Efficient, Radiation-Hardened, 400 and 800-keV Neutral Beam Injection Systems

Demonstration of 500 keV beam acceleration on JT-60 negative-ion-based neutral beam injector

Hydrogen negative ion beams of 486 keV, 2.8A and 507 keV, 1A have been successfully produced in the JT-60U negative ion source with multi aperture, multi grid accelerator of three stages. This is the first accomplishment of the H beam acceleration up to 500 keV at high-current of > 1 A. These successful productions of the high-energy beams at high current have been achieved by overcoming a poor...

Optimal pacing for running 400- and 800-m track races

RAD750 Radiation Hardened PowerPC Microprocessor

The development of a high performance radiation hardened PowerPC microprocessor is nearing completion. The features of the RAD750 are described, as well as the process of radiation hardening the processor. The RAD750 product family includes a PCI support chip and a CompactPCI 3U board, both of which are described.

Development of radial neutral beam injection system on LHD

A radial Neutral Beam Injector (NBI) is newly installed on the Large Helical Device (LHD). The aims of the NBI are its usage as a diagnostic NB for charge exchange recombination spectroscopic measurement and using the NB as a heating source for ions in plasmas. A new positive-ion source was developed for this NBI at NIFS. The structure of the cusp field of the source was determined by the numer...

Synchrotron radiation complex ISI-800