Speaker
Description
To further increase the beam intensity of highly charged U ion beam for RIKEN radio-isotope (RI) beam factory project and to produce the intense beam of medium mass heavy ions, such as Ti, V and Cr ions, for super-heavy element ($Z = 119$ and 120) search experiments, we tried to improve the performance of the RIKEN 28 GHz SC-ECRIS in last two years.
In the test experiment, we successfully produced ~ 300 e$\mu$A of V$^{13+}$ at low field ($B_{\rm ext}\sim 1.4 $ T) and low RF power ($\sim$ 1.3 kW of 28 GHz). It is significantly low magnetic field compared to that for so called “high $B$ mode” operation ($B_{\rm ext}\sim2B_{\rm ecr}$ ($\sim2 $T) with 28 GHz). We also produced ~ 150 e$\mu$A of U$^{33+}$ at $B_{\rm ext}\sim$ 1.55 T and RF power of $\sim$1.5 kW.
In this contribution, we presented how to produce these beams in detail.
