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Present Status of the Compact ERL at KEK
The recirculation loop of the Compact ERL (cERL) was constructed from July to November in 2013 after commissioning of the injector . Then commissioning of the entire cERL was started in December 2013Expand
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THE FIRST BEAM RECIRCULATION AND BEAM TUNING IN THE COMPACT ERL AT KEK
Superconducting(SC)-linac-based light sources, which can produce ultra-brilliant photon beams in CW operation, are attracting worldwide attention. In KEK, we have been conducting RD the beams wereExpand
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L-band Resonant Ring for Testing RF Windows for ILC
A resonant ring is widely used for the breakdown test of RF components under high power. It can reach power gain of more than 10 dB, which is limited by the attenuation of the ring. An L-bandExpand
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CONSTRUCTION AND COMMISSIONING OF COMPACT-ERL INJECTOR AT KEK
The Compact Energy-Recovery Linac (cERL) is under construction at KEK in order to demonstrate the technologies that are needed for the future 3-GeV ERL project. In April 2013, the 5-MeV injector ofExpand
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Digital Filters Used for Digital Feedback System at cERL
TLDR
We present the latest applications in the LLRF systems of the cERL. Expand
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Evaluation of Digital LLRF Control System Performance at STF in KEK
TLDR
This paper presents an evaluation of the digital LLRF control system with a master–slave configuration and an investigation to confirm the effect of the optical communication link delay on the RF stabilities. Expand
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Application of disturbance observer-based control in low-level radio-frequency system in a compact energy recovery linac at KEK
A disturbance observer (DOB)-based control for a digital low-level radio-frequency (LLRF) system in a compact energy recovery linac (cERL) at KEK has been developed. The motivation for this controlExpand
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Construction and commissioning of the compact energy-recovery linac at KEK
Abstract Energy-recovery linacs (ERLs) are promising for advanced synchrotron light sources, high-power free electron lasers (FELs), high-brightness gamma-ray sources, and electron–ion colliders. ToExpand
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FPGA-based klystron linearization implementations in scope of ILC
Abstract We report the development and implementation of four FPGA-based predistortion-type klystron linearization algorithms. Klystron linearization is essential for the realization of ILC, since itExpand
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Development and test of klystron linearization packages for FPGA-based low level RF control systems of ILC-like electron accelerators
We report the development and implementation of two FPGA-based predistortion-type klystron linearization algorithms at the Fermi National Accelerator Laboratory (FNAL), USA and the DeutschesExpand
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