HIAT2015 - List of Authors (Ichikawa, S.)

Paper	Title	Page
WEPB02	Electron-Beam-Driven RI Separator for SCRIT at RIKEN RI Beam Factory	194
	T. Ohnishi, S. Ichikawa, M. Wakasugi RIKEN Nishina Center, Wako, Japan
	The electron-beam-driven RI separator for SCRIT (ERIS)* was constructed for the SCRIT (Self-Confinement RI Target) electron scattering facility** at RIKEN RI Beam Factory, and it is employed to produce low-energy, high-quality, and high-intensity RI beams used for the electron scattering of unstable nuclei. In ERIS, the photofission of uranium driven by an electron beam is used for RI production, and the estimated production rate of fission products is 2.210¹¹ fissions/s with 30-g uranium and a 1-kW electron beam. The RI production in ERIS has been operated since 2013. Uranium carbide is used as the production target, and it is obtained by the carbothermal reduction of uranium oxide in presence of carbon. The obtained disk was approximately 1 mm in a thickness and 18 mm in a diameter. The average mass concentration of uranium in the disk was estimated as 3.4 g/cm³. Recently, we improved the efficiency of release from the production target and that of transport from the target. As a result, the rate of 132Sn was 2.610⁵ atoms/s with 15-g uranium and a 10-W electron beam. In this paper, we report improvements and the present status of ERIS. * T. Ohnishi et. al: Nucl. Instr. Meth. B317, 357(2013). ** M. Wakasugi et. al: Nucl. Instr. Meth. B317, 668(2013).
Export •	reference for this paper to ※ BibTeX, ※ LaTeX, ※ Text, ※ RIS/RefMan, ※ EndNote (xml)

Paper

Title

Page

Electron-Beam-Driven RI Separator for SCRIT at RIKEN RI Beam Factory

194

T. Ohnishi, S. Ichikawa, M. Wakasugi
RIKEN Nishina Center, Wako, Japan

The electron-beam-driven RI separator for SCRIT (ERIS)* was constructed for the SCRIT (Self-Confinement RI Target) electron scattering facility** at RIKEN RI Beam Factory, and it is employed to produce low-energy, high-quality, and high-intensity RI beams used for the electron scattering of unstable nuclei. In ERIS, the photofission of uranium driven by an electron beam is used for RI production, and the estimated production rate of fission products is 2.2*10¹¹ fissions/s with 30-g uranium and a 1-kW electron beam. The RI production in ERIS has been operated since 2013. Uranium carbide is used as the production target, and it is obtained by the carbothermal reduction of uranium oxide in presence of carbon. The obtained disk was approximately 1 mm in a thickness and 18 mm in a diameter. The average mass concentration of uranium in the disk was estimated as 3.4 g/cm³. Recently, we improved the efficiency of release from the production target and that of transport from the target. As a result, the rate of 132Sn was 2.6*10⁵ atoms/s with 15-g uranium and a 10-W electron beam. In this paper, we report improvements and the present status of ERIS.
* T. Ohnishi et. al: Nucl. Instr. Meth. B317, 357(2013).
** M. Wakasugi et. al: Nucl. Instr. Meth. B317, 668(2013).

Export •

reference for this paper to ※ BibTeX, ※ LaTeX, ※ Text, ※ RIS/RefMan, ※ EndNote (xml)