1–6 Jun 2025
Taipei International Convention Center (TICC)
Asia/Taipei timezone

Characterization of beam optics considering fringe fields of quadrupole magnets in a LIPAc 5 MeV beamline

WEPM112
4 Jun 2025, 16:00
2h
Exhibiton Hall A _Magpie (TWTC)

Exhibiton Hall A _Magpie

TWTC

Poster Presentation MC5.D01 Beam Optics Lattices, Correction Schemes, Transport Wednesday Poster Session

Speaker

Jibong Hyun (National Institutes for Quantum Science and Technology)

Description

The 5 MeV beamline of Phase B+ which is an intermediate commissioning stage of the Linear IFMIF Prototype Accelerator (LIPAc) consists of an MEBT, an MEBT Extension Line (MEL) where the SRF will be installed, a HEBT, and a beam dump. It has 17 quadrupole magnets, and some quads have small aperture-to-length ratios and are also densely installed in the MEBT and HEBT sections. In the early stages of Phase B+, we optimized the beam optics with the conventional hard-edge model for all the quads. However, we observed unwanted particle losses and discrepancies in the rms beam sizes between measurements and simulations due to significant fringe fields and magnetic interference. After considering the field maps and the magnetic interference of the quads in the beam optics, we could obtain the matching beam and reduce the particle losses. In this paper, we characterize the beam optics by comparing the transfer matrices with and without the fringe fields and the interferences using a conventional hard-edge model and a more accurate hard-edge model equivalent to the field maps.

Region represented Asia
Paper preparation format Word

Author

Jibong Hyun (National Institutes for Quantum Science and Technology)

Co-authors

Akihiko Mizuno (Japan Synchrotron Radiation Research Institute) Beatriz Branas Lasala (Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas) Concepcion Oliver (Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas) Hervé Dzitko (Fusion For Energy) IFMIF/EVEDA Integrated Project Team (IFMIF/EVEDA Project Team) Kai Masuda (IFMIF/EVEDA Project Team) Keitaro Kondo (National Institutes for Quantum Science and Technology) Ken Takayama (High Energy Accelerator Research Organization) Nicolas Chauvin (Commissariat à l'Énergie Atomique et aux Énergies Alternatives) Yann Carin (Fusion For Energy)

Presentation materials

There are no materials yet.