1 Sensitivity of coupled Sensitivity of coupled laser-accelerated ion laser-accelerated ion beams into conventional beams into conventional structures structures P. Antici, M. Migliorati, A. Mostacci, L. Picardi, L.Palumbo, C. Ronsivalle P. Antici, L. Lancia, M. Migliorati, A. Mostacci, L. Palumbo, L. Picardi, C. Ronsivalle
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1 Sensitivity of coupled laser- accelerated ion beams into conventional structures P. Antici, M. Migliorati, A. Mostacci, L. Picardi, L.Palumbo, C. Ronsivalle.
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1
Sensitivity of coupled laser-Sensitivity of coupled laser-accelerated ion beams into accelerated ion beams into
conventional structuresconventional structures
P. Antici, M. Migliorati, A. Mostacci, L. Picardi, L.Palumbo, C. Ronsivalle
P. Antici, L. Lancia, M. Migliorati, A. Mostacci, L. Palumbo, L. Picardi, C. Ronsivalle
2
Motivation and context
There are several conventional beamline facilities that are looking at laser-driven beamline projects
CALAAPOLLON
3
Starting point: we consider „today“ measured parameters and try to make beamlines out of it
---- -- -- -- -- --
--
+ -+ -+ -+ -
Surface contaminant (H2O)
H+ ion
Bulk Target (Al)
e-
Laser:few J / ~1 ps (>10 TW)
I2 >1018 W cm-2 m2Up to 67 MeVEmittance 100 times better thanconventional acceleratorsDuration a few ps
TNSA 100 TW laser
Issue: Large energy spreadLarge beam divergence(Low energy)
---- -- -- -- -- --
--
---- -- -- -- -- --
--
+ -+ -+ -+ -
Surface contaminant (H2O)
H+ ionH+ ion
Bulk Target (Al)
e-e-
Laser:few J / ~1 ps (>10 TW)
I2 >1018 W cm-2 m2Up to 67 MeVEmittance 100 times better thanconventional acceleratorsDuration a few ps
TNSA 100 TW laser
Issue: Large energy spreadLarge beam divergence(Low energy)
Issue: Large energy spread Large beam divergence (Low energy)
4
General scheme for beam capture and post-acceleration
Drift space (to exit target
chamber)
Conventional capturing section
(4 or 5 Quadrupoles)
Laser-generated proton source
Accelerating section (48 DTL cells)
Device to focus
and energy-select protons
t=350 fsI~3×1018 W.cm-2
=1 µmCPA1
diverging protonbeam
proton source foil
CPA2
focused protonbeam
t=350 fsI~3×1018 W.cm-2
=1 µmCPA1
diverging protonbeam
proton source foil
CPA2
focused protonbeam
Looking for the best compromise in terms of1) Highest (stable) energy 2) Highest dose 3) Lowest energy spread4) Smallest beam divergence5) Fully characterized source6) Feasible
5
Starting point: we consider „today“ measured parameters and try to make beamlines out of it
- - - - - - - - - - - - - - --
+ -+ -+ -+ -
Surface contaminant (H2O)
H+ ion
Bulk Target (Al)
e-
Laser:few J / ~1 ps (>10 TW)
I2 >1018 W cm-2 m2Up to 67 MeVEmittance 100 times better than conventional acceleratorsDuration a few ps
TNSA 100 TW laser
Issue: Large energy spread Large beam divergence (Low energy)