL Number

BNL-230151-2026-TECH

BNL Series Number

230151

Description/Abstract

In this project, we improve beam stability for the Electron-Ion Collider. Magnetic field errors can reduce beam stability, making it essential to identify the field errors that have the greatest impact on accelerator performance. However, this is particularly challenging because beam stability depends on the complex interactions of many magnetic field errors, resulting in a high-dimensional and nonlinear optimization problem. We determine which field errors are the most influential for the large physical aperture superconducting magnet B2PF, a critical magnet in the Interaction Region (IR) in the Hadron Storage Ring (HSR). We complete and analyze nearly 30,000 simulations on the Brookhaven National Laboratory Linux Cluster by varying 18 nonlinear magnetic field errors. We evaluate beam stability using the dynamic aperture and the tune diffusion. We identify the field errors that most strongly influence beam stability and establish quantitative field error tolerances that improve accelerator performance.

Publication Date

8/26/2026

Submittal Date

8/26/2026

Author Information

Primary Author

S. Franco de la Matta

BNL Author

Y. Luo

Other Authors

Luo,Y.

DOE Subject Category

PARTICLE ACCELERATORS