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KEK

Light Source Division (Accelerator Div. VII)


Head of Division: KOBAYASHI, Yukinori

Light Source Division operates two storage rings at the Photon Factory (PF and PF-AR), which is a pioneer of synchrotron light sources in the world. It also performs R&D for an Energy Recovery Linac (ERL) as a future light source.

[Major Research Projects]

Magnet and Orbit (Light Source I)

We are studying about the beam orbit in the storage ring, and conducting research and development on the related component such as DC electromagnet and its power source, pulsed electromagnet for beam injection and its power source and so on. For the future light source (ERL), we are doing research and development about the lattice design, beam dynamics including bunch compression, the advanced electromagnetic system aimed at stable beam orbit.

NamePositionField
NAKAMURA, NorioProf., Group Leader
KOBAYASHI, YukinoriProf.
HARADA, KentaroAssoc. Prof.
TAKAKI, HiroyukiAssoc. Prof.
OZAKI, ToshiyukiAssoc. Prof.
SHIMADA, MihoAssoc. Prof.
UEDA, AkiraExpert Engineer
NAGAHASHI, ShinyaEngineer
KONSTANTINOVA, OlgaPostdoctoral Fellow

RF (Light Source II)

We are conducting research and development on the cavities, high-power klystron, high-voltage power supplies and low-power RF control system of the storage ring. For the future light source (ERL), we are doing research and development on the buncher cavities and studying a beam instability associated with a higher-order mode and ion trapping.

NamePositionField
SAKANAKA, ShogoProf., Group Leader
YAMAMOTO, NaotoAssistant Prof.
TAKAHASHI, TakeshiExpert Engineer

Vacuum (Light Source III)

We are improving and maintaining the vacuum system and the superconducting wiggler. We are also conducting research and development on the vacuum system related with a replacement of new-type monitoring systems and insertion devices. As a result of these R&D, beam instabilities are restrained and storage of electron beam with higher current, longer lifetime and higher stability become possible. We are doing research and development about advanced vacuum systems for the future light source (ERL).

NamePositionField
HONDA, TohruProf., Group Leader
TANIMOTO, YasunoriAssoc. Prof.
SASAKI, HiroyukiAssistant Prof.
NOGAMI, TakashiEngineer
ASAOKA, SeijiSenior Fellow

Beam Diagnostics and Control (Light Source IV)

We are conducting research and development on the high-precision monitor system of electron and photon beam in the storage ring. We are also doing development of a control systems and feedback systems for the effective operation of the storage ring, and maintenance and improvement of related apparatus. We are also doing development and construction of a high-speed feedback system to prevent beam instability. For the future light source (ERL), we are dealing with R&D of an advanced beam diagnosis system which can be detect of high-current, extremely short bunch and super-low emittance beam.

NamePositionField
OBINA, TakashiAssoc. Prof., Group Leader
TAKAI, RyotaAssistant Prof.
TADANO, MikitoSenior Engineer/Engineering Counselor
SAGEHASHI, HidenoriEngineer

Beam Channel and Safety (Light Source V)

We are conducting research and development on the beam channel systems to deliver synchrotron radiation to the beamline without any damage of all components caused heat load of high-power beam. We are doing maintenance and improvement of a radiation safety systems of the storage ring. We are also doing research and development on a safety system for the future light source (ERL).

NamePositionField
MIYAUCHI, HiroshiAssoc. Prof., Group Leader
HAGA, KaiichiAssoc. Prof.
NIGORIKAWA, KazuyukiExpert Engineer
SATO, YoshihiroEngineer
TAHARA, ToshihiroEngineer

Electron Gun (Light Source VI)

We are promoting studies of beam dynamics at the injection linac of ERL. We are also doing research and development on the key components for ERL such as ultra-vacuum chambers, 500kV high-power supplies, high-output drive laser and cathodes with high quantum yield.

NamePositionField
MIYAJIMA, TsukasaAssoc. Prof., Group Leader
HONDA, YosukeAssistant Prof.
YAMAMOTO, MasahiroAssistant Prof.
JIN, XiuguangAssistant Prof.
UCHIYAMA, TakashiEngineer

Insertion Devices (Light Source VII)

We are conducting research and development on advanced insertion devices which can provide synchrotron radiation with high emittance and excellent polarization property throughout a broad wavelength region between vacuum ultraviolet and hard X-rays. We are developing an insertion devices with a new concept, and carrying out a study about insertion devices and free-electron lasers for the future light source (ERL).

NamePositionField
KATO, RyukoProf., Group Leader
TSUCHIYA, KimichikaAssoc. Prof.
ADACHI, MasahiroAssistant Prof.
SHIOYA, TatsuroExpert Engineer

[Link]

KEK Accelerator Laboratory http://www2.kek.jp/accl/eng/

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