LINAC2012 - Classification: 04 Extreme Beams, Sources and Other Technologies / 4F Ion Sources

Paper

Title

Page

Design Issues of the Proton Source for the ESS Facility

1008

L. Celona, L. Allegra, C. Caliri, G. Castro, G. Ciavola, R. Di Giugno, S. Gammino, D. Mascali, L. Neri
INFN/LNS, Catania, Italy

The European Spallation Source facility will be one of the fundamental instruments for science and engineering of the future. A 2.5 GeV proton accelerator is to be built for the neutron production. INFN-LNS is involved in the Design Update for the proton source and Low Energy Beam Transport (LEBT) line. The proton source is required to produce a low emittance 90 mA beam, 2.86 ms pulsed with a repetition rate of 14 Hz. Microwave Discharge Ion Sources (MDIS) enable us to produce such high intensity proton beams characterized by very low emittance (< 0.2 π.mm.mrad). The source design is based on a flexible magnetic system which can be adapted to electrostatic Bernstein waves heating mechanism; this will permit a strong increase in the electron density with an expected boost of the output current. The main features of the source design, including the microwave injection system and beam extraction, will be described hereinafter.

FR1A02

Light Ion ECR Sources State of the Art for Linacs

1055

R. Gobin
CEA/IRFU, Gif-sur-Yvette, France
N. Chauvin, O. Delferrière, O. Tuske, D. Uriot
CEA/DSM/IRFU, France

Since the middle of the 90’s development of high intensity light ion injectors are undertaken at CEA-Saclay. The first 100 mA proton beam has been produced by the SILHI ECR source in the framework of the IPHI project. Ever since, more than 100 mA of protons or deuteron beams, with high purities, have been regularly produced in pulsed or continuous mode, and with very good beam characteristics analyzed in dedicated beam diagnostics. CEA-Saclay is currently involved in several high intensity LINAC projects such as Spiral2, IFMIF-EVEDA and FAIR, and is in charge of their source and LEBT design and construction. This article reports the latest developments and experimental results carried out at CEA-Saclay for the 3 projects. In addition, a review of the developments and beam results performed in other laboratories worldwide will be also presented.

Slides FR1A02 [4.743 MB]

FR1A03

Commissioning and Operation of the Californium Rare Ion Breeder Upgrade at the ATLAS facility

G. Savard
ANL, Argonne, USA

Recently commissioned Californium Rare Ion Breeder Upgrade (CARIBU) of the Argonne National Laboratory ATLAS facility provides low-energy and reaccelerated neutron-rich radioactive beams to address key nuclear physics and astrophysics questions. In its present configuration, a 70 mCi 252Cf source produces fission fragments which are thermalized and collected by a helium gas catcher into a low-energy particle beam with a charge of 1+ or 2+. An electron cyclotron resonance (ECR) ion source functions as a charge breeder in order to raise the ion charge sufficiently for acceleration in the ATLAS linac. The final CARIBU configuration will utilize a 1 Ci 252Cf source to produce radioactive beams with intensities up to 10⁶ ions/sec for use in the ATLAS facility. The ECR charge breeder has achieved record high charge breeding efficiencies of radioactive beams.

Paper	Title	Page
THPB076	Design Issues of the Proton Source for the ESS Facility	1008
	L. Celona, L. Allegra, C. Caliri, G. Castro, G. Ciavola, R. Di Giugno, S. Gammino, D. Mascali, L. Neri INFN/LNS, Catania, Italy
	The European Spallation Source facility will be one of the fundamental instruments for science and engineering of the future. A 2.5 GeV proton accelerator is to be built for the neutron production. INFN-LNS is involved in the Design Update for the proton source and Low Energy Beam Transport (LEBT) line. The proton source is required to produce a low emittance 90 mA beam, 2.86 ms pulsed with a repetition rate of 14 Hz. Microwave Discharge Ion Sources (MDIS) enable us to produce such high intensity proton beams characterized by very low emittance (< 0.2 π.mm.mrad). The source design is based on a flexible magnetic system which can be adapted to electrostatic Bernstein waves heating mechanism; this will permit a strong increase in the electron density with an expected boost of the output current. The main features of the source design, including the microwave injection system and beam extraction, will be described hereinafter.

FR1A02	Light Ion ECR Sources State of the Art for Linacs	1055
	R. Gobin CEA/IRFU, Gif-sur-Yvette, France N. Chauvin, O. Delferrière, O. Tuske, D. Uriot CEA/DSM/IRFU, France
	Since the middle of the 90’s development of high intensity light ion injectors are undertaken at CEA-Saclay. The first 100 mA proton beam has been produced by the SILHI ECR source in the framework of the IPHI project. Ever since, more than 100 mA of protons or deuteron beams, with high purities, have been regularly produced in pulsed or continuous mode, and with very good beam characteristics analyzed in dedicated beam diagnostics. CEA-Saclay is currently involved in several high intensity LINAC projects such as Spiral2, IFMIF-EVEDA and FAIR, and is in charge of their source and LEBT design and construction. This article reports the latest developments and experimental results carried out at CEA-Saclay for the 3 projects. In addition, a review of the developments and beam results performed in other laboratories worldwide will be also presented.
	Slides FR1A02 [4.743 MB]

FR1A03	Commissioning and Operation of the Californium Rare Ion Breeder Upgrade at the ATLAS facility
	G. Savard ANL, Argonne, USA
	Recently commissioned Californium Rare Ion Breeder Upgrade (CARIBU) of the Argonne National Laboratory ATLAS facility provides low-energy and reaccelerated neutron-rich radioactive beams to address key nuclear physics and astrophysics questions. In its present configuration, a 70 mCi 252Cf source produces fission fragments which are thermalized and collected by a helium gas catcher into a low-energy particle beam with a charge of 1+ or 2+. An electron cyclotron resonance (ECR) ion source functions as a charge breeder in order to raise the ion charge sufficiently for acceleration in the ATLAS linac. The final CARIBU configuration will utilize a 1 Ci 252Cf source to produce radioactive beams with intensities up to 10⁶ ions/sec for use in the ATLAS facility. The ECR charge breeder has achieved record high charge breeding efficiencies of radioactive beams.