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Lower Hybrid System Integration in ITER

Lower Hybrid System Integration in ITER. LHCD design ongoing work through EFDA and interfaces with IO Items: Status of the LHCD system for ITER …inside IO  Work done and to be done.  Port plug location discussion (see A. Ekedhal presentation) Tokamak environment constraints.

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Lower Hybrid System Integration in ITER

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  1. Lower Hybrid System Integration in ITER • LHCD design ongoing work through EFDA and interfaces with IO • Items: • Status of the LHCD system for ITER …inside IO  Work done and to be done. •  Port plug location discussion (see A. Ekedhal presentation) • Tokamak environment constraints

  2. Lower Hybrid System Integration in ITER LHCD status in IO Even if LHCD system is not in the construction baseline, some work has to be done to allow its further installation: - IO “integration” work To allow the foreseen integration of LH H&CD system on IO, we should prepare this integration as far as possible (same for all upgrade purposes)  finalize SRD (System Requirement Document)  finalize interface documentation as SICD (System Interfaces Control Documents) (buildings, port, cooling, pumping, dedicated gas injection valve, …)  produce for LHCD, all documentation as required for other H&CD systems - IO “Accompanying” work - Provide fusion community some data to sustain and make useful the ongoing design work (space available, heat load, neutron flux, scenarios parameters etc…) - Participation to the meetings

  3. Lower Hybrid System Integration in ITER IO internal work on LHCD Integration work: • SRD: This document describes all the requirement coming from the system and how it will respond to ITER constraint. It is also the baseline for further interaction with ITER subsystems (as cooling water, HVAC, HVPS, etc.) All ITER documents reference as handbooks, seismic hypothesis, quality classification are given in reference in the document. They all bring constraints on the design…. SRD was reviewed, new version to be implemented on IDM asap, GT Hoang as a reviewer. - SICDs: All interfaces have to be described  On IC, we chose to make one document per interface including internal subsystem interfaces. • Example of SICDs:..\Interfaces\ICD ICH\rf sources\ICD_51.S_26.CC_DRAFT.doc

  4. Lower Hybrid System Integration in ITER LHCD integration Equatorial Ports allocations in the working version of Project requirement LH LH LH Partly wrong IC in port 15 and LH in port 11. IC IC IC

  5. Lower Hybrid System Integration in ITER ~ 50 m ~100 m LHCD integration What’s about routing to tokamak ports?

  6. Lower Hybrid System Integration in ITER Assembly Hall LHCD integration What’s about routing to tokamak ports? IC Transmission Lines Tokamak EC Waveguides LH Port LH System IC EC

  7. Lower Hybrid System Integration in ITER LH wave guides LHCD integration What’s about routing to tokamak ports?

  8. Lower Hybrid System Integration in ITER LHCD integration What’s about routing to tokamak ports?

  9. Lower Hybrid System Integration in ITER LHCD integration What’s about routing to tokamak ports?

  10. Lower Hybrid System Integration in ITER LHCD integration What’s about routing from to tokamak ports?

  11. Lower Hybrid System Integration in ITER LHCD integration What’s about routing to tokamak ports?

  12. Lower Hybrid System Integration in ITER LHCD integration What’s about routing to tokamak ports?

  13. Lower Hybrid System Integration in ITER LHCD integration Tokamak environment

  14. Lower Hybrid System Integration in ITER LHCD integration Tokamak environment Principle Features of ITER showing the main Confinement Boundaries (ITER_D_259V26)

  15. Lower Hybrid System Integration in ITER LHCD integration Port Plug

  16. Lower Hybrid System Integration in ITER LHCD integration Port Plug for diagnostics.

  17. Lower Hybrid System Integration in ITER Other Questions raised during past meetings Use of Be for the antenna front face: what is the thinness, what is the max. temperature allowed? For the first wall blanket, a 10 mm thinness of Be is foreseen, considering an heat load of 5 MW/m2 max. A maximum 600 °C temperature can be reached but of course the lower the better. Heat Extraction capacity? In SRD we defined that the HVAC requirement will be equal to 1% of the settled power, i.e. 200 kW. This requirement is linked to sources where most of the heating is produced. Dimension of buildings See slides.

  18. Lower Hybrid System Integration in ITER Other Questions raised during past meetings Bioshield requirement? Project Requirement: • Decay times • Materials shall be selected and shielding shall be provided to permit hands-on maintenance (effective dose per hour < 100 µSv) within 40 days for maintenance within the cryostat. • Materials shall be selected and shielding shall be provided to permit hands-on maintenance (effective dose per hour < 100 µSv) within 12 days (106 s) for maintenance in the interspace between the port plug and the bioshield. • Materials shall be selected and shielding shall be provided to permit hands-on maintenance (effective dose per hour < 100 µSv) within 24 hours for maintenance outside the bioshield. + Other questions to be answered to be listed in our previous meeting minutes ( Port cell 15 dimensions, Port Plug detailed structure, definition of radiated power in IO, etc…)

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