US ITER UFA Meeting APS-DPP Savannah, GA Ned Sauthoff (presented by Dale Meade) November 15, 2004 US In-kind Contributions and Starting Burning Plasma Research

US In-kind Contributions to ITER 44% of ICRH antenna + all transmission lines, RF-sources, and power supplies Start-up gyrotrons, all transmission lines and power supplies 16% of port-based diagnostic packages 4 of 7 Central Solenoid Modules Steady-state power supplies Cooling for divertor, vacuum vessel, … Baffle (Module 18) pellet injector Tokamak exhaust processing system Roughing pumps, standard components

Tentative US in-kind contributions by Value (total US in-kind contribution ~ 10%) 4 of 7 Central Solenoid Modules Tokamak exhaust processing system Roughing pumps, standard components, pellet injector 44% of antenna + all transmission lines, RF-sources, and power supplies Start-up gyrotrons, all transmission lines and power supplies 15% of port-based diagnostic packages Steady-state power supplies Cooling for divertor, vacuum vessel, … Baffle (Module 18)

Highest Priority US ITER Physics Tasks 1) RWM control in ITER Steady State Scenarios –Benchmarking of codes used for simulation of RWM feedback control on ITER scenario 4 plasmas. –Study of ITER RWM control with in-vessel coils. –Specification on noise in sensors used for RWM control. 2) VDE, Disruptions and their mitigation in ITER –Validation of the codes in experiments, simulation of disruptions in Scenario 2, effect of blanket modules, 3D halo currents, impurity generation / transport / radiation loss for the assessment of beta drop during VDEs, simulation of high-pressure noble gas jet penetration into Scenario 2 plasma, design requirements to the ITER system of disruption mitigation, evaluation of the effects of radiation produced by gas injection on the first wall and diagnostic system. –Model development of halo current width during VDEs based on experiments –Simulations of VDEs in ITER with 3D MHD code –Disruption mitigation by noble gas injection –Determine if a jet of noble gas can penetrate deeply into high pressure plasma 3) Evaluation of Fast Particle Confinement of ITER –Evaluation of the effect of fishbone oscillations, TAE modes and toroidal ripple on the fast particle loss 4) Assess the effects of radiation transfer on the ITER divertor solution –Assess the physics in current codes to properly predict the effects of opacity and radiation transfer on divertor plasma solutions for ITER 5) Benchmarking of ICRF codes on ITER plasma and antenna

Near-term US ITER Project Activities Addressing areas of risk in provisional US in-kind contributions –Performing R&D and design work in areas of US in-kind contributions in partnership with the VLT with ITER-Direct funding for industrial procurements, etc. –Focus on high-risk near-term issues, such as magnet R&D and design –Working with DOE to establish an effective Burning Plasma Diagnostic R&D and Design Activity Preparing project management aspects –Exhibit 300 is being reviewed by OMB –CD-0 Mission Need Statement is being reviewed within DOE –CD-1 preparation is underway, targeting completion in Spring 2005 Cost range Conceptual design Preliminary Project Execution Plan Acquisition Strategy –CD-2 will entail a disciplined Preliminary Design Review and Cost Estimate, leading to establishment of the cost, schedule and performance baseline in Fall Winter