ECRIS2018 - List of Authors (Huang, W.)

Paper	Title	Page
TUA5	High Power Operation with SECRAL-II Ion Source	58
	L.T. Sun, X. Fang, J.W. Guo, W. Huang, J.B. Li, L. B. Li, L. X. Li, W. Lu, H.Y. Ma, Z. Shen, Y. Yang, W.H. Zhang, X.Z. Zhang, H.W. Zhao IMP/CAS, Lanzhou, People's Republic of China
	SECRAL-II ion source has been successfully developed with the experiences from SECRAL that is another superconducting ECR ion source in operation at IMP. Other than that, SECRAL-II has been intentionally optimized in structure so as to make it optimum for 28 GHz microwave operation. This ion source was available on the test bench in early 2016, and has been used for 28 GHz high microwave power commissioning and tests. With a maximum power 10 kW@28 GHz and 2 kW@18 GHz, very high microwave power density and dense hot plasma could be built in the 5-liter volume plasma chamber. Consequently very high current density ion beams of high charge states are achievable, which have already exceeded the performance the 24 GHz SECRAL had made couple of years ago. However, there is also the intractable issues stemmed from the hot dense electrons inside the plasma, such as plasma chamber cooling, dynamic heat load to the cryogenic system, and so on. This paper will present the recent results of SECRAL-II operated with high microwave power. The typical consequent issues during the high power course other than high intensity high charge state ion beam production will be discussed.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2018-TUA5
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WEB3	High Temperature Oven Development for Intense Metal Beam Production at IMP
	W. Lu, W. Huang, C. Qian, L.T. Sun, X.Z. Zhang IMP/CAS, Lanzhou, People's Republic of China
	As the main injector of heavy ion accelerator, ECR ion sources need to provide more and more intense highly charged refractory metallic ion beams at Institute of Modern Physics. This requires the performance of high temperature oven to be further improved so that the crucible can operate at ultra-high temperature for a long time without deformation. In order to meet these requirements, an inductive high temperature oven with ~200 kHz of heating frequency has been proposed and fabricated. The very preliminary off-line test results show that this oven can reach up to about 1800°C at 0.5 kW of AC power. In this contribution, we will discuss the structure of this high temperature oven and analyze the testing results as well.
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THA4	Development of LECR4 Ion Source for Intense Beam Production and LECR5 for SESRI Project	188
	C. Qian, X. Fang, Y.C. Feng, J.W. Guo, W. Huang, Z.H. Jia, X.X. Li, W. Lu, L.T. Sun, H. Wang, Y. Yang, X.Z. Zhang, H.W. Zhao IMP/CAS, Lanzhou, People's Republic of China
	Several intense highly charged heavy ion beams have been produced from Lanzhou ECR ion source No.4 (LECR4) since 2014. Recently an attempt to generate intense light ion beam was tested by High-B mode of LECR4 ion source. We firstly produced 8.72 emA of 4He²⁺ beam with 1.7 kW of 18 GHz microwave power at 30 kV extraction voltage. According to the experience of LECR4. A new room temperature ECR ion source (named LECR5) has been designed to deliver multiple charge ion beams for the Space Environment Simulation Research Infrastructure (SESRI) at Harbin Institute of Technology. It aims to produce almost all ion beams from H²⁺ to 209Bi³²⁺. This article reviews the latest result of LECR4 and preliminary design of LECR5 in detail.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2018-THA4
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Paper

Title

Page

High Power Operation with SECRAL-II Ion Source

58

L.T. Sun, X. Fang, J.W. Guo, W. Huang, J.B. Li, L. B. Li, L. X. Li, W. Lu, H.Y. Ma, Z. Shen, Y. Yang, W.H. Zhang, X.Z. Zhang, H.W. Zhao
IMP/CAS, Lanzhou, People's Republic of China

SECRAL-II ion source has been successfully developed with the experiences from SECRAL that is another superconducting ECR ion source in operation at IMP. Other than that, SECRAL-II has been intentionally optimized in structure so as to make it optimum for 28 GHz microwave operation. This ion source was available on the test bench in early 2016, and has been used for 28 GHz high microwave power commissioning and tests. With a maximum power 10 kW@28 GHz and 2 kW@18 GHz, very high microwave power density and dense hot plasma could be built in the 5-liter volume plasma chamber. Consequently very high current density ion beams of high charge states are achievable, which have already exceeded the performance the 24 GHz SECRAL had made couple of years ago. However, there is also the intractable issues stemmed from the hot dense electrons inside the plasma, such as plasma chamber cooling, dynamic heat load to the cryogenic system, and so on. This paper will present the recent results of SECRAL-II operated with high microwave power. The typical consequent issues during the high power course other than high intensity high charge state ion beam production will be discussed.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2018-TUA5

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WEB3

High Temperature Oven Development for Intense Metal Beam Production at IMP

W. Lu, W. Huang, C. Qian, L.T. Sun, X.Z. Zhang
IMP/CAS, Lanzhou, People's Republic of China

As the main injector of heavy ion accelerator, ECR ion sources need to provide more and more intense highly charged refractory metallic ion beams at Institute of Modern Physics. This requires the performance of high temperature oven to be further improved so that the crucible can operate at ultra-high temperature for a long time without deformation. In order to meet these requirements, an inductive high temperature oven with ~200 kHz of heating frequency has been proposed and fabricated. The very preliminary off-line test results show that this oven can reach up to about 1800°C at 0.5 kW of AC power. In this contribution, we will discuss the structure of this high temperature oven and analyze the testing results as well.

Export •

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

THA4

Development of LECR4 Ion Source for Intense Beam Production and LECR5 for SESRI Project

188

C. Qian, X. Fang, Y.C. Feng, J.W. Guo, W. Huang, Z.H. Jia, X.X. Li, W. Lu, L.T. Sun, H. Wang, Y. Yang, X.Z. Zhang, H.W. Zhao
IMP/CAS, Lanzhou, People's Republic of China

Several intense highly charged heavy ion beams have been produced from Lanzhou ECR ion source No.4 (LECR4) since 2014. Recently an attempt to generate intense light ion beam was tested by High-B mode of LECR4 ion source. We firstly produced 8.72 emA of 4He²⁺ beam with 1.7 kW of 18 GHz microwave power at 30 kV extraction voltage. According to the experience of LECR4. A new room temperature ECR ion source (named LECR5) has been designed to deliver multiple charge ion beams for the Space Environment Simulation Research Infrastructure (SESRI) at Harbin Institute of Technology. It aims to produce almost all ion beams from H²⁺ to 209Bi³²⁺. This article reviews the latest result of LECR4 and preliminary design of LECR5 in detail.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2018-THA4

Export •

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