ECRIS2010 - List of Keywords (cyclotron)

Paper	Title	Other Keywords	Page
MOCOAK04	Status of the VENUS ECR Ion Source	ion, ion-source, ECR, plasma	11
	D. Leitner, P. Ferracin, A. Hodgkinson, M. Leitner, T.J. Loew, C.M. Lyneis, G.L. Sabbi LBNL, Berkeley, California, USA G. Machicoane, E. Pozdeyev NSCL, East Lansing, Michigan, USA
	The fully superconducting 28-GHz VENUS ECR ion source serves as prototype injector for the Facility for Rare Isotope Beams (FRIB) project at Michigan State University (MSU) as well as injector ion source for the 88-Inch Cyclotron at Lawrence Berkeley National Laboratory (LBNL). As such the source has produced many record beams of high charge state as well as high-intensity, medium charge state ions. As the FRIB project has now entered the preliminary design phase, Lawrence Berkeley National Laboratory is involved in the design of two new VENUS-like ECR injector ion sources for the FRIB facility. This paper will review the requirements for the FRIB injector, and present VENUS cryostat design changes which will allow installation on a 100 kV platform. In addition, a possible future upgrade path for the FRIB injector using an advanced Nb3Sn magnet structure is described. In 2008, at LBNL the VENUS ECR ion source experienced a major setback when one of the sextupole leads evaporated during a quench caused by a low liquid helium level in the cryostat. The repair process and the long reconstruction effort as well as the status of the reinstallation will be described.
	Slides MOCOAK04 [4.180 MB]

MOCOBK02	Present Status of FLNR (JINR) ECR Ion Sources	ion, ion-source, ECR, injection	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]

MOPOT010	The Light Ion Guide CB-ECRIS Project at the Texas A&M University Cyclotron Institute	ion, ECRIS, light-ion, plasma	55
	G. Tabacaru Texas A&M University, Cyclotron Institute, College Station, USA J. Ärje JYFL, Jyväskylä, Finland D.P. May Texas A&M University Cyclotron Institute, College Station, Texas, USA
	Texas A&M is currently configuring a scheme for the production of radioactive-ion beams that incorporates a light-ion guide (LIG) coupled with an ECRIS constructed for charge-boosting (CB-ECRIS). This scheme is part of an upgrade to the Cyclotron Institute and is intended to produce radioactive beams suitable for injection into the K500 superconducting cyclotron. The principle of operation is the following: a primary beam from the K150 cyclotron interacts with a production target placed in the gas cell. A continuous flow of helium gas maintains a constant pressure of 500 mbar maximum in the cell. Recoils are thermalized in the helium buffer gas and ejected from the cell within the gas flow through a small exit hole. The positively charged recoil ions (1+) are guided into a 2.5 m long, rf-only hexapole and will be transported in this manner on-axis into the CB-ECRIS. The CB-ECRIS operates at 14.5 GHz and has been specially constructed by Scientific Solutions of San Diego, California for charge-boosting. An overview of the entire project will be presented with details on different construction phases. Specific measurements and results will be presented as well as future development plans.
	Poster MOPOT010 [12.413 MB]

Paper

Title

Other Keywords

Page

MOCOAK04

Status of the VENUS ECR Ion Source

ion, ion-source, ECR, plasma

11

D. Leitner, P. Ferracin, A. Hodgkinson, M. Leitner, T.J. Loew, C.M. Lyneis, G.L. Sabbi
LBNL, Berkeley, California, USA
G. Machicoane, E. Pozdeyev
NSCL, East Lansing, Michigan, USA

The fully superconducting 28-GHz VENUS ECR ion source serves as prototype injector for the Facility for Rare Isotope Beams (FRIB) project at Michigan State University (MSU) as well as injector ion source for the 88-Inch Cyclotron at Lawrence Berkeley National Laboratory (LBNL). As such the source has produced many record beams of high charge state as well as high-intensity, medium charge state ions. As the FRIB project has now entered the preliminary design phase, Lawrence Berkeley National Laboratory is involved in the design of two new VENUS-like ECR injector ion sources for the FRIB facility. This paper will review the requirements for the FRIB injector, and present VENUS cryostat design changes which will allow installation on a 100 kV platform. In addition, a possible future upgrade path for the FRIB injector using an advanced Nb3Sn magnet structure is described. In 2008, at LBNL the VENUS ECR ion source experienced a major setback when one of the sextupole leads evaporated during a quench caused by a low liquid helium level in the cryostat. The repair process and the long reconstruction effort as well as the status of the reinstallation will be described.

Slides MOCOAK04 [4.180 MB]

MOCOBK02

Present Status of FLNR (JINR) ECR Ion Sources

ion, ion-source, ECR, injection

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]

MOPOT010

The Light Ion Guide CB-ECRIS Project at the Texas A&M University Cyclotron Institute

ion, ECRIS, light-ion, plasma

55

G. Tabacaru
Texas A&M University, Cyclotron Institute, College Station, USA
J. Ärje
JYFL, Jyväskylä, Finland
D.P. May
Texas A&M University Cyclotron Institute, College Station, Texas, USA

Texas A&M is currently configuring a scheme for the production of radioactive-ion beams that incorporates a light-ion guide (LIG) coupled with an ECRIS constructed for charge-boosting (CB-ECRIS). This scheme is part of an upgrade to the Cyclotron Institute and is intended to produce radioactive beams suitable for injection into the K500 superconducting cyclotron. The principle of operation is the following: a primary beam from the K150 cyclotron interacts with a production target placed in the gas cell. A continuous flow of helium gas maintains a constant pressure of 500 mbar maximum in the cell. Recoils are thermalized in the helium buffer gas and ejected from the cell within the gas flow through a small exit hole. The positively charged recoil ions (1+) are guided into a 2.5 m long, rf-only hexapole and will be transported in this manner on-axis into the CB-ECRIS. The CB-ECRIS operates at 14.5 GHz and has been specially constructed by Scientific Solutions of San Diego, California for charge-boosting. An overview of the entire project will be presented with details on different construction phases. Specific measurements and results will be presented as well as future development plans.

Poster MOPOT010 [12.413 MB]