Book of Abstracts Contents P1: POSTER SESSION 1 .................................................................................................... 14 ID323: 2D-distribution of Deuterium Retention in Tungsten Sample Using Laser Induced Desorption- Quadrupole Mass Spectroscopy ..................................................................................................................... 14 ID161: A mechanism-based multi-scale framework for understanding irradiation hardening of tungsten ..... 15 ID344: An in situ Laser-Induced Breakdown Spectroscopy Diagnostic System for Elemental Analysis on Tungsten Divertor in EAST .............................................................................................................................. 16 ID203: Atomic simulation of the interaction between dislocation loops and vacancy-type defects in tungsten ....................................................................................................................................................................... 17 ID336: Co-deposition of deuterium with metals by plasma-assisted laser ablation ........................................ 18 ID263: Particle control in long-pulse discharge using divertor pumping in LHD .............................................. 19 ID307: Study on Heat Removal Capacity of Flat heat sink with AI method and Qualification assessment of rectangular-shape mono-block PFC ................................................................................................................ 20 ID346: Investigation of remaining tritium in the first wall in LHD using directional material probes .............. 21 ID257: Fabricating tritium permeation barrier for PFC with a new non-coating strategy ................................ 22 ID310: Two-phase pressure drop Analysis of swirl tube in one-side high heat load condition for Plasma Facing Component Application ................................................................................................................................. 23 ID106: Thermal loading test of a Wendelstein 7-X pumping gap panel ........................................................... 24 ID366: W2C-reinforced tungsten: a promising candidate for DEMO divertor material ................................... 25 ID293: Tungsten-titanium composites and FGMs prepared by plasma transferred arc cladding..................... 26 ID355: Development of a Novel DEMO Divertor Target: Spiral Plate Module ................................................. 27 ID241: Surface blistering on damaged tungsten with deuterium plasma exposure under various conditions 28 ID248: Electron Impact Ionization cross sections of C4H4O ............................................................................ 29 ID262: Optical properties of metals submitted to tokamak conditions .......................................................... 30 ID143: Post-mortem Dust Morphology and Composition Analysis by Micro-CT and Micro-XRF ..................... 31 ID274: First-principles study of hydrogen isotopes solubility and diffusion in beryllium oxide ....................... 32 ID184: Study of Tungsten Divertor Mock-Ups Under Steady-State Plasma Loads in PLM Plasma Device ........ 33 ID351: Materials assessment and modelling for plasma-facing space systems: SUPREME and MEESST ......... 34 ID324: Sputtering of a Beryllium Target by Deuterium Atoms ........................................................................ 35 ID335: Distribution of Nitrogen and Trace Isotopes on Wall Material of JET-ILW ........................................... 36 17.05.2021 (v1.1) 2 S1: ADVANCED PLASMA FACING COMPONENTS .................................................... 37 ID116: The quest for a durable high-heat-flux component: requirements and issues ..................................... 37 ID208: Plasma facing material and component design options for STEP ......................................................... 38 ID223: First step in the definition of a systematic evaluation procedure for DEMO high flux divertor target qualification. .................................................................................................................................................. 39 ID192: Thermal Shock Behavior Under Deuterium Plasma Exposure of Tungsten–Tantalum Alloys ............... 40 S2: TUNGSTEN MATERIALS ............................................................................................ 41 ID151: Thermal Stability of the Microstructure in Tungsten-based Materials for Fusion Applications ............ 41 ID332: Retarded recrystallization of tungsten - influence of deuterium plasma and plasma impurities ......... 42 ID306: Limiter temperature and runaway electron losses after D2 SPI in JET ................................................. 43 ID131: Predicting tungsten erosion and leakage properties for the new V-shaped Small Angle Slot divertor in DIII-D .............................................................................................................................................................. 44 S3: COMPOSITE MATERIALS & CHARACTERISATION ........................................... 45 ID149: Characterization and upscaling of Wf/W for use in fusion devices ...................................................... 45 ID353: Development of plasma-facing material joints and composites for neutron irradiation in the FRONTIER US-Japan collaboration .................................................................................................................................. 46 ID270: High heat flux testing of tungsten fibre-reinforced composites ........................................................... 47 ID272: Numerical optimization of W-Cu FGM material distributions for minimal stresses in bevelled ITER monoblocks .................................................................................................................................................... 48 P2: POSTER SESSION 2 .................................................................................................... 49 ID155: Additively Manufactured Tungsten Samples for DIII-D DiMES Experiments ........................................ 49 ID174: B segregation and effect on H energetics near tungsten surfaces: A first-principles study .................. 50 ID266: Calibration Procedure for Preconditioning 2D-Profiles from Atomic Force Microscopy for Data Driven Model Discovery ............................................................................................................................................ 51 ID273: The isotope effect on the density limit in JET-ILW L-mode plasmas ..................................................... 52 ID147: Plasma-surface interaction studies on TOMAS by means of a new sample load lock system .............. 53 ID204: First results on the manufacturing of W/steel composites using plasma spraying under inert atmosphere .................................................................................................................................................... 54 ID202: Helium Effects on the Surface and Subsurface Evolutions in Single-Crystalline Tungsten .................... 55 ID171: B4C as protective coating for carbon and tungsten under intensive ion irradiation ............................ 56 ID150: Development of flexible filler ribbons by melt spinning for joining W to CuCrZr material for heat sink application ..................................................................................................................................................... 57 17.05.2021 (v1.1) 3 ID118: Manufacturing W/EUROFER functionally graded coatings for plasma facing components: First results from technology transfer to industry ............................................................................................................. 58 ID362: Miniature mechanical testing of candidate fusion material joints and composites ............................. 59 ID250: Plasma Facing Components with Magnetohydrodynamic Coolant Drive ............................................. 60 ID158: Thermal gradient effect on helium and intrinsic defect transport in tungsten .................................... 61 ID268: Modeling Microstructural Effects on the Mechanical Behavior and Damage Development in Ductile- Phase Toughened Tungsten Composites ........................................................................................................ 62 ID326: The effect of a well-defined tungsten oxide layer on deuterium retention and release: a single crystal approach for macroscopic rate equations modeling ....................................................................................... 63 ID232: A new control strategy for optimizing the absorption/retention process of gases in W thin layers ..... 64 ID278: Lithium Capillary Porous System Tests with Steady-State Plasma in PLM Plasma Device .................... 65 ID110: Design window for open-surface lithium divertor with helium-cooled substrate ................................ 66 ID211: Microstructure and D, He retention in Be exposed to D2 and D2-He plasmas in PISCES-B ................... 67 P3: POSTER SESSION 3 .................................................................................................... 68 ID217: Characteristics of Arc Erosion on Tungsten Surface Covered by Lithium and Silicon Coatings ............. 68 ID193: Comparing deuterium retention in heavy ion damaged tungsten measured by GD-OES, NRA and TDS 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