Compact in-vacuum gamma-ray spectrometer for high-repetition rate PW-class laser–matter interaction
With the advent of high repetition rate laser facilities, novel diagnostic tools compatible with these advanced specifications are required. This paper presents the design of an active gamma-ray spectrometer intended for these high repetition rate experiments, with particular emphasis on functionality within a PW level laser-plasma interaction chamber's extreme conditions. The spectrometer uses stacked scintillators to accommodate a broad range of gamma-ray energies, demonstrating its adaptability for various experimental setups. In addition, it has been engineered to maintain compactness, electromagnetic pulse resistance, and ISO-5 cleanliness requirements while ensuring high sensitivity. The spectrometer has been tested in real conditions inside the PW-class level interaction chamber at the BELLA center, LBNL. The paper further details the calibration process, which utilizes a 60Co radioactive source, and describes the unfolding technique implemented through a stochastic minimization method.
Authors
- Gaëtan Fauvel (ORCID: https://orcid.org/0000-0002-1088-3412)
- Sahel Hakimi (ORCID: https://orcid.org/0000-0002-2493-564X)
- F. P. Condamine (ORCID: https://orcid.org/0000-0002-4163-6895)
- O. Klimo (ORCID: https://orcid.org/0000-0002-0565-2409)
- S. Weber (ORCID: https://orcid.org/0000-0003-3154-9306)
- Alexey Arefiev (ORCID: https://orcid.org/0000-0002-0597-0976)
- A. McIlvenny (ORCID: https://orcid.org/0000-0002-1044-1534)
- Kavin Tangtartharakul (ORCID: https://orcid.org/0000-0001-7992-924X)
- K. Nakamura (ORCID: https://orcid.org/0000-0001-9842-7114)
- M. J.-E. Manuel (ORCID: https://orcid.org/0000-0002-5834-1161)
- Peter Rubovič (ORCID: https://orcid.org/0000-0002-4279-713X)
- Jared De Chant (ORCID: https://orcid.org/0000-0002-9914-4631)
- Lieselotte Obst-Huebl (ORCID: https://orcid.org/0000-0001-9236-8037)
Institutions
- Lawrence Berkeley National Laboratory (US)
- University of California San Diego (US)
- Extreme Light Infrastructure Beamlines (CZ)
- Czech Technical University in Prague (CZ)
- General Atomics (United States) (US)
Publication Details
- Journal
- Review of Scientific Instruments
- Published
- 2025-02-01
- DOI
- https://doi.org/10.1063/5.0206348
- Citations
- 2
- Primary Topic
- Laser-Plasma Interactions and Diagnostics
- Type
- article
- Field-Weighted Citation Impact
- 3.74
Funders
- National Science Foundation
- Grantová Agentura České Republiky
- Defense Advanced Research Projects Agency
- Fusion Energy Sciences
- High Energy Physics