Speaker
Description
LhARA, which stands for “Laser-hybrid Accelerator for
Radiobiological Applications”, is a novel and flexible facil-
ity dedicated to research in radiobiology. A proton beam
of energy up to 15 MeV can be produced by a laser driven
source, the beam then enters a Fixed Field Alternating (FFA)
gradient accelerator for acceleration to produce a variable ex-
traction energy between 15-127 MeV. To avoid uncontrolled
beam loss, the operational tune was picked carefully to avoid
resonances. The magnetic field must be adjusted to ensure
that the tune stays at the same working point for different
energy ranges. The FFA ring uses combined-function spiral
magnets, which create a radial magnetic gradient through
distributed conductors wrapped around the pole, each car-
rying a different current. A three-dimensional study was
carried out in OPERA 3D and the parameters of the magnet
were optimized. The results showed that resonances up to
fourth order were avoided for the entire range of acceleration
for different operational energies entire range of acceleration and different operational energies.
| Region represented | Europe |
|---|---|
| Paper preparation format | LaTeX |
