Ion irradiation and test facility.

From the source to the target - D.I.S Germany offers innovative products for a broad spectrum of irradiation facilities. All products provided by our company promote research and development to take ion beam technology to the next level.
The content of this page is an introduction to the physics and technology of ion beam systems.   


Wien filter

Wien filters are charged particle beam analytical elements used for separating charged particle beams by velocity using orthogonally superimposed magnetic and electric fields.
Great advantages are a low weight and a compact size compared to other systems used for particle separation.

Refer to our tutorial for detailed information and the physical background: 


Electron Beam Ion Sources

G. Zschornack, M. Schmidt, and A. Thorn, “Electron beam ion sources”, CERN Yellow Report, vol. CERN-2013-007, pp. 165–201, 2014


Electron beam ion sources (EBISs) are ion sources that work based on the principle of electron impact ionization, allowing the production of very highly charged ions. The ions produced can be extracted as a DC ion beam as well as ion pulses of different time structures. In comparison to most of the other known ion sources, EBISs feature ion beams with very good beam emittances and a low energy spread. Furthermore, EBISs are excellent sources of photons (X-rays, ultraviolet, extreme ultraviolet, visible light) from highly charged ions. This chapter gives an overview of EBIS physics, the principle of operation, and the known technical solutions. Using examples, the performance of EBISs as well as their applications in various fields of basic research, technology and medicine are discussed.

Electron beam ion source with integrated Wien filter

M. Schmidt, H. Peng, G. Zschornack, and S. Sykora, „A compact electron beam ion source with integrated wien filter providing mass and charge state separated beams of highly charged ions”, Review of Scientific Instruments, vol. 80, no. 6, p. 063301, 2009


A Wien filter was designed for and tested with a room temperature electron beam ion source (EBIS). Xenon charge state spectra up to the charge state Xe46+ were resolved as well as the isotopes of krypton using apertures of different sizes. The complete setup consisting of an EBIS and a Wien filter has a length of less than 1 m substituting a complete classical beamline setup. The Wien filter is equipped with removable permanent magnets. Hence total beam current measurements are possible via simple removal of the permanent magnets. In dependence on the needs of resolution a weak (0.2 T) or a strong (0.5 T) magnets setup can be used. In this paper the principle of operation and the design of the Wien filter meeting the requirements of an EBIS are briefly discussed. The first ion beam extraction and separation experiments with a Dresden EBIS are presented.