Explanipedia

Intracerebellar extension of occipital scalp dermoid after initial resection: illustrative case Open

Rishishankar E. Suresh, Thomas Eckert, Kyle P. Stegmann, Timothy Webb, Brian F. Saway , et al. · 2025

BACKGROUND Dermoid cysts are benign ectodermal growths that commonly form at cranial sutures. Although benign, resection is often recommended to prevent intracranial extension as the cyst grows. The prognosis after resection is very good, …

Opposition Research: A novel platform on the Z Machine to study radiation flow in complex geometries Open

Jeffrey Fein, David I. Bernstein, J. L. Kline, S. M. Finnegan, Todd Urbatsch , et al. · 2024

Investigation of Power Flow in a Tapered Transmission Line Modification to HERMES -III using an Array of Dose- and Dose-rate Detectors in the Near- and Far-field Open

Timothy Renk, Timothy Webb, John Maynard, Mark D. Johnston, I. Paraschiv , et al. · 2024

Development and optimization of an x-pinch radiograph capability for the Z Machine Open

Hannah Hasson, M. R. Gómez, K. M. Chandler, Trevor Smith, Nathan Hines , et al. · 2024

Diverting current to drive an X-pinch for point projection radiography on the Z facility Open

Hannah Hasson, M. R. Gómez, K. M. Chandler, Christopher Jennings, Brian Hutsel , et al. · 2024

Compact Bremsstrahlung Diode Development on HERMES-III Open

Troy Powell, Mark Johnston, Timothy Webb, Garrett J. Marshall, Adam M. Darr , et al. · 2024

Testing of a compact Bremsstrahlung diode at the High Energy Radiation Megavolt Electron Source III (HERMES-III) was performed at Sandia National Laboratories in November, 2023. The compact diode described here is the first prototype diode…

Measuring x-ray spectra of flash radiographic sources [PowerPoint] Open

Amanda Gehring, Michelle Espy, T. J. Haines, Jacob Mendez, D.C. Moir , et al. · 2024

The x-ray spectra of flash radiographic sources are difficult to measure. The sources measured were Radiographic Integrated Test Stand-6 (370 rad at 1 m; 50 ns pulse) and Dual Axis Radiographic Hydrodynamic Test Facility (DARHT) (550 rad a…

Determining x-ray spectra of radiographic sources with a Compton spectrometer Open

Amanda Gehring, Michelle Espy, T. J. Haines, James Hunter, Manuel J. Manard , et al. · 2024

Controlling morphology and improving reproducibility of magnetized liner inertial fusion experiments Open

D. J. Ampleford, David Yager-Elorriaga, C. A. Jennings, Eric Harding, M. R. Gómez , et al. · 2024

X-ray imaging indicates magnetized liner inertial fusion (MagLIF) stagnation columns have a complicated quasi-helical structure with significant variations in x-ray brightness along the column. In this work, we describe MagLIF experiments …

Protracted respiratory failure in a case of global spinal syringomyelia and Chiari malformation following administration of diazepam: illustrative case Open

Luke Bauerle, Brandon Rogowski, Aakash Shingala, Habib Emil Rafka, Timothy Webb , et al. · 2023

BACKGROUND Syringomyelia is defined as dilation of the spinal cord’s central canal and is often precipitated by skull base herniation disorders. Although respiratory failure (RF) can be associated with skull base abnormalities due to brain…

Data from A Multicenter Phase II Study of Ganetespib Monotherapy in Patients with Genotypically Defined Advanced Non–Small Cell Lung Cancer Open

Mark A. Socinski, Jonathan W. Goldman, Iman El‐Hariry, Marianna Koczywas, Vojo Vukovic , et al. · 2023

Purpose: Ganetespib is a novel inhibitor of the heat shock protein 90 (Hsp90), a chaperone protein critical to tumor growth and proliferation. In this phase II study, we evaluated the activity and tolerability of ganetespib in previ…

Supplementary Methods from A Multicenter Phase II Study of Ganetespib Monotherapy in Patients with Genotypically Defined Advanced Non–Small Cell Lung Cancer Open

Mark A. Socinski, Jonathan W. Goldman, Iman El‐Hariry, Marianna Koczywas, Vojo Vukovic , et al. · 2023

PDF file - 91K

Data from A Multicenter Phase II Study of Ganetespib Monotherapy in Patients with Genotypically Defined Advanced Non–Small Cell Lung Cancer Open

Mark A. Socinski, Jonathan W. Goldman, Iman El‐Hariry, Marianna Koczywas, Vojo Vukovic , et al. · 2023

Purpose: Ganetespib is a novel inhibitor of the heat shock protein 90 (Hsp90), a chaperone protein critical to tumor growth and proliferation. In this phase II study, we evaluated the activity and tolerability of ganetespib in previ…

Supplementary Methods from A Multicenter Phase II Study of Ganetespib Monotherapy in Patients with Genotypically Defined Advanced Non–Small Cell Lung Cancer Open

Mark A. Socinski, Jonathan W. Goldman, Iman El‐Hariry, Marianna Koczywas, Vojo Vukovic , et al. · 2023

PDF file - 91K

Radiation, optical, power flow, and electrical diagnostics at the Z facility: Layout and techniques utilized to operate in the harsh environment Open

Timothy Webb, David E. Bliss, G. A. Chandler, D. H. Dolan, G. S. Dunham , et al. · 2023

The Z machine is a current driver producing up to 30 MA in 100 ns that utilizes a wide range of diagnostics to assess accelerator performance and target behavior conduct experiments that use the Z target as a source of radiation or high pr…

Magnetically Ablated Reconnection on Z (MARZ) collaboration. Open

Jack Hare, Rishabh Datta, S. V. Lebedev, J. P. Chittenden, Aidan Crilly , et al. · 2022

Parental Factors related to Development of Non-Syndromic Craniosynostosis in their Children Open

Timothy Webb, Patrick Karl O’Brien, Christine M. Orndahl, Jennifer Rhodes, Rene Olivares Navarrete , et al. · 2022

Purpose: There are case reports on potential parental risk factors regarding children with non-syndromic craniosynostosis implicating multiple possible pathologic contributions. A case control study was undertaken to elucidate any underlyi…

Radiatively-Cooled Magnetic Reconnection Experiments at the Z Pulsed-Power Facility. Open

Jack Hare, Aidan Crilly, S. N. Bland, Jack Halliday, D. R. Russell , et al. · 2022

Calibrations of Quartz (10-11) in both Laue and Bragg diffractions between 8-45 keV Using -focusing X-ray Sources in Air. Open

Patrick Lake, Guillaume Loisel, R. Presura, Timothy Webb, K. Moy , et al. · 2022

characteristic lines generated by a petawatt-driven Mo foil. This technique will be applied to shock and ramp-loaded single crystals on the Omega EP laser. Pulsed x-ray diffraction of shock- and ramp-compressed materials is an exciting new…

Characterization of self-magnetic pinch radiographic diode performance on RITS-6 at Sandia National Laboratories. II. Coupling between the inductive voltage adder and the SMP load Open

Timothy Renk, B. V. Oliver, Mark L. Kiefer, Timothy Webb, Joshua J. Leckbee , et al. · 2022

The self-magnetic pinch (SMP) diode is a type of radiographic diode used to generate an intense electron beam for radiographic applications. At Sandia National Laboratories, SMP was the diode load for the six-cavity radiographic integrated…

Characterization of self-magnetic pinch (SMP) radiographic diode performance on RITS-6 at Sandia National Laboratories. I. Diode dynamics, DC heating to extend radiation pulse Open

Timothy Renk, B. V. Oliver, Mark L. Kiefer, Timothy Webb, Joshua J. Leckbee , et al. · 2022

Radiographic diodes focus on an intense electron beam to a small spot size to minimize the source area of energetic photons for radiographic interrogation. The self-magnetic pinch (SMP) diode has been developed as such a source and operate…

Development of the MARZ platform (Magnetically Ablated Reconnection on Z) to study astrophysically relevant radiative magnetic reconnection in the laboratory. Open

C. E. Myers, Jack Hare, D. J. Ampleford, C. Aragón, J. P. Chittenden , et al. · 2021

Measuring Saturn's Electron Beam Energy Spectrum using Webb's Wedges Open

Benjamin Ulmen, Timothy Webb, Andrew McCourt, S.K. Coffey · 2021

It is very difficult to measure the voltage of the load on the Saturn accelerator. Time-resolved measurements such as vacuum voltmeters and V-dot monitors are impractical at best and completely change the pulsed power behavior at the load …

Characterization of Self-Magnetic Pinch (SMP) radiographic diode performance on RITS-6 at Sandia National Laboratories: 1) Diode Dynamics, DC Heating to extend Radiation Pulse Open

Timothy Renk, B. V. Oliver, Mark L. Kiefer, Timothy Webb, Joshua J. Leckbee , et al. · 2021

Radiographic diodes focus an intense electron beam to a small spot size to minimize the source area of energetic photons for radiographic interrogation. The self-magnetic pinch (SMP) diode has been developed as such a source and operated a…

Saturn Radiation Dose Environment Characterization Open

Benjamin Ulmen, K. Russell DePriest, Aaron Olson, Timothy Webb, Jarrod Douglas Edwards · 2021

To understand the environment where a time-resolved hard x-ray spectrometer (AXIOM) might be fielded, experiments and simulations were performed to analyze the radiation dose environment underneath the Saturn vacuum dome. Knowledge of this…

An X-ray Intensity Operations Monitor (AXIOM) (Final LDRD Project Report) Open

Benjamin Ulmen, Timothy Webb, G Radtke, Aaron Olson, K. Russell DePriest , et al. · 2021

The Saturn accelerator has historically lacked the capability to measure time-resolved spectra for its 3-ring bremsstrahlung x-ray source. This project aimed to create a spectrometer called AXIOM to provide this capability. The project had…

Developing an extended convolute post to drive an X-pinch for radiography at the Z facility. Open

M. R. Gómez, Clayton Myers, Maren Hatch, Brian Hutsel, Christopher Jennings , et al. · 2021

Design and First Tests of a Cathode Ion Detector at Z (CIDZ) to Measure Positive Ion Current at the Convolute on the Z Machine. Open

Timothy Webb, George Laity, Joseph C Hanson, C. Aragón, James W. Moore · 2021

Simulation and Modeling of Time-Resolved X-Ray Detector for the Saturn Accelerator Open

Xujiao Gao, Quinn Looker, Timothy Webb, K. Russell DePriest, Benjamin Ulmen · 2021

In this work, we present the technology-aided computer design (TCAD) device simulation and modeling of a silicon p-i-n diode for detecting time-dependent X-ray radiation. We show that the simulated forward and reverse breakdown current–vol…

A time-resolved, in-chamber x-ray pinhole imager for Z Open

Timothy Webb, D. J. Ampleford, Christopher R. Ball, M. R. Gómez, Patrick W. Lake , et al. · 2021

We have commissioned a new time-resolved, x-ray imaging diagnostic for the Z facility. The primary intended application is for diagnosing the stagnation behavior of Magnetized Liner Inertial Fusion (MagLIF) and similar targets. We have a v…

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