ECRIS-2014 - List of Keywords (cyclotron)

Paper	Title	Other Keywords	Page
MOOBMH01	Periodic Beam Burrent Oscillations Driven By Electron Cyclotron Instabilities In ECRIS Plasmas	plasma, electron, ion, ECRIS	5
	O.A. Tarvainen, T. Kalvas, H. A. Koivisto, J.P.O. Komppula, R.J. Kronholm, J.P. Laulainen JYFL, Jyväskylä, Finland I. Izotov, D. Mansfeld, V. Skalyga IAP/RAS, Nizhny Novgorod, Russia V. Toivanen CERN, Geneva, Switzerland
	Experimental observation of cyclotron instabilities in electron cyclotron resonance ion source plasma operated in cw-mode is reported. The instabilities are associated with strong microwave emission and a burst of energetic electrons escaping the plasma, and explain the periodic oscillations of the extracted beam currents. The instabilities are shown to restrict the parameter space available for the optimization of high charge state ion currents.
	Slides MOOBMH01 [2.020 MB]

MOPPH007	Current Developments for Increasing the Beam Intensities of the RIKEN 18-GHz Superconductiong ECR Ion Source	ion, emittance, ECRIS, ion-source	57
	T. Nagatomo, V. Tzoganis RIKEN, Saitama, Japan O. Kamigaito, M. Kase, Y. Kotaka, T. Nakagawa RIKEN Nishina Center, Wako, Japan Y. Kotaka SHI Accelerator Service Ltd., Tokyo, Japan Y. Ohshiro CNS, Saitama, Japan V. Tzoganis The University of Liverpool, Liverpool, United Kingdom
	Providing intense and highly charged heavy ion beams is one of the most essential and fundamental technologies to explore a trackless frontier so-called “Island of Stability” where relatively stable super heavy elements are considered to exist. Towards this goal, the development of an ion source that can provide a highly charged heavy ion beam with high intensity and low emittance is necessary. In order to provide the desired high intensity ion beam, the beam-radius expansion induced by space charge effects cannot be ignored, and it can cause considerable degradation of the beam emittance. To suppress such effects at the output of an ion source is one of the top priorities in the direction of improving both the quality and intensity of the beam. At first, we plan to examine the space charge effects with a high-intensity beam provided by the 18-GHz Superconducting ECR Ion Source at RIKEN Nishina Center. To measure the degradation of the beam emittance as function of the beam’s intensity, an in-situ emittance monitor system based on the pepperpot technique and applicable to a wide range of beam intensities is being developed. A report on the current status will be presented.

MOPPH015	Production and Acceleration of Titanium-50 Ion Beam at the U-400 Cyclotron	ion, experiment, ion-source, ECR	64
	S.L. Bogomolov, A.E. Bondarchenko, I.V. Kalagin, K.I. Kuzmenkov, N. Lebedev, V.Ya. Lebedev, V.N. Loginov, R.E. Vaganov JINR, Dubna, Moscow Region, Russia Z. Asfari, H. Faure, M. Filliger, B.J.P. Gall IPHC, Strasbourg Cedex 2, France
	Funding: *Work supported by Russian Foundation for Basic Research under grant number 13-02-12011 The production of Ti-50 ion beam with ECR ion source using MIVOC method is described. The experiments were performed at the test bench with the natural and enriched compounds of titanium (CH3)5C5Ti(CH3)3. The compounds were synthesized in collaboration with IPHC (Strasbourg) group. In the experiments at the test bench the beam currents of Ti⁵⁺ - 80 mkA and Ti¹¹⁺ - 70 mkA were achieved at different settings of the source. After successful tests two 3 weeks runs with Ti-50 beam were performed at the U-400 cyclotron for the experiments on spectroscopy of super heavy elements. The intensity of the injected beam of 50Ti⁵⁺ was about of 50-60 μA, during experiment the source have shown stable operation. The compound consumption rate was determined to be about of 2.4 mg/h, corresponding to 50Ti consumption of 0.52 mg/h.

MOPPH019	Metallic Beam Development with an ECR Ion Source at Michigan State University (MSU)	ion, ECR, ion-source, plasma	79
	D.E. Neben, D.G. Cole, D. Leitner, G. Machicoane, L. Tobos NSCL, East Lansing, Michigan, USA
	Funding: Supported by Michigan State University, National Science Foundation: NSF Award Number PHY-1102511 Electron Cyclotron Resonance (ECR) ion sources have been used at MSU to provide metal ion beams to the coupled cyclotron facility (CCF), and in the future, for The Facility for Rare Isotope Beams (FRIB). The challenges of metallic beam production with ECR are in production, efficiency, stability and contamination. Future facilities such as FRIB will add the challenge of intensity. We report development of two rare earth metals and the conversion from the oxidized state into metal. The enriched isotopes of 144 Sm, and 176 Yb are commonly available in the sesquioxide form which is unsuitable for use in our standard ovens. We report here results from the off-line chemical reduction of samarium, and ytterbium oxides into metal. We were able to demonstrate efficiencies of up to 90 % throughout the conversion process. The samples were then run on our ECR ion sources to confirm the products of the reduction. In addition we report the development of cadmium metal by passing vapor though over 3/4 m of heated stainless steel tubing and observed 4.3 euA of Cd 20+ with an average consumption of 1 mg/hr.

TUOMMH02	ECR Ion Source Developments at INFN-LNS	ion, plasma, ion-source, proton	87
	L. Celona, G. Castro, S. Gammino, D. Mascali, L. Neri, G. Torrisi INFN/LNS, Catania, Italy G. Ciavola CNAO Foundation, Milan, Italy A. Galatà INFN/LNL, Legnaro (PD), Italy G. Torrisi Universitá Mediterranea di Reggio Calabria, Reggio Calabria, Italy
	At INFN-LNS, ECRIS development during the ‘90s boosted the K-800 Cyclotron performances: SERSE and CAESAR have then well supported Nuclear Physics research. For the new needs of the laboratory, further improvements are required and here described. Activities recently started aimed to the production of multicharged ion beams and to the production of intense light ion beams. Technological developments led the AISHa source design, now under construction, in order to adapt a high performance ECR ion source to hospital facilities needing multiply charged ion production with high reliability and brightness, easy operations and maintenance. The realization of the 75kV-70mA proton source, called PS-ESS, and of its LEBT for the forthcoming European Spallation Source in Sweden is one of the major engagements of the INFN-LNS. Other activities are ongoing on high charge state and high intensity beam production: a major update is going to be finalized on SERSE cryogenic system; at Vancouver, the VIS source is used for producing multi-mA beams of H²⁺ for a high-current cyclotron; a new flexible plasma trap is under test for fundamental research about innovative plasma heating methods.
	Slides TUOMMH02 [11.330 MB]

WEOMMH03	Development of the Magnetic System for New DECRIS-PM Ion Source	ion, permanent-magnet, extraction, injection	111
	A.A. Efremov, V. Bekhterev, S.L. Bogomolov JINR, Dubna, Moscow Region, Russia N.N. Konev ITT-Group, Moscow, Russia
	Super-heavy-element factory is under development at the Flerov Laboratory for Nuclear Reactions, JINR, Dubna. The factory will include DC-280 cyclotron, which will be equipped with two 100 kV high voltage platforms. All-permanent magnet ECRIS will be installed on one of the platforms. The request for the source is a production of medium mass ions with A/q=4-7.5 such as 48Ca⁸⁺. Results of the detailed design of a magnetic structure for DECRIS-PM will be presented.
	Slides WEOMMH03 [1.165 MB]

Paper

Title

Other Keywords

Page

MOOBMH01

Periodic Beam Burrent Oscillations Driven By Electron Cyclotron Instabilities In ECRIS Plasmas

plasma, electron, ion, ECRIS

5

O.A. Tarvainen, T. Kalvas, H. A. Koivisto, J.P.O. Komppula, R.J. Kronholm, J.P. Laulainen
JYFL, Jyväskylä, Finland
I. Izotov, D. Mansfeld, V. Skalyga
IAP/RAS, Nizhny Novgorod, Russia
V. Toivanen
CERN, Geneva, Switzerland

Experimental observation of cyclotron instabilities in electron cyclotron resonance ion source plasma operated in cw-mode is reported. The instabilities are associated with strong microwave emission and a burst of energetic electrons escaping the plasma, and explain the periodic oscillations of the extracted beam currents. The instabilities are shown to restrict the parameter space available for the optimization of high charge state ion currents.

Slides MOOBMH01 [2.020 MB]

MOPPH007

Current Developments for Increasing the Beam Intensities of the RIKEN 18-GHz Superconductiong ECR Ion Source

ion, emittance, ECRIS, ion-source

57

T. Nagatomo, V. Tzoganis
RIKEN, Saitama, Japan
O. Kamigaito, M. Kase, Y. Kotaka, T. Nakagawa
RIKEN Nishina Center, Wako, Japan
Y. Kotaka
SHI Accelerator Service Ltd., Tokyo, Japan
Y. Ohshiro
CNS, Saitama, Japan
V. Tzoganis
The University of Liverpool, Liverpool, United Kingdom

Providing intense and highly charged heavy ion beams is one of the most essential and fundamental technologies to explore a trackless frontier so-called “Island of Stability” where relatively stable super heavy elements are considered to exist. Towards this goal, the development of an ion source that can provide a highly charged heavy ion beam with high intensity and low emittance is necessary. In order to provide the desired high intensity ion beam, the beam-radius expansion induced by space charge effects cannot be ignored, and it can cause considerable degradation of the beam emittance. To suppress such effects at the output of an ion source is one of the top priorities in the direction of improving both the quality and intensity of the beam. At first, we plan to examine the space charge effects with a high-intensity beam provided by the 18-GHz Superconducting ECR Ion Source at RIKEN Nishina Center. To measure the degradation of the beam emittance as function of the beam’s intensity, an in-situ emittance monitor system based on the pepperpot technique and applicable to a wide range of beam intensities is being developed. A report on the current status will be presented.

MOPPH015

Production and Acceleration of Titanium-50 Ion Beam at the U-400 Cyclotron

ion, experiment, ion-source, ECR

64

S.L. Bogomolov, A.E. Bondarchenko, I.V. Kalagin, K.I. Kuzmenkov, N. Lebedev, V.Ya. Lebedev, V.N. Loginov, R.E. Vaganov
JINR, Dubna, Moscow Region, Russia
Z. Asfari, H. Faure, M. Filliger, B.J.P. Gall
IPHC, Strasbourg Cedex 2, France

Funding: *Work supported by Russian Foundation for Basic Research under grant number 13-02-12011
The production of Ti-50 ion beam with ECR ion source using MIVOC method is described. The experiments were performed at the test bench with the natural and enriched compounds of titanium (CH3)5C5Ti(CH3)3. The compounds were synthesized in collaboration with IPHC (Strasbourg) group. In the experiments at the test bench the beam currents of Ti⁵⁺ - 80 mkA and Ti¹¹⁺ - 70 mkA were achieved at different settings of the source. After successful tests two 3 weeks runs with Ti-50 beam were performed at the U-400 cyclotron for the experiments on spectroscopy of super heavy elements. The intensity of the injected beam of 50Ti⁵⁺ was about of 50-60 μA, during experiment the source have shown stable operation. The compound consumption rate was determined to be about of 2.4 mg/h, corresponding to 50Ti consumption of 0.52 mg/h.

MOPPH019

Metallic Beam Development with an ECR Ion Source at Michigan State University (MSU)

ion, ECR, ion-source, plasma

79

D.E. Neben, D.G. Cole, D. Leitner, G. Machicoane, L. Tobos
NSCL, East Lansing, Michigan, USA

Funding: Supported by Michigan State University, National Science Foundation: NSF Award Number PHY-1102511
Electron Cyclotron Resonance (ECR) ion sources have been used at MSU to provide metal ion beams to the coupled cyclotron facility (CCF), and in the future, for The Facility for Rare Isotope Beams (FRIB). The challenges of metallic beam production with ECR are in production, efficiency, stability and contamination. Future facilities such as FRIB will add the challenge of intensity. We report development of two rare earth metals and the conversion from the oxidized state into metal. The enriched isotopes of 144 Sm, and 176 Yb are commonly available in the sesquioxide form which is unsuitable for use in our standard ovens. We report here results from the off-line chemical reduction of samarium, and ytterbium oxides into metal. We were able to demonstrate efficiencies of up to 90 % throughout the conversion process. The samples were then run on our ECR ion sources to confirm the products of the reduction. In addition we report the development of cadmium metal by passing vapor though over 3/4 m of heated stainless steel tubing and observed 4.3 euA of Cd 20+ with an average consumption of 1 mg/hr.

TUOMMH02

ECR Ion Source Developments at INFN-LNS

ion, plasma, ion-source, proton

87

L. Celona, G. Castro, S. Gammino, D. Mascali, L. Neri, G. Torrisi
INFN/LNS, Catania, Italy
G. Ciavola
CNAO Foundation, Milan, Italy
A. Galatà
INFN/LNL, Legnaro (PD), Italy
G. Torrisi
Universitá Mediterranea di Reggio Calabria, Reggio Calabria, Italy

At INFN-LNS, ECRIS development during the ‘90s boosted the K-800 Cyclotron performances: SERSE and CAESAR have then well supported Nuclear Physics research. For the new needs of the laboratory, further improvements are required and here described. Activities recently started aimed to the production of multicharged ion beams and to the production of intense light ion beams. Technological developments led the AISHa source design, now under construction, in order to adapt a high performance ECR ion source to hospital facilities needing multiply charged ion production with high reliability and brightness, easy operations and maintenance. The realization of the 75kV-70mA proton source, called PS-ESS, and of its LEBT for the forthcoming European Spallation Source in Sweden is one of the major engagements of the INFN-LNS. Other activities are ongoing on high charge state and high intensity beam production: a major update is going to be finalized on SERSE cryogenic system; at Vancouver, the VIS source is used for producing multi-mA beams of H²⁺ for a high-current cyclotron; a new flexible plasma trap is under test for fundamental research about innovative plasma heating methods.

Slides TUOMMH02 [11.330 MB]

WEOMMH03

Development of the Magnetic System for New DECRIS-PM Ion Source

ion, permanent-magnet, extraction, injection

111

A.A. Efremov, V. Bekhterev, S.L. Bogomolov
JINR, Dubna, Moscow Region, Russia
N.N. Konev
ITT-Group, Moscow, Russia

Super-heavy-element factory is under development at the Flerov Laboratory for Nuclear Reactions, JINR, Dubna. The factory will include DC-280 cyclotron, which will be equipped with two 100 kV high voltage platforms. All-permanent magnet ECRIS will be installed on one of the platforms. The request for the source is a production of medium mass ions with A/q=4-7.5 such as 48Ca⁸⁺. Results of the detailed design of a magnetic structure for DECRIS-PM will be presented.

Slides WEOMMH03 [1.165 MB]