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Strike Point Observation (SPO) Diagnostics on AUG

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Presentation on theme: "Strike Point Observation (SPO) Diagnostics on AUG"— Presentation transcript:

1 Strike Point Observation (SPO) Diagnostics on AUG
Arthur Weller  Introduction  New fast camera  Replacement of optical fibres  Tests and calibration  Installation of new optical fibres, LOS geometry  Data acquisition & analysis, fast camera tool  First data from AUG first .... then I would like to address some physics issues, and discuss diagnostics requirements & techniques... then I will go through selected diagnostics in a very brief manner, addressing.... and finall make some concluding remarks Acknowledgments for substantial assistance to: T. Lunt, A. Mayer, P. Bischoff, Ch. Veth, J. Neumann, H. Blank, B. Kurzan

2 Introduction - diagnostics needed refurbishments (new camera & fibres) -
● 2 fibre arrays monitor light emission across inner and outer divertor plates ● beams splitted into Da- and CIII components ● measured by fast CCD/CMOS camera old system (until end of 2009) first .... then I would like to address some physics issues, and discuss diagnostics requirements & techniques... then I will go through selected diagnostics in a very brief manner, addressing.... and finall make some concluding remarks

3 Strike Point Observation (SPO) Diagnostics
first .... then I would like to address some physics issues, and discuss diagnostics requirements & techniques... then I will go through selected diagnostics in a very brief manner, addressing.... and finall make some concluding remarks ● light pattern recorded by Miro eX4 (Vision Research) ● imaged on 256 x 128 pixels, allowing frame rates up to 15 kfps ● pre-processing of Images (ROIs) by Fast Camera Tool (Ch. Veth)

4 New Fast Camera (Phantom Miro eX4) - imaging tests in laboratory -
1st test assembly (good old fibre bundle, filters removed,inhomogenous illumination) 55 mm Zeiss object lens towards fibre bundle, 50 mm Nikkor lens on camera first .... then I would like to address some physics issues, and discuss diagnostics requirements & techniques... then I will go through selected diagnostics in a very brief manner, addressing.... and finall make some concluding remarks frame size 400 x 256 100 ms 4 ms

5 Tests and Calibration ● Assembly without filters
● 2 fibre bundles (100 m fibres) : - good old bundle (LWL_alt) - new bundle (but fibres disordered, LWL_neu-1)) ● 85 mm Nikkor object lens towards fibre bundle, 50 mm Nikkor lens on camera  light points fit into 256 x 128 pixel frame ● Homogenous illumination of fibres with Ulbricht Sphere first .... then I would like to address some physics issues, and discuss diagnostics requirements & techniques... then I will go through selected diagnostics in a very brief manner, addressing.... and finall make some concluding remarks

6 Tests and Calibration test_spo_ulb_noc3_256x128_4mues_1.cine LWL_alt LWL_neu-1 first .... then I would like to address some physics issues, and discuss diagnostics requirements & techniques... then I will go through selected diagnostics in a very brief manner, addressing.... and finall make some concluding remarks ● Frame size: 256 x 128 pixels, exposure time: 4 ms ● Homogenous illumination of fibres by Ulbricht Sphere ● LWL_alt: 69 good fibres, LWL_neu-1: 68 good fibres ● apertures: 1.4, no lens on entrance of fibre bundles

7 Re-Order LWL_neu-1 by Moving Absorber
first .... then I would like to address some physics issues, and discuss diagnostics requirements & techniques... then I will go through selected diagnostics in a very brief manner, addressing.... and finall make some concluding remarks ● LWL_alt: 69 good fibres, LWL_neu-1: 68 good fibres ● lens on entrance of fibre bundles

8 Re-Order LWL_neu-1 by Moving Absorber
first .... then I would like to address some physics issues, and discuss diagnostics requirements & techniques... then I will go through selected diagnostics in a very brief manner, addressing.... and finall make some concluding remarks

9 Re-Order LWL_neu-1 by Moving Absorber
all right middle left first .... then I would like to address some physics issues, and discuss diagnostics requirements & techniques... then I will go through selected diagnostics in a very brief manner, addressing.... and finall make some concluding remarks

10 Strike Point Observation (SPO) Diagnostics - refurbishment in 2010 -
● Light splitted into Ha and CIII filtered channels ● Images of light spots recorded by fast CMOS camera ● Light emission across divertor plates imaged on fibre bundles (Ds < 3mm) ● new bundle for inner divertor to be replaced again !

11 Strike Point Observation (SPO) Diagnostics
● toroidal alignment of LOS in gap between adjacent tiles to reduce light reflection ● no significant change of neutral density expected across gap ● light pattern recorded by Miro eX4 (Vision Research) ● imaged on 256 x 128 pixels, allowing frame rates up to 15 kfps ● pre-processing of Images (ROIs) by Fast Camera Tool (Ch. Veth)

12 Strike Point Observation (SPO) Diagnostics
● toroidal alignment of LOS into gap between adjacent tiles to reduce light reflection ● no significant change of neutral density expected across gap first .... then I would like to address some physics issues, and discuss diagnostics requirements & techniques... then I will go through selected diagnostics in a very brief manner, addressing.... and finall make some concluding remarks according to Goldston, Plasma Physics

13 New SPO Viewing Geometry - Tests and Calibration (after in-Vessel Installation) -
Div II d ● LWL_alt  outer divertor 68 light spots on Bg1,2, 1 missing ● LWL_neu-1  inner divertor 39 light spots on TPi,TPib,c, 21 (?) missing, ordering ? ● S-coordinate of spots measured ● R-z coordinates of spots calculated first .... then I would like to address some physics issues, and discuss diagnostics requirements & techniques... then I will go through selected diagnostics in a very brief manner, addressing.... and finall make some concluding remarks

14 New SPO Viewing Geometry - Tests and Calibration (after in-Vessel Installation) -
Div II d ● LWL_alt  outer divertor 68 light spots on Bg1,2, 1 missing ● LWL_neu-1  inner divertor 39 light spots on TPi,TPib,c, 21 (?) missing, ordering ? ● S-coordinate of spots measured ● R-z coordinates of spots calculated first .... then I would like to address some physics issues, and discuss diagnostics requirements & techniques... then I will go through selected diagnostics in a very brief manner, addressing.... and finall make some concluding remarks

15 Tests and Calibration

16 Experimental Setup - between sectors 12 and 13 (f = 270°) -
Fibres (100 mm) arranged in 2 bundles (2 x ~65 fibres) Optical heads mounted underneath lower divertor viewing through gaps

17 New SPO Viewing Geometry - S-coordinates and R-z coordinates -
first .... then I would like to address some physics issues, and discuss diagnostics requirements & techniques... then I will go through selected diagnostics in a very brief manner, addressing.... and finall make some concluding remarks

18 New SPO Viewing Geometry - S-coordinates and R-z coordinates -
first .... then I would like to address some physics issues, and discuss diagnostics requirements & techniques... then I will go through selected diagnostics in a very brief manner, addressing.... and finall make some concluding remarks

19 Tests and Calibration (after in-Vessel Installation)
LWL_neu-1: determination of light spot position for each fibre possible ? first .... then I would like to address some physics issues, and discuss diagnostics requirements & techniques... then I will go through selected diagnostics in a very brief manner, addressing.... and finall make some concluding remarks ● LWL_neu-1  inner divertor 39 light spots on TPi,TPib,c, 21 (?) missing, ordering ?

20 IDL Analysis Program first ....
then I would like to address some physics issues, and discuss diagnostics requirements & techniques... then I will go through selected diagnostics in a very brief manner, addressing.... and finall make some concluding remarks

21 Calibration Measurements (Ulbricht Sphere) Vignetting Effect, ROI Generation
first .... then I would like to address some physics issues, and discuss diagnostics requirements & techniques... then I will go through selected diagnostics in a very brief manner, addressing.... and finall make some concluding remarks

22 SPO Data in AUG DL Discharge - shift of strike point (outer divertor plate) -
#26901 #26901 Ha-Emission across Outer Divertor #26901 first .... then I would like to address some physics issues, and discuss diagnostics requirements & techniques... then I will go through selected diagnostics in a very brief manner, addressing.... and finall make some concluding remarks

23 SPO first .... then I would like to address some physics issues, and discuss diagnostics requirements & techniques... then I will go through selected diagnostics in a very brief manner, addressing.... and finall make some concluding remarks

24 SPO first .... then I would like to address some physics issues, and discuss diagnostics requirements & techniques... then I will go through selected diagnostics in a very brief manner, addressing.... and finall make some concluding remarks

25 SPO first .... then I would like to address some physics issues, and discuss diagnostics requirements & techniques... then I will go through selected diagnostics in a very brief manner, addressing.... and finall make some concluding remarks

26 SPO first .... then I would like to address some physics issues, and discuss diagnostics requirements & techniques... then I will go through selected diagnostics in a very brief manner, addressing.... and finall make some concluding remarks

27 Introduction Connection Lengths, AUG with RMP T. Lunt T.Lunt,
ASDEX Upgrade A. Weller, Garching 2011

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