Dealing with this stream of exhaust particles is one of the biggest challenges in realizing clean, safe, and affordable commercial fusion power
Achieving higher power densities in fusion reactors requires the development of as-yet-unknown materials or confinement concepts, due to the high heat fluxes which would occur at the plasma-facing components of the reactor. The first goal has been to reach what's called the break-even condition, which occurs when the amount of energy used to heat up the plasma is equal to the amount of energy that is produced by the fusion reaction. I will focus now on three specific areas where materials impact fusion reactor design: the plasma-facing region, where there is high heat flux and particles are impacting the metal structure; the plasma-diagnostic, heating, and magnet systems; and the structure of the blanket and first-wall region surrounding the plasma, which is the heart of the heat-extraction system. If you look at the sputtering behavior of various materials at fusion-relevant conditions (10-1,000 eV hydrogen ion energies), stainless steel is one of the worst possible plasma-facing materials.
The new solution was made possible by an innovative approach to compact fusion reactors, using high-temperature superconducting magnets.
by AF Rowcliffe · 2017 · Cited by 81 — Although research reactors such as HFIR are often used for materials tests, these fission-based materials test reactors expose materials to significantly more.
There are dozens of unstated engineering problems that need to be solved before fusion can be commercially successful at scale.
The sun, along with all other stars, is powered by a reaction called nuclear fusion. Today, we know that the sun, along with all other stars, is powered by a reaction called nuclear fusion. The amount of energy produced from fusion is very large — four times as much as nuclear fission reactions — and fusion reactions can be the basis of future fusion power reactors. On earth, we need temperatures exceeding 100 million degrees Celsius and intense pressure to make deuterium and tritium fuse, and sufficient confinement to hold the plasma and maintain the fusion reaction long enough for a net power gain, i.e. the ratio of the fusion power produced to the power used to heat the plasma. At the second United Nations International Conference on the Peaceful Uses of Atomic Energy, held in 1958 in Geneva, Switzerland, scientists unveiled nuclear fusion research to the world. The first international IAEA Fusion Energy Conference was held in 1961 and, since 1974, the IAEA convenes a conference every two years to foster discussion on developments and achievements in the field.
by AF Rowcliffe · 2018 · Cited by 27 — This paper emphasizes the critical need to test materials in their full-size component form and in the complete fusion environment of a fusion core.
In the USA, at Princeton Plasma Physics Laboratory, where the first stellarators were built in 1951, construction on the NCSX stellerator was abandoned in 2008 due to cost overruns and lack of funding[2](https://world-nuclear.org/information-library/current-and-future-generation/nuclear-fusion-power#References "See Reference 2")[](https://world-nuclear.org/information-library/current-and-future-generation/nuclear-fusion-power). In the USA, the Tokamak Fusion Test Reactor (TFTR) operated at the Princeton Plasma Physics Laboratory (PPPL) from 1982 to 1997.[d](https://world-nuclear.org/information-library/current-and-future-generation/nuclear-fusion-power#Notes "See Note d")[](https://world-nuclear.org/information-library/current-and-future-generation/nuclear-fusion-power) In December 1993, TFTR became the first magnetic fusion device to perform extensive experiments with plasmas composed of D-T. Using its 192 laser beams, NIF is able to deliver more than 60 times the energy of any previous laser system to its target[e](https://world-nuclear.org/information-library/current-and-future-generation/nuclear-fusion-power#Notes "See Note e")[](https://world-nuclear.org/information-library/current-and-future-generation/nuclear-fusion-power). d. The Princeton Plasma Physics Laboratory has a webpage on TFTR[[Back](https://world-nuclear.org/information-library/current-and-future-generation/nuclear-fusion-power#d "Back")]. 1. Fusion Research: An Energy Option for Europe's Future, Directorate-General for Research, European Commission, 2007 (ISBN: 9279005138) [[Back](https://world-nuclear.org/information-library/current-and-future-generation/nuclear-fusion-power#Notes_of_b "Back")]. 4. LIFE: Clean Energy from Nuclear Waste page on Lawrence Livermore National Laboratory website (www.llnl.gov) [[Back](https://world-nuclear.org/information-library/current-and-future-generation/nuclear-fusion-power#4 "Back")].