Search Results - "WEBB, Timothy J"

Simulation and Modeling of Time-Resolved X-Ray Detector for the Saturn Accelerator by Gao, Xujiao, Looker, Quinn, Webb, Timothy J., Depriest, K. Russell, Ulmen, Benjamin

“…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…”
Get full text

A stochastic approach to quantifying the blur with uncertainty estimation for high-energy X-ray imaging systems by Fowler, Michael J., Howard, Marylesa, Luttman, Aaron, Mitchell, Stephen E., Webb, Timothy J.

“…One of the primary causes of blur in a high-energy X-ray imaging system is the shape and extent of the radiation source, or 'spot'. It is important to be able…”
Get full text

Overview of Self-Magnetically Pinched-Diode Investigations on RITS-6 by Hahn, Kelly D, Bruner, Nichelle, Johnston, Mark D, Oliver, Bryan V, Webb, Timothy J, Welch, Dale R, Cordova, Steve R, Crotch, Ian, Gignac, Raymond E, Leckbee, Josh J, Molina, Isidro, Portillo, Salvador, Threadgold, Jim R, Ziska, Derek

“…The electron-beam-driven self-magnetically pinched diode is a candidate for future flash X-ray radiographic sources. As presently fielded on Sandia…”
Get full text

Shot reproducibility of the self-magnetic-pinch diode at 4.5 MV by Bennett, Nichelle, Crain, M. Dale, Droemer, Darryl W., Gignac, Raymond E., Lare, Greg, Molina, Isidro, Obregon, Robert, Smith, Chase C., Wilkins, Frank L., Welch, Dale R., Cordova, Steve, Gallegos, Manuel L., Johnston, Mark D., Kiefer, Mark L., Leckbee, Joshua J., Mazarakis, Michael G., Nielsen, Dan, Renk, Timothy J., Romero, Tobias, Webb, Timothy J., Ziska, Derek

“…In experiments conducted at Sandia National Laboratories’ RITS-6 accelerator, the self-magnetic-pinch diode exhibits significant shot-to-shot variability…”
Get full text

Energy and Current Density Measurements of RITS-6 Large-Area Diode Electron Beam by Webb, Timothy J, Hahn, Kelly D, Johnston, Mark D, Oliver, Bryan V, Welch, Dale R

“…The depth-dose measurements of Radiographic Integrated Test Stand-6 large-area diode electron beam operating at approximately 10-MV peak voltage suggest a 10 ±…”
Get full text

Back-streaming ion beam measurements in a self magnetic pinch (SMP) electron diode by Mazarakis, Michael G., Cordova, Steven R., Johnston, Mark D., Kiefer, Mark L., Leckbee, Joshua J., Nielsen, Dan S., Oliver, Bryan V., Renk, Timothy J., Webb, Timothy J., Ziska, Derek, Bennett, Nichelle, Droemer, Darryl W., Cignac, Raymond E., Obregon, Robert J., Smith, Chase C., Wilkins, Frank L., Welch, Dale R., Romero, Tobias M.

“…Summary form only given. A self-magnetic pinch diode (SMP) is presently the electron diode of choice for high energy flash x-ray radiography utilizing pulsed…”
Get full text

In-situ anode heating and plasma glow discharge cleaning and its effects on atomic constituents in the A-K gap in Self-Magnetic Pinch (SMP) experiments by Simpson, Sean C., Johnston, Mark D., Mazarakis, Michael G., Renk, Timothy J., Tang, Ricky, Webb, Timothy J., Nielsen, Dan S., Ziska, Derek R., Kiefer, Mark L., Patel, Sonal, Zier, Jacob C., Weber, Bruce V.

“…Summary form only given. The RITS-6 inductive voltage adder (IVA) accelerator (3.5-8.5 MeV) at Sandia National Laboratories produces highpower (TW) focused…”
Get full text

Contribution of the backstreaming ions to the Self-Magnetic pinch (SMP) diode current by Mazarakis, Michael G., Cuneo, Michael E., Fournier, Sean D., Johnston, Mark D., Kiefer, Mark L., Leckbee, Joshua J., Nielsen, Dan S., Oliver, Bryan V., Simpson, Sean, Renk, Timothy J., Webb, Timothy J., Ziska, Derek, Bennett, Nichelle, Droemer, Darryl W., Cignac, Raymond E., Obregon, Robert J., Smith, Chase C., Wilkins, Frank L., Welch, Dale R.

“…Summary form only given. The results presented here were obtained with an SMP diode mounted at the front high voltage end of the RITS accelerator. RITS is a…”
Get full text

Spectral characteristics of the SMP diode for radiographic applications by Webb, Timothy J., Kiefer, Mark L., Leckbee, Joshua J., Johnston, Mark D., Welch, Dale R.

“…The self-magnetic pinch (SMP) diode is an intense radiographic source fielded on the Radiographic Integrated Test Stand (RITS-6) accelerator at Sandia National…”
Get full text

High-Impedance Coaxial Autoaccelerator by Webb, T.J.

“…Experimentation of a single-stage, 100 coaxial autoaccelerator was carried out on a 3 MeV, 9 kA, and solid (non-annular) electron beam and achieved a maximum…”
Get full text

Simulations of Dynamic Laser/Plasma X-Ray Production by Miller, C. L., Welch, D. R., Rose, D. V., Campbell, R. B., Oliver, B. V., Webb, T. J., Flicker, D. G.

“…Intense laser beams focused onto thin high-atomic-number targets can generate short intense bursts of MeV X-rays from a small area of the target. Such systems…”
Get full text

Impedance behavior in the self-magnetic pinch (SMP) diode on the RITS-6 accelerator by Renk, Timothy J., Johnston, Mark D., Leckbee, Josh J., Webb, Timothy J., Mazarakis, Michael G., Kiefer, Mark L., Bennett, Nichelle

“…Summary form only given. The RITS-6 accelerator (4-7.5 MeV) at Sandia National Laboratories produces high-power (TW) focused electron beams (<; 3mm diameter)…”
Get full text

Radiographic characteristics of the self-magnetic pinch diode at RITS-6 and URSA-Minor by Webb, Timothy J., Leckbee, Joshua J., Oliver, Bryan V.

“…Summary form only given. The self-magnetic pinch (SMP) diode 1 is an intense flash x-ray radiographic source being developed at Sandia National Laboratories…”
Get full text

Overview of Self-Magnetically Pinched-Diode Investigations on RITS-6: SPECIAL ISSUE ON PULSED POWER SCIENCE AND TECHNOLOGY by HAHN, Kelly D, BRUNER, Nichelle, MOLINA, Isidro, PORTILLO, Salvador, THREADGOLD, Jim R, ZISKA, Derek, JOHNSTON, Mark D, OLIVER, Bryan V, WEBB, Timothy J, WELCH, Dale R, CORDOVA, Steve R, CROTCH, Ian, GIGNAC, Raymond E, LECKBEE, Josh J

Get full text

Positive-polarity rod-pinch experiments on the RITS-6 accelerator by Leckbee, Joshua J., Johnston, Mark D., Oliver, Bryan V., Webb, Timothy J., Smith, Ian D., Bailey, Vernon L., Whitney, Brandon A., Corcoran, Patrick A., Bennett, Nichelle

“…RITS-6 is an inductive voltage adder (IVA) based accelerator used forradiographic diode research and development 1 . Experiments have been conducted with…”
Get full text

Plasma dynamics in the self-magnetic-pinch diode by Bennett, Nichelle, Crane, Marlon D., Smith, Chase C., Droemer, Darryl W., Welch, Dale R., Johnston, Mark D., Leckbee, Joshua J., Mazarakis, Michael G., Renk, Timothy J., Webb, Timothy J., Keifer, Mark L.

“…The self-magnetic-pinch (SMP) diode 1,2 is being developed as a source for flash x-ray radiography. The high electric field stresses applied to this diode and…”
Get full text

Direct measurement of the bi-polar ion current and anode-cathode (A-K) voltage in a self-magnetic pinch (SMP) diode by Mazarakis, Michael G., Cordova, Steven R., Cuneo, Michael E., Johnston, Mark D., Kiefer, Mark L., Lake, Patrick W., Leckbee, Joshua J., Nielsen, Dan S., Oliver, Bryan V., Renk, Timothy J., Sceiford, Matthew, Simpson, Sean C., Webb, Timothy J., Ziska, Derek, Bennett, Nichelle, Crain, Marlon D., Droemer, Darryl W., Cignac, Raymond E., Lare, Gregory A., Molina, Isidro, Obregon, Robert J., Romero, Tobias M., Smith, Chase C., Wilkins, Frank L., Welch, Dale R.

“…Summary form only given. A self-magnetic pinch diode is currently under extensive study in the Sandia Laboratory advanced radiographic development facility…”
Get full text