TG-142 Accelerator QA Workbench

Report-grounded QA review, machine presets, and OpenTOPAS learning scenarios.

This workbench turns TG-142 into an interactive operator surface with local report grounding, QA session tracking, evidence-backed findings, and staged OpenTOPAS beam visualization.

Preview data

Tier 1 authority1 seeded reports

Machine presets1 seeded accelerator beams

QA delta-0.20%

Deterministic Engine

TG-142 QA worksheet

Evaluate a machine QA check against a baseline and tolerance without leaving the report-grounded workbench.

Deviation relation

\Delta = M - B,\qquad \%\Delta = 100\frac{M-B}{B}

Absolute difference-0.200

Percent difference-0.20%

Pass statewithin tolerance

Corpus Registry

Seeded TG-142 lineage

Registry seeded, ingestion not yet run in this session

Document	Tier	Role
Task Group 142 report: Quality assurance of medical accelerators Medical Physics - 2009 - Klein - Task Group 142 report Quality assurance of medical acceleratorsa (1).pdf	1	Primary QA requirements and tolerance authority
AAPM Task Group 198 Report: An implementation guide for TG 142 quality assurance of medical accelerators Medical Physics - 2021 - Hanley - AAPM Task Group 198 Report An implementation guide for TG 142 quality assurance of.pdf	3	Implementation guidance and lineage context

Machine Catalog

Recommended TG-142 presets

Machine	Modality	Preset
Varian TrueBeam 6X Common flattened photon QA reference beam.	photon	TrueBeam 6X water reference

Assistant

Report-grounded TG-142 query

Scope: TG-142 primary sources only.

Grounded summary:

[1] Task Group 142 report, Unlabeled section, pages 1-2: TG-142 defines quality assurance expectations and tolerances for medical accelerators.

Use the cited report text as authority; do not treat this answer as a substitute for protocol review.

Workflow

Create a QA session

OpenTOPAS

Stage a visualization bundle

preview-topas

Varian TrueBeam 6X staged as linac_spectrum for qualitative OpenTOPAS QA visualization.

Source model: linac_spectrum

Download deck

Depth (cm)	Relative dose
0.00	0.300
1.25	0.940
2.50	1.000
10.00	0.770
20.00	0.530