19–24 May 2024
Music City Center
US/Central timezone

Studies of space-charge compensation of positive ions by creating time-dependent secondary electrons in low-energy beam transport line

MOPC61
20 May 2024, 16:00
2h
Country (MCC Exhibit Hall A)

Country

MCC Exhibit Hall A

Poster Presentation MC1.A08 Linear Accelerators Monday Poster Session

Speaker

Emre Cosgun (Ulsan National Institute of Science and Technology)

Description

The space-charge neutralization of an ion beam by created electrons when the beam ionizes the gas is investigated using a three-dimensional electrostatic particle-in-cell code. Different kinds of injected gases are considered, and their space-charge compensation transient times are compared. The created secondary electrons by the beam collision with neutral gas along the beam trajectories are loaded in the simulation by a Monte Carlo generator, and their space charge contribution is added to the primary beam space charge densities. The injection and accumulation of secondaries are time-dependent and this process is continued until total space charge densities reach a steady state. In this study, a 2.4-meter LEBT line with two solenoid magnets is considered. Usually, the proton beam energy is 25 keV and the current level is around 10-15 mA. Additionally, beam extraction studies are conducted, and the extracted beam is used in both IBSIMU and Tracewin codes for LEBT lines to validate the results.

Region represented Asia
Paper preparation format LaTeX

Primary author

Emre Cosgun (Ulsan National Institute of Science and Technology)

Co-authors

Dong-Hwan Kim (Korea Multi-purpose Accelerator Complex) Moses Chung (Pohang University of Science and Technology) Seok Ho Moon (Korea Multi-purpose Accelerator Complex)

Presentation materials

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