The Electron-Ion Collider (EIC), a next-generation accelerator facility, is being jointly developed by Brookhaven National Laboratory (BNL) and Jefferson Lab (JLab), and will be constructed at BNL. The EIC design builds upon the existing RHIC heavy-ion infrastructure, transforming the RHIC rings into the Hadron Storage Ring (HSR) with necessary modifications. To ensure optimal performance, it is critical to accurately match the beam from the injectors to the HSR in six-dimensional phase space, in addition to the match of positions and angles. Inadequate matching can lead to emittance growth, which negatively impacts the achievable luminosity of the collider. This report outlines the key constraints involved in the matching process and presents a systematic approach to achieving high-fidelity beam matching while preserving emittance quality.

Two types of beam abort mechanisms, namely, the External Abort System and the Internal Abort System for the Electron Ion Collider (EIC) Electron Storage Ring (ESR) are devised, designed and compared. Both mechanisms will be located in the Interaction region 2 (IR2). The External Abort System utilizes the ISABELLE Spectrometer tunnel to facilitate an extraction beamline and a beam dump, and the Internal Abort System generates a local orbit bump within the storage ring lattice to guide the electron beam into the beam dump. This article discusses the design of both systems, including the orbit bump design and ESR lattice modification, the resonant AC dipole design for the Internal Abort System, lattice simulation, the beam dump design and simulations using FLUKA, beampipe vacuum and impedance considerations near the beam dump.

The Electron-Ion Collider (EIC), a next-generation accelerator facility, is being jointly developed by Brookhaven National Laboratory (BNL) and Jefferson Lab (JLab), and will be constructed at BNL. The EIC design builds upon the existing RHIC heavy-ion infrastructure, transforming the RHIC rings into the Hadron Storage Ring (HSR) with necessary modifications. To ensure optimal performance, it is critical to accurately match the beam from the injectors to the HSR in six-dimensional phase space, in addition to the match of positions and angles. Inadequate matching can lead to emittance growth, which negatively impacts the achievable luminosity of the collider. This report outlines the key constraints involved in the matching process and presents a systematic approach to achieving high-fidelity beam matching while preserving emittance quality.

The Electron-Ion Collider (EIC), to be constructed based off the existing RHIC facility, will collide electrons with multiple species of hadrons. The Hadron Storage Ring (HSR), based largely on the Yellow RHIC ring, will accommodate three times the number of bunches compared to RHIC. A completely new HSR injection system will be developed to meet these requirements. This report presents the design of the HSR injection system, including the warm transfer lines, the septum design, the injection lattice optimized to reduce the required kicker strength, and the design and testing of the injection stripline kicker.