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P: Fachverband Plasmaphysik

P 10: Laser Plasmas I

P 10.2: Vortrag

Dienstag, 6. März 2018, 14:30–14:45, KI 1.174

Calorimetry techniques for ultra-intense laser-plasma experiments — •Maria Molodtsova^1,2, Anna Ferrari¹, Alejandro Laso Garcia¹, Arie Irman¹, Benjamin Lutz^1,2, Josefine Metzkes-Ng¹, Irene Prencipe¹, Manfred Sobiella¹, Daniel Stach¹, David Weinberger^1,2, and Thomas Cowan^1,2 — ¹Helmholtz-Zentrum Dresden-Rossendorf, Germany — ²Technische Universität Dresden, Germany

With ultra-high intensity short-pulse lasers generating plasma, new extreme states of matter can be created, and new concepts for particle acceleration, material science, and fusion energy can be explored. A critical component is the characterization of relativistic electrons that are accelerated and transported in the material of the target, generating ultra-intense bremsstrahlung.
Measuring the bremsstrahlung spectrum is a crucial aspect of plasma diagnostics. In this work it is showed how calorimetric techniques, based on longitudinally resolved measurements of energy deposition, are especially suitable for the reconstruction of the photon spectra.
Multi-layered scintillator calorimeters with different readouts are under development at Helmholtz-Zentrum Dresden-Rossendorf for this purpose. Prototypes have been tested at the ELBE facility both at the γELBE beamline with a well-known bremsstrahlung spectrum and in a laser-plasma environment at DRACO.