LINAC2026 - 33rd Linear Accelerator Conference

Design and stability analysis of a quadrupole demagnifier for emittance exchange-based transverse-to-longitudinal density modulation frequency upshift

Not scheduled

2h

Daejeon Convention Center

Poster Presentation MC1.A01: Beam Dynamics, beam simulations, beam transport Poster Session

Speaker

Buse Naz Temizel Ozdemir (Northern Illinois University)

Description

A project is underway to explore the generation of sub-micron longitudinal beam modulations—with the long-term goal of building a compact X-ray source. Our system uses a transmission electron microscope (TEM) grid to impose a transverse density modulation on the initial beam, and an emittance exchange (EEX) beamline to convert that transverse modulation into a longitudinal modulation. However, the TEM grid alone results in too large of a longitudinal modulation. We present the design of a quadrupole demagnifier that reduces the modulation period and prepares the beam for injection into the EEX beamline. The tunability and operational stability of the demagnifier optics are analyzed, and the impact of errors on the final longitudinal modulation is evaluated. Simulations were performed using General Particle Tracer (GPT) and ELEGANT.