Joint Development of High Output Pulse Power Supply Equipped with SiC Power Device
Contributing to the Simultaneous High Output Operation of Two Hard X-Ray FEL Beam Lines at SACLA

The two X-ray FEL beam lines in operation at the SACLA X-ray free electron laser (XFEL) facility, RIKEN and the Japan Synchrotron Radiation Research Institute have succeeded in the simultaneous operation of high laser output exceeding 40 kilowatts.

To achieve high output operation, it was necessary to operate the kicker electromagnet at approximately six times the normal voltage, thus Nichicon collaborated with RIKEN and the Japan Synchrotron Radiation Research Institute to jointly develop the required high output pulse power supply. Using a next-generation power semiconductor device SiC MOSFET, an efficient and stable power supply was developed. One with low power loss and an accurate 0.001% deviation from set electric current values.

Up to now, sufficient available provision of beam time to users has been an issue. Going forward, we expect increased efficacy through the usage opportunities generated by high output simultaneous operation of multiple beam lines and the creation of unique effects through the cultivation of distinctive XFEL usage methods.

» Click here to visit the RIKEN website

Newly developed Nichicon high output pulse power supply

Newly developed Nichicon high output pulse
power supply

Development of an ultra precise high voltage charger for SACLA (X-FEL)

Nichicon participates in the national project “SACLA (X-FEL :X-ray free electron laser) plan” certified as a key of national importance. X-FEL is a completely new technology, and is attracting attention as a "dream light source" that is believed to be capable of observing the size of matter at the molecular level as well as instantaneous movements.

This new x-ray facility is expected to produce outstanding fundamental scientific research results in fields that include materials chemistry, plasma physics, astrophysics, chemistry, structural biology and biochemistry. These results can also be predicted to also have great impacts in fields ranging widely from nuclear fusion to catalysts.

The stable operation of SACLA requires a high level of precision – i.e., a margin of error of 0.01%. We succeeded in developing a charger that fulfills the required performance.

The SACLA (X-FEL) project uses 72 Nichicon ultra-precise high-voltage chargers and 70 modulators in the modulator power supplies for the klystron.

» SACLA (X-FEL) : The Institute of Physical and Chemical Research

Copyright(C)The Institute of Physical and Chemical

Copyright(C)The Institute of Physical and Chemical Research(RIKEN)

Ultra-precise charger (right photo, in the rack) Modulator (left photo) PFN (pulse forming network) high-voltage charger

Ultra-precise high-voltage charger (right photo, in the rack)
Modulator (left photo)

Developments in the medical field

In particle beam treatment, which is a new treatment method for cancer that is gaining notice, the nuclei of elements are accelerated to irradiate cancerous areas in order to pinpoint and destroy them. This technique also uses our power supplies for ultra-precise accelerators, which apply our technologies for high-voltage high-current control, high-capacity inverters, direct-current stabilization and high-precision digital applications.

Treat cancer without operating
Treat cancer without operating
Power source for clinical accelerators
Power source for clinical accelerators

J-PARC (Tokai mura, Ibaraki/Japan Atomic Energy Agency)

The Japan Proton Accelerator Research Complex (J-PARC), which is a high-intensity proton acceleration facility, is being advanced jointly by the High Energy Accelerator Research Organization (KEK) and the Japan Atomic Energy Agency (JAEA). This pioneering scientific research facility is comprised of a world-class accelerator that generates high-intensity proton beams and an experimental facility that uses those high-intensity proton beams.
Nichicon provides superior products to the main accelerator projects in Japan, numerous research organizations and accelerator manufacturers, and we have received high evaluations for them. We are also undertaking development of various types of high-precision power supplies at J-PARC as well.

Nichicon technologies support the world’s best

Inverter smoothing aluminum electrolytic capacitors

Nichicon technologies are even utilized in SPring-8, which is one of the world's largest synchrotron radiation facilities

The Super Photon Ring 8GeV(Spring-8),one of r\the world's largest radiation facilities.

The large synchrotron radiation facility known as "SPring - 8" situated in Harima Science Garden City is among the world's largest research facilities of its kind, and capable of generating "synchrotron radiation" of the higest quality in the world. At this facility, many types of power supplies developed by Nichicon are implemented, including "high-current stabilized power supplies for electromagnets" and "power supplies for klystron."

Synchrotron radiation is "scientific light" that is useful in cutting-edge research in such wide-ranging fields as bioscience, environmental science, medical treatment, and various industrial fields. For example, it is used in the exposure and analysis of semiconductors. Nichicon puts its high-voltage/ high-current control technologies to full use as an active part of this big project.

» SPring-8 : The Institute of Physical and Chemical Research

Nichicon has developed the largest electron beam accelerators in Japan, yielding an output of 8 million volts, as well as electro-magnetic power supplies for accelerators and many other applications.

Electron beam accelerators Electro-magnetic power supplies

Nichicon has developed several 8-million-volt electron beam accelerators capable of generating pulses in ultra-short bursts lasting only ten-millionths of a second, with power in excess of approximately one trillion watts, equivalent to the total amount of power generated in the entire world. These accelerators are installed at the Nagaoka University of Technology.

Moreover, Nichicon has developed many types of power supplies for accelerators. It has also delivered electro-magnetic power supplies for accelerators for the “B-Factory Project” that aims to solve the mystery of the creation of the universe (the Big Bang). The High Energy Accelerator Research Organization under the Ministry of Education, Culture, Sports, Science and Technology is promoting this project. Nichicon contribute to the generation of artificial neutrinos in the K2K experiments under the leadership of Honorary Professor Masatoshi Koshiba of the University of Tokyo, who was awarded the Nobel Prize in physics in 2002.

» Power modules for electric vehicles (EV)
» Charging facilities for electric vehicles (EV)
» Inverter smoothing capacitors for electric and hybrid vehicles
» Contributions to the Hayabusa asteroid probe


Business Group for Capacitor-Applied Systems & Equipment

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