arXiv subjects

E. Takasaki

Publications and source records attributed to E. Takasaki.

3 recordsLinked to original sources

arXiv2000

Development of the 50-Mev DTL for the Jaeri/Kek Joint Project

An Alvaretz-type DTL, to accelerate the H- ion beam from 3 to 50 MeV, is being constructed as the injector for the JAERI/KEK Joint Project. The following components of the DTL have been developed: (1) a cylindrical tank, made by copper electroforming; (2) rf contactors; (3) a pulse-excited quadrupole magnet with a hollow coil made by copper electroforming; (4) a switching-regulator-type pulsed-power supply for the quadrupole magnet. High-power tests of the components have been conducted using a short-model tank. Moreover a breakdown experiment of the copper electrodes has been carried out in order to study the properties of several kinds of copper materials.

physics.acc-ph↗

arXiv2000

Beam Energy Stabilization of the Kek 40mev Proton Linac

The new method to stabilize the beam energy of the KEK 40MeV proton linac, is developed now. In this method, the signal of the velocity monitor installed upstream the debuncher in the 40MeV beam line, is processed and then fed to the phase shifter of the debuncher rf system so as to cancel the fluctuation of the beam energy. In this article, the beam tests to prove the validity of this method and the system are described.

physics.acc-ph↗

arXiv2000

Development of a DTL Quadrupole Magnet with a New Electroformed Hollow Coil for the Jaeri/Kek Joint Project

Quadrupole electromagnets have been developed with a hollow coil produced using an improved periodic reverse electroforming. These will be installed in each of the drift tubes of the DTL (324 MHz) as part of the JAERI/KEK Joint Project at the high-intensity proton accelerator facility. Measurements of the magnets' properties were found to be consistent with computer-calculated estimated. The details of the design, the fabrication process, and the measurement results for the quadrupole magnet are described.

physics.acc-ph↗