ECRIS2020 - Table of Session: MOWZO (Monday before first break)

Paper	Title	Page
MOWZO01	FECR Ion Source Development and Challenges	1
	L.T. Sun, Y. Chen, M.Z. Guan, J.W. Guo, J.B. Li, L.B. Li, L.X. Li, W. Lu, E.M. Mei, X.J. Ou, Z. Shen, X.D. Wang, B.M. Wu, W. Wu, C.J. Xin, X.Z. Zhang, H.W. Zhao, S.J. Zheng, L. Zhu IMP/CAS, Lanzhou, People’s Republic of China Z. Shen, L.T. Sun UCAS, Beijing, People’s Republic of China
	FECR or the First 4th generation ECR ion source is under development at Institute of Modern Physics (IMP) since 2015. This ion source is aiming to extract intense highly charged heavy ion beams in the order of emA from the dense plasma heated with 45 GHz microwave power. To provide effective magnetic confinement to the 45 GHz ECR plasma, a state of the art Nb₃Sn magnet with min-B configuration is a straightforward technical path. As there is no much precedent references, it has to be designed, prototyped at IMP through in-house development. Meanwhile, other physics and technical challenges to a 4th generation ECR ion source are also tackled at IMP to find feasible solutions. This paper will give a brief review of the critical issues in the development of FECR ion source. A detailed report on the status of FECR prototype magnet development will be presented.
	Slides MOWZO01 [16.578 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2020-MOWZO01
About •	Received ※ 27 September 2020 — Revised ※ 02 October 2020 — Accepted ※ 30 November 2020 — Issue date ※ 07 August 2021
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

MOWZO02	LECR5 Development and Status Report	6
	C. Qian, J.R. An, J.J. Chang, X. Fang, Y.C. Feng, J.W. Guo, Z.H. Jia, L.B. Li, W. Lu, J.D. Ma, Y.M. Ma, L.T. Sun, H. Wang, X.Z. Zhang, H.W. Zhao IMP/CAS, Lanzhou, People’s Republic of China C. Qian University of Chinese Academy of Sciences, Beijing, People’s Republic of China
	LECR5 (Lanzhou Electron Cyclotron Resonance ion source No. 5) is an 18 GHz room temperature ECR ion source featuring Ø80 mm ID (Internal Diameter) plasma chamber and high magnetic fields. It has been successfully constructed at IMP recently and has been fully commissioned to meet the requirements of SESRI (Space Environment Simulation and Research Infrastructure) project. According to the test results, LECR5 can meet the requirements of SESRI with sufficient beam intensities within the required the transverse emittances. As LECR5 is designed to be optimal for the operation at 18 GHz, we have managed to explore the source performance at 18 GHz with a maximum microwave power around 2 kW. Recent source test indicates, LECR5 can produce not only high intensity ion beams such as 2.12 emA O⁶⁺, 121 e’A of Ar¹⁴⁺, 73 e’A of Kr²³⁺, 145 e’A of Xe²⁷⁺, but also very high charge state ion beams such as 22 e’A of Bi⁴¹⁺. This paper will present the recent progress with LECR5, especially the intense ion beam production and the beam quality investigation.
	Slides MOWZO02 [5.886 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2020-MOWZO02
About •	Received ※ 27 September 2020 — Revised ※ 30 December 2020 — Accepted ※ 18 May 2021 — Issue date ※ 14 November 2021
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

MOWZO03	Status of the AISHa Ion Source at INFN-LNS	10
	L. Celona, G. Calabrese, G. Castro, F. Chines, S. Gammino, O. Leonardi, G. Manno, D. Mascali, A. Massara, S. Passarello, D. Siliato, G. Torrisi INFN/LNS, Catania, Italy G. Costanzo INFN-Pavia, Pavia, Italy C. Maugeri, F. Russo CNAO Foundation, Pavia, Italy
	The AISHa ion source is an Electron Cyclotron Resonance Ion Source designed to generate high brightness multiply charged ion beams with high reliability, easy operations and maintenance for hadrontheraphy applications. The R&D performed by the INFN-LNS team during the 2019/2020 has allowed the improvement of the AISHa performances up to 20% for some of the extracted beams: both injection and extraction flanges has been improved and a movable electrode has been installed. The low energy beam transport has been equipped of an Emittance Measurement Unit (EMU), working through the beam wire scanners principle, for the measurement of the vertical and horizontal emittance of the beams of interest for hadrontherapy applications. Beam emittance has been characterized as a function of q/m and of the beam intensity to highlight space charge effects. If necessary, the beam wire scanners can be used for the characterization of the beam shape. The perspectives for further developments and plasma diagnostics will be also highlighted.
	Slides MOWZO03 [24.738 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2020-MOWZO03
About •	Received ※ 27 September 2020 — Revised ※ 12 November 2020 — Accepted ※ 06 February 2022 — Issue date ※ 05 July 2022
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

MOWZO04	GISMO Gasdynamic ECR Ion Source Status: Towards High-Intensity Ion Beams of Superior Quality	13
	I. Izotov, A. Bokhanov, E.M. Kiseleva, R.L. Lapin, V. Skalyga, S.S. Vybin IAP/RAS, Nizhny Novgorod, Russia
	Funding: The work was supported by RFBR, grant #20-32-70002, and within the state assignment of the Ministry of Science and Higher Education of the Russian Federation No. 0035-2019-0002. GISMO, a CW high-current quasi-gasdynamic ECR ion source, is under development at the IAP RAS. The quasi-gasdynamic confinement regime, featuring high plasma density (up to 10¹⁴ cm^-3) and moderate electron temperature (~100 eV), allowed to extract pulsed beams of H⁺ and D⁺ ions with current of 450 mA and RMS emittance <0.07 pi mm mrad. It has been already demonstrated that major benefits of quasi-gasdynamic confinement, previously tested in pulsed mode, are scalable to the CW operational mode. In first experiments at GISMO facility, the ion beams were extracted in pulsed mode from the CW plasma of ECR discharge due to technical limitations of cooling circuits. Proton beams with current up to 70 mA were achieved at extraction voltage of 40 kV. A new unique extraction system especially effective for the formation of high current density ion beams was developed. V. Skalyga, I. Izotov, S. Razin, A. Sidorov, S. Golubev, T. Kalvas, H. Koivisto, and O. Tarvainen. Review of Scientific Instruments 85, 02A702 (2014); https://doi.org/10.1063/1.4825074
	Slides MOWZO04 [3.681 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2020-MOWZO04
About •	Received ※ 27 September 2020 — Accepted ※ 18 May 2021 — Issue date ※ 02 September 2021
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

FECR Ion Source Development and Challenges

1

L.T. Sun, Y. Chen, M.Z. Guan, J.W. Guo, J.B. Li, L.B. Li, L.X. Li, W. Lu, E.M. Mei, X.J. Ou, Z. Shen, X.D. Wang, B.M. Wu, W. Wu, C.J. Xin, X.Z. Zhang, H.W. Zhao, S.J. Zheng, L. Zhu
IMP/CAS, Lanzhou, People’s Republic of China
Z. Shen, L.T. Sun
UCAS, Beijing, People’s Republic of China

FECR or the First 4th generation ECR ion source is under development at Institute of Modern Physics (IMP) since 2015. This ion source is aiming to extract intense highly charged heavy ion beams in the order of emA from the dense plasma heated with 45 GHz microwave power. To provide effective magnetic confinement to the 45 GHz ECR plasma, a state of the art Nb₃Sn magnet with min-B configuration is a straightforward technical path. As there is no much precedent references, it has to be designed, prototyped at IMP through in-house development. Meanwhile, other physics and technical challenges to a 4th generation ECR ion source are also tackled at IMP to find feasible solutions. This paper will give a brief review of the critical issues in the development of FECR ion source. A detailed report on the status of FECR prototype magnet development will be presented.

Slides MOWZO01 [16.578 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2020-MOWZO01

About •

Received ※ 27 September 2020 — Revised ※ 02 October 2020 — Accepted ※ 30 November 2020 — Issue date ※ 07 August 2021

Cite •

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

MOWZO02

LECR5 Development and Status Report

6

C. Qian, J.R. An, J.J. Chang, X. Fang, Y.C. Feng, J.W. Guo, Z.H. Jia, L.B. Li, W. Lu, J.D. Ma, Y.M. Ma, L.T. Sun, H. Wang, X.Z. Zhang, H.W. Zhao
IMP/CAS, Lanzhou, People’s Republic of China
C. Qian
University of Chinese Academy of Sciences, Beijing, People’s Republic of China

LECR5 (Lanzhou Electron Cyclotron Resonance ion source No. 5) is an 18 GHz room temperature ECR ion source featuring Ø80 mm ID (Internal Diameter) plasma chamber and high magnetic fields. It has been successfully constructed at IMP recently and has been fully commissioned to meet the requirements of SESRI (Space Environment Simulation and Research Infrastructure) project. According to the test results, LECR5 can meet the requirements of SESRI with sufficient beam intensities within the required the transverse emittances. As LECR5 is designed to be optimal for the operation at 18 GHz, we have managed to explore the source performance at 18 GHz with a maximum microwave power around 2 kW. Recent source test indicates, LECR5 can produce not only high intensity ion beams such as 2.12 emA O⁶⁺, 121 e’A of Ar¹⁴⁺, 73 e’A of Kr²³⁺, 145 e’A of Xe²⁷⁺, but also very high charge state ion beams such as 22 e’A of Bi⁴¹⁺. This paper will present the recent progress with LECR5, especially the intense ion beam production and the beam quality investigation.

Slides MOWZO02 [5.886 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2020-MOWZO02

About •

Received ※ 27 September 2020 — Revised ※ 30 December 2020 — Accepted ※ 18 May 2021 — Issue date ※ 14 November 2021

Cite •

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

MOWZO03

Status of the AISHa Ion Source at INFN-LNS

10

L. Celona, G. Calabrese, G. Castro, F. Chines, S. Gammino, O. Leonardi, G. Manno, D. Mascali, A. Massara, S. Passarello, D. Siliato, G. Torrisi
INFN/LNS, Catania, Italy
G. Costanzo
INFN-Pavia, Pavia, Italy
C. Maugeri, F. Russo
CNAO Foundation, Pavia, Italy

The AISHa ion source is an Electron Cyclotron Resonance Ion Source designed to generate high brightness multiply charged ion beams with high reliability, easy operations and maintenance for hadrontheraphy applications. The R&D performed by the INFN-LNS team during the 2019/2020 has allowed the improvement of the AISHa performances up to 20% for some of the extracted beams: both injection and extraction flanges has been improved and a movable electrode has been installed. The low energy beam transport has been equipped of an Emittance Measurement Unit (EMU), working through the beam wire scanners principle, for the measurement of the vertical and horizontal emittance of the beams of interest for hadrontherapy applications. Beam emittance has been characterized as a function of q/m and of the beam intensity to highlight space charge effects. If necessary, the beam wire scanners can be used for the characterization of the beam shape. The perspectives for further developments and plasma diagnostics will be also highlighted.

Slides MOWZO03 [24.738 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2020-MOWZO03

About •

Received ※ 27 September 2020 — Revised ※ 12 November 2020 — Accepted ※ 06 February 2022 — Issue date ※ 05 July 2022

Cite •

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

MOWZO04

GISMO Gasdynamic ECR Ion Source Status: Towards High-Intensity Ion Beams of Superior Quality

13

I. Izotov, A. Bokhanov, E.M. Kiseleva, R.L. Lapin, V. Skalyga, S.S. Vybin
IAP/RAS, Nizhny Novgorod, Russia

Funding: The work was supported by RFBR, grant #20-32-70002, and within the state assignment of the Ministry of Science and Higher Education of the Russian Federation No. 0035-2019-0002.
GISMO, a CW high-current quasi-gasdynamic ECR ion source, is under development at the IAP RAS. The quasi-gasdynamic confinement regime, featuring high plasma density (up to 10¹⁴ cm^-3) and moderate electron temperature (~100 eV), allowed to extract pulsed beams of H⁺ and D⁺ ions with current of 450 mA and RMS emittance <0.07 pi mm mrad*. It has been already demonstrated that major benefits of quasi-gasdynamic confinement, previously tested in pulsed mode, are scalable to the CW operational mode. In first experiments at GISMO facility, the ion beams were extracted in pulsed mode from the CW plasma of ECR discharge due to technical limitations of cooling circuits. Proton beams with current up to 70 mA were achieved at extraction voltage of 40 kV. A new unique extraction system especially effective for the formation of high current density ion beams was developed.
* V. Skalyga, I. Izotov, S. Razin, A. Sidorov, S. Golubev, T. Kalvas, H. Koivisto, and O. Tarvainen. Review of Scientific Instruments 85, 02A702 (2014); https://doi.org/10.1063/1.4825074

Slides MOWZO04 [3.681 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2020-MOWZO04

About •

Received ※ 27 September 2020 — Accepted ※ 18 May 2021 — Issue date ※ 02 September 2021

Cite •

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