IPAC2013 - List of Keywords (neutral-beams)

Paper	Title	Other Keywords	Page
MOPFI047	Analysis and Design of Matching Unit for a RF Driven Plasma Source for Fusion Purpose	plasma, impedance, ion, ion-source	389
	H.K. Yue Huazhong University of Science and Technology(HUST), Wuhan, People's Republic of China D.Z. Chen, M. Fan, J. Huang, D. Li, X.F. Li, K.F. Liu, C.R. Wan, C. Zhou HUST, Wuhan, People's Republic of China
	A RF driven plasma exciter for producing negative ions, aiming for heating and current drive neutral beam injectors for fusion applications, is in developing in Huazhong University of Science and Technology (HUST). In order to couple the maximum RF power to the source, the matching unit is designed to match the impedance of the source to that of the RF coaxial line. Firstly, a FEM model was built to estimate the equivalent circuit parameters of the source. Numerical predictions were compared with a small experimental setup to verify the accuracy of the fem model. Based on the numerical results, the RF coil and the matching components were carefully designed. Finally, the matching circuit for the source is developed and tested. Experimental results will be presented in the full paper.

MOPME035	Design of a Non-Intercepting Beam Diagnostic Device Using Neutral Beam Fluorescence Method	emittance, ion, diagnostics, target	547
	J. Zhao, J. Chen, J.E. Chen, Z.Y. Guo, S.X. Peng, H.T. Ren, Y. Xu, A.L. Zhang, T. Zhang PKU, Beijing, People's Republic of China H.W. Zhao IMP, Lanzhou, People's Republic of China
	The forward neutral beam from deflecting magntic field carries some characteristic properties of high intensity particle beams, such as profile, emittance etc. Therefore a reliable measurement of neutral beam fluorescence can be used to develop a fast and non-interceptive beam diagnostic tool. A non-intercepting beam emittance (profile) monitor using neutral beam fluorescence method has being constructed at Peking University. As a performance test, an emttiance of an extracted proton beam from a permanent magnetic electron cyclotron resonance (ECR) ion source was successfully measured. The details of design and results of measurement will be presented in this paper.

TUPWO024	The Study of a Calculation Method for Measurement of Diagnostic Neutral Beam Property	plasma, ion, extraction, target	1934
	L.Z. Liang, C.D. Hu, J.L. Wei ASIPP, Hefei, People's Republic of China
	Funding: Supported by National Natural Science Foundation of China under Grant No. 11075183. Considering the beam divergence and the convergence of the spherical electrode, the beam transmission model is presented, and the variation of beam edge is described by a formula, which is used to calculate the beam divergence half-angle with the experimental data obtained by the thermocouples. Assuming the beam divergence half-angle is constant in space and time, the beam profile distribution formula and variation of beam axial intensity are introduced. Taking the HT-7 Diagnostic Neutral Beam (DNB) as a reference, the divergence half-angle is calculated for the neutral beam shot 60901. The 1/e half-width of beam at collimation target calculated by formula is in agreement with that of experimental data. Variation of beam edge and axial intensity with downstream distance is estimated for HT-7 diagnostic neutral beam.

Paper

Title

Other Keywords

Page

MOPFI047

Analysis and Design of Matching Unit for a RF Driven Plasma Source for Fusion Purpose

plasma, impedance, ion, ion-source

389

H.K. Yue
Huazhong University of Science and Technology(HUST), Wuhan, People's Republic of China
D.Z. Chen, M. Fan, J. Huang, D. Li, X.F. Li, K.F. Liu, C.R. Wan, C. Zhou
HUST, Wuhan, People's Republic of China

A RF driven plasma exciter for producing negative ions, aiming for heating and current drive neutral beam injectors for fusion applications, is in developing in Huazhong University of Science and Technology (HUST). In order to couple the maximum RF power to the source, the matching unit is designed to match the impedance of the source to that of the RF coaxial line. Firstly, a FEM model was built to estimate the equivalent circuit parameters of the source. Numerical predictions were compared with a small experimental setup to verify the accuracy of the fem model. Based on the numerical results, the RF coil and the matching components were carefully designed. Finally, the matching circuit for the source is developed and tested. Experimental results will be presented in the full paper.

MOPME035

Design of a Non-Intercepting Beam Diagnostic Device Using Neutral Beam Fluorescence Method

emittance, ion, diagnostics, target

547

J. Zhao, J. Chen, J.E. Chen, Z.Y. Guo, S.X. Peng, H.T. Ren, Y. Xu, A.L. Zhang, T. Zhang
PKU, Beijing, People's Republic of China
H.W. Zhao
IMP, Lanzhou, People's Republic of China

The forward neutral beam from deflecting magntic field carries some characteristic properties of high intensity particle beams, such as profile, emittance etc. Therefore a reliable measurement of neutral beam fluorescence can be used to develop a fast and non-interceptive beam diagnostic tool. A non-intercepting beam emittance (profile) monitor using neutral beam fluorescence method has being constructed at Peking University. As a performance test, an emttiance of an extracted proton beam from a permanent magnetic electron cyclotron resonance (ECR) ion source was successfully measured. The details of design and results of measurement will be presented in this paper.

TUPWO024

The Study of a Calculation Method for Measurement of Diagnostic Neutral Beam Property

plasma, ion, extraction, target

1934

L.Z. Liang, C.D. Hu, J.L. Wei
ASIPP, Hefei, People's Republic of China

Funding: Supported by National Natural Science Foundation of China under Grant No. 11075183.
Considering the beam divergence and the convergence of the spherical electrode, the beam transmission model is presented, and the variation of beam edge is described by a formula, which is used to calculate the beam divergence half-angle with the experimental data obtained by the thermocouples. Assuming the beam divergence half-angle is constant in space and time, the beam profile distribution formula and variation of beam axial intensity are introduced. Taking the HT-7 Diagnostic Neutral Beam (DNB) as a reference, the divergence half-angle is calculated for the neutral beam shot 60901. The 1/e half-width of beam at collimation target calculated by formula is in agreement with that of experimental data. Variation of beam edge and axial intensity with downstream distance is estimated for HT-7 diagnostic neutral beam.