Status of Vertical Neutron Camera Integration

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Presentation transcript:

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 Total neutron yield (fusion power) measurement Optimization of the schemes of additional heating, including ICRH in particular

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

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

3D view

Removable Rail Part with collimator block

Added block part for diverter

Detector modules

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

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

MCNP Model of ITER

MCNP Model of ITER

MCNP Model of VNC

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

Calculation results

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

Calculation results

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

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

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

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

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.

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