Proof-of-Principle of Absolute Dosimetry Using an Absorbed Dose Portable Calorimeter with Laser-Driven Proton Beams. - McCallum, Sean; Lee, Nigel; Milluzzo, Giuliana; McIlvenny, Aodhan; Borghesi, Marco; Subiel, Anna; Romano, Francesco (Applied Sciences (2076-3417), 2023)