Sir Steven Charles Cowley (born 1959) is a British theoretical physicist and international authority on

nuclear fusion Nuclear fusion is a nuclear reaction, reaction in which two or more atomic nuclei combine to form a larger nuclei, nuclei/neutrons, neutron by-products. The difference in mass between the reactants and products is manifested as either the rele ...

and astrophysical plasmas. He has served as director of the

United States Department of Energy The United States Department of Energy (DOE) is an executive department of the U.S. federal government that oversees U.S. national energy policy and energy production, the research and development of nuclear power, the military's nuclear w ...

(DOE)

Princeton Plasma Physics Laboratory Princeton Plasma Physics Laboratory (PPPL) is a United States Department of Energy national laboratory for plasma physics and nuclear fusion science. Its primary mission is research into and development of fusion as an energy source. It is know ...

(PPPL) since 1 July 2018. Previously he served as president of

Corpus Christi College, Oxford Corpus Christi College (formally, Corpus Christi College in the University of Oxford; informally abbreviated as Corpus or CCC) is one of the constituent colleges of the University of Oxford in the United Kingdom. Founded in 1517 by Richard Fo ...

, since October 2016. and head of the EURATOM / CCFE Fusion Association and chief executive officer of the

United Kingdom Atomic Energy Authority The United Kingdom Atomic Energy Authority is a UK government research organisation responsible for the development of fusion energy. It is an executive non-departmental public body of the Department for Energy Security and Net Zero (DESNZ). T ...

(UKAEA). He was appointed chair of the board of trustees of the Faraday Institution in July 2024.

Education

Cowley won a scholarship to

and graduated with a

Bachelor of Arts A Bachelor of Arts (abbreviated B.A., BA, A.B. or AB; from the Latin ', ', or ') is the holder of a bachelor's degree awarded for an undergraduate program in the liberal arts, or, in some cases, other disciplines. A Bachelor of Arts deg ...

degree in Physics in 1981. He went on to study at

Princeton University Princeton University is a private university, private Ivy League research university in Princeton, New Jersey, United States. Founded in 1746 in Elizabeth, New Jersey, Elizabeth as the College of New Jersey, Princeton is the List of Colonial ...

as a

Harkness Fellow The Harkness Fellowship (previously known as the Commonwealth Fund Fellowship) is a program run by the Commonwealth Fund of New York City. This fellowship was established to reciprocate the Rhodes Scholarships and enable Fellows from several cou ...

and was awarded a PhD in 1985 for research into

tokamak A tokamak (; ) is a device which uses a powerful magnetic field generated by external magnets to confine plasma (physics), plasma in the shape of an axially symmetrical torus. The tokamak is one of several types of magnetic confinement fusi ...

s supervised by Russell Kulsrud.

Career and research

Following his PhD, Cowley completed

postdoctoral research A postdoctoral fellow, postdoctoral researcher, or simply postdoc, is a person professionally conducting research after the completion of their doctoral studies (typically a PhD). Postdocs most commonly, but not always, have a temporary acade ...

at the Culham Centre for Fusion Energy (CCFE). He returned to Princeton in 1987 and joined the faculty at

University of California, Los Angeles The University of California, Los Angeles (UCLA) is a public university, public Land-grant university, land-grant research university in Los Angeles, California, United States. Its academic roots were established in 1881 as a normal school the ...

(UCLA), in 1993, becoming

full professor Professor (commonly abbreviated as Prof.) is an academic rank at universities and other post-secondary education and research institutions in most countries. Literally, ''professor'' derives from Latin as a 'person who professes'. Professors ...

in 2000. At

Imperial College, London Imperial College London, also known as Imperial, is a Public university, public research university in London, England. Its history began with Prince Albert of Saxe-Coburg and Gotha, Prince Albert, husband of Queen Victoria, who envisioned a Al ...

, Cowley led the

plasma physics Plasma () is a state of matter characterized by the presence of a significant portion of charged particles in any combination of ions or electrons. It is the most abundant form of ordinary matter in the universe, mostly in stars (including th ...

group from 2001 to 2003, while also serving as a part-time professor. He was appointed as the head of the EURATOM / CCFE Fusion Association in September 2008 and as CEO of UKAEA in November 2009. On 18 March 2015, he was elected the 31st President of

, his alma mater: he took up the post on 1 October 2016. He is the first scientist to hold the post. On 1 July 2018, he was appointed director of the

(PPPL). Cowley's research interests are in plasmas and

, in astrophysical plasmas and the laboratory, such as the

Joint European Torus The Joint European Torus (JET) was a magnetically confined plasma physics experiment, located at Culham Centre for Fusion Energy in Oxfordshire, UK. Based on a tokamak design, the fusion research facility was a joint European project with the ...

(JET) and the International Thermonuclear Experimental Reactor (ITER). His research has been funded by

Science and Technology Facilities Council The Science and Technology Facilities Council (STFC) is a United Kingdom government agency that carries out research in science and engineering, and funds UK research in areas including particle physics, nuclear physics, space science and astr ...

(STFC) and the

Engineering and Physical Sciences Research Council The Engineering and Physical Sciences Research Council (EPSRC) is a British UK Research Councils, Research Council that provides government funding for grants to undertake research and postgraduate degrees in engineering and the physical scienc ...

(EPSRC). Cowley co-chaired the

National Academy of Sciences The National Academy of Sciences (NAS) is a United States nonprofit, NGO, non-governmental organization. NAS is part of the National Academies of Sciences, Engineering, and Medicine, along with the National Academy of Engineering (NAE) and the ...

assessment of plasma science in the United States., 2009-12-22

Awards and honours

Cowley was elected a Fellow of the Royal Society (FRS) in 2014. His biography reads; His certificate of election reads: Cowley was also elected a Fellow of the American Physical Society (APS) in 1998, the

Institute of Physics The Institute of Physics (IOP) is a UK-based not-for-profit learned society and professional body that works to advance physics education, physics research, research and applied physics, application. It was founded in 1874 and has a worldwide ...

(FInstP) in 2004 and the

Royal Academy of Engineering The Royal Academy of Engineering (RAEng) is the United Kingdom's national academy of engineering. The Academy was founded in June 1976 as the Fellowship of Engineering with support from Prince Philip, Duke of Edinburgh, who became the first senio ...

(FREng) in 2014. He was awarded and honorary fellowship of the Institute of Engineering and Technology in 2015. In 2011, he was appointed to the UK Government's

Council for Science and Technology The Council for Science and Technology (CST) is an advisory non-departmental public body of the United Kingdom government. Its role is to give advice on issues that cut across government departments to the Prime Minister, the First Minister of ...

. In the 2018 Birthday Honours, Cowley was appointed a

Knight Bachelor The title of Knight Bachelor is the basic rank granted to a man who has been knighted by the monarch but not inducted as a member of one of the organised Order of chivalry, orders of chivalry; it is a part of the Orders, decorations, and medals ...

for services to science and to the development of nuclear fusion. In July 2019, Cowley was awarded the

honorary degree An honorary degree is an academic degree for which a university (or other degree-awarding institution) has waived all of the usual requirements. It is also known by the Latin phrases ''honoris causa'' ("for the sake of the honour") or '' ad hon ...

Doctor of Science A Doctor of Science (; most commonly abbreviated DSc or ScD) is a science doctorate awarded in a number of countries throughout the world. Africa Algeria and Morocco In Algeria, Morocco, Libya and Tunisia, all universities accredited by the s ...

(''honoris causa'') by the

University of Lancaster Lancaster University (officially The University of Lancaster) is a collegiate public university, public research university in Lancaster, Lancashire, England. The university was established in 1964 by royal charter, as one of several new univer ...

for his standing as the international authority on fusion energy.

References

{{DEFAULTSORT:Cowley, Steven 1959 births Living people Fellows of the American Physical Society Fellows of the Institute of Physics Fellows of the Royal Society Fellows of the Royal Academy of Engineering British physicists Alumni of Corpus Christi College, Oxford Harkness Fellows Presidents of Corpus Christi College, Oxford Academics of Imperial College London Princeton University alumni Knights Bachelor Date of birth missing (living people) Princeton Plasma Physics Laboratory people