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<p>The Korea Multi-purpose Accelerator Complex (KOMAC) is proposing an energy upgrade for the existing 100&#xa0;MeV proton linear accelerator (linac). The design for this extended linac is based on a normal-conducting separated-drift tube linac (SDTL) structure. The drift tubes (DTs) of the SDTL share the same structural configuration as those of a drift tube linac (DTL); however, they do not incorporate any quadrupole magnets within the DTs. Instead, transverse beam focusing is achieved through the incorporation of a doublet focusing structure placed between the SDTL tanks. The proposed configuration includes 5 DTs per SDTL tank, resulting in a 6-cell SDTL design. A total of 16 SDTL tanks are required to accelerate the proton beam from 100 to 200&#xa0;MeV. Beam dynamics simulations and comprehensive error analyses were conducted to assess the tolerances of the linac design. Furthermore, a correction scheme was implemented to enhance the lattice tolerance by installing steerers. This paper presents preliminary studies on beam dynamics and error analysis, including orbit correction results, for the 200&#xa0;MeV SDTL linac conducted at KOMAC.</p>

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Beam dynamics studies for SDTL-based 200 MeV energy upgrade of KOMAC proton linac

  • 期刊论文

  • 发表日期：

    2026年2月26日

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  • Seunghyun Lee,
  • Seok-Ho Moon,
  • Sungbin Park,
  • Han-Sung Kim,
  • Hyeok-Jung Kwon

摘要

The Korea Multi-purpose Accelerator Complex (KOMAC) is proposing an energy upgrade for the existing 100 MeV proton linear accelerator (linac). The design for this extended linac is based on a normal-conducting separated-drift tube linac (SDTL) structure. The drift tubes (DTs) of the SDTL share the same structural configuration as those of a drift tube linac (DTL); however, they do not incorporate any quadrupole magnets within the DTs. Instead, transverse beam focusing is achieved through the incorporation of a doublet focusing structure placed between the SDTL tanks. The proposed configuration includes 5 DTs per SDTL tank, resulting in a 6-cell SDTL design. A total of 16 SDTL tanks are required to accelerate the proton beam from 100 to 200 MeV. Beam dynamics simulations and comprehensive error analyses were conducted to assess the tolerances of the linac design. Furthermore, a correction scheme was implemented to enhance the lattice tolerance by installing steerers. This paper presents preliminary studies on beam dynamics and error analysis, including orbit correction results, for the 200 MeV SDTL linac conducted at KOMAC.