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The Jul 2025 Working Group Meeting
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EIC Virtual Accelerator Working Group, July 2025 Meeting
Presentation
Dr. Tong Zhang presented Fantasy, a Python-based high-level application framework developed at FRIB. It integrates EPICS control, device abstraction, and physics modeling (via the FLAME envelope code), with GUI tools built on PyQt. The system includes a virtual accelerator environment for application development and testing, deployed primarily through VirtualBox appliances.
Discussions
Jean-luc asked about duplication of similar efforts and the potential for community frameworks. Tong noted that while other labs pursue related tools, Fantasy was built to address FRIB-specific needs. Broader adoption would require significant generalization and modularization. Tong indicated that development began in 2017 and required several years of sustained effort, particularly in user requirement gathering and interface design.
Remi asked about adoption among operators, the method of deploymennt (local vs cloud) and usability outside FRIB. Tong emphasized the importance of usability and simplified GUI for hiding the expert-level feature for helping adoption by operator. The cloud based deployment were explored but found too complex for current use. The current code requires EPICS and machine config files. Ji asked about non-EPICs compatibility, Tong mentioned broader reuse would need abstraction of the model and control interface.
Chad asked about FLAME’s capabilities. Tong confirmed it is a linear envelope model, not suitable for high-order effects or loss modeling. Yue added that a Julia-based TPSA model is tested in FRIB to support higher-fidelity simulations.
Auralee asked about code availability and reuse across EPICS-based facilities . The code is available at https://github.com/phantasy-project.
We ran out of time to update the EIC VA progress, which will be reported in August meeting.
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