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The Apex monthly · vol. 3 · 2025-08-01

Tokamak MHD, an open-source CLI, and the first international deployment

Tokamak MHD equilibrium solver landed in /v1/simulate. The simos CLI went open-source. First international VPC deployment in EMEA.

fusionopensourceinternational
From the desk of Apex research + engineering

Two-minute read; links to the underlying papers, model cards and case studies inline.

01 · Research progress

Tokamak MHD equilibrium solver landed in /v1/simulate. ITER-class geometries now solve in production. Coupled divertor thermal and breeding-blanket neutronics in preview.

02 · Customer wins

First international VPC deployment in EMEA went live. Customer is a fusion-energy programme. Sovereign-equivalent topology under a non-US partner cloud.

03 · Model-card diffs

The simos CLI is now open source under Apache 2.0. Repo at github.com/apex-dev/simos-cli.

04 · An open question

What does a 'sovereign-equivalent' deployment mean to your team in a non-US context? Reply.

05 · What we read
  • (1) Fusion-energy programmes in EMEA — external.
  • (2) On tokamak MHD equilibrium — Conti.
  • (3) Why we open-sourced the CLI — engineering.
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