imcar 1.0.1

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iMCAr: The interactive MCA recorder

This software provides a user-friendly application to use Multi-Channel Analyzers (MCA).

Contributing

If you e.g. develop your own drivers for iMCAr or extend the application in a different way, consider contributing the code back to this repository through a Pull Request! There is no guarantee that the changes are merged since they may go into a different direction than the original aim of the software, so before implementing a large change consider opening an issue suggesting that feature so it can be discussed beforehand.

SAFETY NOTE

This software is not developed for usage in medical or other high precision environments. It does implement data recovery after application crashes, however that may not be perfect.
If you can, please run this software through a terminal so you can report stack traces of crashes on GitHub if you encounter a crash. Be careful!

Installation

For this software Python has to be installed and part of the PATH variable. The software is tested with Python 3.8.2. The Windows installer wizard asks at the beginning, if it should edit the PATH. Possibly at the end of the installation the adjustment of its length has to be accepted.

Many Linux distributions ship Python 3 as "python3" with "pip3" (opposed to "python" and "pip"). If that does not work, the commands have to be entered without the number 3.

After downloading the application, in the folder with this README.md file the following commands have to be executed:

pip3 install --upgrade setuptools
python3 setup.py install

You now can already start the software. To add your device to the software, open the documentation by either clicking the "➕" sign next to the device list.

Uninstallation

pip3 uninstall imcar

Start

After installation the program can be launched with the command

imcar

. To add a desktop shortcut, the location of the launcher can be found with where imcar (Windows) or whereis imcar (Linux/Unix). An icon is included in form of the file imcar/gui/icon.ico.

Warning: This only works if no virtual environment (e.g. via Anaconda) is used. For Anaconda3 under Windows, a solution would be to right click on the on the desktop shortcut, go to the 'Shortcut' tab and change "Start in" to C:\Users\<username>\Anaconda3\Library\bin or the equivalent path in your installation.

Troubleshooting

If the application does not launch, executing

sudo pip3 uninstall pyqt5-sip pyqt5 pyqtwebengine
sudo pip3 install pyqtwebengine

may solve the problem. The reason is that pyqt5-sip has to be installed BEFORE pyqt5. Also, both have to be installed in the same directory (sudo pip3 and pip3 must not be mixed). The installer of PyQtWebEngine installs everything in the right order, so the problem can be solved by uninstalling everything and purely executing the latest installer.

License

If not stated otherwise in the corresponding files, source code is distributed unter the GPLv3 license. This is at the moment required since this library uses the free version of PyQt5.

Dependencies

The following requirements are automatically installed if the recommended setup.py is used.

NumPy: https://www.numpy.org/
Matplotlib: https://matplotlib.org/
SciPy: https://www.scipy.org/
Uncertainties: https://pythonhosted.org/uncertainties/
PyUSB: https://pyusb.github.io/pyusb/
PyQt5: https://www.riverbankcomputing.com/software/pyqt/
PyQTGraph: http://www.pyqtgraph.org/
Markdown2: https://github.com/trentm/python-markdown2
faultguard: https://github.com/2xB/faultguard

faultguard was initially developed for this project.

Currently supported MCAs

As a design principle, this software has no dependencies to binaries from third partys such as MCA manufacturers. This allows the software to be platform independent and open source, but also makes it necessary to reverse engineer every MCA USB protocol for every supported product. If you are a vendor or want to contribute out of other reasons, please get in touch by e.g. creating an github issue with your contact address.

Name	Vendor ID	Product ID	Data Transfer Type	Notes
CAEN N957 8K MCA	0x0547	0x1002	Eventwise channel IDs	Reading first 8064 channels [1]

Notes

[1] The last channels are ignored since they can be invalid depending on internal settings.

Credits

Funding: Institute for Nuclear Physics, University of Münster, Germany