CERN Accelerating science

Article
Title	Research on Drift Tube Linac Model Cavity for CPHS
Author(s)	Zheng, S X (Beijing U. of Tech.) ; Guan, X (Beijing U. of Tech.) ; Wei, J (Beijing U. of Tech.) ; Zhang, H Y (Beijing U. of Tech.) ; Billen, J H (TechSource, Santa Fe) ; Young, L M (TechSource, Santa Fe) ; He, Y (NUCTECH, Beijing) ; Li, J (NUCTECH, Beijing) ; Zhang, D S (NUCTECH, Beijing) ; Li, J H (Beijing, Inst. Atomic Energy) ; Stovall, J (CERN) ; Zhao, Y L (Beijing, Inst. High Energy Phys.)
Publication	2010
In:	25th Linear Accelerator Conference, Tsukuba, Japan, 12 - 17 Sep 2010, pp.TUP071
Subject category	Accelerators and Storage Rings
Abstract	The CPHS pro­ject in Ts­inghua Uni­ver­si­ty plans to con­struct a 13 MeV lin­ear ac­cel­er­a­tor to de­liv­er a pulsed pro­ton beam hav­ing an av­er­age beam cur­rent of 2.5 mA. A Drift Tube Linac (DTL), fol­low­ing a Radio Fre­quen­cy Quadrupole ac­cel­er­a­tor(RFQ), will ac­cel­er­ate pro­tons from 3 to 13MeV. The ac­cel­er­at­ing field and phase will be ramped to match the lon­gi­tu­di­nal restor­ing forces at the end of the RFQ. Like­wise, the trans­verse fo­cus­ing forces, pro­vid­ed by per­ma­nent-mag­net quadrupole lens­es (PMQs) will be pro­grammed to match the trans­verse restor­ing forces at the end of the RFQ to avoid miss­match and avoid para­met­ric res­o­nances. We will pre­sent the main physics de­sign pa­ram­e­ters of CPHS DTL and de­scribe the prop­er­ties of the res­o­nant cav­i­ty. We plan to apply elec­tron beam weld­ing tech­nol­o­gy ex­clu­sive­ly in the fab­ri­ca­tion of the drift tubes and will pre­sent the test re­sults from our en­gi­neer­ing pro­to­typ­ing pro­gram.