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Title: Petawatt pulsed-power accelerator

Abstract

A petawatt pulsed-power accelerator can be driven by various types of electrical-pulse generators, including conventional Marx generators and linear-transformer drivers. The pulsed-power accelerator can be configured to drive an electrical load from one- or two-sides. Various types of loads can be driven; for example, the accelerator can be used to drive a high-current z-pinch load. When driven by slow-pulse generators (e.g., conventional Marx generators), the accelerator comprises an oil section comprising at least one pulse-generator level having a plurality of pulse generators; a water section comprising a pulse-forming circuit for each pulse generator and a level of monolithic triplate radial-transmission-line impedance transformers, that have variable impedance profiles, for each pulse-generator level; and a vacuum section comprising triplate magnetically insulated transmission lines that feed an electrical load. When driven by LTD generators or other fast-pulse generators, the need for the pulse-forming circuits in the water section can be eliminated.

Inventors:
 [1];  [1];  [1];  [1]; ;  [1];  [1];  [1];  [1];  [2]; ;  [1]
  1. (Albuquerque, NM)
  2. (Sandia Park, NM)
Publication Date:
Research Org.:
Sandia Corporation (Albuquerque, NM)
Sponsoring Org.:
USDOE
OSTI Identifier:
1014480
Patent Number(s):
7,679,297
Application Number:
US Patent Application 11/499,548
Assignee:
Sandia Corporation (Albuquerque, NM) NNSASC
DOE Contract Number:
AC04-94AL85000
Resource Type:
Patent
Country of Publication:
United States
Language:
English

Citation Formats

Stygar, William A., Cuneo, Michael E., Headley, Daniel I., Ives, Harry C., Ives, legal representative, Berry Cottrell, Leeper, Ramon J., Mazarakis, Michael G., Olson, Craig L., Porter, John L., Wagoner, and Tim C. Petawatt pulsed-power accelerator. United States: N. p., 2010. Web.
Stygar, William A., Cuneo, Michael E., Headley, Daniel I., Ives, Harry C., Ives, legal representative, Berry Cottrell, Leeper, Ramon J., Mazarakis, Michael G., Olson, Craig L., Porter, John L., Wagoner, & Tim C. Petawatt pulsed-power accelerator. United States.
Stygar, William A., Cuneo, Michael E., Headley, Daniel I., Ives, Harry C., Ives, legal representative, Berry Cottrell, Leeper, Ramon J., Mazarakis, Michael G., Olson, Craig L., Porter, John L., Wagoner, and Tim C. 2010. "Petawatt pulsed-power accelerator". United States. doi:. https://www.osti.gov/servlets/purl/1014480.
@article{osti_1014480,
title = {Petawatt pulsed-power accelerator},
author = {Stygar, William A. and Cuneo, Michael E. and Headley, Daniel I. and Ives, Harry C. and Ives, legal representative and Berry Cottrell and Leeper, Ramon J. and Mazarakis, Michael G. and Olson, Craig L. and Porter, John L. and Wagoner and Tim C.},
abstractNote = {A petawatt pulsed-power accelerator can be driven by various types of electrical-pulse generators, including conventional Marx generators and linear-transformer drivers. The pulsed-power accelerator can be configured to drive an electrical load from one- or two-sides. Various types of loads can be driven; for example, the accelerator can be used to drive a high-current z-pinch load. When driven by slow-pulse generators (e.g., conventional Marx generators), the accelerator comprises an oil section comprising at least one pulse-generator level having a plurality of pulse generators; a water section comprising a pulse-forming circuit for each pulse generator and a level of monolithic triplate radial-transmission-line impedance transformers, that have variable impedance profiles, for each pulse-generator level; and a vacuum section comprising triplate magnetically insulated transmission lines that feed an electrical load. When driven by LTD generators or other fast-pulse generators, the need for the pulse-forming circuits in the water section can be eliminated.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 2010,
month = 3
}

Patent:

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  • Here, we have developed conceptual designs of two petawatt-class pulsed-power accelerators: Z 300 and Z 800. The designs are based on an accelerator architecture that is founded on two concepts: single-stage electrical-pulse compression and impedance matching [Phys. Rev. ST Accel. Beams 10, 030401 (2007)]. The prime power source of each machine consists of 90 linear-transformer-driver (LTD) modules. Each module comprises LTD cavities connected electrically in series, each of which is powered by 5-GW LTD bricks connected electrically in parallel. (A brick comprises a single switch and two capacitors in series.) Six water-insulated radial-transmission-line impedance transformers transport the power generated bymore » the modules to a six-level vacuum-insulator stack. The stack serves as the accelerator’s water-vacuum interface. The stack is connected to six conical outer magnetically insulated vacuum transmission lines (MITLs), which are joined in parallel at a 10-cm radius by a triple-post-hole vacuum convolute. The convolute sums the electrical currents at the outputs of the six outer MITLs, and delivers the combined current to a single short inner MITL. The inner MITL transmits the combined current to the accelerator’s physics-package load. Z 300 is 35 m in diameter and stores 48 MJ of electrical energy in its LTD capacitors. The accelerator generates 320 TW of electrical power at the output of the LTD system, and delivers 48 MA in 154 ns to a magnetized-liner inertial-fusion (MagLIF) target [Phys. Plasmas 17, 056303 (2010)]. The peak electrical power at the MagLIF target is 870 TW, which is the highest power throughout the accelerator. Power amplification is accomplished by the centrally located vacuum section, which serves as an intermediate inductive-energy-storage device. The principal goal of Z 300 is to achieve thermonuclear ignition; i.e., a fusion yield that exceeds the energy transmitted by the accelerator to the liner. 2D magnetohydrodynamic (MHD) simulations suggest Z 300 will deliver 4.3 MJ to the liner, and achieve a yield on the order of 18 MJ. Z 800 is 52 m in diameter and stores 130 MJ. This accelerator generates 890 TW at the output of its LTD system, and delivers 65 MA in 113 ns to a MagLIF target. The peak electrical power at the MagLIF liner is 2500 TW. The principal goal of Z 800 is to achieve high-yield thermonuclear fusion; i.e., a yield that exceeds the energy initially stored by the accelerator’s capacitors. 2D MHD simulations suggest Z 800 will deliver 8.0 MJ to the liner, and achieve a yield on the order of 440 MJ. Z 300 and Z 800, or variations of these accelerators, will allow the international high-energy-density-physics community to conduct advanced inertial-confinement-fusion, radiation-physics, material-physics, and laboratory-astrophysics experiments over heretofore-inaccessible parameter regimes.« less