IPAC2013 - List of Authors (Zheng, S.X.)

Paper	Title	Page
THPME012	Measuring the Direction of Permanent Magnet Easy Axis by Helmholtz Coil	3534
	X.Y. Jia, S.X. Zheng TUB, Beijing, People's Republic of China
	Permanent magnets for quadrupole focusing was used in drift-tube linac of the Compact Pulsed Hadron Sources(CPHS) in Tsinghua university. In order to ensure the accuracy of the quadrupole field can meet the design requirement, we need measure the strength and direction of remanence and choose the suit magnet. This paper proposed an easy way to get the direction of permanent magnet easy axis by Helmholtz coil without knowing the angle between magnet and the axis of the coil: the magnet rotational angle data was measured by rotary encoder and encoder would send trigger signal every turn at the same direction. First we started to record data when trigger signal was appeared. Then measured the magnet in three perpendicular directions (x,y,z). Last, caculated the remanence in three directions. We had measured some magnet by the new method and obtained satisfactory results.

THPWO050	High Power Test and Beam Commissioning of he CPHS RFQ Accelerator	3884
	Q.Z. Xing, C. Cheng, L. Du, Q. Du, T. Du, C. Jiang, H.T. Lu, J. Ni, Q. Qiang, C.-X. Tang, X.W. Wang, Y.G. Yang, H.Y. Zhang, S.X. Zheng TUB, Beijing, People's Republic of China J.H. Billen Self Employment, Private address, USA W.Q. Guan, Y. He, J. Li NUCTECH, Beijing, People's Republic of China X. Guan Tsinghua University, Beijing, People's Republic of China J. Stovall STFC/RAL, Chilton, Didcot, Oxon, United Kingdom L.M. Young LMY Technology, USA
	Funding: Work supported by the “985 Project” of the Ministry of Education of China, National Natural Science Foundation of China (Major Research Plan Grant No. 91126003 and 11175096). We present, in this paper, the high power test result and the beam commissioning status of a Radio Frequency Quadrupole (RFQ) accelerator for the Compact Pulsed Hadron Source (CPHS) at Tsinghua University. The 3-meter-long RFQ is designed to deliver 3 MeV protons to the downstream High Energy Beam Transport (HEBT) with the peak current of 50 mA, pulse length of 0.5 ms and beam duty factor of 2.5%. The RFQ has been designed, manufactured, and installed at Tsinghua University. High-vacuum test of the RFQ has been carried out carefully and the cooling system has been mounted. At the beginning of 2013, the high power RF test has been performed and the first 3 MeV proton beam is obtained.

THPWO051	Status of CPHS Project	3887
	S.X. Zheng, H.B. Chen, C. Cheng, Q. Du, T. Du, X. Guan, X.Y. Jia, C. Jiang, H.T. Lu, C.-X. Tang, D. Wang, D. Wang, X.W. Wang, H.Y. Zhang, Z. Zhang TUB, Beijing, People's Republic of China W.Q. Guan, Y. He, J. Li, D.-S. zhang NUCTECH, Beijing, People's Republic of China
	CPHS (Compact Pulsed Hadron Source) project was initiated in Tsinghua University at 2009. It consists of a 13 MeV proton Linac (RFQ+DTL), a neutron target station and some neutron stations. The construction of 3 MeV Linac (RFQ only) and target station will be finished at the end of 2012. And initial commissioning will be started at the early of year 2013. The progress and results of early commissioning will be presented at this paper. Then we will report the next plan also.

Paper

Title

Page

Measuring the Direction of Permanent Magnet Easy Axis by Helmholtz Coil

3534

X.Y. Jia, S.X. Zheng
TUB, Beijing, People's Republic of China

Permanent magnets for quadrupole focusing was used in drift-tube linac of the Compact Pulsed Hadron Sources(CPHS) in Tsinghua university. In order to ensure the accuracy of the quadrupole field can meet the design requirement, we need measure the strength and direction of remanence and choose the suit magnet. This paper proposed an easy way to get the direction of permanent magnet easy axis by Helmholtz coil without knowing the angle between magnet and the axis of the coil: the magnet rotational angle data was measured by rotary encoder and encoder would send trigger signal every turn at the same direction. First we started to record data when trigger signal was appeared. Then measured the magnet in three perpendicular directions (x,y,z). Last, caculated the remanence in three directions. We had measured some magnet by the new method and obtained satisfactory results.

THPWO050

High Power Test and Beam Commissioning of he CPHS RFQ Accelerator

3884

Q.Z. Xing, C. Cheng, L. Du, Q. Du, T. Du, C. Jiang, H.T. Lu, J. Ni, Q. Qiang, C.-X. Tang, X.W. Wang, Y.G. Yang, H.Y. Zhang, S.X. Zheng
TUB, Beijing, People's Republic of China
J.H. Billen
Self Employment, Private address, USA
W.Q. Guan, Y. He, J. Li
NUCTECH, Beijing, People's Republic of China
X. Guan
Tsinghua University, Beijing, People's Republic of China
J. Stovall
STFC/RAL, Chilton, Didcot, Oxon, United Kingdom
L.M. Young
LMY Technology, USA

Funding: Work supported by the “985 Project” of the Ministry of Education of China, National Natural Science Foundation of China (Major Research Plan Grant No. 91126003 and 11175096).
We present, in this paper, the high power test result and the beam commissioning status of a Radio Frequency Quadrupole (RFQ) accelerator for the Compact Pulsed Hadron Source (CPHS) at Tsinghua University. The 3-meter-long RFQ is designed to deliver 3 MeV protons to the downstream High Energy Beam Transport (HEBT) with the peak current of 50 mA, pulse length of 0.5 ms and beam duty factor of 2.5%. The RFQ has been designed, manufactured, and installed at Tsinghua University. High-vacuum test of the RFQ has been carried out carefully and the cooling system has been mounted. At the beginning of 2013, the high power RF test has been performed and the first 3 MeV proton beam is obtained.

THPWO051

Status of CPHS Project

3887

S.X. Zheng, H.B. Chen, C. Cheng, Q. Du, T. Du, X. Guan, X.Y. Jia, C. Jiang, H.T. Lu, C.-X. Tang, D. Wang, D. Wang, X.W. Wang, H.Y. Zhang, Z. Zhang
TUB, Beijing, People's Republic of China
W.Q. Guan, Y. He, J. Li, D.-S. zhang
NUCTECH, Beijing, People's Republic of China

CPHS (Compact Pulsed Hadron Source) project was initiated in Tsinghua University at 2009. It consists of a 13 MeV proton Linac (RFQ+DTL), a neutron target station and some neutron stations. The construction of 3 MeV Linac (RFQ only) and target station will be finished at the end of 2012. And initial commissioning will be started at the early of year 2013. The progress and results of early commissioning will be presented at this paper. Then we will report the next plan also.