Health Physicist

Albuquerque, New Mexicofull timeRemote

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Fuse The Health Physicist at Fuse leads the technical radiation-protection program, including shielding, instrumentation, dosimetry, and operational safety decisions. This hands-on role involves verifying shielding designs, running transport calculations, and managing radiological surveys and clearance procedures.

Responsibilities

You are the lead Health Physicist on site, responsible for the technical radiation-protection program: source terms, shielding, instrumentation, dosimetry, surveys, and the operational decisions that flow from them. This is a hands-on lead role.
Core Responsibilities
Independently verify shielding designs developed by physics and engineering — geometry, source definition, tally choice, variance reduction, and uncertainty. Catch the errors before the concrete is poured.
Run MCNP, PHITS, or GEANT4 transport calculations for the fusion generators, target chambers, beamlines, diagnostic ports, and shielded penetrations.
Build and maintain validated source-term models: D-T neutron yield and spectrum, capture and inelastic gammas, bremsstrahlung, and characteristic line emission.
Perform activation analysis on hardware in the neutron field and produce contact dose-rate vs. cool-down curves that operations can plan around.
Dosimetry & Instrumentation
Specify the radiological instrument fleet from first principles. Match detector physics to field characteristics: pulsed vs. continuous response, neutron energy range, photon discrimination, deadtime behavior, and true dose-equivalent response across the spectrum we produce.
Select personal dosimetry technology appropriate for mixed neutron/photon fields and tritium-intake monitoring.
Be responsible for the calibration program for high-end instruments to a standard that survives regulator review.
Operational Release & Clearance
Be the technical authority on whether hardware and areas are safe to touch or enter. Survey activated and potentially contaminated hardware, evaluate against release criteria, and document the basis.

Qualification

Master's degree in Health PhysicsGive a shitTake responsibility

Required

Master's degree in Health Physics, Nuclear Engineering, Radiological Sciences, Physics, or a related field.
Certification by the American Board of Health Physics (CHP). Fuse will support maintenance of certification status.
5+ years of operational health physics experience in environments with non-trivial neutron and photon fields, with at least 2 years in a tritium-handling environment.
Demonstrated production-grade proficiency with at least one major transport code: MCNP, MCNPX, PHITS, GEANT4, or FLUKA.
Working knowledge of 10 CFR 835 or 10 CFR 20, DOE-STD-1098, DOE-HDBK-1129, and 20.3 NMAC.
Hands-on experience with tritium bioassay programs, internal-dose assessment, and ICRP biokinetic models for HTO.
Experience leading activation analysis and authoring defensible "safe to handle" decisions on activated hardware.

Preferred

Experience with pulsed radiation sources such as DPF, Z-pinch, ICF drivers, or pulsed accelerators and the dosimetry challenges they create.
Prior role specifying or commissioning a radiation-instrument fleet for a new facility.
Track record partnering with R&D physicists and engineers as a working collaborator, not a downstream reviewer.
Prior responsibility for DoD/DOE environmental monitoring programs and safety protocols.
Experience integrating radiation controls with non-radiological hazards including HV, vacuum, cryogenics, and lasers, and with broader EHS systems.
Familiarity with PDM/PLM and document-control practices, including change control for procedures and drawings.
Give a shit. Build things you're proud of.
Take responsibility. If something is broken and you can fix it, fix it. See things through.

Benefits

Dental
Vision
PTO

Company

Fuse

View company page

Source: ashby

Active within the past hour

Remote-friendly

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MCNPPHITSGEANT4radiation protectiondosimetryactivation analysis

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Health Physicist at Fuse · LumiJobs