Soft x-ray power diagnostics for fusion experiments at NIF, Omega, and Z facilities

Rubery, M. S.; Jones, M. C.; Pelepchan, N.; Stolte, Wayne C.; Heinmiller, J.

doi:10.1063/5.0131949

Cited by 7 publications

(1 citation statement)

References 83 publications

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“…A large-scale IFE demonstrator can only be successful if a significant effort of the project is put into fusion-relevant diagnostics [150][151][152][153][154] . They are required to characterize fusion products, the plasma and capsule evolution over time and the electromagnetic and particle radiation emitted.…”

Section: Diagnosticsmentioning

confidence: 99%

Future for inertial-fusion energy in Europe: a roadmap

Batani,

Colaïtis,

Consoli

et al. 2023

High Pow Laser Sci Eng

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The recent achievement of fusion ignition with laser-driven technologies at the National Ignition Facility sets a historic accomplishment in fusion energy research. This accomplishment paves the way for using laser inertial fusion as a viable approach for future energy production. Europe has a unique opportunity to empower research in this field internationally, and the scientific community is eager to engage in this journey. We propose establishing a European programme on inertial-fusion energy with the mission to demonstrate laser-driven ignition in the direct-drive scheme and to develop pathway technologies for the commercial fusion reactor. The proposed roadmap is based on four complementary axes: (i) the physics of laser–plasma interaction and burning plasmas; (ii) high-energy high repetition rate laser technology; (iii) fusion reactor technology and materials; and (iv) reinforcement of the laser fusion community by international education and training programmes. We foresee collaboration with universities, research centres and industry and establishing joint activities with the private sector involved in laser fusion. This project aims to stimulate a broad range of high-profile industrial developments in laser, plasma and radiation technologies along with the expected high-level socio-economic impact.

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Section: Diagnosticsmentioning

confidence: 99%

Future for inertial-fusion energy in Europe: a roadmap

Batani,

Colaïtis,

Consoli

et al. 2023

High Pow Laser Sci Eng

View full text Add to dashboard Cite

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Absolute calibration of the spectral sensitivity of an x-ray streak camera over the 0.1–10 keV spectral range equipped with CsI photocathode

Hubert,

Boubault

2023

Review of Scientific Instruments

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In this paper, we report the absolute measurement of the spectral sensitivity of a bilamellar tube x-ray streak camera (XRSC) over the 0.1–10 keV range equipped with a CsI photocathode for Laser MégaJoule (LMJ) fusion experiments. This calibration of the XRSC is performed in static mode by using two multi-anode x-ray generators. Two silicon drift detectors (SDDs) previously calibrated at the Physikalisch–Technische–Bundesanstalt radiometric laboratory are used as secondary standards. Both x-ray generators work with a specific monochromator for radiometric measurements. In the sub-keV region, a 1 m-grazing incidence Rowland geometry monochromator specifically developed to handle LMJ's x-ray camera is used, whereas for higher energies (>2 keV), a double-crystal monochromator is employed. The absolute spectral sensitivity of the XRSC is obtained by comparing the CCD counts of the XRSC output with the output counts in x-ray lines recorded by the SDD. The results obtained below 1.2 keV are, to our knowledge, the first measurements of the spectral sensitivity of an XRSC in the soft x-ray range with a CsI photocathode. Comparison with a model describing the spectral dependence of the sensitivity of the XRSC revealed that measurements obtained in the sub-keV region are greater than expected, whereas they agree with the model above 4.5 keV. There may be several contributors to this behavior, including the grain morphology of the CsI layer and exposure to air.

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Design of transient front-end signal digitizer for x-ray detector in laser inertial confinement fusion facility

Hu,

Chen,

et al. 2024

Review of Scientific Instruments

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In a laser inertial confinement fusion (ICF) facility, an x-ray diode (XRD) detector is mainly used for precise measurement of black cavity radiation flow. The rapid rising time of the XRD detector and the intricate radiation environment of the ICF facility have posed new requirements for the bandwidth and anti-interference performance of signal digitization technologies. The standards are tough for the current recording system to meet. In this paper, based on the anti-interference of digital signals in the radiation field of the ICF facility, we have designed an XRD detector specific transient front-end signal digitizer (TFSD). The digitizer may be put together for consistent shielding in the radiation field since its size matches that of the XRD detector. The test results show that the TFSD has a higher signal input bandwidth than the existing recording method, considerably reduces the effect of pulse radiation field on signal recording, and significantly boosts the accuracy of recording and diagnosis.

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Soft x-ray power diagnostics for fusion experiments at NIF, Omega, and Z facilities

Cited by 7 publications

References 83 publications

Future for inertial-fusion energy in Europe: a roadmap

Future for inertial-fusion energy in Europe: a roadmap

Absolute calibration of the spectral sensitivity of an x-ray streak camera over the 0.1–10 keV spectral range equipped with CsI photocathode

Design of transient front-end signal digitizer for x-ray detector in laser inertial confinement fusion facility

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