Book/Dissertation / PhD Thesis

FZJ-2021-03035

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Cyclotron Irradiation on Tungsten & Co-relation of Thermo-Mechanical Properties to Displacement and Transmutation Damage

Rayaprolu, R. (Corresponding author)FZJ*

2020
Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag Jülich
ISBN: 978-3-95806-552-9

Please use a persistent id in citations: http://hdl.handle.net/2128/28395  urn:nbn:de:0001-2021080438

Abstract: Neutron damage is a major deciding factor in the commercialisation of a fusion power plant.Neutron damage inflicted on the walls of the reactor during operation, leads to changes in thebehaviour ofmaterials and ultimately decides the life time of the component. Consequently,it is essential that fusion relevant materials are tested under fusion irradiation conditions inorder to qualify them, prior to use. Tungsten is a keymaterial for the plasma facing componentin a fusion reactor, and is located directly in the path of high energy fusion neutrons. Currently,it is not possible to test the change inmaterial behaviour under high energy neutrons as thereexits no high flux fusion neutron source. Moreover, high flux fission reactors are unable tore produce the high energy neutron damage. However, this work demonstrates the use of 30MeV protons to induce fusion relevant neutron damage on tungsten.This work involves the first irradiation of tungsten using high energy protons (30MeV). Acomplete irradiation cycle, including irradiation planning, sample design and manufacturing,polishing, irradiation, the setting up of post irradiation devices and post irradiation investigationwas carried out within the scope of this work. Optimal sample geometry for acceleratorirradiations, which is also directly comparable and compatible with fission reactor irradiations,was manufactured. The sample holder was designed such that in-situ temperaturemeasurements were possible for the first time. Additionally, hot cell and remote handlingconforming, punch and indentation testing have been developed and demonstrated throughthe use of irradiated active samples.

Note: Dissertation, RWTH Aachen University, 2021

---

Contributing Institute(s):

1. Plasmaphysik (IEK-4)

Research Program(s):

1. 134 - Plasma-Wand-Wechselwirkung (POF4-134) (POF4-134)

Appears in the scientific report 2021

---

Database coverage:
;

---