Plasma Scenario Developer / Physicist

18 Jan 2019
15 Feb 2019
Bluetown Online
Contract Type
Full Time
Job Title: Plasma Scenario Developer

Location: Milton Park, Oxfordshire, UK

Salary: Competitive

Job Type: Full Time, Permanent

They are a privately funded company with a mission to deliver a faster route to fusion power. Founded in 2009, they’re developing efficient and compact fusion reactors based on two emerging technologies: spherical tokamaks (STs) and magnets made from high temperature superconductors (HTS).

The company is currently developing two main areas in parallel – research into high field spherical tokamak physics and engineering on their latest device, ST40; and a HTS magnet development programme that will culminate in the demonstration of a high field tokamak magnet system. Following successful completion of these projects the technologies development and understanding gained will be combined to deliver the world’s first fully functioning fusion reactor targeting fusion energy gain and industrial scale power production – ST-F1.

The Role:

Spherical tokamaks (STs) have several beneficial features that make them an attractive option for commercial power production. The compressed shape of STs allows them to simultaneously operate with high self-driven bootstrap current fractions and high betas, the ratio of plasma to magnetic pressure. These features reduce the recirculating power and the required magnetic volume, both of which significantly improve the economics of fusion power. There is also strong evidence that energy confinement is STs has a stronger favourable dependence on toroidal field that’s observed at conventional aspect ratio. This improved confinement may allow high field ST power plants to be made even more compact.

They are looking for a plasma physicist to develop and optimise operating scenarios that take full advantage of the favourable properties of high field STs.

This role will include:

* Optimising scenarios to improve performance,
* Modelling fully non-inductive scenarios with high bootstrap fractions;
* Modeling the core and edge plasma regions;
* Developing plasma current start-up and ramp-up schemes that are compatible with HTS tokamaks;
* Optimising for improved stability and high performance;
* Developing predominately RF heated regimes.
* Modelling for both current and future devices.

The successful candidate will also work closely with the Company’s collaborators to understand and incorporate results from relevant experiments.

Main Responsibilities:

* Responsible for the Company’s in-house scenario development capabilities
* Scenario modelling to optimise performance of the Company’s current machine, ST40
* Part of the concept design team for the world’s first HTS high field spherical tokamak, ST-F1

Contacts and communication

* Reports to the Physics Team Leader
* Communicating results and their implications to the wider team

Key Requirements:

* PhD in plasma physics or fusion related field, or equivalent experience
* Several years’ experience modelling tokamak plasmas using transport/equilibrium/stability codes
* Demonstrated ability to work effectively in a multi-disciplinary team of scientists and engineers
* Organised approach to overcoming complex challenges


* 25 Days Holiday, pro rata (plus bank holidays)
* Company Pension scheme
* Eligible for company share option scheme after one years’ service
* Company bonus scheme, discretionary, dependent on performance
* Private medical insurance after 3 months’ service

Candidates with experience of: Plasma Physicist, Graduate, Nuclear Systems Developer, Modelling Engineer, Physics Graduate, PHD Graduate, Plasma Scenario Designer, Plasma Simulation Developer, Scheme Developer may also be considered for the role.