Developing a diagnostic for energetic laser-Compton produced photon beams

Quiter, Brian J.; Zhang, Y.; Barton, Paul; Geddes, C. G. R.; Garcia-Sciveres, M.; Janecek, Martin; Vetter, K.

doi:10.1016/j.nima.2018.06.031

Cited by 6 publications

(4 citation statements)

References 36 publications

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“…Various methods have been developed to measure ultrashort X-rays spectrum: spectrometer based on diffraction mechanism [17], ross pair method based on K-edges of different elements [18], filter stack spectrometer based on absorption and attenuation [19,20], Compton spectrometer based on electron scattering [21,22], and activation method [23]. Imaging plates (IP) [20,24] or thermoluminescence detectors (TLD) [25,26] are commonly utilized as detection materials due to their dose rate independence and resistance to electromagnetic pulses (EMP).…”

Section: Introductionmentioning

confidence: 99%

Spectrometer for ultrashort X-ray based on scintillator and optical fiber: proof of principle study

Song

Qiu

et al. 2023

J. Inst.

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An active filter stack spectrometer based on the scintillator and optical fiber is proposed and characterized for measuring the ultrashort X-ray spectrum. The active filter stack spectrometer consists of multiple detection modules, each of which has three components: a scintillator, an optical fiber, and a PMT. After simulation optimization of the detection module for better coupling efficiency, a detection module was fabricated and assembled for subsequent coupling efficiency measurements. Two proof-of-principle experiments using an X-ray source were conducted to validate the feasibility of this active filter stack spectrometer.

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Section: Introductionmentioning

confidence: 99%

Spectrometer for ultrashort X-ray based on scintillator and optical fiber: proof of principle study

Song

Qiu

et al. 2023

J. Inst.

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“…Different approaches have been developed to infer the photon energy distribution, including the crystal spectrometer [14][15][16], ross pair [17], filter stack spectrometer [18][19][20][21][22][23][24], Compton scattering spectrometer [25][26][27], nuclear activation [28]. Among these methods, filter stack spectrometers (also referred to as few-channel spectrometer or bremsstrahlung spectrometer) is the most suitable approach for diagnosing the photons with energy ranging from a few tens of keV up to a few MeVs.…”

Section: Introductionmentioning

confidence: 99%

A simulation optimization design of the filter stack spectrometer for laser-plasma interaction experiment

Song

Zhang

et al. 2023

J. Inst.

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Filter stack spectrometers are widely employed in laser facilities for the spectrum measurement of bremsstrahlung photons. However, this method suffers from large uncertainty of unfolding due to its intrinsic limit resolution. For this, an optimization study on filter stack spectrometer is conducted. This procedure is implemented by a hybrid particle swarm optimization and genetic algorithm (PSO-GA). Monte-Carlo particle transport code Fluka is used for the simulation of the response matrix. Gravel algorithm, based on the least-square method, is used for the unfolding. For mono-energetic photons, this optimized filter stack spectrometer design provides a better energy resolution. For continuous distribution, this optimized filter stack spectrometer design yields a narrower unfolding solution space in the presence of measurement error.

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“…Hence diagnosing laser-plasma generated X-ray pulses is challenging. Many techniques, e.g., diffraction-based [12][13] [14], filter-based [15][16] [17] [18] [19], Compton-scatteringbased [20] [21] [22] [23], and single-photon-counting-based [24] [25], have been proposed and applied in measurements of the spectrum of ultrashort X-ray pulses.…”

Section: Introductionmentioning

confidence: 99%

Diagnostics for ultrashort X-ray pulses using silicon trackers

Wen,

Yu,

et al. 2021

Preprint

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The spectrum of laser-plasma generated X-rays is very important, it characterizes electron dynamics in plasma and is basic for applications. However, the accuracies and efficiencies of existing methods to diagnose the spectrum of laserplasma based X-ray pulse are not very high, especially in the range of several hundred keV. In this study, a new method based on electron tracks detection to measure the spectrum of laser-plasma produced X-ray pulses is proposed and demonstrated. Laser-plasma generated X-rays are scattered in a multi-pixel silicon tracker. Energies and scattering directions of Compton electrons can be extracted from the response of the detector, and then the spectrum of X-rays can be reconstructed. Simulations indicate that the energy resolution of this method is approximately 20% for X-rays from 200 to 550 keV for a silicon-oninsulator pixel detector with 12 µm pixel pitch and 500 µm depletion region thickness. The results of a proof-of-principle experiment based on a Timepix3 detector are also shown.

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Developing a diagnostic for energetic laser-Compton produced photon beams

Cited by 6 publications

References 36 publications

Spectrometer for ultrashort X-ray based on scintillator and optical fiber: proof of principle study

Spectrometer for ultrashort X-ray based on scintillator and optical fiber: proof of principle study

A simulation optimization design of the filter stack spectrometer for laser-plasma interaction experiment

Diagnostics for ultrashort X-ray pulses using silicon trackers

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