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ICIS 2007

Electron cyclotron resonance ion sources in use for heavy ion cancer therapy

The use of electron cyclotron resonance (ECR) ion sources for producing ion beams for heavy ion cancer therapy has been established for more than ten years. After the Heavy Ion Medical Accelerator (HIMAC) at Chiba, Japan started therapy of patients with carbon ions in 1994 the first carbon ion beam for patient treatment at the accelerator facility of GSI was delivered in 1997. ECR ion sources are the perfect tool for providing the required ion beams with good stability, high reliability, and easy maintenance after long operating periods. Various investigations were performed at GSI with different combinations of working gas and auxiliary gas to define the optimal beam conditions for an extended use of further ion species for the dedicated Heidelberg Ion Beam Therapy (HIT) facility installed at the Radiological University Hospital Heidelberg, Germany. Commercially available compact all permanent magnet ECR ion sources operated at 14.5 GHz were chosen for this facility. Besides for 12C4+ these ion sources are used to provide beams of 1H31+, 3He1+, and 16O6+. The final commissioning at the HIT facility could be finished at the end of 2006.  more...

2008 American Institute of Physics. [DOI: 10.1063/1.2805226]

Author: K. Tinschert et al.

High current ion beam transport using solenoids

In the framework of the future project FAIR several upgrade programs and construction of new facilities are in progress such as the U4+ upgrade for the existing high current injector and the new 70 MeV proton injector. For both injectors solenoids in the low energy beam transport section are foreseen to inject the beam into the following rf accelerator. The paper presents beam quality measurements of high current ion beams behind a solenoid using a slit-grid emittance measurement device, viewing targets, and a pepper pot measurement device at the high current test bench at GSI.   more...

2008 American Institute of Physics. [DOI: 10.1063/1.2801351]

Author: R. Hollinger et al.

Status of high current ion source operation at the GSI accelerator facility

Vacuum arc ion sources, Penning ion sources, and filament driven multicusp ion sources are used for the production of high current ion beams of a variety of metallic and gaseous ions at the GSI accelerator facility. For accelerator operation, the ion sources have to provide a stable beam over a long period of time with an energy of 2,2 keV/u and a maximum mass over charge ratio of 65. The status of beam time operation at the high current injector is presented here giving an outline on important ion source data, such as ion beam current, ion beam spectrum, transversal emittance, life time, duty factor, and transmission along the low energy beam transport section.   more...

2008 American Institute of Physics. [DOI: 10.1063/1.2801623]

Author: R. Hollinger et al.