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PERSISTENT SURVEILLANCE FOR PIPELINE PROTECTION AND THREAT INTERDICTION

ITPA Diagnostic Topical Group Plans. Presented by R.L. Boivin for the ITPA Diagnostic group Presented at ITPA CC meeting Dec. 12 th 2008. PERSISTENT SURVEILLANCE FOR PIPELINE PROTECTION AND THREAT INTERDICTION. Goals.

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PERSISTENT SURVEILLANCE FOR PIPELINE PROTECTION AND THREAT INTERDICTION

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  1. ITPA Diagnostic Topical Group Plans Presented byR.L. Boivin for the ITPA Diagnostic group Presented at ITPA CC meeting Dec. 12th 2008 PERSISTENT SURVEILLANCE FOR PIPELINE PROTECTION AND THREAT INTERDICTION

  2. Goals • Address scientific and generic issues that could directly affect the design and performance of ITER diagnostic systems • Develop solutions to diagnostic environmental issues encountered in a BPX such as ITER • Perform scientific assessment of diagnostic systems and how they can support ITER operating scenarios • Develop and propose new techniques where performance may be marginal, or incompatible in a DEMO environment • It is expected that the role and goals of the Diagnostic Group will evolve considerably in the next few years.

  3. Specialist Working Groups • The ITPA-Diagnostic Group has presently 7 SWG to help in specific issues • Gather large pool of experts across the world • Groups: Thomson, Reflectometry, Neutron, Spectroscopy, Beam Aided Spectroscopy, First Mirrors, Radiation Effects • Over 150 participants • We are planning a reorganization of these groups in the next few months • New groups, different alignment, new leadership • Plan to complete by next meeting in April 2009

  4. High Priority Items -1 • Development of methods of measuring the energy and density distribution of confined and escaping -particles • Develop and apply ORBIT code for studying feasibility of an escaping alpha detector (completion target: Fall 2009) • Study compatibility of scintillator-based detector with radiation environment and signal to background ratio (target: Fall 2009) • Evaluate usefulness of an activation-based detector with limited time resolution (target: Spring 2009) • Provide conceptual design of an activation-based detector for possible baseline inclusion (target: Spring 2009) • Continue development and evaluation of possible alternate techniques (target: long-term) • Develop and assess possible alternates to CTS for confined alpha particles (fast ions) diagnostic (now medium priority)

  5. High Priority Items -2 • Assessment of the calibration strategy and calibration source strength needed for neutron diagnostics • Develop proper Monte-Carlo model for ITER for proper assessment of calibration techniques and plans (target: model - Spring 2009, assessment - Fall 2009)

  6. High Priority Items -3 • Determination of life-time of plasma facing mirrors used in optical systems • Identify best material for mirrors under erosion and/or deposition conditions • Model particle fluxes for planned mirrors (main chamber, divertor) • Develop and test techniques for erosion/deposition mitigation • Evaluate other effects (eg Helium blistering) • Roadmap has been elaborated • Workplan is under review • Prioritization is beginning (target: Spring 2009) • See Joint Experiment DIAG-2 • Significant additional resources are required to complete this task

  7. High Priority Items -4 • Development of the requirements for the measurement of hot dust, and assessment of techniques • Work with the DSOL group to evaluate expected hot dust levels and impacts in ITER (target: Fall 2009) • Field and test capacitive micro-balance diagnostics in several devices across the world (target: Fall 2011) • Suggest making this a new Joint Experiment - DIAG-4

  8. High Priority Items -5 (new) • The assessment of impacts of invessel wall reflections on diagnostics • Evaluate existing applications/software for the calculation of light reflections (target: Spring 2009) • Assess impacts of these reflections on ITER optical systems, and guide possible mitigation and/or relocation as needed (target: Spring 2010) • Build database of reflection coefficients for first wall material(s) as close to expected conditions (target: preliminary - Spring 2010)

  9. High Priority Items -6 (new) • Assessment of the measurement requirements for plasma initiation and identification of potential gaps in planned measurement techniques • Based on existing devices’ experience, assess existing measurement requirements and adjust as needed (target: Fall 2009) • Identify gaps in techniques and propose alternatives (target: Spring 2010)

  10. Summary - Joint Experiments • DIAG-2: Determination of life-time of plasma facing mirrors used in optical systems • On-going, reported at the last ITPA (Nov. 2008) • DIAG-3: Resolving the discrepancy between ECE and TS at high Te • On-going, reported at the last ITPA • DIAG-4: (Proposed) Development and fielding of Capacitive Micro-Balance in existing devices to measure dust

  11. Upcoming meetings • 16th meeting - St-Petersburg, RF (April 20-24, 2009) • Special session candidate: fusion product diagnostics (to be confirmed) • 17th meeting - Pohang, Korea (September 2009) • Special session candidate: real-time data analysis and control (basic and advanced) and/or measurement required for plasma initiation • 18th meeting - US (likely to be tied with HTPD Spring 2010) Provisional • Also, workshop on Radiation Effects on Burning Plasma Diagnostics (IFE and MFE) - Spring 2009

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