?뷻e Proton Engineering Frontier Project: 1. Accelerator Development

Kim, Kui Young; Cho, Yong-Sub; Kim, Jun Yeon; Kim, Kye Ryung; Cho, Byung-Ho

doi:10.3938/jkps.56.1937

Cited by 10 publications

(2 citation statements)

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“…The number of facilities included in the near future plan is nine. The scientific research facilities in operation are a 100 MeV (final goal: 1 GeV), 20 mA proton accelerator facility KOMAC [2], a third-generation synchrotron light source PLS-II with 3 GeV, 400 mA electron storage ring [3], and a free electron laser PAL-XFEL using an 11 GeV, 264 W electron beam [4]. A heavy-ion accelerator RAON using a 200 MeV n −1 , 400 kW U-238 beam [5] is being built, and the construction of a fourth-generation storage ring [6] is scheduled to start in 2022.…”

Section: Large Accelerator Facilities and Regulation In Koreamentioning

confidence: 99%

An alternative proposal for the regulatory framework of the large accelerator facilities in the Korean Nuclear Safety Act

Jung¹,

Lee²,

Lee³

et al. 2021

J. Radiol. Prot.

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Large accelerator facilities for scientific research and particle accelerators for radiotherapy have been constructed in Korea. The environments requiring radiological protection procedures have changed substantially and the legal requirements have also increased. However, the same regulatory criteria that are applied to small radiation-generating devices also apply to large accelerator facilities. This study evaluates an approach that uses new criteria based on radiological risk to classify different types of large accelerator facilities. To inform this study, regulations and licensing procedures adopted in various countries were reviewed. The radiological risks from different types of particle accelerators and different types of accelerated particles were investigated in relation to current and planned large accelerators in Korea. The investigation was based on neutron yield and induced radioactivity calculations undertaken using the Monte-Carlo code FLUKA. Based on this analysis, we propose two categories for large accelerator facilities. In the process of the facility construction through to getting an operation permit, we also propose a graded approach, which would require changes in the Korean Nuclear Safety Act. A two-step licensing procedure with a prior review and a final permit for accelerator operation is very practical and conservative in the view of radiation protection. The review process for the revision of the Nuclear Safety Act is currently in progress and a major aspect of this revision reflects the results of this study.

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Section: Large Accelerator Facilities and Regulation In Koreamentioning

confidence: 99%

An alternative proposal for the regulatory framework of the large accelerator facilities in the Korean Nuclear Safety Act

Jung¹,

Lee²,

Lee³

et al. 2021

J. Radiol. Prot.

View full text Add to dashboard Cite

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“…The 100-MeV proton linac is composed of a 50-keV injector; a 3-MeV radio frequency quadrupole (RFQ); a 20-MeV drift tube linac (DTL)-I; a 100-MeV DTL-II; and a medium energy beam transport (MEBT) between DTL-I and DTL-II, which extracts 20-MeV proton beams in the middle of the accelerator. A detailed description of the proton accelerator can found elsewhere [ 1 ].…”

Section: Introductionmentioning

confidence: 99%

Operational status of and upgrade plan for the 100-MeV proton linac at the Korea multi-purpose accelerator complex

Kim

Kwon

Kim

et al. 2022

J. Korean Phys. Soc.

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The report presents the operation status of and upgrade plan for the 100-MeV proton linac at the Korea Multi-purpose Accelerator Complex (KOMAC). First, an operation history of the 100-MeV linac since its commissioning in 2013, such as operation hours, user services, machine availabilities, and downtimes, is discussed. Second, the status of the beamlines in service or under development is described in a detailed manner. Finally, the Korea Spallation Neutron Source (KSNS), which is part of the upgrade plan for the 100-MeV proton linac to expand its utilization fields, is discussed.

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High birefringence and near‐zero dispersion control of nonlinear photonic crystal fibers with a double‐cladded coaxial core

Kim

2023

Micro & Optical Tech Letters

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Optical propagation characteristics of high birefringence (HB), near-zero chromatic dispersion, and small effective mode area are first investigated along with simultaneously effective controllability for the new double-cladded coaxial core photonic crystal fibers with the breakthrough air-hole defects at the middle-top, middle-bottom, right-top, and left-bottom, as pairs, which enable the adaptation of novel systematic approach for design goals in the inner first hexagonal cladding layer. Compared with results (around 3.2 × 10 −4 ) of well-known HB optical fibers, superior performance for preserving the lightwave polarization state by about three times higher HB levels has been achieved with additive advantages of fabrication from only pure fused silica material and broadly unlimited stable single-mode operation.

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?뷻e Proton Engineering Frontier Project: 1. Accelerator Development

Cited by 10 publications

References 0 publications

An alternative proposal for the regulatory framework of the large accelerator facilities in the Korean Nuclear Safety Act

An alternative proposal for the regulatory framework of the large accelerator facilities in the Korean Nuclear Safety Act

Operational status of and upgrade plan for the 100-MeV proton linac at the Korea multi-purpose accelerator complex

High birefringence and near‐zero dispersion control of nonlinear photonic crystal fibers with a double‐cladded coaxial core

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