01/20/2009 Wei, Sawada, Macphee, Mackinnon 1

• Revised target lists– Focus on shock heating and e-transport in WDM targets– Add electron transport in shocked Au targets (~2 day shots)– Add some proton hemisphere + foil targets for proton heating shots (~1 day shots)– Electron source targets postponed to April (2 weeks)

• Targets requested from LLNL ( Walter has all the information)• Al target supports requested from GA (total 70 supports)• Beams and diagnostics layout defined• Hydro simulations have been performed for shock velocity, timing and warm dense

plasmas creation (Bhooshan@UCSD, Mark@LLNL)• In the process defining laser specs for each shot group, and priority/order of shots.

• Need to define laser (SP+LP) alignment procedure• Need to define target alignment procedure• Discuss data logging/shot sheet/real-time analysis, participants’ responsibilities• Need LSP simulations for transport study

Titan Feb./March 2009 Experiment planning Status: Jan. 20, 2009

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Titan Feb./March 2009 Campaign

Dates: Feb 9 - March 13 (5 weeks) [ will likely be delayed due to the Callisto accident] Expect ~ _75 shots Goals

• Create and characterize WDM targets using LP driven shock compression and heating of low density foams using side-on radiography and SOP• SP produced electron transport in such WDM targets by measuring Ka yield and angular distribution and compare with cold targets• Electron beam transport in shocked gold targets (CH/Cu/Au)

– Relevant to shocked Au cone tip physics in FI• Create and characterize WDM targets using SP produced protons

Test the emission spectroscopy technique for EP proton heating experimentSHCCD

Axis to Cu crystal

And HOPG

16°

20°

Target normal

17°

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The electron transport target will be irradiated with the long and short pulse in nearly opposite direction

Axis to Cu crystal

And HOPG

16°

20°

Target normal

17°

Long pulse beam (from Door A)

East-West axis

Short pulse beam

17.71°

18.5°

Target normalBeam axis

Long pulse beam parameter• f# = 7.35• 600 um spot with phase plate

tccAu

Target view from front (short pulse beam side)

Target view from behind (long pulse beam side)

45 degree bevel all around

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Cu imager 1(primary dia.)

To TL3

To TL2

DC-HOPG Cu (primary dia.)

FROG

Cu imager 2(primary dia.)

SOP (primary dia.)

Diagnostics and beam layout for

the WDM experiment(Jan. 20, 2009)

Beam axis

LPThrough Door A

Reentrant HOPG can be moved to various port as needed

Streaked HOPGSecondary diagnostics

IP for Ti Ka radiography in point projection(primary dia.)

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VSG

Titan short pulse

BN

Si?

D = 400m(ROC = 250m)

X = 375m

• Create 100micron wide plasma @ ? eV and solid density• Use VSG (has been developed for use on Titan) to diagnose spectral lines from Nitrogen k - shell ( He-like to H like lines at 400-700eV)

targetGrating Detector

Plane

3.8° to 7.8 ° ~ 325 eV to

1700 eV VSG = variable separation grating = XUV spectrometer

Warm dense plasma creation via proton isochoric heating and characterization by emission spectroscopy

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Diagnostics

Exp Diagnostics Location Comments StatusWDM experimentCu Ka imager back (TL2) and side (TL3) side on Cu Ka imager for transport in WDM ready?

Ti Ka backlighter equatorial plane along east-west point projection for radiagraphy shot ready?8-11keV HOPG back new designs, identical to EP ready?HOPG (Cu lines) back time-resolved measurement? ready?re-entranct HOPG flexible backup ready?SOP front target normal ?

FROG specular direction time resolved measurements

ride along x-ray diag TBDProton heating exp.VSG near target normal for proton shots Ready?RCF target normalLasersSP regular 17 degree from the front target normal availableLP coming through Door A 18 degree from the rear target normal availableLaser DiagnosticsEquivalent Plane laser diagnostic table? ?Pre-pulse Monitor laser dignostic table? ?Autocorrelator Are we doing this? ?

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Targets requested from LLNL

Target types Specs (in unit of µm) Number Laser beams

Heated transport 0.1Al/25CH/5Cu/138CRF/3.9Au 26 LP+SP on the package target

heated point projection radiography

0.1Al/25CH/5Cu/138CRF/5.1Au 6 LP on the package,

Ti disk, 250 µm dia, 10 µm thick 12 SP on Ti foil

20Al/5Cu/138CRF/3.9Au 4

Unheated transport 20Al/5Cu/15CH/3.9Au 6 SP only

20Al/5Cu/3.9Au 6

SOP calibration Al steps 20/40 µm thick 3 LP only

CRF shock velocity targets

CRF steps with Al flash on step side0.1Al/25CH/CRF step(150/160)/0.1Al

3 LP only

Transport in shockedAu target

0.1Al/25CH/5Cu/25Au 10 LP+SP

0.1Al/25CH/5Cu/12.5Au 5

Proton heating targets Hollow hemi with grid(2), hemi + Si(?) with Boron Nitride coating on side (specs to be added)(5)

7 SP only

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Draft List of shots (in the process of refining) LP only , SOP calibration and shock velocity

– SOP alignment with Al step targets (3 shots)– Shock velocity in CRF foam with SOP(3 shots)

LP+SP (Ti Ka backlight), shock timing– Backlight + Au mesh (4 shots)– Backlighting foam package at t=0 , before shock breakout(6 shots)

Diagnostic shots with and Cu foil (2 shots)

Short pulse(SP) only, e-beam transport in Al/Cu/CRF/Au (2 shots with 1ps, 2 shots with 10 ps) Al/Cu/Au (2 shots with 1ps, 2 shots with 10 ps) Al/Cu/CH/Au (2 shots with 1ps, 2 shots with 10 ps)

SP/LP on target, e-transport in shocked CRF foam targets– LP only, background shots (2 shots)– At t1, t2, t3 with 1ps SP, maximum energy? (9 shots)– Repeat with 10 ps SP, maximum energy (9 shots)

SP/LP on target, e-transport in shocked Au targets (CH/Cu/Au[25 or 12])

- Unshocked target with SP only (2 shots)

- Fully shocked Au with LP and SP (2 shots)

- After shock breakout with LP and SP (2 shots)

- Partially shocked Au with LP and SP (2 shots)

- Repeat unshocked and fully shocked case with 12 um Au (4 shots)

Proton beam production and heating

beam characterization using hemisphere targets (2shots)

Heating in a secondary foil targets (5shots)

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Who will be doing the experiment?(please let us know your interests, suggested responsibilities to be added/modified)

Schedule of People Suggested responsibilities Additional comments

Andrew full 5 weeks Lead and run the exp.

Sebastien Help on SOP setup, +proton shots In&out

Andy Oversee the exp + proton shots In & out

Prav Oversee the exp In&out

Yuan Half time? FROG ?

Dan Help setup EPM(?)+ridealong x-ray diagnostics

In&out

Kramer Help on diagnostics setup? In&out

Mingsheng Full 5 weeks Assist Andrew co-run the exp, Ti Ka radiography?

Foreign national

Hiroshi Full 5 weeks SOP+shot sheet Foreign national

Sugreev Full 5 weeks DC-HOPG + streaked HOPG

Brad Full 5 weeks Ka imagers + target alignment?

Bob+student/postdoc Full 5 weeks? Prepulse, autocorrelator,help Dan on the ride-along x-ray diag.

Foreign nationals

Student from OSU? ? ?

anybody else? ? ?

Rich Oversee the exp In&out

Farhat Oversee the exp In&out, Foreign national

01/20/2009 Wei, Sawada, Macphee, Mackinnon 10

Hydro simulation results of warm dense plasmas in the shocked foam package target (with Hyades code)

• Shock reaches the gold/CH foam interface at about 5.2 ns• Peak compression is achieved at bout 6.3ns with the compressed foam density of ~ 2g/cc, Te~15-20 eV,~ 10 µm in length (not suitable for transport study)

Target: 5µmAu/150µmCHfoam(0.15mg/cc)/5µmCu/25µmCH

Long pulse laser:Intensity 4e13 W/cm2 3ns square pulse, green

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Foam plasma condition at later time may be preferred for transport study

• Compressed foam plasmas relax and expand with time

• At 10ns, mass density of ~ 0.25-0.35 g/cc, ne~41022 cm-3, Te~5-7 eV, ~ 75 µm in length

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Foam plasma condition at later time may be preferred for transport study

• Compressed foam plasmas relax and expand with time

• At 10ns, mass density of ~ 0.3-0.4 g/cc, ne~(2-3)1022 cm-3, Te~5-7 eV, ~ 80 µm in length

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Lasnex simulations (M. Foord) show similar trends, but with higher compression

• At 10ns, mass density of ~ 0.55-1.1g/cc, Te~5-7 eV, ~ 30 µm in length

Higher absorption may lead to this higher compression

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Hyades simulation results for the shocked Au in the CH(25µm)/Cu(5µm)/Au(30 µm) target

Shock propagates into 12 µm Au at about 1.8 ns

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Hyades simulation results for the shocked Au in the CH(25µm)/Cu(5µm)/Au(30 µm) target

Shock propagates into 25 µm thick Au at about 2.9 ns