Speakers
Description
Proton linear accelerators are crucial in spallation neutron sources, CANS, proton therapy, etc. DTL, especially Alvarez-type, is used for intense pulsed proton beams at several to tens of MeV. High-intensity neutron sources characterized by superior temporal resolution, unprecedented peak brightness demand higher pulse current intensity proton linear accelerator. With the in-depth research on the DTL structure, improved DTL variants such as the IH and CH structures have been applied. And the advances in solid-state power source technology make short-cavity structures with inter-cavity magnetic focusing promising to boost acceleration efficiency and reduce beam losses.
The short-cavity IH-DTL studied in this poster offers advantages such as modular optimization capability and stable electromagnetic performance.The poster focuses on APF IH-DTL with single short-cavity research, accelerating 2.5 MeV protons with an 80 mA pulse current , has been accelerated by RFQ and transported through MEBT, to 4.5 MeV via Beampath, Matlab and CST. The structure is obtained, consisting 15 Tubes and 14 Gaps, with a length of 0.91 m, a radiu of 0.2 m, an outlet phase width of 37.3° at the inlet of the next short-cavity (about 50 cm along the exit drift section) , and 80 mA high-intensity proton beams with a transmission efficiency of 99.2%.
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