Speaker
Description
A control and acquisition system for ionization profile monitor (IPM) stations at GSI/FAIR has been implemented and deployed, providing real-time, simultaneous transverse beam characterization in both planes without disturbing the beam. Built on FESA (Front-End Software Architecture), the system uses dedicated classes to manage the cameras, high-voltage control, and digital I/O. Each transverse plane uses an MCP in a chevron configuration with an attached phosphor screen, imaged by a global-shutter GigE camera. Per-frame image correction and noise filtering compensate for detector non-uniformity and degradation while masking defective pixels. Configurable estimators then extract the beam position, beam width, and profile integral from the resulting profiles. Automatic high-voltage reduction protects the detector under overload conditions. Acquisition is synchronized with the accelerator cycle via a White Rabbit timing receiver, supporting frame rates of up to 300 fps. Acquired images and computed profiles are saved per machine cycle in an XML-based format. A JavaFX operator interface provides guided setup, live visualization with historical data overlay, and expert configuration options. Designed to support multiple IPM stations at GSI/FAIR, the system is currently in operational use at SIS18 (heavy-ion synchrotron) and ESR (Experimental Storage Ring).
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