Author: Wang, X.W.
Paper Title Page
THPO022 Development Progress of the H+/H Linear Accelerators at Tsinghua University 732
THOP06   use link to see paper's listing under its alternate paper code  
 
  • Q.Z. Xing, C.B. Bi, C. Cheng, C.T. Du, T.B. Du, X. Guan, Q.K. Guo, Y. Lei, P.F. Ma, S. Shuai, R. Tang, X.W. Wang, X.D. Xudong, H.Y. Zhang, S.X. Zheng
    TUB, Beijing, People’s Republic of China
  • W.Q. Guan, Y. He, J. Li
    NUCTECH, Beijing, People’s Republic of China
  • W.L. Liu, B.C. Wang, Z.M. Wang, Y. Yang, C. Zhao
    NINT, Shannxi, People’s Republic of China
 
  We pre­sent, in this paper, the de­vel­op­ment progress of the 13MeV pro­ton linac for the Com­pact Pulsed Hadron Source (CPHS), and the 7MeV H linac in­jec­tor for the syn­chro­tron of the Xi’an 200MeV Pro­ton Ap­pli­ca­tion Fa­cil­ity (XiPAF).  
slides icon Slides THPO022 [4.421 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2018-THPO022  
About • paper received ※ 12 September 2018       paper accepted ※ 20 September 2018       issue date ※ 18 January 2019  
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THPO033 The Development of Permanent Magnet Quadrupoles for Xipaf DTL 753
 
  • B.C. Wang, M.T. Qiu, Z.M. Wang, C.Y. Wei
    NINT, Shannxi, People’s Republic of China
  • C.T. Du, Q.K. Guo, X.W. Wang, Q.Z. Xing, S.X. Zheng
    TUB, Beijing, People’s Republic of China
 
  Per­ma­nent mag­net quadrupoles (PMQs) are de­vel­oped for the DTL of Xi’an 200 MeV Pro­ton Ap­pli­ca­tion Fa­cil­ity (XiPAF). In this paper, we de­scribe the fab­ri­ca­tion and mea­sure­ments for the Hal­bach-type PMQs. The main pro­ce­dure of the PMQ man­u­fac­ture is pre­sented. And the mag­netic mea­sure­ments of PMQs are car­ried out with the help of vi­brat­ing wire, Hall probe and ro­tat­ing coil re­spec­tively. The re­sults show the PMQs are able to meet the re­quire­ments of XiPAF DTL.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2018-THPO033  
About • paper received ※ 10 September 2018       paper accepted ※ 20 September 2018       issue date ※ 18 January 2019  
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THPO034 Experimental Study of Tuning Method on a Model Alvarez DTL Cavity for CPHS Project 756
 
  • Y. Lei, X. Guan, R. Tang, X.W. Wang, Q.Z. Xing, S.X. Zheng
    TUB, Beijing, People’s Republic of China
 
  This ar­ti­cle is de­voted to the ex­per­i­men­tal study of tun-ing method for an Al­varez-type drift tube linac (DTL) of the Com­pact Pulse Hadron Source (CPHS) pro­ject at Ts­inghua Uni­ver­sity. The biperi­odic struc­ture based on the post cou­plers are in­tro­duced to over­come the in­sta­bil­ity of the Al­varez DTL tank which is used to op­er­ate in 0 (or 2π) mode. The ex­per­i­men­tal method and re­sults are pre-sented, and the tun­ing scheme for the for­mal CPHS DTL is sum­ma­rized from the tun­ing ex­per­i­ment.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2018-THPO034  
About • paper received ※ 12 September 2018       paper accepted ※ 20 September 2018       issue date ※ 18 January 2019  
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THPO035 Tuning and Low Power Test of the 325 MHz IH-DTL at Tsinghua University 759
 
  • R. Tang, C.T. Du, X. Guan, Y. Lei, P.F. Ma, K.D. Man, C.-X. Tang, X.W. Wang, Q.Z. Xing, W.B. Ye, H.Y. Zhang, S.X. Zheng
    TUB, Beijing, People’s Republic of China
  • J. Li
    NUCTECH, Beijing, People’s Republic of China
 
  An in­ter­dig­i­tal H-mode drift tube linac (IH-DTL), which ac­cel­er­ates pro­ton beam from 3 MeV to 7 MeV has been de­signed and as­sem­bled at Ts­inghua Uni­ver­sity. There are 8 plungers in the 1 m tank and one co-ax­ial cou­pler is used to feed the power. The fre­quency is tuned to 325 MHz. The field dis­tri­b­u­tion is mea­sured by the bead per­tur­ba­tion method. Fi­nally, the gap volt­age error has been tuned to be smaller than ±3.0%, which sat­is­fies the de­sign re­quire­ment. The Q fac­tor of the tank is 7000 while the power dis­si­pa­tion is 244 kW. De­tails of the low power test is pre­sented.  
poster icon Poster THPO035 [1.268 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2018-THPO035  
About • paper received ※ 12 September 2018       paper accepted ※ 20 September 2018       issue date ※ 18 January 2019  
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THPO036 Error Study of CPHS DTL after Assembly 763
SPWR014   use link to see paper's listing under its alternate paper code  
 
  • P.F. Ma, C.T. Du, X. Guan, Q.K. Guo, Y. Lei, R. Tang, X.W. Wang, Q.Z. Xing, S.X. Zheng
    TUB, Beijing, People’s Republic of China
  • B.C. Wang
    NINT, Shannxi, People’s Republic of China
 
  The Com­pact Pulsed Hadron Source (CPHS) at Ts­inghua Uni­ver­sity is one multi-pur­pose pulsed neu­tron source. The in­jec­tor of the CPHS is a linac, which mainly con­sists of a source, a low-en­ergy beam trans­port line (LEBT), a radio fre­quency quadru­pole (RFQ) and a drift tube linac (DTL). The error study of the DTL for CPHS is pre­sented in this paper. The error study can pro­vide the field tol­er­ances in the DTL cav­ity and the align­ment tol­er­ance be­tween the RFQ and DTL.  
poster icon Poster THPO036 [2.645 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2018-THPO036  
About • paper received ※ 06 September 2018       paper accepted ※ 20 September 2018       issue date ※ 18 January 2019  
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THPO064 Tuning of a Four-vane RFQ for Xi’an 200 MeV Proton Application Facility 838
 
  • X.D. Yu, X. Guan, Q.K. Guo, Y. Lei, P.F. Ma, X.W. Wang, Q.Z. Xing, S.X. Zheng
    TUB, Beijing, People’s Republic of China
  • B.C. Wang, Z.M. Wang, C. Zhao
    NINT, Shannxi, People’s Republic of China
 
  This paper mainly de­scribes the pro­ce­dures and re­sults of tun­ing a four-vane Radio Fre­quency Quadru­pole (RFQ) ac­cel­er­a­tor for the Xi’an 200 MeV Pro­ton Ap­pli­ca­tion Fa­cil­ity (XiPAF) pro­ject. The 3-me­ter-long RFQ will ac­cel­er­ate a 50 keV H beam from the ECR source to 3 MeV, and de­liver it to the down­stream drift tube linac (DTL) with a peak cur­rent of 5 mA, pulse length of 10-40 μs and max­i­mum rep­e­ti­tion rate of 0.5. The ma­chin­ing, as­sem­bly, and RF tun­ing of the RFQ cav­ity has been com­pleted suc­cess­fully. After tun­ing, the rel­a­tive error of the op­er­at­ing quadru­pole mode field is within ±2.7%, and the di­pole mode com-po­nent is within ±1.9% of the quadru­pole mode. The RFQ now is ready for high-power RF con­di­tion­ing.  
poster icon Poster THPO064 [1.413 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2018-THPO064  
About • paper received ※ 12 September 2018       paper accepted ※ 20 September 2018       issue date ※ 18 January 2019  
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THPO111 The Test of RF Breakdowns of CPHS RFQ 931
 
  • W.B. Ye, C. Cheng, X. Guan, J. Shi, X.W. Wang, Q.Z. Xing, S.X. Zheng
    TUB, Beijing, People’s Republic of China
  • M.C. Wang
    NINT, Shannxi, People’s Republic of China
 
  The high ac­cel­er­at­ing gra­di­ent is sig­nif­i­cant for a com­pact lin­ear ac­cel­er­a­tor, and RF break­downs is a lim­i­ta­tion for the high gra­di­ent. This work aims to re­search RF break­downs of a 325MHz pro­ton Radio Fre­quency Quadru­pole (RFQ) ac­cel­er­a­tor of the Com­pact Pulsed Hadron Source(CPHS). The break­down rate (BDR) of the RFQ has been mea­sured. Break­down wave­forms have been recorded, which have been used for count­ing break­down time dis­tri­b­u­tion and an­a­lyz­ing the lo­ca­tion of RF break­downs.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2018-THPO111  
About • paper received ※ 12 September 2018       paper accepted ※ 20 September 2018       issue date ※ 18 January 2019  
Export • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)