Prototype Design of a Timing and Fast Control system in the CBM Experiment

(1) Karlsruhe Institute of Technology; (2) GSI Helmholtz Centre for Heavy Ion Research); C. Sturm (2); D. Emschermann (2); I. Fr\"ohlich (2); J. Becker (1) (for the CBM collaboration; S. B\"ahr (1); V. Sidorenko (1); W.F.J. M\"uller (2)

Prototype Design of a Timing and Fast Control system in the CBM Experiment

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arxiv 2110.12738 v2 pith:U3XUVR65 submitted 2021-10-25 physics.ins-det

V. Sidorenko (1) , I. Fröhlich (2) , W.F.J. Müller (2) , D. Emschermann (2) , S. Bähr (1) , C. Sturm (2) , J. Becker (1) (for the CBM collaboration , (1) Karlsruhe Institute of Technology

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(2) GSI Helmholtz Centre for Heavy Ion Research)

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keywords systemdataexperimentacquisitionbandwidthcontroldesignfast

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The Compressed Baryonic Matter (CBM) experiment is designed to handle interaction rates of up to 10 MHz and up to 1 TB/s of raw data generated. With triggerless streaming data acquisition in the experiment and beam intensity fluctuations, it is expected that occasional data bursts will surpass bandwidth capabilities of the Data Acquisition System (DAQ) system. In order to preserve integrity of event data, the bandwidth of DAQ must be throttled in an organised way with minimum information loss. The Timing and Fast Control (TFC) system provides a latency-optimised datapath for throttling commands and distributes a system clock together with a global timestamp. This paper describes a prototype design of the system with focus on synchronisation and its evaluation.

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Detectors and Electronics for the CBM experiment at FAIR
physics.ins-det 2025-06 conditional novelty 2.0 of 10

The CBM detector and electronics systems are reported as mature, with series production underway and key performance-validated through beam tests at mCBM and deployments in STAR, HADES, and E16.

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