Figure 1

(a) Schematic of the proton beamline at the Draco laser facility. At positions P1–5 detectors can be installed. (b) Representative proton source characteristics from RCF stack measurements: integrated TNSA proton spectrum (top) and the angular distribution (bottom) for full energy Draco PW shot on a 80 nm plastic target. The orange line represents a parametrisation to the shown RCF data. (c) Penetration depth (bulk scintillator, top) and lateral dose distributions of proton beams of main energy ~19 MeV focused at P4 via single solenoid transport (right column) or dual solenoid transport (left column). The lateral dose distributions are recorded on RCF (corresponding Bragg peak energies 7.9 MeV and 18.6 MeV) and the red circles represent a typical aperture size (5 mm diameter) for proposed irradiation experiments.