This work was performed under the auspices of the National Nuclear Security Administration U.S. Department of Energy by UCLLNL under Contract W-7405-Eng-48 P8584 Clean Energy: Humankind’s Challenge
NIF-0205-10331 P8434 15EIM/sb Clean Energy: Humankind’s 30 Challenge Global factors 25 • Population increase • Developing countries • Resource depletion 20 • Climate change
15
Developing Asia 10
Middle East, Africa, and Former Soviet Union 5 G i g a t o n s f O l E q u v e Developed countries
0 2000 2010 2020 2030 2040 2050
NIF-0205-10331-L1 P843748 15EIM/sb
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NIF-0205-10343 P8481 NIF-1104-09783 P7481 17EIM/tr NIF-0105-10118 P8134 21EIM/tr NIF-1104-09784 P7488 17EIM/tr Laser Bay 2 Build Laser Bay 2 Flyover 192 beam, 1.8 MJ, laser organized into “bays,” “clusters”, “bundles”, and “quads” The National Ignition Facility
Bundle End view of NIF Upper Cluster 4 Cluster 3 Cluster 2 Cluster 1 quad
Lower quad
1 Top view of target 2 chamber (upper quads)
3 4 Cluster 4 Cluster 1
“Quads” are the basic building blocks of a Cluster 2 NIF experiment, 4 beams with the same Cluster 3 pulse shape and time delay
NIF-0101-00068r1 P5443
NIF 1ω laser exceeds power and energy requirements for entire operational parameter space The National Ignition Facility B31BQ 1ω Performance Fluence (J/cm2) 0 5 10 15 20 8
7
0.2 ns 6 1 ns 2 ns 4 Intensity (GW/cm 5 3.5 ns
5 ns 4 3
3 2
10 ns 2 )
Power (TW per beam) 2 >20 ns 1 1
0 0 5 10 15 20 25 30 Energy (kJ per beam)
NIF-0504-08644r1 P7280 12EIM/ld 25EIM/dj Design goals for 1ω energy and power exceeded with high overall beam quality The National Ignition Facility
2.5 18 Fluence Distributions 2.0 26 kJ, 23 ns Measured Over Central 30 cm 9 7 1.5
Avg 0 6 26 kJ F/F 1.0 σ = 6.5% 5 –9 0.5
4 0 –18
2.5 18 3 6.2 TW σ = 14.6% 6.2 TW, 200 ps 2.0 2
9 Relative Occurrence
1.5 1
Avg 0
F/F 1.0 0 0.5 1.0 1.5 2.0 –9 0.5 F/FAvg
0 –18 –18–90 9 18 Scale (cm)
NIF-0803-07147 P6001 09EM/cb 2ω and 3ω performance The National Ignition Facility
2ω & 3ω Performance 4.50
4.00
3.50
3.00 Haan 3ω ignition pulse
2.50
2.00
1.50
Power (TW per beam) 1.00
0.50
0.00 0 2 4 6 8 10 12
Energy (kJ per beam)
NIF-0504-08633-r1 P7296 12EIM/ld 25EIM/dj 2 and 3 beamline energies are highest ever achieved The National Ignition Facility
11.4 kJ 2 , 5 ns 10.4 kJ 3 , 3.5 ns
18 18
9 9
0 0
–9 –9
Contrast = 0.13 Contrast = 0.17
–18 –18 –18 –9 0 9 18 –18 –9 0 9 18 Scale (cm) Scale (cm)
0 0.5 1.0 1.5 2.0 2.5 0 0.5 1.0 1.5 2.0 2.5
F/FAvg F/FAvg
Each beam of NIF is 10x energy of other operational lasers world wide
NIF-0604-08830r2 P8232 26EIM/dj Shot cooling periods as short as 1.5 hours have been demonstrated on NIF The National Ignition Facility
CFD Calculations Fit our Measured Focal Shot Cooling Periods are Calculated to Spot Size Data even at 1.5h Shot Rate only Marginally Increase Focal Spot Size
280 265 m) m) µ NIF requirement limit µ 255 252 Average 1.5 hour NEL data NIF requirement limit Linear model prediction φ 230 ( 0=11.4) 239
205 226
180 213 far-field 80% diameter ( far-field 80% diameter far-field 80% diameter ( ω ω 1
155 1 200 1234567 12345678 Shot number in sequence Shot period (hours)
Short shot cycles appear practical even for the most demanding users
NIF-0504-08643r1 P7295 14EIM/ld 17EIM/dj Adaptive wavefront correction of Beamlet produced ~2 diffraction limited focal spot
39 actuator deformable mirror corrects static and dynamic pump induced wavefront distortion
Without pump-induced Radial integral of 1 far precorrection With full correction field spot distribution
–20 –20 1.0
–10 –10 0.8
0.6 0 0
0.4 V - a x i s ( r d ) V - a x i s ( r d ) 10 10 calculated 0.2 measured E n c i r l e d g y f a t o 20 20 0 –20 –10 0 10 20 –20 –10 0 10 20 0 10 20 30 40 Divergence angle ( rad) H-axis ( rad) H-axis ( rad)
0 0.25 0.50 0.75 1.00 0 0.25 0.50 0.75 1.00
70-50-0595-1415A-EIM P5466 0116/EM/pmc Position, timing accuracy, and stability The National Ignition Facility
Stability Scatter Plot (8 hours) Beam timing adjusted to within 6 ps (rms)
100 2 ns sweep window MS re 1σ R quir 80 µm em 0 en 10 t 60
40
20
0.0 200 ps laser pulse -20
-40 315 317 316 315 317 316
Y location (microns) 318 318 -60 1 t 0 en 0µ m -80 m σ ire 1 RMS requ -100 -100 -80 -60 -40 -20 0.0 20 40 60 80 100 X location (microns)
NIF-0105-10150r1 P8587 31EIM/cld NIF Project Completion Criteria: Laser Performance The National Ignition Facility
96 Beam Single Bundle Current Specification Performance Performance Beamline Status Pulse Energy 500 kJ (1000 kJ) 75 kJ (83 kJ) Peak Power 200 TW (400 TW) 21 TW (32 TW) Wavelength .35 µm (.35 & .53 µm) .35 µm (.35 & .53 µm) Positioning Accuracy 100 µm RMS (30 µm) 100 µm RMS (30 µm) Pulse Duration 20 ns (0.2 – 23 ns) 20 ns (0.2 – 23 ns) Pulse Dynamic Range >25:1 (108:1) 50:1 (108:1) Pulse Spot Size 600 µm (140 µm – 750 µm) 600 µm (140 – 750 µm) Pre-pulse power <108 W/cm2 (<<108 W/cm2) <4 × 106 W/cm2 (<<4 × 106) Cycle Time 8 hours max between 8 hours max between full system shots (<4 h) full system shots (<4 h)
On a beamline basis, NIF has demonstrated operation at: — All Project Completion Criteria — Long-term Functional Requirements and Primary Criteria NIF has fired 384 full system shots
NIF-0604-08874r4 P7611 10CH/cld Target Chamber in Target Bay
NNIF-0105-10163IF-0105-10163 P8195 31EIM/dj31EIM/dj Target Bay
NIF-0803-07112-L1 P8207 31EIM/dj NIF-0501-02172 X2235 SystemsSystems EngineerEngineer
TaTargetrget AlignmentAlignment SSensorensor PositionerPositioner
NIF-0703-07087NIF-0703-07087 P5924P5924 DIM – VISAR CCRS DIM – GXD
TASPOS DIM – FODI
CCRS
TARPOS DIM – SXD
17’ 6’’ Elevation (Level 2)
NIF-0502-04969 F0028 09GD/tr 513GD/dj The first four NIF beamlines have been commissioned to the center of the target chamber The National Ignition Facility
End-to-end functionality of all major subsystems demonstrated
Diagnostic Insertion Manipulator
TTargetarget AAlignmentlignment SensorSensor PPositionerositioner
Q31BQ31B TargetTarget PPositionerositioner Main Laser
FFinalinal OOpticsptics aandnd X-ray Final TargetTarget SSystemsystems Imager Optics Beam Transport
NIF-0503-07003 P5896 02EIM/tr We are developing NIF into the premier facility for understanding matter at extreme conditions The National Ignition Facility
P02496-pts-u-026 O0060 A series of 2D and 3D jet features were measured to benchmark ASCI radiation hydro codes The National Ignition Facility 2D Features
15 ns 21 ns 21 ns Time series measure Duplicate shots measure hydrodynamic evolution repeatable hydrodynamic evolution 3D Features
Orthogonal 15 ns Asymmetric 15 ns Asymmetric 21 ns
NIF-0904-09522r1 P8585 30EIM/tr Gated x-ray imaging measures the beam transport through the target The National Ignition Facility
LASNEX Calculation for 3.5 keV X-rays
t = 1.5 ns t = 2.5 ns t = 3.5 ns CO2; ne/ncr = 0.06
Incoming Laser beam
Gated X-ray imaging (3.5 keV filtering)
t = 0 ns t = 1.5 ns t = 2.5 ns t = 3.5 ns 2
0 x (mm) -2
-2 0 2 -202 -202 -202 z (mm) z (mm) z (mm) z (mm)
We observe approximate agreement between the experimental data and the LASNEX calculations NIF-0904-09571 P7430 30EIM/mcm NIF is ready to deliver the next generation of High Energy Density Physics Experimental Capability The National Ignition Facility
High Energy Density Physics Fusion Ignition Basic Science
NIF-0404-08351 P6835 27EIM/mcm Is NIF a precursor to an IFE plant? The National Ignition Facility
NIF
Fusion Reactor
Repetition frequency 10–4 Hz Electrical efficiency 0.5%
Repetition frequency 10 Hz Electrical efficiency 10%
NIF-0105-10159-r1 P8482 31EIM/cld NIF is about 5 orders of magnitude more energetic than its earliest predecessor The National Ignition Facility Janus 100J IR Remaining Challenge: Shiva 10KJ IR — Rep rate — Efficiency
Nova 30KJ UV
NIF 1.8MJ UV
NIF-0105-10166-L2 P8240632 15EIM/dj The Mercury Laser is the first step toward building a MW, 10 Hz class of IFE lasers The National Ignition Facility Mercury Mercury Goals: IRE (NIF bundle) – Energy: 100 J – Efficiency: 10% – Repetition rate: 10 Hz ETF 100 J IR – Pulse length: 3-10 ns – Wavelength: 0.53/0.25 µm – Bandwidth: 150 GHz 1ω – Beam quality: 5 xDL 20 kJ UV IFE
2 MJ UV
NIF-0305-10498 P8570P8586 18CB/cls Mercury Laser at LLNL
100
10 55 J for > 8.5 hours 1
0.1
0.01 Output Energy (J) ω 1 1E-3 0204060 80 100 120 Number of Shots (x 103)
NIF-0305-10505NIF-0305-10505 18CB/cls18CB/cls Future IFE solid state laser The National Ignition Facility