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AKBP: Arbeitskreis Beschleunigerphysik
AKBP 6: New Accelerator Concepts - Models and Experiments
AKBP 6.1: Talk
Tuesday, March 19, 2024, 11:00–11:15, E 020
Absolute lanex screen calibration for laser accelerated proton bunch detection — •Joshua Dietrich Schilz1, Elisabeth Bodenstein1,2, Florian-Emanuel Brack1, Martin Rehwald1, Florian Kroll1, Jörg Pawelke1,2, Felix Horst1,2, Ulrich Schramm1,3, Karl Zeil1, and Josefine Metzkes-Ng1 — 1Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany — 2OncoRay, Dresden, Germany — 3TUD Dresden, Dresden, Germany
Plasma-based accelerators leverage the robust electromagnetic fields sustained by plasmas for propelling charged particles to elevated energy levels. The creation of accelerating field structures within plasma is achieved through the application of intense laser pulses or charged particle beams. Laser-plasma accelerated (LPA) proton bunches are now applied for research fields ranging from ultra-high dose rate radiobiology to material science. For a long time, multi channel plates (MCP) have been used to characterize these proton bunches in e.g. Thomson parabolas (TPS). It is difficult to asses an absolute proton number calibration from these MCPs due to their nonlinear response. Scintillating lanex screens emerge as a promising and already implemented alternative in LPA facilities for the detection of ions and electrons. This study introduces an absolute proton number calibration for one of the most sensitive screens, the DRZ High (Mitsubishi Chemical Corporation, Duesseldorf, Germany), with the added benefit of seamless transferability to other facilities. Additionally, we delve into the quenching properties of the lanex screen, further enhancing our understanding of its capabilities.
Keywords: absolute calibration; lanex; scintillating screen; Thomson parabola