1. M. von Hellermann Progress and Status of Active Beam Spectroscopy for ITER Manfred von Hellermann 10th ITPA diagnostic Meeting Kurchatov, Moscow, TRINTI Troitsk April 10 -14, 2006

2. M. von Hellermann Acknowledgements FOM / FZJ : Serge Brons, Roger Jaspers, Olaf Neubauer, Andrey Litnovsky, Michael Pap ITER/ IT: Chris Walker, Christian Ingesson, Robin Barnsley, George Vayakis Kurchatov: Alexey Gorshkov, Konstantin Vukolov TNO: Willem Vliegenthart, Kees Moddemeijer TRINITI: Sergei Tugarinov UKAEA : Nick Hawkes, Bob Walton, Cliff Marren

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4. Performance Review DNB Issues Periscope development Radial overlap issues Port swap Mirror development Maintenance Issues CXRS Pilot Experiment on Textor Shared Software Development (EU,RF,US)

5. M. von Hellermann Performance Studies reviewed….. EU EFDA contracts 2005 EU/RF CXRS Meeting 2005 Shared Pilot Experiment 2006

6. M. von Hellermann Performance requirements 1) signal-to-noise a) detection efficiency and instrumentation b) energy dependence for beam stopping and emission rates 2) spatial resolution a)measurement requirement table b)overlap of upper and equatorial port views c) magnetic field measurements 3) minimisation of blanket cuts a) neutron reduction b) steerability

7. M. von Hellermann  plasma  A plasma =  spectrometer  A spectrometer

8. M. von Hellermann CX spectral intensity

9. M. von Hellermann Approximation of Gaussian DNB profile

10. M. von Hellermann To: P.L.Mondino, E.Di Pietro, T.Inoue, A.Costley, V.Mukhovatov From: A.Panasenkov Date: October 27, 1999 Peak current density 60mA/cm^2

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12. Radial Resolution Need for Upper and Equatorial periscopes Poloidal and Toroidal Velocity Measurements

13. Upper Port 2 Upper Port 3 Radial Resolution for U-ports 2 and 3 a/20 a/30 M. von Hellermann

14. Radial Resolution for Upper and Equatorial Port

15. M. von Hellermann Beam Issues…… Beam divergence Modulation ?? Duty Cycle Maintenance Blanket Cut

16. M. von Hellermann Neutral beam stopping cross-sections

17. Tilted DNB aimed at magnetic axis Can blanket cut be reduced without loss of performance ?

18. M. von Hellermann Positive ion source Negative ion source Energy(keV/amu)(80+/-10) (D 0 )(100+/-20)(H 0 ) Power(MW)2.8 (full E)2.2 Neutral Current (A)16.6 (full E)22 Species mix0.85:0.08:0.071:0:0 Divergence(mrad)4.35 (10) Spot size (m)<0.07<0.1 (0.3) modulationdesirable Duty cycle1:4

19. M. von Hellermann Pos. ion sourceNeg. ion source  stop (10 -20 m 2 ) 2.63,4.16,5.322.28 Zeta (r/a=0.3)0.016, 0.002, 0.0004 0.026  cx (HeII)(10 -22 m 2 ) 3.77, 16.1, 15.91.89  cx (CVI)(10 -22 m 2 ) 25.5, 35.6,17.916.02  cx (BeIV)(10 -22 m 2 ) 14.4, 31.5,22.78.42 SNR(HeII)1812 SNR(CVI)5853

20. M. von Hellermann Port plug allocation Reference plug : Upper port 3 Alternative plug : Upper port 2

21. M. von Hellermann Serge Brons, FZJ Alexey Gorshkov, Kurchatov Port 3 Port 2 2 legged optics and separate pipe with first mirror and shutter

22. M. von Hellermann Intersections of lines-of-sight with blanket structure Port plug 3 Port plug 2

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24. Retractable 3-pipe concept

25. M. von Hellermann Graphical representation of the deflection in meters of the whole unit. The centre of the mirror is bend upward. Deflection Analysis FZJ Michael Pap

26. M. von Hellermann OPTICS Recent studies at TNO Delft Willem Vliegenthart Kees Modemeijer

27. M. von Hellermann Alternative Cassegrain configuration Imaging of entire DNB path 0<r/a<1 Courtesy TNO

28. M. von Hellermann TNO 2005, Willem Vliegenthart Cassegrain optics with improved Imaging qualities

29. M. von Hellermann Proposed arrangement of fibre head 24 radial channels along DNB 5 fibres across (2w) Core region: 15 channels high resolution (<a/30) Outer region: 9 channels low resolution(<a/20)

30. M. von Hellermann Inverse imaging of central 1mm fibre onto DNB, box scale 50 mm, preliminary design, courtesy TNO

31. M. von Hellermann Alignment issues 1)Pre-alignment in assembly phase 2)Alignment by rotation of mirror tubes 3)Fine-alignment by fibre-holder adjustments Alignment control 1)Radial positions by BES Doppler shifts 2)Height and angle with respect to DNB a) In vessel inspection (TV cameras) b) Use of 2-dim fibre array and maximisation of BES signal

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35. Measuring Capabilities of ITER Core CXRS

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37. MSE

38. M. von Hellermann Uport 2

39. M. von Hellermann Port 2 Port 3

40. M. von Hellermann Upper port 2 Upper port 3

41. M. von Hellermann Uport 2

42. ITER CXRS PILOT EU:Roger Jaspers & Manfred von Hellermann RF: Sergei Tugarinov

43. Pilote Experiment on TEXTOR

44. M. von Hellermann High Throughput: F/3 High Resolution: 2.5 Å/mm TRINITI Spectrometer, S.Tugarinov

45. Aims 1.Optimisation of spectral instruments and detectors 2.Sensitivity study for MSE and ratiometry for top port

46. Aims 1.Optimisation of spectral instruments and detectors 2.Sensitivity study for MSE and ratiometry for top port 3.Multi-tasking set-up: MSE/BES/CXRS-D/He/C CXRS: T i, v pol,v tor, n z* n b BES: n b, P dep, MSE (  B t, B pol, q, R meas, E r. ) No absolute calibrations!!!! No absolute calibrations!!!! No absolute calibrations!!!! No absolute calibrations!!!! No absolute calibrations!!!! No absolute calibrations!!!!

47. M. von Hellermann Summary Review of first mirror position, mirror material, Mirror heating and cooling Allocation of CXRS/BES Upper port Review of optics Specification of fibre link Desired overlap of Core and Edge CXRS Use of beam emission spectroscopy Radial resolution and incremental scans Alignment procedures Magnetics :Total magnetic fields, pitch angles

48. M. von Hellermann Summary, continued Measuring capability Instrumentation Pilote experiment on TEXTOR