| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1827283 | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment | 2009 | 4 Pages |
In order to obtain high-intensity ion beams from a linear accelerator (linac) in a stable manner, it is necessary to suppress the defocusing force due to the space charge effect. The defocusing force is extremely strong in low-energy and high-intensity beams. Therefore, high-intensity ion beam acceleration in the low-energy region is one of the most difficult conditions to achieve. One solution is to suppress the defocusing force by dividing the high-intensity beam into several beams. Thus, a multibeam Interdigital-H (IH)-type Radio Frequency Quadrupole (IH-RFQ) linac has been proposed for a heavy ion inertial fusion (HIF) injector system.In particular, we have been developing a two-beam-type IH-RFQ cavity as a prototype of the multibeam-type IH-RFQ. This prototype has the capability of accelerating charged particles to a mass ratio (q/A ) greater than 16 from 5 up to 60 keV/u. In the design, the expected total output current is about 87 mA for the total input beam current of 120 mA.
