IPbus extension for the ALFRED framework

We present a development of the ALFRED framework that includes support for the IPbus protocol, created for the Fast Interaction Trigger (FIT) detector in the ALICE experiment at CERN. This modification resolves the incompatibility between the current GBT-based slow-control protocols and the FIT electronics, which is based on the IPbus. A compatibility layer, named ALF IPbus, was created in C++ and integrated with DIM services, allowing for the transparent conversion of SWT frames into IPbus transactions. Benchmark tests indicated median execution times of less than 4.2 $μ$s per frame for sequences above 512 words, comfortably meeting the ALICE Detector Control System requirements. Long-term stability tests conducted in the FV0 detector achieved an uptime close to 100\% from the moment of implementation on the FIT-FV0 detector. This solution enables FIT operation without firmware changes, ensures smooth integration with SCADA systems, and provides a scalable pathway for future migration to GBT-based control. The approach is general and can be applied to other ALICE subdetectors and high-energy physics experiments requiring protocol bridging.

Publication Details

Journal
ArXiv.org
Published
2025-10-13
Primary Topic
Maritime Transport Emissions and Efficiency
Type
article
Field-Weighted Citation Impact
0.00

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article

IPbus extension for the ALFRED framework

ArXiv.org
Maritime Transport Emissions and Efficiency
article

IPbus extension for the ALFRED framework

article en

Abstract

We present a development of the ALFRED framework that includes support for the IPbus protocol, created for the Fast Interaction Trigger (FIT) detector in the ALICE experiment at CERN. This modification resolves the incompatibility between the current GBT-based slow-control protocols and the FIT electronics, which is based on the IPbus. A compatibility layer, named ALF IPbus, was created in C++ and integrated with DIM services, allowing for the transparent conversion of SWT frames into IPbus transactions. Benchmark tests indicated median execution times of less than 4.2 $μ$s per frame for sequences above 512 words, comfortably meeting the ALICE Detector Control System requirements. Long-term stability tests conducted in the FV0 detector achieved an uptime close to 100\% from the moment of implementation on the FIT-FV0 detector. This solution enables FIT operation without firmware changes, ensures smooth integration with SCADA systems, and provides a scalable pathway for future migration to GBT-based control. The approach is general and can be applied to other ALICE subdetectors and high-energy physics experiments requiring protocol bridging.

ArXiv.org
CERN
Openalex Percentile: Top 51%
Maritime Transport Emissions and Efficiency
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