Experimental Plasma Physics - Postdoctoral Researcher

We have an opening for a Postdoctoral Researcher in the field of edge plasma physics for magnetic fusion devices. You will apply expertise in diagnostic design, construction, calibration, operation, and interpretation in collaboration with engineering and experimental teams with the goal to understand challenges with power handling in magnetic fusion devices. The research aims to implement advanced infrared diagnostics and techniques for measurements of temperature and heat flux inside the SPARC tokamak under construction by Commonwealth Fusion Systems, as well as infrared characterization of in-vessel materials to aide in in-vessel infrared interpretation. The work involves planning and integration of the diagnostic into tokamak systems in collaboration with CFS staff, complementing other visible and infrared diagnostics on the machine, as well as operation of advanced characterization tools in a laboratory environment. Regular interaction and close coordination with CFS technical/engineering and scientific staff in a fast-paced environment, and supported by LLNL staff on the project. This position is in the Magnetic Fusion Energy Spherical Tokamaks group, Fusion Energy Sciences Section of the Physics Division. The primary work location will be at Commonwealth Fusion Systems in Devens, Massachusetts.

This position requires full-time on-site presence due to the nature of the work.

You will 

• Conduct research in the area of edge plasma and plasma-surface interaction physics.
• Work as a team member to design, construct, calibrate, operate, and interpret edge plasma diagnostics.
• Analyze data to contribute to validation of theoretical models and simulations for fusion devices.
• Document and publish research results in peer reviewed scientific or technical journals and present results at external conferences, seminars and/or technical meetings.
• Pursue independent (but complementary) research interests and interact with a broad spectrum of scientists and engineers internally and externally.
• Perform other duties as assigned.

• Work must be performed by a U.S. person (e.g., U.S. citizen or permanent resident and certain others). Also, assignments longer than 179 days require a federal background investigation.
• PhD in plasma physics or engineering or related field.
• Knowledge of basic plasma physics.
• Experience in experimental measurements in plasma devices.
• Documented publication record in peer reviewed literature and experience presenting research results to a large audience.
• Experience carrying out independent research and work effectively in a multidisciplinary team.
• Proficient verbal and written communication skills necessary to work in a multidisciplinary team environment, author technical and scientific reports and publications, and deliver scientific presentations.
• Experience working independently and in a team environment to achieve program goals in a timely fashion.

Qualifications We Desire

• Knowledge of edge plasmas in fusion devices.
• Experience with diagnostic hardware design and implementation in a scientific setting.
• Experience with data analysis programming languages, such as Python and IDL.
• Familiarity with imaging and spectroscopic edge plasma diagnostic techniques.
• Experience with infrared cameras and optics.

Pay Range

$123,048 Annually

This is the lowest to highest salary we in good faith believe we would pay for this role at the time of this posting.  An employee’s position within the salary range will be based on several factors including, but not limited to, specific competencies, relevant education, qualifications, certifications, experience, skills, seniority, geographic location, performance, and business or organizational needs.

#LI-Onsite

Position Information

This is a Postdoctoral appointment with the possibility of extension to a maximum of three years, open to those who have been awarded a PhD at time of hire date.

Why Lawrence Livermore National Laboratory?

• Included in 2026 Best Places to Work by Glassdoor!
• Flexible Benefits Package
• 401(k)
• Relocation Assistance
• Education Reimbursement Program
• Flexible schedules (*depending on project needs)
• Our values - visit https://www.llnl.gov/inclusion/our-values

Security Clearance

None required.  However, this position involves U.S. Export Control; this work must be performed by a U.S. person (U.S. citizen, U.S. lawful permanent resident, U.S. national, or U.S. protected individual (e.g., refugee, asylee)).

If your assignment is longer than 179 days cumulatively within a calendar year, you must go through the Personal Identity Verification process.  This process includes completing an online background investigation form and receiving approval of the background check.  (This process does not apply to foreign nationals.)

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External applicant(s) selected for this position must pass a post-offer, pre-employment drug test. This includes testing for use of marijuana as Federal Law applies to us as a Federal Contractor.

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