Design of an alternating phase focusing Interdigital H-mode Drift-Tube-Linac with low injection energy

作者：Zhao, L.^*; Pang, J.; He, X.; Ying, Z.; Shi, J.

来源：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment , 2016, 806: 75-79.

DOI：10.1016/j.nima.2015.10.007

• Interdigital H-mode
• Alternating Phase Focusing
• Low injection energy
• High shunt impedance

An Inter-digital H-mode (IH) Drift Tube Linac (DTL) was designed to accelerate a proton beam in the low energy region with high RF efficiency and high gradient. The IH DTL is 1.078 m long and operates at 200 MHz. Protons could be accelerated from 0.04 MeV to 2.4 MeV (the 13 range is from 0.0092 to 0.0714). The method of alternating phase focusing (APF) was applied for beam focusing. The simulation results show that the transmission is 38% and the longitudinal acceptance is approximately 140. The shunt impedance of the entire cavity is 365 M Omega/m. Adjustments of the electric-field were performed, and the beam dynamics design was described. The beam loss and voltage sensitivity were calculated.

• 出版日期2016-1-11
• 单位中国工程物理研究院; 清华大学; 中国工程物理研究院流体物理研究所