Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8177500 | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment | 2014 | 8 Pages |
Abstract
To study feasibilities of RFQ-based ion implantation and accelerator mass spectroscopy (AMS), a 104 MHz ladder type IH radio-frequency quadrupole (Ladder IH-RFQ) accelerator has been developed. According to beam dynamics design, it is able to accelerate ions with mass-to-charge ratio up to 14 from 2.9 keV/u to 35.7 keV/u. As a specific feature, the output beam energy spread is as low as 0.6% realized by using internal discrete bunching method. A rod-type RFQ structure, i.e. ladder IH-RFQ is adopted, taking advantage of its mechanical stability and symmetric inter-electrode field. Power test shows that specific shunt impedance of the constructed cavity reaches 178 kΩ m. During the beam commissioning, 210 μA 4He+ beam has been obtained, and the transmission efficiency is better than 70% at current of several tens μA. The ladder IH-RFQ is proved to be very suitable for operating frequency above 100 MHz for light ions.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Instrumentation
Authors
Y.C. Nie, Y.R. Lu, S.L. Gao, X.Q. Yan, Z.Y. Guo, J.E. Chen,