Single-cavity multi-beam drift tube ion acceleration device

Abstract

The invention relates to the technical field of ion acceleration equipment and particularly relates to a single-cavity multi-beam drift tube ion acceleration device. The device is characterized by comprising a cavity, end plates are arranged at the two ends of the cavity, two T-shaped plates are arranged in the cavity vertically symmetrically, a plurality of cylindrical drift tubes are arranged along the central line in the cavity sequentially, two beam channels are formed in each drift tube, the drift tubes are fixed on the T-shaped plates through drift tube supporting rods, an acceleration gap is formed between every two adjacent drift tubes, the adjacent drift tubes are arranged on the vertically symmetric T-shaped plates alternately, and cutting tuning units are arranged at the two ends of the T-shaped plates. High-current acceleration is achieved by accelerating two beams in the single cavity, and accordingly, mass losses of ions in the low energy section due to the space charge effect are prevented. Lots of space and costs are saved for accelerating low-energy high-current ions. The device has the advantages of being high in high-current acceleration capacity, transmission efficiency and acceleration gradient and good in acceleration power efficiency and can be used as a cancer treatment device and a semiconductor injector.

Description

technical field [0001] The invention relates to the technical field of ion acceleration equipment, in particular to a single-cavity multi-beam drift tube ion acceleration device. Background technique [0002] Since its birth in 1932, the Drift Tube Linear Accelerator (DTL) has become the most mainstream room temperature accelerator structure. The acceleration principle is that when the injected charged particles pass through the designed drift tube gap, the drift tube gap is just a positive electric field, so the charged particles can be accelerated in the field direction; after half a high-frequency cycle, the drift tube gap The electric field becomes negative When the electric field is applied, the particles just enter the inside of the drift tube. Because of the electromagnetic shielding effect, the charged particles will not feel the negative electric field and be decelerated; similarly, when entering the next gap of the drift tube after the second half of the high-frequ...

AI Technical Summary

Problems solved by technology

When it works, it can simultaneously accelerate two beams from the front injector under the same conditions, so that the total beam intensity of its output can be doubled, but at the same time, the space charge effect of each single beam can be minimized. It is well controlled, thereby solving the problem that existing technologies cannot accelerate very high-intensity beams

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