[ 1 ]

22 December 2011

Notes on jet-clump interaction targets (Black 1 – Black 4) for NLUF shots of 20 January 2011

Compilation of radiographs received from Robert Stamm on 21 December 2010, with approximate dimensions added.

Red lines are outline of jet-forming washer and axis of jet. Black lines and figures show approximate positions of bottom, top, and centre-of-gravity of clump of particles.

Pre-shot radiography axes are -45, 0, +45 degrees. Radiography axes in experiment are -36 and +36 degrees.

End view of target does not have sufficient dynamic range to show ball positions in pre-shot radiographs.

Slides 2 – 5 are pre-shot radiographs.Slide 6 is email from Robert Stamm.Slides 7 – 12 are target request.

The manufactured targets are a good approximation to what was requested, although the ball cluster is about 0.25 – 0.75 mm further downstream than requested.

Need decision on order of preference for these targets, and choice of backlighter times.

[ 2 ]

Black_1_RF101018-3(C-2) 2X -45Deg.jpg Black_1_RF101018-3(C-2) 2X 0Deg.jpg Black_1_RF101018-3(C-2) 2X 45Deg.jpg

Black_1_RF101018-3(C-2) 4X Sphere.jpgBlack_1_RF101018-3(C-2) 4X Hohlraum.jpg

1.22.

5

0.3 0.3

[ 3 ]

Black_2_RF101022-5(C-4) 2X 0Deg.jpgBlack_2_RF101022-5(C-4) 2X -45Deg.jpg Black_2_RF101022-5(C-4) 2X 45Deg.jpg

Black_2_RF101022-5(C-4) 4X Hohlraum.jpg Black_2_RF101022-5(C-4) 4X Sphere.jpg

1.11.

6

0.4

[ 4 ]

Black_3_RF101101-4(C-5) 2X -45Deg.jpg Black_3_RF101101-4(C-5) 2X 0Deg.jpg Black_3_RF101101-4(C-5) 2X 45Deg.jpg

Black_3_RF101101-4(C-5) 4X Hohlraum.jpg Black_3_RF101101-4(C-5) 4X -Sphere.jpg

1.02.

5

0.30.4

[ 5 ]

Black_4_RF101018-4(C-3) 2X -45Deg.jpg Black_4_RF101018-4(C-3) 2X 0Deg.jpg Black_4_RF101018-4(C-3) 2X 45Deg.jpg

Black_4_RF101018-4(C-3) 4X Sphere.jpgBlack_4_RF101018-4(C-3) 4X Hohlraum.jpg Black_4_RF101018-4(C-3) 4X -Sphere85keV.jpg

1.02.

5

0.2 0.3

[ 6 ]

Email from Robert Stamm, 21 December 2010

Stamm, Robert M [rmstamm@sandia.gov]

Hi John,

Attached are the radiographs of the “Type A” 300 um offset foam assemblies (Jet and multi-ball interaction : OMG-ASM-0164 (nominally 4 targets with approx 25 balls, set 300 um off center) :Use components C-2, C-3, C-4, C-5.

It was difficult to penetrate through the titanium and gold ablators to see the offset balls in the foam. Let me know if these are acceptable. If not, we can try a much longer exposure when we come back the week of 1/3/11 after the holiday shutdown and see if that will work.

I will be out of office 12/22 through 1/3/11.

We will send the rest with the QA report to you by ~ 1/12/11.

Thanks,

Robert Stamm

Schafer Corporation at Sandia National Labs1515 Eubank SE RM.1241 BLDG.962 MS1196Albuquerque, NM 87123Desk 505 284 8385 Pager 505 951 5605 FAX 505 844 0573http://www.schafercorp.com/Company/sl/icf.htm

[ 7 ]

NLUF AstroShkClmp-11A : Jet and multi-ball targets

Drawings SK-2010-11-08-A (001 – 005), version 2

Requirement is :

4 targets with approx. 25 number balls of 125 µm dia.

[ 8 ]

1100(tol. -100, +200)

4000 dia. nominal

1000 dia. spherical region containing embedded particles. Centre of sphere is radially offset 300 from centre line of hohlraum.

RF foam (0.3 g/cc)

4000 nominal

4000

dia

.

1600

dia

.

1200

dia

. LE

H

1200

50 end-wall thickness

50 side-wall thickness

SK-2010-11-08-A-001Target components for NLUF AstroShkClmp-11A, jet and multi-ballDimensions in µm8 November 2010

100

125

700

CL

Gold and titanium disks supplied by AWE

Hohlraum

Hohlraum and experimental package

[ 9 ]

45.0° 45.0°

1.5 mm (3 positions, as shown)

Alignment fibres, 3 positions as shown. Confirm fibres are visible in XTVS and YTVS views (see SK-2010-11-08-A-005)

A

A

View on B

B

Fiducial grid

P7

Mounting stalk10.8°

P6

Section AA

SK-2010-11-08-A-002-ver2Target components for NLUF AstroShkClmp-11A, jet and multi-ball : alignment fibre positionsThird angle projectionDimensions in µm9 November 2010

H2

[ 10 ]

P7

H2

P6

36°

300 radial offset from centre line of hohlraum

LOS to TIM3 in H18

View on CSection AA

1100 (tol. -100, +200)

A

A

C

Fiducial grid

SK-2010-11-08-A-003-ver2Target components for NLUF AstroShkClmp-11A, jet and multi-ball : embedded particle positionsThird angle projectionDimensions in µm9 November 2010

[ 11 ]

3300

Cut off corner of grid, to avoid left-right uncertainty in pre-shot radiographs

B

View on AView on B

A

Fiducial grid

SK-2010-11-08-A-004-ver2Target components for NLUF AstroShkClmp-11A, jet and multi-ball : fiducial grid positionThird angle projectionDimensions in µm9 November 2010

[ 12 ]

SK-2010-11-08-A-005Target components for NLUF AstroShkClmp-11A, jet and multi-ball : XTVS and YTVS views and backlightersDimensions in mm8 November 2010