Accelerator Test Facility (ATF) of KEK is a research center for studies on issues concerning the injector, damping ring, and beam delivery system for the ILC. The ATF damping ring reduces the vertical emittance of the beam down to 4 pmÅrad. ATF2 is a final-focus test beam line that aims to focus the low emittance beam from the damping ring to a vertical size of about 37 nm and to demonstrate the nanometer level beam stability, using numerous advanced beam diagnostics and feedback tools. These tools have been developed through R&D at the ATF, and applied for the newly constructed ATF2 beam line. Further improvements will be continued in parallel to the commissioning of the nanometer beam focus. A large number of scientists from SLAC, LBNL, FNAL, Oxford University, DESY, CERN, UCL, LLNL, IHEP, PAL, RHUL and Japanese universities participated in research programs at the ATF/ATF2.

UVSOR has been operational for 27 years, providing synchrotron light in the wavelength range from the terahertz waves to soft X-rays. The accelerators have been continuously upgraded, especially in 2000’s. The lattice of the storage ring was modified to achieve smaller emittance and to create new straight sections for undulators. At present, the ring is operated with small emittance, 27 nm-rad. Totally four undulators are in operation and two more can be installed. The injector and the beam transport line were upgraded to be compatible with full energy injection. The radiation shielding was reinforced. In 2010, top-up operation was fully introduced to users operation. A new straight section was created by moving the injection point, which will be used for developments of new light source technologies.

Gunma University Heavy Ion Medical Center, GHMC, started cancer treatments with high energy carbon beams in March 2010. Aiming at promoting the wide spread of the carbon therapy, the grand design of the facility and a variety of R&D studies were conducted by the HIMAC group of National Institute of Radiological Sciences, NIRS, in collaboration with Gunma University. The design concepts of the facility include the high reliability, high efficiency, and low construction and operation cost. The success of the facility will open up a new era of the carbon therapy.

Efforts to produce high gradients in 1.3 GHz superconducting single-cell and 9-cell cavities started around 20 years ago. Many efforts and developments have been made and the TESLA technology became a baseline for cavity fabrication and surface treatment of XFEL and ILC cavities. Continuous effort for high gradient with high yield has been made to reach the ILC specification. However, the ILC goal of 35 MV/m@Q0=8E9 with 90% yield is still a little beyond the present state of the art. In our previous report, the optimization of the electropolishing facility by the chemical analysis, surface analysis and the coupon experiments have been discussed. In this report, research on the physical cleaning method, the optical observation of the cavity inner surface together with quench localization technique, the electromagnetic calculation for defect and a defect removal tool are discussed. Continuous research on gradient performance improvement of the superconducting cavity is in progress at KEK-STF.

KEKB stopped the operation on June 30, 2010, and has started to upgrade to SuperKEKB aiming at 40 times higher luminosity to search for new physics beyond the Standard Model. Since 2001 KEKB has been running at the world highest luminosity and has achieved the record of 2.11×10³⁴ cm^－2s^－1, which is more than twice the design luminosity. This paper describes the history, achievements, and operation experiences of KEKB.

The 32nd International Free Electron Laser Conference FEL 2010 was held in Malmö, Sweden from August 23 to August 27, 2010. Around 300 participants presented splendid research in FEL science during over 60 presentations and close to 250 posters. In this article, we report the overview of the conference, including some personal impressions.