ECRIS2010 - Table of Session: MOCOBK (New Development & Status)

Paper

Title

Page

ECR Ion Sources for the Facility for Rare Isotope Beams (FRIB) Project at Michigan State University

14

G. Machicoane, M. Doleans, O.K. Kester, T. Ropponen, L.T. Sun, X. Wu
NSCL, East Lansing, Michigan, USA
D. Leitner
LBNL, Berkeley, California, USA
E. Pozdeyev, E. Tanke
FRIB, East Lansing, Michigan, USA

Funding: Work supported by US DOE Cooperative Agreement DE-SC0000661
Once operational, the Facility for Rare Isotope Beams (FRIB) will open the possibility to gain key understanding in nuclear science and in particular regarding the properties of nuclei far from the valley of stability or the nuclear processes in the universe. In addition it will also allow experimenters to test fundamental symmetries. The production of rare isotopes with FRIB will be achieved, using a heavy ion driver linac that will accelerate a stable isotope beam to 200 MeV/u and deliver it on a fragmentation target. FRIB aims to reach a primary beam power of 400 kW for light to heavy elements up to Uranium. To meet the intensity requirement two high performance ECR ion sources operating at 28 GHz will be used to produce high intensity of medium to high charge state ion beams. Plans regarding initial beam production with the ECR ion sources and beam transport through the front end will be discussed.

Slides MOCOBK01 [3.259 MB]

MOCOBK02

Present Status of FLNR (JINR) ECR Ion Sources

17

S.L. Bogomolov, V.B. Bekhterev, V.M. Drobin, A. Efremov, B. Gikal, G.G. Gulbekyan, Yu.K. Kostyukhov, N. Lebedev, V.N. Loginov, V.V. Seleznev, Yu. Yazvitsky
JINR, Dubna, Moscow Region, Russia

Six ECR ion sources have been operated in the Flerov Laboratory of Nuclear Reactions (JINR). Two 14 GHz ECR ion sources (ECR4M and DECRIS-2) supply various ion species for the U400 and U400M cyclotrons correspondingly for experiments on the synthesis of heavy and exotic nuclei using ion beams of stable and radioactive isotopes. The 18 GHz DECRIS-SC ion source with superconducting magnet system produce ions from Ar up to W for solid state physics experiments and polymer membrane fabrication at the CI-100 cyclotron. The third 14 GHz ion source DECRIS-4 with “flat” minimum of the axial magnetic field is used as a stand alone machine for test experiments and also for experiments on ion modification of materials. The other two compact ECR ion sources with all permanent magnet configuration have been developed for the production of single charged ions and are used at the DRIBs installation and at the MASHA mass-spectrometer. In this paper, present status of the ion sources, recent developments and plans for modernization are reported. Also the results of the preliminary test of the DECRIS-SC2 ECR source will be presented.

Slides MOCOBK02 [11.671 MB]

MOCOBK03

Status of Ion Sources at HIMAC

20

A. Kitagawa, M. Muramatsu, Y. Sakamoto
NIRS, Chiba-shi, Japan
S. Biri
ATOMKI, Debrecen, Hungary
A.G. Drentje
KVI, Groningen, The Netherlands
T.F. Fujita
National Institute of Radiological Sciences, Chiba, Japan
T. Sakuma, N. Sasaki, T. Sasano, W. Takasugi
AEC, Chiba, Japan

Since 1994, heavy-ion radiotherapy using carbon ions is successfully carried out with the Heavy Ion Medical Accelerator in Chiba (HIMAC) at the National Institute of Radiological Sciences (NIRS). Over 5000 cancer patients have already been treated with 140-400 MeV/u carbon beams. These clinical results have clearly verified the advantages of carbon ion. The ion source needs to realize a stable beam with the same conditions for daily operation. Maintenance is restricted to once per year. However, the deposition of carbon on the wall of the plasma chamber is normally unavoidable. This causes an ‘anti-wall-coating effect’, i.e. a decreasing of the beam (typically 50 % after a few months of operation), especially for the higher charge-state ions due to the surface material of the wall. The ion source has - even in this bad condition – still to produce a sufficiently intense and stable beam. We summarize our experience during 16 years of operation and show the scope for further developments. HIMAC is dedicated to radiotherapy, but it has as a second essential task to operate as a facility for physicist users. In that scope it accelerates many ion species for basic experiments. In order to serve all HIMAC users at best, the extension of the range of ion species is an important subject in ion source development. For example, in order to increase the ECRIS-beam intensity for heavier ions, microwave is applied at different frequencies by a traveling wave tube amplifier and….?

Slides MOCOBK03 [2.780 MB]

MOCOBK04

Recent Activities at the ORNL Multicharged Ion Research Facility (MIRF)

23

F.W. Meyer, M.E. Bannister, S. Deng, I.N. Draganić, J.W. Hale, P.R. Harris, C.C. Havener, H.F. Krause, C.R. Vane
ORNL, Oak Ridge, Tennessee, USA

Funding: Sponsored by the Office of Fusion Energy Sciences and the Office of Basic Energy Sciences of the U.S. DOE under contract No. DE-AC05-00OR22725 with UT_Battelle.
We report on recent upgrades of the ORNL Multicharged Ion Research Facility, and our activities in the area of ECR ion source diagnostic measurements. The upgrades include installation of a new all permanent magnet ECR ion source [1] on a high voltage platform that increases our high energy beam production capability to 250keV/q, and installation of a floating beamline fed by a 10 GHz CAPRICE ECR ion source for producing decelerated ion beams to energies as low as a few eV/q range. The primary application of all the produced ion beams is to study fundamental collisional interactions [2] of multicharged ions with electrons, atoms, and surfaces. We also summarize recent diagnostic measurements of the ECR plasma potential and other plasma parameters using an in-situ Langmuir probe installed in the ECR edge plasma and complementary measurements [3] using an external beam deceleration method.
[1] D. Hitz et al. , “An All-Permanent Magnet ECR Ion Source for the ORNL MIRF Upgrade Project,” AIP Conference Proceedings 749, 123 (2005), Woodbury, NY.
[2] F.W. Meyer, “ECR-Based Atomic Collision Physics Research at ORNL MIRF,” in Trapping Highly Charged Ions: Fundamentals and Applications, J. Gillaspy, ed., Nova Science Pub., New York, 2000, pp. 117-164.
[3] P.R. Harris and F.W. Meyer, Rev. Sci. Inst. 81, 02A310 (2010).

Slides MOCOBK04 [2.645 MB]

Paper	Title	Page
MOCOBK01	ECR Ion Sources for the Facility for Rare Isotope Beams (FRIB) Project at Michigan State University	14
	G. Machicoane, M. Doleans, O.K. Kester, T. Ropponen, L.T. Sun, X. Wu NSCL, East Lansing, Michigan, USA D. Leitner LBNL, Berkeley, California, USA E. Pozdeyev, E. Tanke FRIB, East Lansing, Michigan, USA
	Funding: Work supported by US DOE Cooperative Agreement DE-SC0000661 Once operational, the Facility for Rare Isotope Beams (FRIB) will open the possibility to gain key understanding in nuclear science and in particular regarding the properties of nuclei far from the valley of stability or the nuclear processes in the universe. In addition it will also allow experimenters to test fundamental symmetries. The production of rare isotopes with FRIB will be achieved, using a heavy ion driver linac that will accelerate a stable isotope beam to 200 MeV/u and deliver it on a fragmentation target. FRIB aims to reach a primary beam power of 400 kW for light to heavy elements up to Uranium. To meet the intensity requirement two high performance ECR ion sources operating at 28 GHz will be used to produce high intensity of medium to high charge state ion beams. Plans regarding initial beam production with the ECR ion sources and beam transport through the front end will be discussed.
	Slides MOCOBK01 [3.259 MB]

MOCOBK02	Present Status of FLNR (JINR) ECR Ion Sources	17
	S.L. Bogomolov, V.B. Bekhterev, V.M. Drobin, A. Efremov, B. Gikal, G.G. Gulbekyan, Yu.K. Kostyukhov, N. Lebedev, V.N. Loginov, V.V. Seleznev, Yu. Yazvitsky JINR, Dubna, Moscow Region, Russia
	Six ECR ion sources have been operated in the Flerov Laboratory of Nuclear Reactions (JINR). Two 14 GHz ECR ion sources (ECR4M and DECRIS-2) supply various ion species for the U400 and U400M cyclotrons correspondingly for experiments on the synthesis of heavy and exotic nuclei using ion beams of stable and radioactive isotopes. The 18 GHz DECRIS-SC ion source with superconducting magnet system produce ions from Ar up to W for solid state physics experiments and polymer membrane fabrication at the CI-100 cyclotron. The third 14 GHz ion source DECRIS-4 with “flat” minimum of the axial magnetic field is used as a stand alone machine for test experiments and also for experiments on ion modification of materials. The other two compact ECR ion sources with all permanent magnet configuration have been developed for the production of single charged ions and are used at the DRIBs installation and at the MASHA mass-spectrometer. In this paper, present status of the ion sources, recent developments and plans for modernization are reported. Also the results of the preliminary test of the DECRIS-SC2 ECR source will be presented.
	Slides MOCOBK02 [11.671 MB]

MOCOBK03	Status of Ion Sources at HIMAC	20
	A. Kitagawa, M. Muramatsu, Y. Sakamoto NIRS, Chiba-shi, Japan S. Biri ATOMKI, Debrecen, Hungary A.G. Drentje KVI, Groningen, The Netherlands T.F. Fujita National Institute of Radiological Sciences, Chiba, Japan T. Sakuma, N. Sasaki, T. Sasano, W. Takasugi AEC, Chiba, Japan
	Since 1994, heavy-ion radiotherapy using carbon ions is successfully carried out with the Heavy Ion Medical Accelerator in Chiba (HIMAC) at the National Institute of Radiological Sciences (NIRS). Over 5000 cancer patients have already been treated with 140-400 MeV/u carbon beams. These clinical results have clearly verified the advantages of carbon ion. The ion source needs to realize a stable beam with the same conditions for daily operation. Maintenance is restricted to once per year. However, the deposition of carbon on the wall of the plasma chamber is normally unavoidable. This causes an ‘anti-wall-coating effect’, i.e. a decreasing of the beam (typically 50 % after a few months of operation), especially for the higher charge-state ions due to the surface material of the wall. The ion source has - even in this bad condition – still to produce a sufficiently intense and stable beam. We summarize our experience during 16 years of operation and show the scope for further developments. HIMAC is dedicated to radiotherapy, but it has as a second essential task to operate as a facility for physicist users. In that scope it accelerates many ion species for basic experiments. In order to serve all HIMAC users at best, the extension of the range of ion species is an important subject in ion source development. For example, in order to increase the ECRIS-beam intensity for heavier ions, microwave is applied at different frequencies by a traveling wave tube amplifier and….?
	Slides MOCOBK03 [2.780 MB]

MOCOBK04	Recent Activities at the ORNL Multicharged Ion Research Facility (MIRF)	23
	F.W. Meyer, M.E. Bannister, S. Deng, I.N. Draganić, J.W. Hale, P.R. Harris, C.C. Havener, H.F. Krause, C.R. Vane ORNL, Oak Ridge, Tennessee, USA
	Funding: Sponsored by the Office of Fusion Energy Sciences and the Office of Basic Energy Sciences of the U.S. DOE under contract No. DE-AC05-00OR22725 with UT_Battelle. We report on recent upgrades of the ORNL Multicharged Ion Research Facility, and our activities in the area of ECR ion source diagnostic measurements. The upgrades include installation of a new all permanent magnet ECR ion source [1] on a high voltage platform that increases our high energy beam production capability to 250keV/q, and installation of a floating beamline fed by a 10 GHz CAPRICE ECR ion source for producing decelerated ion beams to energies as low as a few eV/q range. The primary application of all the produced ion beams is to study fundamental collisional interactions [2] of multicharged ions with electrons, atoms, and surfaces. We also summarize recent diagnostic measurements of the ECR plasma potential and other plasma parameters using an in-situ Langmuir probe installed in the ECR edge plasma and complementary measurements [3] using an external beam deceleration method. [1] D. Hitz et al. , “An All-Permanent Magnet ECR Ion Source for the ORNL MIRF Upgrade Project,” AIP Conference Proceedings 749, 123 (2005), Woodbury, NY. [2] F.W. Meyer, “ECR-Based Atomic Collision Physics Research at ORNL MIRF,” in Trapping Highly Charged Ions: Fundamentals and Applications, J. Gillaspy, ed., Nova Science Pub., New York, 2000, pp. 117-164. [3] P.R. Harris and F.W. Meyer, Rev. Sci. Inst. 81, 02A310 (2010).
	Slides MOCOBK04 [2.645 MB]