SimTrack: A compact c++ code for particle orbit and spin tracking in accelerators

Luo, Y.

doi:10.1016/j.nima.2015.08.014

Cited by 4 publications

(2 citation statements)

References 19 publications

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“…Two kinds of beam-beam simulation models have been used for the EIC: strong-strong and weak-strong [3][4][5]. In the strong-strong model, both beams are represented by a half to 2 millions of macro-particles.…”

Section: Strong-strong Simulationmentioning

confidence: 99%

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Tolerances of Crab Dispersion at the Interaction Point in the Hadron Storage Ring of the Electron-Ion Collider

Luo,

Berg,

Blaskiewicz

et al. 2022

NAPAC 2022, Albuquerque, New Mexico, USA, 7-12 August 2022

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The Electron Ion Collider (EIC) presently under construction at Brookhaven National Laboratory will collide polarized high energy electron beams with hadron beams with luminosities up to 1 × 10 34 cm −2 s −1 in the center mass energy range of 20-140 GeV. Due to the detector solenoid in the interaction region, the design horizontal crabbing angle will be coupled to the vertical plane if uncompensated. In this article, we study the tolerances of crab dispersion at the interaction point in the EIC Hadron Storage Ring (HSR). Both strong-strong and weak-strong simulations are used. We found that there is a tight tolerance of vertical crabbing angle at the interaction point in the HSR.

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Section: Strong-strong Simulationmentioning

confidence: 99%

“…Next we calculate proton beam's dynamic aperture with vertical crab dispersion at IP with SimTrack [5]. For the latest HSR lattice, the horizontal phase advance between two side crab cavities is 5 degrees off 180 degrees so that the IR horizontal crab dispersion is not closed.…”

Section: Dynamic Aperture Calculationmentioning

confidence: 99%

Tolerances of Crab Dispersion at the Interaction Point in the Hadron Storage Ring of the Electron-Ion Collider

Luo,

Berg,

Blaskiewicz

et al. 2022

NAPAC 2022, Albuquerque, New Mexico, USA, 7-12 August 2022

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Summary of numerical noise studies for Electron-Ion Collider strong-strong beam-beam simulation

Luo

Hao

et al. 2023

J. Phys.: Conf. Ser.

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The Electron-Ion Collider (EIC) presently under construction at Brookhaven National Laboratory will collide polarized high energy electron beams with hadron beams with design luminosities up to 1 × 1034cm−2s−1 in center mass energy range of 20-140 GeV. We studied the planned electron-proton collisions using a Particle-In-Cell (PIC) based Poisson solver in strong-strong beam-beam simulation. We observed a much larger proton emittance growth rate than in weak-strong simulation. To understand the numerical noise and its impact on strong-strong simulation results, we carried out extensive studies to identify all possible causes for artificial emittance growth and quantify their contributions. In this article, we summarize our study activities and findings. This work will help us better understand the simulated emittance growth and the limits of the PIC based strong-strong beam-beam simulation.

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Fine decoupling test and simulation study to maintain a large transverse emittance ratio in hadron storage rings

Luo

I²,

Blaskiewicz³

et al. 2023

J. Phys.: Conf. Ser.

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In previous and existing hadron storage rings, the horizontal and vertical emittances are normally the same or very close. For the Hadron Storage Ring (HSR) of the Electron-Ion Collider (EIC), the design proton transverse emittance ratio is 10:1. To maintain this large emittance ratio, we need to have an online fine decoupling system to prevent transverse emittance exchange. For this purpose, we carried out fine decoupling experiments in the Relativistic Heavy Ion Collider (RHIC) and reviewed its previous operational data. Analytical prediction and numerical simulation are preformed to estimate how small the global coupling coefficient should be to maintain a 10:1 emittance ratio.

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SimTrack: A compact c++ code for particle orbit and spin tracking in accelerators

Cited by 4 publications

References 19 publications

Tolerances of Crab Dispersion at the Interaction Point in the Hadron Storage Ring of the Electron-Ion Collider

Tolerances of Crab Dispersion at the Interaction Point in the Hadron Storage Ring of the Electron-Ion Collider

Summary of numerical noise studies for Electron-Ion Collider strong-strong beam-beam simulation

Fine decoupling test and simulation study to maintain a large transverse emittance ratio in hadron storage rings

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