[en] National Institute of Radiological Sciences (NIRS) is promoting multiple-ion therapy to form ideal LET and dose distribution by irradiating several kinds of ion to the target. Possible ions are Helium, Carbon, Oxygen, and Neon. However, in the case of compact accelerator for heavy ion radiotherapy facility, it is desirable to cope with one Electron Cyclotron Resonance (ECR) ion source with all permanent magnets-from the viewpoint of cost, operation and maintenance. We have conducted experimental supply and ion production tests with 18 GHz ECR Ion Source (NIRS-HEC) since 2018. The problem noticed in the supply and tests is that He and Ne take time to switch to other ions. We guessed the case of problem is remaining gas in line. Therefore, we test ions switching with new gas line. As result, we achieved ion switching within 1 minute. In sufficient confinement magnetic field for highly charged ion production of Ne is not obtained at ECR Ion Source with all permanent magnets. Because the mirror magnetic-filed is optimized for C⁴⁺. We decided to do a beam test with NIRS-HEC to develop a new ion source with all permanent magnets. The assumed ions were He²⁺, C⁴⁺, O⁶⁺, Ne⁷⁺, which can be used by linear accelerators used in the population type treatment factory. We performed four ions production tests using NIRS-HEC, and data were acquired to investigate whether the magnetic field distribution could be reproduced by permanent magnets. (author)