IPAC2016 - List of Authors (Wang, B.C.)

Paper	Title	Page
TUPMB010	Magnetic Center Position and Tilt Angle of Quadrupole by Vibration Wire Method	1127
	L. Wu, X. Guan, X.W. Wang, S.X. Zheng TUB, Beijing, People's Republic of China B.C. Wang NINT, Xi'an, People's Republic of China G. Xialing CIAE, Beijing, People's Republic of China
	Vibrating wire method and device are described to locate the magnetic center of a Quadrupole theoretically and experimentally. With rotating 180 degrees method, it is convenience to measure the position magnetic center from mechanical center. Tilt angle can also be measured because tilt of magnetic axis will cause the difference of measured magnetic center in different harmonic driving current frequency. Errors analysis shows that tilt of Quadrupole will cause the main error and improved device is described to adjust and measure the tilt angle to fix the errors caused by tilt.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-TUPMB010
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MOPMW014	Design of the 7MeV Linac Injector for the 200MeV Synchrotron of the Xi'an Proton Application Facility	426
	Q.Z. Xing, C. Cheng, C.T. Du, L. Du, T. Du, X. Guan, H. Jiang, C.-X. Tang, R. Tang, D. Wang, X.W. Wang, L. Wu, H.Y. Zhang, Q.Z. 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 B.C. Wang, Z.M. Wang, W.L. Yang, Y. Yang, C. Zhao State Key Laboratory of Intense Pulsed Radiation Simulation and Effect, Northwest Institute of Nuclear Technology, Shannxi, People's Republic of China
	We present, in this paper, the design result of the 7 MeV linac which will inject the negative hydrogen ion beam to the downsteam synchrotron of the Xi‘an Proton Application Facility (XiPAF). This newly designed facility will be located in Xi'an city and provide the proton beam with the maximum energy of 230 MeV for the research of the single event effect. The 7 MeV linac injector is composed of the 50 keV negative hydrogen ion source, Low Energy Beam Transport line (LEBT), 3 MeV four-vane-type Radio Frequency Quadrupole (RFQ) accelerator, 7 MeV Alvarez-type Drift Tube Linac (DTL), and the corresponding RF power source system. The output beam of the linac injector is designed with the peak current of 5 mA, maximum repetition frequency of 0.5 Hz, beam pulse width of 10~40 μs and RMS normalized emittance of 0.24 π mm·mard.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-MOPMW014
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TUPMB009	Vibrating Wire Measurements for the XiPAF Permanent Magnet Quadrupoles	1124
SUPSS102	use link to see paper's listing under its alternate paper code
	B.C. Wang, M.T. Qiu, Z.M. Wang State Key Laboratory of Intense Pulsed Radiation Simulation and Effect, Northwest Institute of Nuclear Technology, Shannxi, People's Republic of China C.T. Du, X.W. Wang, L. Wu, Q.Z. Xing, S.X. Zheng TUB, Beijing, People's Republic of China
	Vibrating wire technique is a promising measure-ment method for small-aperture Permanent Magnet Quadrupoles (PMQs) in linear accelerators and scan-ning nuclear microprobes. In this paper, we describe the improved vibrating wire setup for measuring an individual PMQ with the minimum aperture of several millimeters. This setup is aiming at measuring the magnetic center. The advantage of this setup is that any mechanical measurement on the wire, which may be the main error source, is avoided. Experiments of the 20 mm-aperture Halbach-type PMQs for Xi'an Proton Application Facility (XiPAF) DTL has been carried out. The research results of the magnetic center measurements show a precision of about 10 μm and robustness against the background magnetic field. Results of the magnetic center and field multipoles measurements agree with the ones obtained from the rotating coil.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-TUPMB009
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Paper

Title

Page

Magnetic Center Position and Tilt Angle of Quadrupole by Vibration Wire Method

1127

L. Wu, X. Guan, X.W. Wang, S.X. Zheng
TUB, Beijing, People's Republic of China
B.C. Wang
NINT, Xi'an, People's Republic of China
G. Xialing
CIAE, Beijing, People's Republic of China

Vibrating wire method and device are described to locate the magnetic center of a Quadrupole theoretically and experimentally. With rotating 180 degrees method, it is convenience to measure the position magnetic center from mechanical center. Tilt angle can also be measured because tilt of magnetic axis will cause the difference of measured magnetic center in different harmonic driving current frequency. Errors analysis shows that tilt of Quadrupole will cause the main error and improved device is described to adjust and measure the tilt angle to fix the errors caused by tilt.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-TUPMB010

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MOPMW014

Design of the 7MeV Linac Injector for the 200MeV Synchrotron of the Xi'an Proton Application Facility

426

Q.Z. Xing, C. Cheng, C.T. Du, L. Du, T. Du, X. Guan, H. Jiang, C.-X. Tang, R. Tang, D. Wang, X.W. Wang, L. Wu, H.Y. Zhang, Q.Z. 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
B.C. Wang, Z.M. Wang, W.L. Yang, Y. Yang, C. Zhao
State Key Laboratory of Intense Pulsed Radiation Simulation and Effect, Northwest Institute of Nuclear Technology, Shannxi, People's Republic of China

We present, in this paper, the design result of the 7 MeV linac which will inject the negative hydrogen ion beam to the downsteam synchrotron of the Xi‘an Proton Application Facility (XiPAF). This newly designed facility will be located in Xi'an city and provide the proton beam with the maximum energy of 230 MeV for the research of the single event effect. The 7 MeV linac injector is composed of the 50 keV negative hydrogen ion source, Low Energy Beam Transport line (LEBT), 3 MeV four-vane-type Radio Frequency Quadrupole (RFQ) accelerator, 7 MeV Alvarez-type Drift Tube Linac (DTL), and the corresponding RF power source system. The output beam of the linac injector is designed with the peak current of 5 mA, maximum repetition frequency of 0.5 Hz, beam pulse width of 10~40 μs and RMS normalized emittance of 0.24 π mm·mard.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-MOPMW014

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TUPMB009

Vibrating Wire Measurements for the XiPAF Permanent Magnet Quadrupoles

1124

SUPSS102

use link to see paper's listing under its alternate paper code

B.C. Wang, M.T. Qiu, Z.M. Wang
State Key Laboratory of Intense Pulsed Radiation Simulation and Effect, Northwest Institute of Nuclear Technology, Shannxi, People's Republic of China
C.T. Du, X.W. Wang, L. Wu, Q.Z. Xing, S.X. Zheng
TUB, Beijing, People's Republic of China

Vibrating wire technique is a promising measure-ment method for small-aperture Permanent Magnet Quadrupoles (PMQs) in linear accelerators and scan-ning nuclear microprobes. In this paper, we describe the improved vibrating wire setup for measuring an individual PMQ with the minimum aperture of several millimeters. This setup is aiming at measuring the magnetic center. The advantage of this setup is that any mechanical measurement on the wire, which may be the main error source, is avoided. Experiments of the 20 mm-aperture Halbach-type PMQs for Xi'an Proton Application Facility (XiPAF) DTL has been carried out. The research results of the magnetic center measurements show a precision of about 10 μm and robustness against the background magnetic field. Results of the magnetic center and field multipoles measurements agree with the ones obtained from the rotating coil.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-TUPMB009

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reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)