Experimental characterisation of a single-shot spectrometer for high-flux, GeV-scale gamma-ray beams
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arXiv
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| Autori principali: | , , , , , , , , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2023
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| _version_ | 1866913246172151808 |
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| author | Cavanagh, N. Fleck, K. Streeter, M. J. V. Gerstmayr, E. Dickson, L. T. Ballage, C. Cadas, R. Calvin, L. Dufrénoy, S. Dobosz Moulanier, I. Romagnani, L. Vasilovici, O. Whitehead, A. Specka, A. Cros, B. Sarri, G. |
| author_facet | Cavanagh, N. Fleck, K. Streeter, M. J. V. Gerstmayr, E. Dickson, L. T. Ballage, C. Cadas, R. Calvin, L. Dufrénoy, S. Dobosz Moulanier, I. Romagnani, L. Vasilovici, O. Whitehead, A. Specka, A. Cros, B. Sarri, G. |
| contents | We report on the first experimental characterisation of a gamma-ray spectrometer designed to spectrally resolve high-flux photon beams with energies in the GeV range. The spectrometer has been experimentally characterised using a bremsstrahlung source obtained at the Apollon laser facility during the interaction of laser-wakefield accelerated electron beams (maximum energy of 1.7 GeV and overall charge of 207$\pm$62 pC) with a 1 mm thick tantalum target. Experimental data confirms the possibility of performing single-shot measurements, without the need for accumulation, with a high signal to noise ratio. Scaling the results to photons in the multi-GeV range suggests the possibility of achieving percent-level energy resolution, as required, for instance, by the next generation of experiments in strong-field quantum electrodynamics. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2305_02221 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Experimental characterisation of a single-shot spectrometer for high-flux, GeV-scale gamma-ray beams Cavanagh, N. Fleck, K. Streeter, M. J. V. Gerstmayr, E. Dickson, L. T. Ballage, C. Cadas, R. Calvin, L. Dufrénoy, S. Dobosz Moulanier, I. Romagnani, L. Vasilovici, O. Whitehead, A. Specka, A. Cros, B. Sarri, G. Instrumentation and Detectors We report on the first experimental characterisation of a gamma-ray spectrometer designed to spectrally resolve high-flux photon beams with energies in the GeV range. The spectrometer has been experimentally characterised using a bremsstrahlung source obtained at the Apollon laser facility during the interaction of laser-wakefield accelerated electron beams (maximum energy of 1.7 GeV and overall charge of 207$\pm$62 pC) with a 1 mm thick tantalum target. Experimental data confirms the possibility of performing single-shot measurements, without the need for accumulation, with a high signal to noise ratio. Scaling the results to photons in the multi-GeV range suggests the possibility of achieving percent-level energy resolution, as required, for instance, by the next generation of experiments in strong-field quantum electrodynamics. |
| title | Experimental characterisation of a single-shot spectrometer for high-flux, GeV-scale gamma-ray beams |
| topic | Instrumentation and Detectors |
| url | https://arxiv.org/abs/2305.02221 |