Speaker
Description
Proton linear accelerators are crucial in spallation neutron sources, CANS, proton therapy, etc. DTL, especially Alvarez-type, accelerates intense pulsed proton beams from several to tens of MeV. To meet CANS demands for higher time resolution and peak brightness, DTL must handle high-current pulsed beams. Improved DTL variants like IH and CH have been developed. IH-DTL suits lower-energy beams and low cost. Advances in solid-state power source technology make short-cavity structures promising for higher efficiency and lower losses. This study proposes a design comprising short-cavity IH-DTL structures with external triplets, aiming to investigate a high-current proton IH-DTL accelerating structure. The research focuses on APF IH-DTL with single-cavity research, accelerating 2.5 MeV protons to 13.25 MeV with 5 IH-DTL structures and 4 triplets. The structure has a total length of 638 cm, operate at the frequency of 200 MHz, and the transmission efficiency is 99.73%. At the exit, the transverse beam envelopes are 0.47 cm in X and 0.43 cm in Y, with a longitudinal phase width of 39°. The proposed design enables low-losses, stable acceleration with high-current pulsed proton beam.
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