1. May 2005 PFC Coord Comm Planning Mtng, PPPL FY06 PISCES Program Plans G.R.Tynan for G. Antar, M. Baldwin, R.W. Conn, R. Doerner, D. Gray, A. Grossman, J. Hanna, E. Hollmann, C. Laizhong, S. Luckhardt, F. Najmabadi, D. Nishijima, E. Oyarzabal, R. Seraydarian, M. Shimada, G.R. Tynan, Y. Zheng, J. Yu Center for Energy Research UCSD

2. May 2005 PFC Coord Comm Planning Mtng, PPPL PISCES Program Management Has Been Re-Organized Tynan & Najmabadi are Faculty PIs (Conn still Emeritus PI) Doerner Leading Materials Program Tynan Leading Physics Program Future Program Leadership Determined in Concert w/ DOE Discussions

3. May 2005 PFC Coord Comm Planning Mtng, PPPL FY06 Program Elements & Balance ITER Support (60%) –5 Science FTE/4 Tech Staff Enabling PMI Physics & Technology (30%) –3 Science FTE/0.5 FTE Tech Staff/4 Grad- Students ALPS Support (10%) –0.5 Science FTE/0.5 FTE Tech Staff

4. May 2005 PFC Coord Comm Planning Mtng, PPPL FY06 PISCES ITER Support (60%) EU-US Collaboration Continuing –ELM Heat Pulse Transient Effect on Mixed Materials (UCSD/IPP-Garching) Continue Be/W & Be/C Interaction Studies –Parametric dependencies, D-retention & removal, mix layer temporal evolution PMI Modeling Validation

5. May 2005 PFC Coord Comm Planning Mtng, PPPL Motivation for PISCES Mixed Materials Studies UC San Diego PISCES and EFDA are investigating the influence of Be plasma impurities on exposed materials interactions relevant to ITER. The ITER design: Be first-wall, W divertor, C (graphite) strike points. Diverted plasma expected to ‘dirty’: Eroded Be impurity conc. up to 10 %. PISCES-B Experiments Simulation This Region

6. May 2005 PFC Coord Comm Planning Mtng, PPPL 45 o Radial plasma transport shield Cooled target assembly - Cooled Mo limiter Resistive heater coils PISCES-B Plasma column Target Deposition coupon 102 mm 153 mm 76 mm Plasma source Magnetic axis Thermo- couple Heatable deposition probe assembly Evaporative Be Impurity seeding PISCES-B Mixed Material ELM Simulations in FY06 (US-EU Collaboration) time V plasma V bias (t) Programmed Waveform Objective: Study Mixed Mat’l Response to Intense Pulsed Heat Flux Transient Heat Flux 4 - 40 MW/m 2

7. May 2005 PFC Coord Comm Planning Mtng, PPPL Plasma conditions:  D ~3x10 18 cm -2 s -1, T e ~ 6eV, n e ~ 10 12 cm -3, T ~500 K, D Ion Fluence ~2x10 22 cm -2 No Be seeding  m = - 62 mg ATJ graphite Not exposed ~0.1 % Be seeding  m = - 5 mg AES - 85 % Be, 10% O & 5% C PISCES Will Study Temporal Evolution of Be/C & Be/W Surfaces in FY06 Objective: Understand Surface Coverage & Be Alloying

8. May 2005 PFC Coord Comm Planning Mtng, PPPL 6 Studies of Be Sputtering Yield v. Exit Angle in FY06 Be target (~ 2.1 cm dia.) z y or r  Be 5-6 cm B z = 152 mm Geometry Abel Invert To get (r,z) Dependence Spatially Resolved Be-I & Be-II Measurements Possible  Study Be Ion Transport

9. May 2005 PFC Coord Comm Planning Mtng, PPPL 7 WBC monte carlo code simulation (by J.N. Brooks) assumed cosine angular distribution. Identify Physics that Leads to Difference Between Model & Expt And Incorporate in Model (If Needed) In experiments, n Be does not become small at large angle (  > 60 deg.). At larger d, the distribution becomes closer to cosine distribution for point source. Deviation from cosine distribution? Strong diffusion? --

10. May 2005 PFC Coord Comm Planning Mtng, PPPL FY06 Enabling PMI Physics & Technology Plans IR-Absorption Spectroscopy for C x D y Concentration Measurements Basic Erosion Studies for Model Validation Measure Edge/SOL Transport & Flows w/ Time-resolved Imaging Diagnostic Source Technologies for New Physics Simulations

11. May 2005 PFC Coord Comm Planning Mtng, PPPL Molecular Infra-red Absorption (MIRA) Diagnostic for Carbon Chemical Erosion Studies Choose IR for resonant molecular interaction Use lock-in to increase SNR Study CxDy radical formation & transport in front of divertor plate mat’l Objective: Link CD Radical Concentration with CD4 Production & Then Use Result for Tokamak Divertor Physics

12. May 2005 PFC Coord Comm Planning Mtng, PPPL Basic Studies of Material Erosion: Carbon Cluster Ejection into Noble Gas Plasma Carbon Target Plasma source V bias Ionizer QMS Experimental Geometry QMS Target C 2 Cluster Energy Spectrum C 2 Dimer Y(  ) C 3 Trimer Y(  )

13. May 2005 PFC Coord Comm Planning Mtng, PPPL Edge and SOL Physics in FY06 Objective: Develop Measurement of Large-scale Edge/SOL Flows to Understand Erosion/Redep/Retention in SOL/Divertor End-on View of Plasma In Linear Plasma Device Infer Propagation Speed From Time-delay Scheme & Validate w/ ExB Drift Probe Measurements… …Then Apply to Large-Scale Fast-Framing Images of Tokamak Edge/SOL to find Plasma Flowfield

14. May 2005 PFC Coord Comm Planning Mtng, PPPL Other Topics for FY06 Transient Effects on Gas Target Divertor Birth Mechanism for “Blobs” Advanced Edge Turbulence Analysis Technique Development

15. May 2005 PFC Coord Comm Planning Mtng, PPPL FY06 Program Elements & Balance ITER Support (60%) –5 Science FTE/4 Tech Staff Enabling PMI Physics & Technology (30%) –3 Science FTE/0.5 FTE Tech Staff/4 Grad- Students ALPS Support (10%) –0.5 Science FTE/0.5 FTE Tech Staff