Evaluation of redeposited tungsten microstructure and evolution under transient loading

FuseNet Association; Eindhoven; Hybrid; EUR 5,600 - 8,400; Full time

Benefits offered by this job

Access to Magnum-PSI facilities

Mentorship and project supervision

Free coffee

Job summary

Dutch Institute for Fundamental Energy Research (DIFFER) in the Netherlands invites a Master student to join a project on the evaluation of redeposited tungsten microstructure under transient loading. You will operate at DIFFER facilities such as Magnum-PSI, performing nano-indentation and SEM analyses to understand material behavior under plasma-relevant conditions.

The internship emphasizes hands-on research supervision, collaboration within a multidisciplinary team, and the opportunity to

Qualifications

• Must be enrolled in a Master’s program in a relevant field.
• Experience with microstructure characterization is desirable.
• Strong analytical and communication skills.

Responsibilities

• Study redeposited tungsten microstructure using MagNUM-PSI and associated techniques.
• Assess thermomechanical response of redeposited layers to thermal transients.
• Prepare findings and contribute to project reports and presentations.

Skills

Microstructure analysis

Data analysis

Research experience

Education

Master's student in materials science/engineering

Tools

Nano-indentation

Scanning electron microscopy

Job description

Evaluation of redeposited tungsten microstructure and evolution under transient loading

Introduction

Inthedivertorofreactor-classtokamakssuchasITERandDEMO understandingthesputteringandre-depositioniscritical.Tungstencanbetoleratedinonlyverysmallquantitiesintheplasmacorebefore fusionpowerisdegraded.Tungstenwillbeerodedbythefuelionsandimpurities,butduetoitslargeLarmorradiusislikelytobelocally(promptly)re-deposited.Inconditionswheretheplasmaisalso highdensityre-depositioncanalsooccurduetofrictionbetweenthesputteredtungstenandtheions.Recent resultsinMagnum-PSIexperiments haveindicatedthat there-depositedtungsten canformalayerwithdifferent microstructure and properties than the bulk tungsten. Such a layer could be at risk of delamination and flaking into the core plasma, which could cause a disruption. This project aims to furtherunderstand the re-deposition process and the properties of the re-deposited material.

YourProject

UsingMagnum-PSIyouwillstudythesputteringandre-depositionoftungsteninhigh-densityplasmas.There-depositedmaterialwillbecharacterizedusing,forexample,nano-indentationandscanningelectron microscopy. You will study the thermomechanical response of the re-deposited layers to thermaltransients to investigate how they behave under representative loading. This will give important information about the expected formation and performance of the re-deposited tungsten layers.

What we offer

• Access to top class facilities and instrumentation at DIFFER like Magnum-PSI and the Ion BeamFacility
• Supervisionandguidancethataimstosupportyouwhilelettingyoubeinchargeofthe project
• APMIgroupteamofenthusiasticandknowledgeable studentsaroundyou
• Limitlessfree coffee!

Evaluation of redeposited tungsten microstructure and evolution under transient loading

Position Type

Master internship

Host institute type

Research Institute

Host institute

Dutch Institute for Fundamental Energy Research (DIFFER), The Netherlands