Mr. Marvin Reimold Profile

Marvin Reimold

at Helmholtz-Zentrum Dresden-Rossendorf eV

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Publications (4)

Proceedings Article | 9 June 2023 Presentation

Enhanced ion acceleration from transparency-driven foils demonstrated at two ultraintense laser facilities (Conference Presentation)

Nicholas Dover, Tim Ziegler, Stefan Assenbaum, Constantin Bernert, Stefan Bock, Florian-Emanuel Brack, Thomas Cowan, Emma Jane Ditter, Marco Garten, Lennart Gaus, Ilja Goethel, George Hicks, Hiromitsu Kiriyama, Thomas Kluge, James Koga, Akira Kon, Kotaro Kondo, Stephan Kraft, Florian Kroll, Hazel Lowe, Josefine Metzkes-Ng, Tatsuhiko Miyatake, Zulfikar Najmudin, Thomas Püschel, Martin Rehwald, Marvin Reimold, Hironao Sakaki, Hans-Peter Schlenvoigt, Keiichiro Shiokawa, Marvin E. Umlandt, Ulrich Schramm, Karl Zeil, Mamiko Nishiuchi

Proceedings Volume PC12579, PC125790Q (2023) https://doi.org/10.1117/12.2669273

KEYWORDS: Ions, Transparency, Pulsed laser operation, Ion lasers, Plasma, Modeling, Mirrors, Laser systems engineering, Laser irradiation, Laser energy

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Proceedings Article | 8 June 2023 Presentation

Tumor irradiation in mice with a laser-accelerated proton beam

Florian-Emanuel Brack, Florian Kroll, Elke Beyreuther, Stephan Kraft, Josefine Metzkes-Ng, Jörg Pawelke, Marvin Reimold, Ulrich Schramm, Marvin Elias Paul Umlandt, Tim Ziegler, Karl Zeil

Proceedings Volume PC12583, PC1258309 (2023) https://doi.org/10.1117/12.2665304

KEYWORDS: Tumors, In vivo imaging, Laser irradiation, Animal model studies, Tumor growth modeling, Reliability, Mouse models, Laser radiation, High power lasers, Dosimetry

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Proceedings Article | 18 April 2021 Presentation

Fully characterised and online monitored beamline for high-dose-rate laser-proton irradiation experiments at Draco PW

Florian-Emanuel Brack, Florian Kroll, Lennart Gaus, Constantin Bernert, Elke Beyreuther, Thomas Cowan, Leonhard Karsch, Stephan Kraft, Elisabeth Lessmann, Josefine Metzkes-Ng, Jörg Pawelke, Martin Rehwald, Marvin Reimold, Hans-Peter Schlenvoigt, Ulrich Schramm, Manfred Sobiella, Marvin Umlandt, Tim Ziegler, Karl Zeil

Proceedings Volume 11790, 1179008 (2021) https://doi.org/10.1117/12.2596503

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Laser-driven proton pulse provide unique properties in terms of pulse structure (ns) and instantaneous dose rate (10^9 Gy/s) but - inherently broadband and highly divergent - pose a challenge to established beamline concepts on the path to application-adapted irradiation field formation, particularly for three-dimensional cases. We present the successful implementation and characterisation of a highly efficient and tuneable dual pulsed solenoid beamline at the Draco PW facility[1] to generate volumetric dose distribution tailored to specific applications[2]. The vast experimental scope and already successfully performed studies range from systematic volumetric in-vivo tumour irradiations in a dedicated mouse model (with a stable mean dose delivery of ±10 % and a spatial dose homogeneity of ±5 % over a cylindrical volume of 5 mm diameter and height) to high-dose-rate irradiations in the FLASH regime (using proton peak dose rates of up to 10^9 Gy/s with about 20 Gy/shot homogeneously over a cylindrical sample volume of 4.5 mm diameter and 3 mm height) as well as particle diagnostics commissioning (with a multitude of spatial and spectral dose distributions). The beamline setup is complemented by a complex beam monitoring and dosimetry detector suite adapted to the ultra-high dose rate pulses and is in its unique synergy and redundancy capable of %-level precision dose delivery to samples as required for systematic irradiation studies. In addition to established radiochromic film dosimetry, the detector suite includes saturation-corrected (transmission) ionisation chambers [3] as well as screen and bulk scintillator setups, partly with tomographic reconstruction capabilities for 3D dose distribution retrieval. Moreover, non-invasive, single-shot-capable online time-of-flight-based spectral characterisation of filtered proton pulses has proven a powerful tool for beam monitoring as well as dosimetric purposes. In this presentation the complex and versatile dose delivery system of laser-driven protons at the Draco PW using pulsed solenoids will be discussed. Its characterisation, technological development and improvement as well as the dosimetry suite as a vital part of the precise dose delivery will be addressed, while the presentation by U. Schramm covers recent experimental activities in detail. [1] T. Ziegler, et al., Proton beam quality enhancement by spectral phase control of a PW-class laser system, https://arxiv.org/abs/2007.11499 (2020) [2] Brack, et al., Spectral and spatial shaping of laser-driven proton beams using a pulsed high-field magnet beamline, SciRep, 10:9118, (2020) [3] Gotz M, et al., A new model for volume recombination in plane‐parallel chambers in pulsed fields of high dose‐per‐pulse. Phys Med Biol., 62: 8634, (2017)

Proceedings Article | 18 April 2021 Presentation

First systematic in vivo tumor irradiation in mice with laser-accelerated and dose-homogenized proton beams from the Draco PW laser

Florian Kroll, Florian-Emanuel Brack, Elisabeth Bodenstein, Kerstin Brüchner, Leonhard Karsch, Stephan Kraft, Elisabeth Lessmann, Sebastian Meister, Josefine Metzkes-Ng, Alexej Nossula, Jörg Pawelke, Jens Pietzsch, Marvin Reimold, Ulrich Schramm, Marvin E. Umlandt, Karl Zeil, Elke Beyreuther

Proceedings Volume 11779, 117790I (2021) https://doi.org/10.1117/12.2589523

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