Paper |
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THPO022 |
Development Progress of the H+/H− Linear Accelerators at Tsinghua University |
732 |
THOP06 |
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- 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
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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).
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Slides THPO022 [4.421 MB]
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-LINAC2018-THPO022
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About • |
paper received ※ 12 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 |
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- Y. Lei, X. Guan, R. Tang, X.W. Wang, Q.Z. Xing, S.X. Zheng
TUB, Beijing, People’s Republic of China
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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.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-LINAC2018-THPO034
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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 |
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- 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
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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.
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Poster THPO035 [1.268 MB]
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-LINAC2018-THPO035
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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 |
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- 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
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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.
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Poster THPO036 [2.645 MB]
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-LINAC2018-THPO036
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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 |
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- 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
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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.
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Poster THPO064 [1.413 MB]
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-LINAC2018-THPO064
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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 |
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- 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
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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.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-LINAC2018-THPO111
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About • |
paper received ※ 12 September 2018 paper accepted ※ 20 September 2018 issue date ※ 18 January 2019 |
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