A wide-acceptance Compton spectrometer for spectral characterization of a medical x-ray source

Espy, Michelle A.; Gehring, Amanda; Belian, Anthony P.; Haines, T. J.; Hunter, James F.; James, Michael R.; Klasky, Marc L.; Mendez, Jacob; Moir, D.C.; Sedillo, Robert; Shurter, R. B.; Stearns, John; Syoc, K. Van; Volegov, P. L.

doi:10.1117/12.2216269

Cited by 5 publications

(2 citation statements)

References 8 publications

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“…The design is similar to the spectrometer designed by Ref. [189], but is significantly more compact. The spectrometer was recently calibrated at a bremsstrahlung beamline [190].…”

Section: Energy Stored (J)mentioning

confidence: 99%

P3: An installation for high-energy density plasma physics and ultra-high intensity laser–matter interaction at ELI-Beamlines

Weber

Bechet

Borneis

et al. 2017

Matter and Radiation at Extremes

137

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ELI-Beamlines (ELI-BL), one of the three pillars of the Extreme Light Infrastructure endeavour, will be in a unique position to perform research in high-energy-density-physics (HEDP), plasma physics and ultra-high intensity (UHI) (1022W/cm2) laser–plasma interaction. Recently the need for HED laboratory physics was identified and the P3 (plasma physics platform) installation under construction in ELI-BL will be an answer. The ELI-BL 10 PW laser makes possible fundamental research topics from high-field physics to new extreme states of matter such as radiation-dominated ones, high-pressure quantum ones, warm dense matter (WDM) and ultra-relativistic plasmas. HEDP is of fundamental importance for research in the field of laboratory astrophysics and inertial confinement fusion (ICF). Reaching such extreme states of matter now and in the future will depend on the use of plasma optics for amplifying and focusing laser pulses. This article will present the relevant technological infrastructure being built in ELI-BL for HEDP and UHI, and gives a brief overview of some research under way in the field of UHI, laboratory astrophysics, ICF, WDM, and plasma optics.

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“…The design is similar to the spectrometer designed by Ref. [189], but is significantly more compact. The spectrometer was recently calibrated at a bremsstrahlung beamline [190].…”

Section: Energy Stored (J)mentioning

confidence: 99%

P3: An installation for high-energy density plasma physics and ultra-high intensity laser–matter interaction at ELI-Beamlines

Weber

Bechet

Borneis

et al. 2017

Matter and Radiation at Extremes

137

View full text Add to dashboard Cite

show abstract

“…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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Compact high energy x-ray spectrometer based on forward Compton scattering for high intensity laser plasma experiments

Singh

Versaci

García

et al. 2018

Review of Scientific Instruments

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This article describes the design and presents recent results from testing and calibration of a forward Compton scattering high energy X-ray spectrometer. The calibration was performed using a bremsstrahlung source on the photon scattering facility at the Electron linac for beams with high brilliance and low emittance accelerator at Helmholtz-Zentrum Dresden-Rossendorf, which provides high energy X-ray photons with energies up to 18 MeV. The calibration was conducted at different bremsstrahlung end point energies-10.5, 13, 15, and 18 MeV. Experimental spectra show a systematic increase in the maximum energy, photon temperature, and flux. The spectrometer is effective for an energy range of 4-20 MeV with energy resolution. The spectrometer operates in low vacuum with pressure less than 0.1 mbar. Experimental tests showed that operating such a spectrometer in air causes a spuriously enhanced high energy signal due to Compton scattering of photons within air. The article also describes the design and shielding considerations which helped to achieve a dynamic range greater than 30 with this spectrometer. The comparison between the experimental results and Monte Carlo simulations are also presented.

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A wide-acceptance Compton spectrometer for spectral characterization of a medical x-ray source

Cited by 5 publications

References 8 publications

P3: An installation for high-energy density plasma physics and ultra-high intensity laser–matter interaction at ELI-Beamlines

P3: An installation for high-energy density plasma physics and ultra-high intensity laser–matter interaction at ELI-Beamlines

Diagnostics for ultrashort X-ray pulses using silicon trackers

Compact high energy x-ray spectrometer based on forward Compton scattering for high intensity laser plasma experiments

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