Characterization of diagnostic hole-closure in Z-pinch driven hohlraums

Baker, K. L.; Porter, J. L.; Ruggles, L. E.; Chandler, G. A.; Deeney, C.; Vargas, M.; Moats, A. R.; Struve, K.W.; Torres, J. A.; McGurn, J.; Simpson, W. W.; Fehl, D. L.; Jobe, D.; Chrien, R. E.; Matuska, W.; Idzorek, G. C.

doi:10.1063/1.873852

Cited by 7 publications

(4 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The peak temperature given by the silicon detector is 140 eV, about 2% higher than the TGS results without the PIN detectors at the C and O edges (137 eV) and 5% higher than the fits including these detectors (133 eV). Other measurements [32][33][34]38] for these hohlraums give a peak re-emission temperature of 140 eV obtained from bolometer [70] normalized filtered x-ray diode (XRD) measurements [71].…”

Section: Primary Hohlraum Energeticsmentioning

confidence: 99%

Progress in symmetric ICF capsule implosions and wire-arrayz-pinch source physics for double-pinch-driven hohlraums

Cuneo

Vesey

Bennett

et al. 2006

Plasma Phys. Control. Fusion

View full text Add to dashboard Cite

Over the last several years, rapid progress has been made evaluating the doublez-pinch indirect-drive, inertial confinement fusion (ICF) high-yield target concept (Hammer et al 1999 Phys. Plasmas 6 2129). We have demonstrated efficient coupling of radiation from two wire-array-driven primary hohlraums to a secondary hohlraum that is large enough to drive a high yield ICF capsule. The secondary hohlraum is irradiated from two sides by z-pinches to produce low odd-mode radiation asymmetry. This double-pinch source is driven from a single electrical power feed (Cuneo et al 2002 Phys. Rev. Lett. 88 215004) on the 20 MA Z accelerator. The double z-pinch has imploded ICF capsules with even-mode radiation symmetry of 3.1 ± 1.4% and to high capsule radial convergence ratios of 14-21 (

show abstract

Section: Primary Hohlraum Energeticsmentioning

confidence: 99%

Progress in symmetric ICF capsule implosions and wire-arrayz-pinch source physics for double-pinch-driven hohlraums

Cuneo

Vesey

Bennett

et al. 2006

Plasma Phys. Control. Fusion

View full text Add to dashboard Cite

show abstract

“…Equations (20), (39), and (45) suggest that, for given values of I, , n t , and i , the outer tank radius r tank could be decreased if the intermediate-store voltage V IS is increased.…”

Section: Scaling Of I With Other Accelerator Parametersmentioning

confidence: 99%

“…Z delivers 55 TW of electrical power to the accelerator's vacuum-insulator stack, and 19 MA to a 10-mm-initial-radius 10-mm-length pinch that implodes in 95 ns [33][34][35][36][37][38][39][40][41][42][43]. Such a pinch radiates 130 TW of x-ray power in a 12-ns pulse [33][34][35][36][37][38][39][40][41][42][43].…”

Section: Introductionmentioning

confidence: 99%

Architecture of petawatt-classz-pinch accelerators

Stygar

Cuneo

Headley³

et al. 2007

Phys. Rev. ST Accel. Beams

Self Cite

211

128

View full text Add to dashboard Cite

We have developed an accelerator architecture that can serve as the basis of the design of petawatt-class z-pinch drivers. The architecture has been applied to the design of two z-pinch accelerators, each of which can be contained within a 104-m-diameter cylindrical tank. One accelerator is driven by slow ( 1 s) Marx generators, which are a mature technology but which necessitate significant pulse compression to achieve the short pulses ( 1 s) required to drive z pinches. The other is powered by linear transformer drivers (LTDs), which are less mature but produce much shorter pulses than conventional Marxes. Consequently, an LTD-driven accelerator promises to be (at a given pinch current and implosion time) more efficient and reliable. The Marx-driven accelerator produces a peak electrical power of 500 TW and includes the following components: (i) 300 Marx generators that comprise a total of 1:8 10 4 capacitors, store 98 MJ, and erect to 5 MV; (ii) 600 water-dielectric triplate intermediate-store transmission lines, which also serve as pulse-forming lines; (iii) 600 5-MV laser-triggered gas switches; (iv) three monolithic radial-transmission-line impedance transformers, with triplate geometries and exponential impedance profiles; (v) a 6-level 5.5-m-diameter 15-MV vacuum insulator stack; (vi) six magnetically insulated vacuum transmission lines (MITLs); and (vii) a triple-post-hole vacuum convolute that adds the output currents of the six MITLs, and delivers the combined current to a z-pinch load. The accelerator delivers an effective peak current of 52 MA to a 10-mm-length z pinch that implodes in 95 ns, and 57 MA to a pinch that implodes in 120 ns. The LTD-driven accelerator includes monolithic radial transformers and a MITL system similar to those described above, but does not include intermediate-store transmission lines, multimegavolt gas switches, or a laser trigger system. Instead, this accelerator is driven by 210 LTD modules that include a total of 1 10 6 capacitors and 5 10 5 200-kV electrically triggered gas switches. The LTD accelerator stores 182 MJ and produces a peak electrical power of 1000 TW. The accelerator delivers an effective peak current of 68 MA to a pinch that implodes in 95 ns, and 75 MA to a pinch that implodes in 120 ns. Conceptually straightforward upgrades to these designs would deliver even higher pinch currents and faster implosions.

show abstract

“…The standard z-pinch-driven hohlraum fielded on the Z accelerator [53,61,73,76,102] can be modeled as described in Sections V and VI. For this system, As= 6 x 10-5m2, AW = 1.50 x 103 m2, AH = 5.65 x 10-5 m2, and V = 4.5 x 10-6 m3.…”

Section: Nif and Z-accelerator Hohlraumsmentioning

confidence: 99%