Zobrazeno 1 - 10
of 65
pro vyhledávání: '"Sean K. Coffey"'
Autor:
G. Archuleta, E. Gutierrez, B. Smart, D. Gutierrez, Sean K. Coffey, Chris Grabowski, B. Hughes, I. Owens, G. Tilley, K. Tunell, J. A. Lott, A. Shay, R. Natal, J. Santillanes, N. Joseph
Publikováno v:
IEEE Transactions on Plasma Science. 48:3289-3304
The HERMES III accelerator is an 18–20-MeV linear induction accelerator constructed at Sandia National Laboratories in the late 1980s and which continues operation to this day. As part of recent modernization efforts, the laser triggering system on
Autor:
Chris Grabowski, Sean K. Coffey, Ken Struve, Ben A. Ulmen, Ben Hughes, Andrew Biller, Israel Owens, Debra Kirschner, N. Joseph
Publikováno v:
Scientific Reports
Scientific Reports, Vol 11, Iss 1, Pp 1-7 (2021)
Scientific Reports, Vol 11, Iss 1, Pp 1-7 (2021)
We describe a direct electro-optical approach to measuring a strong 118 MV/m narrow pulse width (~33 ns) electric field in the magnetically insulated transmission line (MITL) of a pulsed power accelerator. To date, this is the highest direct external
Publikováno v:
2020 IEEE International Conference on Plasma Science (ICOPS).
Autor:
G. A. Wurden, Sean K. Coffey, Matthew T. Domonkos, James H. Degnan, Jerald V. Parker, R. Delaney, Thomas P. Intrator, Alan Lynn, Edward L. Ruden, Wayne Sommars, Chris Grabowski, J. Frank Camacho, Thomas Weber, J. McCullough
Publikováno v:
IEEE Transactions on Plasma Science. 44:1997-2012
The field-reversed configuration heating experiment (FRCHX) was designed to form closed-field-line magnetized target plasmas for magnetoinertial fusion and other high energy density plasma research. These plasmas are in a field-reversed configuration
Autor:
Benjamin A. Ulmen, K. Rainwater, I. Owens, Chris Grabowski, N. Joseph, Kenneth W. Struve, Sean K. Coffey, D. Kirschner
Publikováno v:
2019 IEEE Pulsed Power & Plasma Science (PPPS).
The electric field strength between the cathode and anode (i.e., the voltage) of a pulsed power machine is one of the most important operating parameters of the device. However, to date, accurate and precise voltage measurements on these high energy
Autor:
J. Sedillo, J. A. Lott, D. Gutierrez, Chris Grabowski, R. Natal, B. Hughes, N. Joseph, Sean K. Coffey, I. Owens, G. Tilley
Publikováno v:
2018 IEEE International Power Modulator and High Voltage Conference (IPMHVC).
The Hermes III accelerator is a 20-MV linear induction accelerator that has been in operation at Sandia National Laboratories since the late 1980’s. Energy is initially stored in the accelerator in ten Marx banks that are discharged into twenty int
Autor:
Sean K. Coffey, J. McCullough, Sherry D. Frese, A. Lerma, Matthew T. Domonkos, Thomas Montoya, Chris E. Roth, Norman F. Roderick, Paul E. Adamson, David Amdahl, P. R. Robinson, J.V. Parker, Alan G. Lynn, Diana Grace Schroen, Rufus Cooksey, Michael H. Frese, Dale Ralph, Brian Blasy, James H. Degnan, T.C. Grabowski, Frederick Mark Lehr, W. White, Edward L. Ruden, D.G. Gale, M. Kostora, Peter J. Turchi, Wayne Sommars, J. Frank Camacho, Vladimir Makhin
Publikováno v:
IEEE Transactions on Plasma Science. 43:374-388
In 1991, Turchi et al. reported evidence for a 2000 km/s aluminum plasma that originated from the upstream boundary of a wire array armature in a plasma flow switch (PFS). The 2008 article by Turchi et al. posits that if such high $Z$ plasma could in
Autor:
Adam Circle, Victor-Harper-Slaboszewicz, N. Joseph, Barbara Lewis, Sean K. Coffey, Chris Grabowski, Benjamin A. Ulmen
Publikováno v:
2017 IEEE 21st International Conference on Pulsed Power (PPC).
This paper describes the software changes made to the data processing and display system for HERMES III accelerator at the Simulation Technology Laboratory (STL) at Sandia National Laboratories, New Mexico. The HERMES III accelerator is a gamma ray s
Publikováno v:
2017 IEEE 21st International Conference on Pulsed Power (PPC).
This paper describes the hardware changes made to the triggering system of the HERMES III accelerator at Sandia National Laboratories, New Mexico. The HERMES III accelerator is a gamma ray simulator producing 100 kRad dose per shot with a full width
Publikováno v:
2017 IEEE 21st International Conference on Pulsed Power (PPC).
The Hermes III accelerator at Sandia National Laboratories is a 20-cavity multi-stage linear induction voltage accelerator typically producing a 20-MV, 40-ns, 600-kA output pulse. Energy is initially stored in Marx banks that are each discharged into