Production of highly charged metallic ion beams with a room temperature ECR ion source-LECR5 for the CAFE2 facility at IMP

• Published in: Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2024-05, Vol.1062, p.169207, Article 169207
• Main Authors: Lu, W., Ma, H.Y., Qian, C., Ma, J.D., Zhang, W.H., Feng, Y.C., Zhang, Z.H., Jia, Z.H., Li, L.B., Fang, X., Zhang, P., Zhang, H., Chang, J.J., Zhang, X.Z., Sun, L.T., He, Y., Zhao, H.W.
• Format: Article
• Language: English
• Subjects: ECR ion source; Highly charged metallic ions; Inductive heating oven
• ISSN: 0168-9002; 1872-9576
• DOI: 10.1016/j.nima.2024.169207

A new facility called CAFE2 (Chinese Accelerator Facility for super heavy Elements) has been constructed and put into routine operation at Institute of Modern Physics (IMP) in 2021. To meet the requirement of metallic ions, we assembled a room-temperature ECR ion source-LECR5 (Lanzhou Electron Cyclotron Resonance ion source No.5) as its injector. This paper mainly introduces the results of optimization of metallic ions, including 40Ca, 48Ca, 54Cr and 55Mn, with inductive heating metal oven. Calcium ions was produced by direct heating of the mixture powder of calcium oxide and aluminum. Chromium and manganese ions were obtained by heating of isotopic pure elemental materials. With different supporting gas, 1–5 puA of metallic ions have been produced and delivered to the accelerator successfully. Beam emittance and transmission efficiency will also be discussed in this paper.