Angular sensitivity of gated microchannel plate framing cameras

Landen, O. L.; Lobban, A.; Tutt, T.E.; Bell, P. M.; Costa, R.; Hargrove, D.; Ze, F.

doi:10.1063/1.1318256

Cited by 36 publications

(18 citation statements)

References 15 publications

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“…Our analysis closely follows that of Landen et al (Ref. [14]), which has demonstrated good agreement with experimental observations.…”

Section: Instrument Designsupporting

confidence: 78%

“…While the inclusion of film response, filter transmission, and crystal reflectivities [6] are straight-forward, an accurate model of the MCP response is more complicated. The detection of x-rays by MCPs has been studied both theoretically and experimentally [12][13][14]. Our analysis closely follows that of Landen et al (Ref.…”

Section: Instrument Designsupporting

confidence: 76%

“…1 and experimentally verified in Ref. [14], motivated the choice of detector orientation to minimize the average x-ray incidence angle. For elliptical designs, geometric considerations play an important role in the instrument response.…”

Section: Instrument Designmentioning

confidence: 99%

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Broadband high-resolution elliptical crystal x-ray spectrometer for high energy density physics experiments

Anderson

Heeter

Booth

et al. 2006

Review of Scientific Instruments

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Spectroscopic investigation of high temperature laser produced plasmas in general, and x-ray opacity experiments in particular, often requires instruments with both a broad coverage of x-ray energies and high spectral, spatial, and temporal resolution. We analyze the design, model the response, and report the commissioning of a spectrometer using elliptical crystals in conjunction with a large format, gated microchannel plate detector. Measurements taken with this instrument at the JANUS laser facilities demonstrate the designed spectral range of 0.24 to 5.8 keV, and spectral resolution E/ΔE > 500, resulting in 2 to 3 times more spectral data than achieved by previous spectrometer designs. The observed 100 picosecond temporal resolution and 35 μm spatial resolution are consistent with the requirements of high energy density opacity experiments.

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“…Our analysis closely follows that of Landen et al (Ref. [14]), which has demonstrated good agreement with experimental observations.…”

Section: Instrument Designsupporting

confidence: 78%

Section: Instrument Designsupporting

confidence: 76%

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Broadband high-resolution elliptical crystal x-ray spectrometer for high energy density physics experiments

Anderson

Heeter

Booth

et al. 2006

Review of Scientific Instruments

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“…The PMT has an MCP, which are known for their sensitivity to X-rays [28][29][30]. So, the PMT was capable of providing a measurement of the hard X-rays and -rays generated in the diode, in addition to the visible photons on the cathode face.…”

Section: A Pmt Measurementsmentioning

confidence: 99%

Characterizing the photon spectrum in the DARHT Axis-I diode

Coleman¹,

Johnson²,

McCuistian³

et al. 2014

2014 IEEE 41st International Conference on Plasma Sciences (ICOPS) Held With 2014 IEEE International Conference on High-Power P

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An array of photon diagnostics have been deployed on a high power relativistic electron beam diode. Surface flashover of a carbon fiber velvet cathode generates a discharge from which electrons are accelerated through a 17.8 cm diode. This discharge is assumed to be a hydrocarbon mixture. A small portion of the off energy electrons (1-3 MeV) accelerated during the rise and fall of the 80 ns FWHM pulse impact the beam pipe and generate a Bremsstrahlung spectrum of 0.1-3 MeV photons. The principal objective of these experiments is to quantify the dynamics of the hard X-ray and -ray flux generated in the diode region, in addition to quantifying dynamics of the visible photons generated, and the ion species of the surface discharge on the velvet cathode. A qualitative comparison of different diagnostic results are presented, which include time resolved measurements with X-ray PIN diodes, a PMT, and CCD images. In addition initial visible spectroscopy measurements will also be presented.

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“…Time resolution of 80 ps will be required for imaging of pellet implosions without motion blur, with coverage over a 4 ns window and diagnostic trigger jitter with respect to pinch stagnation of ± 1 ns or less. Use of gated MCPs [32][33][34][35] in a close-in geometry will require careful collimation and heavy shielding from bremsstrahlung and EMP background. Debris mitigation will be a particularly difficult problem for on-axis reentrant diagnostics, requiring a combination of imaging apertures (in this case, pinholes), baffles, and fast valves for protection of the imaging plane components.…”

Section: Ii4 High Spatial Resolution X-ray Pinhole Camerasmentioning

confidence: 99%

Diagnostics development plan for ZR.

Hanson¹

2003

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The Z Refurbishment (ZR) Project is a program to upgrade the Z machine at SNL with modern durable pulsed power technology, providing additional shot capacity and improved reliability as well as advanced capabilities for both pulsed x-ray production and high pressure generation. The development of enhanced diagnostic capabilities is an essential requirement for ZR to meet critical mission needs. This report presents a comprehensive plan for diagnostic instrument and infrastructure development for the first few years of ZR operation. The focus of the plan is on: (1) developing diagnostic instruments with high spatial and temporal resolution, capable of low noise operation and survival in the severe EMP, bremsstrahlung, and blast environments of ZR; and (2) providing diagnostic infrastructure improvements, including reduced diagnostic trigger signal jitter, more and flexible diagnostic line-of-sight access, and the capability for efficient exchange of diagnostics with other laboratories. This diagnostic plan is the first step in an extended process to provide enhanced diagnostic capabilities for ZR to meet the diverse programmatic needs of a broad range of defense, energy, and general science programs of an international user community into the next decade. ZR Diagnostics Development Plan ________________________________________________________________________ 4 AcknowledgementsThe author would like to thank

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Angular sensitivity of gated microchannel plate framing cameras

Cited by 36 publications

References 15 publications

Broadband high-resolution elliptical crystal x-ray spectrometer for high energy density physics experiments

Broadband high-resolution elliptical crystal x-ray spectrometer for high energy density physics experiments

Characterizing the photon spectrum in the DARHT Axis-I diode

Diagnostics development plan for ZR.

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