Spiral beams

 Accelerator Operation Group
          F. Chautard
        update : 08 dec 2009

SPIRAL BEAMS

RADIOACTIVE  ION  BEAM  INTENSITIES

The list of radioactive nuclei produced by the SPIRAL facility are given in the table of elements below.

By clicking an element of interest in the table a new table appears where yields are with a code of colours:

• Measured yield:  Beam already produced with the SPIRAL Facility whether in the Low Energy Beamline (LEB)
  or accelerated and transported to the physicist Target. When accelerated, the energy beam is reported.
  The primary beam used for the fragmentation on the source target is specified with its power and energy.
  The figures have to be taken within a factor 2
  
  
• Expected yield:  Is the yield after acceleration from measured yield in the LEB. An efficiency of  20% is usually taken.
  
  
• Extrapolated yield:  An extrapolation is done from beam production yields during SIRA experiment at GANIL
  with a 400W primary beam power to a 1.4kW. A conservative order of magnitude have to be taken.

The LIRAT experiments are include in the LEB.

Graphs of abundance versus charge distribution may help to determine the abundance of new beams.

The CIME working diagram shows the beams done since the beginning of the SPIRAL and the possibility
of beam acceleration as a function of the charge over mass (Q/m) ratio.

All these figures are purely indicative and the feasibility of a beam should be discussed with the Operation
group of Ganil.

CIME WORKING DIAGRAM