ELISA (ELectrostatIc Storage ring for ions, Aarhus) was built in 1998 as the first electrostatic storage ring in the world. It has since been copied, and several new electrostatic storage rings are under construction in Japan, Germany and Sweden.

Schematic Diagram of ELISA

ELISA enables storage of low-energy ions for extended periods of time. It allows interaction of the stored ions with laser light and low-energy electrons for studies in photo-, bio-, cluster and molecular physics.

ELISA complements the magnetic storage ring ASTRID, where ions can be stored at much higher energies.

Parameters of ELISA:

Parameter	Value
Highest storage energy	22 keV/charge
Average pressure	<10-11 mBar
Circumference	7.6 m
Storage time	tens of s up to minutes
160° spherical deflectors
Electrode radii	235 and 265 mm
Nominal voltages	±3.25 kV
10° deflectors
Plate distance	50 mm
Plate length	100 mm
Nominal voltages	± 2.4 kV
Electrostatic Quadrupoles
Inscribed radius	26.2 mm
Electrode length	50 mm
Nominal voltages	± 0.37 kV

 

ELISA is used by several groups in the Department of Physics and Astronomy. You can read more about ELISA and the research carried out at the following links.

• http://www.phys.au.dk/~sbn/research.htm
• http://www.phys.au.dk/~nfsecool/
• http://www.phys.au.dk/mcdg/

You can read more about ELISA here:

• Design and first operation of the Electrostatic Storage Ring, ELISA
• Operational experience with the  Electrostatic Storage Ring, ELISA
• Intensity limitation of the the Electrostatic Storage Ring, ELISA

For further information contact 

 

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Last Modified 08 July 2009