ECRIS2012 - List of Keywords (brightness)

Paper	Title	Other Keywords	Page
WEPP08	Emittance Measurements for U Ion Beams Produced from RIKEN 28 GHz SC-ECRIS	ion, emittance, ECRIS, heavy-ion	130
	K. Ozeki, Y. Higurashi, T. Nakagawa, J. Ohnishi RIKEN Nishina Center, Wako, Japan
	In order to investigate the ion optical parameters of the beam line of RIKEN 28 GHz SC-ECR ion source into the new heavy ion linac (RILAC II), we measured the emittance of the heavy ion beams form RIKEN 28 GHz SC-ECR ion source. In the test experiments, we observed that the emittance of the U³⁵⁺ beam was ~100 π·mm·mrad (4 rms emittance), which is smaller than the acceptance of the accelerator (~160 π·mm·mrad). The emittance with 28 GHz was almost same as that with 18 GHz and independent on the injected RF power (1~2 kW). The size of emittance increased with decreasing the charge state. We also measured the emittance of U and oxygen ions under the same condition. In this experiment we observed that the emittance of oxygen ions was always larger than the U ion beam for same M/q. In this contribution, we report the experimental results for emittance measurement of highly charged U, Xe and O ions from RIKEN 28 GHz SC-ECR ion source in detail.

Paper

Title

Other Keywords

Page

WEPP08

Emittance Measurements for U Ion Beams Produced from RIKEN 28 GHz SC-ECRIS

ion, emittance, ECRIS, heavy-ion

130

K. Ozeki, Y. Higurashi, T. Nakagawa, J. Ohnishi
RIKEN Nishina Center, Wako, Japan

In order to investigate the ion optical parameters of the beam line of RIKEN 28 GHz SC-ECR ion source into the new heavy ion linac (RILAC II), we measured the emittance of the heavy ion beams form RIKEN 28 GHz SC-ECR ion source. In the test experiments, we observed that the emittance of the U³⁵⁺ beam was ~100 π·mm·mrad (4 rms emittance), which is smaller than the acceptance of the accelerator (~160 π·mm·mrad). The emittance with 28 GHz was almost same as that with 18 GHz and independent on the injected RF power (1~2 kW). The size of emittance increased with decreasing the charge state. We also measured the emittance of U and oxygen ions under the same condition. In this experiment we observed that the emittance of oxygen ions was always larger than the U ion beam for same M/q. In this contribution, we report the experimental results for emittance measurement of highly charged U, Xe and O ions from RIKEN 28 GHz SC-ECR ion source in detail.