Performance of the Cygnus X-ray Source

Smith, J. R.; Carlson, R. R.; Fulton, R. D.; Altes, R.; Carboni, V.; Chavez, J.; Corcoran, Patrick; Coulter, W.L.; Douglas, J.; Droemer, D.; Gibson, William A.; Helvin, T.; Henderson, David; Johnson, D.L.; Maenchen, J.E.; Mitton, Charlas V.; Molina, I.; Nishimoto, H.; Ormond, Eugene C.; Ortega, P.; Quicksilver, R.; Ridlon, R.N.; Rose, E.A.; Scholfield, D.W.; Smith, I.; Valerio, Antonio; White, Roger

doi:10.1063/1.1530819

Cited by 16 publications

(3 citation statements)

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“…Consistency of dose measurements is the most important metric of Source performance [1]. To this end we investigated fading which is the loss of signal in thermoluminescent materials over time.…”

Section: Calibrationmentioning

confidence: 99%

Lithium fluoride TLD dose quality

Ormond

Bozman

Cordova

et al. 2013

2013 Abstracts IEEE International Conference on Plasma Science (ICOPS)

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Lithium Fluoride (LiF) Thermoluminescent Dosimeters (TLD's) have been used extensively as a diagnostic in radiographic facilities. For over three years we have used precision-calibrated TLD's in our facility. Said facility consists of two radiographic sources, each with a dose rating of 4-Rad at 1 m. The calibration and fielding of TLD's will be examined for accuracy and long term stability. TLD's will be evaluated in single point measurements and multi-point arrays. Overlaying threechip TLD measurements will be compared to single chip TLD measurements. TLD results will also be compared to Pin Diodes for routine shot diagnosis and evaluation of shielding around the sources.

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Section: Calibrationmentioning

confidence: 99%

Lithium fluoride TLD dose quality

Ormond

Bozman

Cordova

et al. 2013

2013 Abstracts IEEE International Conference on Plasma Science (ICOPS)

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“…Cygnus reliability has always been a key operational element. The risk inherent in the execution of a SCE is that a high-stakes package is expended in a single event where there is no reprieve from catastrophic equipment failure [5].…”

Section: Diagnostic Importancementioning

confidence: 99%

Cygnus Diverter Switch Analysis

Ormond

Nelson

Cordova

et al. 2008

IEEE Trans. Plasma Sci.

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The Cygnus Dual Beam Radiographic Facility consists of two 2.25-MV, 60-kA, 50-ns x-ray sources fielded in an underground laboratory at the Nevada Test Site. The tests performed in this laboratory involve study of the dynamic properties of plutonium and are called subcritical experiments. From end-to-end, the Cygnus machines utilize the following components: Marx generator, water-filled pulse-forming line (PFL), waterfilled coaxial transmission line (WTL), 3-cell inductive voltage adder (IVA), and rod-pinch diode. The upstream WTL interface to the PFL is via a radial insulator with coaxial geometry. The downstream WTL terminates in a manifold where the center conductor splits into three lines which individually connect to each of the IVA cell inputs. There is an impedance mismatch at this juncture. It is a concern that a reflected pulse due to anomalous behavior in the IVA or diode might initiate breakdown upon arrival at the upstream PFL/WTL insulator. Therefore near the beginning of the WTL a radial diverter switch is installed to protect the insulator from over voltage and breakdown. The diverter has adjustable gap spacing, and an in-line aqueous-solution (sodium thiosulfate) resistor array for energy dissipation. There are capacitive voltage probes at both ends of the WTL and on the diverter switch. These voltage signals will be analyzed to determine diverter performance. Using this analysis the usefulness of the diverter switch will be evaluated.

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“…Such situations cause increased sensitivity to hazards (climatic, economic, etc.) and yield stagnation [4].…”

Section: Introductionmentioning

confidence: 98%

Mitigating climate impact through stabilized fertilizers: enhancing agricultural sustainability

Arsanov,

Tokaeva,

Bamatov

2024

E3S Web Conf.

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The recognition by the global scientific community that anthropogenic activities are responsible for the negative impact of climate change has led to the emergence of numerous theses and projects aimed at mitigating humanity's adverse effects on the environment. The biosphere's inherent characteristic of movement plays a significant role in the dispersion of pollutants, rendering the notion of a national ecosystem obsolete. In light of this understanding, this project focuses on the reduction of negative climate factors through the application of stabilized fertilizers with controlled nutrient release. The primary objective is to minimize the detrimental consequences of human activities on the Earth by implementing sustainable strategies. Conventional fertilizers often result in rapid nutrient release, leading to inefficiencies and environmental repercussions. This approach optimizes nutrient utilization, mitigates nutrient losses through leaching and volatilization, and reduces environmental contamination. Slow-release fertilizers, coated products, and nutrient-specific delivery systems are potential avenues for achieving this goal. Furthermore, by reducing nutrient runoff, these fertilizers contribute to preserving water quality and safeguarding aquatic ecosystems.

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Performance of the Cygnus X-ray Source

Cited by 16 publications

References 0 publications

Lithium fluoride TLD dose quality

Lithium fluoride TLD dose quality

Cygnus Diverter Switch Analysis

Mitigating climate impact through stabilized fertilizers: enhancing agricultural sustainability

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