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Albert Tsutskikh Anatoli Krasilnikov Yuri Kaschuck Denis Prosvirin SRC RF TRINITI 11 of April 2006

Status of Vertical Neutron Camera Integration. Albert Tsutskikh Anatoli Krasilnikov Yuri Kaschuck Denis Prosvirin SRC RF TRINITI 11 of April 2006. VNC Purposes. Collimated measurements of neutron source profile with spatial resolution along ITER major radius

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Albert Tsutskikh Anatoli Krasilnikov Yuri Kaschuck Denis Prosvirin SRC RF TRINITI 11 of April 2006

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  1. Status of Vertical Neutron Camera Integration Albert Tsutskikh Anatoli Krasilnikov Yuri Kaschuck Denis Prosvirin SRC RF TRINITI 11 of April 2006

  2. VNC Purposes • Collimated measurements of neutron source profile with spatial resolution along ITER major radius • Total neutron yield (fusion power) measurement • Optimization of the schemes of additional heating, including ICRH in particular

  3. VNC Plasma Coverage Collimator lengths 1,4 – 1,6 m Diameters 30 mm Coverage from –0.7 to 0.7 ρ

  4. Divertor Port #2 Arrangement Drawing Blanket module #18 Divertor cassette Neutron collimator block Detectors modules

  5. 3D view

  6. Removable Rail Part with collimator block

  7. Added block part for diverter

  8. Detector modules

  9. MCNP – A General Monte Carlo N-Particle Transport Code • Program MCNP (Transport Methods GroupLos Alamos National Laboratory) • Version 4C • Cross-section library “endf601” (Evaluated Nuclear Data File)

  10. MCNP Model of ITER Coils Intercoil structure Blanket module #18 with slot Collimator Block Diverter Cassette withblock part

  11. MCNP Model of ITER

  12. MCNP Model of ITER

  13. MCNP Model of VNC

  14. Model of Source Source spatial distribution En=14.1 MeV

  15. Calculation results

  16. Calculation resultsfor U-238 FC, threshold – 1 MeV & NDD, threshold 7 MeV Signal – flux of nonscattared neutrons, background – flux of scattered neutrons

  17. Calculation results

  18. New Problem #1 From L. Bertalot Interface Divertor cassette – Rail (second part of collimator block)

  19. New Problem #2 From L. Bertalot Need to verify if complete assembly fits inside the cask

  20. New Problem #3 From L. Bertalot Fixed to the Cassette Body

  21. New Problem #4 From L. Bertalot Integrates the Locking Pins Integrates the Rail

  22. Conclusions • Lengths of collimators are enough for effective VNC operation. Correction coefficient should be applied for channel #1 & #10. • Integrated with divertor cassette Lower VNC is providing required collimation and plasma coverage for both (238U FC, NDD) discussing detectors. • Interface issues (integration with divertor cassette, interface with removable rail part and blanket module) could be solved during further design activity.

  23. MUST BE SOLVED • Procedure of assembling and installations • Tools for installation • Mechanical prelifting construction and other modification divertor cassette • Alignment and calibration • Mechanical details of rail • Agreement of blanket module # 18 modification to provide VNC lines of site penetration • Interfaces with other port diagnostics • Cable connections and communications • Analysis of tomography possibilities with discussing RNC and VNC lines of sight

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