Beam dynamic design of a high intensity injector for proton linac

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• 作者：Wei-Ping Dou^a ; ^{douweiping@impcas.ac.cn" class="auth_mail" title="E-mail the corresponding author} ; Zhi-Jun Wang^a ; Fang-Jian Jia^b ; Yuan He^a ; ^{hey@impcas.ac.cn" class="auth_mail" title="E-mail the corresponding author} ; Zhi Wang^b ; Yuan-Rong Lu^b
• 关键词：High intensity ; KONUS ; DTL ; RFQ ; Compact linac injector
• 刊名：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
• 出版年：2016
• 出版时间：11 August 2016
• 年：2016
• 卷：827
• 期：Complete
• 页码：145-151
• 全文大小：2000 K

文摘

A compact room-temperature injector is designed to accelerate 100 mA proton beam from 45 keV to 4.06 MeV for the proposed high intensity proton linac at State Key Lab of Nuclear Physics and Technology in Peking university. The main feature is that the Radio Frequency Quadruple (RFQ) and the Drift Tube linac (DTL) sections are merged in one piece at the total length of 276 cm. The beam is matched in transverse directions with an compact internal doublet instead of an external matching section in between. The design has reached a high average accelerating gradient up to 1.55 MV/m with transmission efficiency of 95.9% at the consideration of high duty factor operation. The operation frequency is chose to be 200 MHz due to the already available RF power source. The injector combines a 150 cm long 4-vanes RFQ internal section from 45 keV to 618 keV with a 126 cm long H-type DTL section to 4.06 MeV. In general the design satisfy the challenges of the project requirements. And the details are presented in this paper.