ToFScope
Explore, visualize, and analyze FIB ToF-SIMS data.
ToFScope is a local, browser-based application for exploring time-of-flight secondary ion mass spectrometry (ToF-SIMS) data. It allows you to compare mass spectra, ion images, and depth profiles, inspect peaks, and explore signals in three dimensions.

Quick Start
ToFScope can be easily installed from PyPI using uv:
uv tool install tofscopeThat command will put the tofscope executable on your path. Run tofscope to launch the application. By default, ToFScope will only have access to whatever files are in the folder that you launch it from (or any subfolders). You can use the --data-root argument to allow read-only access to another folder (such as a network mount containing your instruments’ data) and the --output-root argument to allow for saving analysis results to a separate folder. For example:
tofscope --data-root /path/to/acquisitions --output-root /path/to/saved-analysesWhen running in this manner, the ToFScope process will run in the terminal and then open the main interface in your default browser (similar to how Jupyter operates). For more detail, see:
- Install and launch: requirements, folder setup, and starting the app.
- Your first analysis: opening a file, comparing signals, and saving your work.
- Troubleshooting: help with startup, file access, and saving.
Feature Guides
| What you want to do | Where to start |
|---|---|
| Exploring an acquisition and comparing ion signals | Signals and views |
| Relating acquisition frames to measured depth | Depth calibration |
| Comparing peaks with isotope candidates | Peak identification |
| Viewing the spatial distribution of signals | 3D visualization |
| Sharing results or resuming an analysis | Saving and exports |
| Understanding the frontend, backend, and files | ToFScope architecture |
For developers and administrators
The developer and administrator guides cover configuration, deployment, building and testing, and maintaining this site.
ToFScope supports TOFWERK TOFexplorer1 HDF5 acquisitions. The file compatibility and limitations guide describes supported workflows and current validation boundaries.
Footnotes
TOFWERK and TOFexplorer are names owned by TOFWERK AG. ToFScope is an independent project and is not affiliated with, endorsed by, or sponsored by TOFWERK AG.↩︎