The complete Digital Twin
The Digital Twin LINAC that creates machine intelligence.
Linax's premier product. Match your linear accelerator to a continuously updated virtual twin — and manage every stage from installation and commissioning, through QA, to lifecycle management.
SIMAC Digital Twin turns routine QA data into a continuously updated virtual representation of your machine — so you understand what dose it will deliver today, not what it delivered during commissioning. Unlike systems that simply log measurements and tolerances, it converts machine behavior into actionable intelligence for physicists, service teams, and clinical leaders.
Four modules, one workflow
The Digital Twin brings together the full SIMAC toolset — combine them into the workflow your team needs.
Machine Config, Service Mode, and the Scanning and Calibration Water Tanks — the base product everything else builds on.
Import real linac QA data over the TotalQA® API and match the beam model to today’s machine.
The commissioning water tank — a configurable model matched to your linac. Coming soon.
See dose distribution effects. Standard today; Advanced with VMAT and CT DICOM import coming soon.
All four run on the shared, patent-pending SIMAC Beam Model. The Digital Twin bundles the commissioning-grade tiers: the Service Edition of SIMAC Machine, the commissioning water tank, and SIMAC Dose Calculation. Sold per machine, per beam model.
The workflow
The four modules run as one loop. Every pass makes your Digital Twin more current.
SIMAC Quality Assurance pulls your real linac QA data in over the TotalQA® API.
The beam model is matched in SIMAC Machine to what the machine is outputting now, not its commissioning baseline.
Change parameters and see the effect — in dose space with SIMAC Dose Calculation, in beam space with the Water Tank in SIMAC Machine.
Matches expectation? Keep treating. If not, trace the drift back to the subsystem behind it in SIMAC Machine.
What the twin makes possible
Capabilities that tolerance tables alone can't provide.
Recalculate the plan under review against today's machine state — independent of, and without touching, the commissioned TPS model.
A single, clinically meaningful metric: the difference between the planned dose and the dose your machine would deliver right now.
Determine which physical changes — steering, target, magnet, gantry sag — best explain the measured data, for a dynamic, dose-aware FMEA.
Every routine measurement refines the Digital Twin. Re-validate after a service event in minutes — no full recommissioning needed.
Full beam characterization across all field sizes and depths — including small fields that are hard to measure — from partial scans.
Preserve the machine knowledge that retires with your senior physicists and engineers as a living, queryable model.
What it does — and doesn't do today
The Digital Twin is the sum of its modules — so it inherits both their strengths and their current limits. Check each module's datasheet for the detail behind these.
- ›Continuously updates a physics-based machine model from routine QA
- ›Combines Machine, QA, Water Tank, and Dose Calculation in one workflow
- ›Supports root-cause analysis and TG-100 risk assessment
- ›Operates independently of your commissioned TPS beam model
- ›Photon beams only — electron beams not yet available
- ›Beamline-focused: MLC, imaging, and full machine electronics not modelled
- ›The commissioning water tank and Advanced Dose Calculation (VMAT, CT DICOM) are coming soon
- ›See the Machine, QA, Water Tank and Dose Calculation pages for the full detail
SIMAC Machine is the base product.
Start with SIMAC Machine — the virtual linac matched to your accelerator. Add the commissioning water tank, Quality Assurance, or Dose Calculation individually, or take all of them together as SIMAC Digital Twin.
Two product families, one platform.
SIMAC Training products teach the machine — every one of them includes SIMAC Learning and SIMAC Machine or free SIMAC access.
SIMAC Digital Twin is all four clinical modules together, matched to your machine — sold per machine, per beam model.
Includes SIMAC Learning + SIMAC Machine or free SIMAC access
You are here — all four modules, bought as one bundle
SIMAC Machine (Service Edition), SIMAC Quality Assurance with TotalQA® import, the commissioning water tank, and SIMAC Dose Calculation — all on the shared SIMAC Beam Model.
Your treatment planning system or your QA program. It runs independently of the commissioned TPS model and interprets the QA you already collect.