Development of an EPICS-based control platform for electron beam commissioning at ELI-NP

The ELI-NP (Extreme Light Infrastructure - Nuclear Physics) gamma beam system employs a 234-742 MeV linear accelerator to generate gamma rays via laser-electron interactions. Accelerator operation requires coordinated control of multiple subsystems (RF, vacuum, magnets, diagnostics). During pre-commissioning, we developed an EPICS-based platform to enable equipment debugging and beam tuning simulations before control system completion. The platform integrates both soft IOCs (for device emulation and algorithm validation) and device IOCs (for hardware control). This dual-IOC architecture allows: 1) High-level control software testing without physical hardware, and 2) Physics application interfaces for advanced functionality. The system successfully simulated control operations and supported tuning algorithm development. Testing demonstrated the platform's effectiveness for subsystem debugging and realistic beam tuning simulations. By bridging the gap between hardware availability and control system readiness, the platform is expected to accelerate the commissioning process and enhance the operational efficiency of the ELI-NP gamma beam system in the future.