Laboratory of Information Technologies

Joint Laboratory Seminar

Date and Time: Wednesday, 25 June 2025, at 3:00 PM

Venue: room 310, Meshcheryakov Laboratory of Information Technologies, online on Webinar

Link to join the seminar

Seminar topic: “SPD Online Filter: primary data processing facility of SPD Experiment”

Speaker: Danila Oleynik

Abstract:

The SPD (Spin Physics Detector) experiment is aimed at studying the spin structure of nucleons and other spin-related phenomena using polarized proton and deuteron beams. The eponymous experimental setup will be installed at the NICA collider, currently under construction at the Joint Institute for Nuclear Research. When the collider reaches optimal operating conditions—an energy of 27 GeV and a luminosity of 10³² cm^-2·s^-1 — the expected events rate will be 3 MHz.

Depending on the parameters and operational mode of the NICA accelerator complex, the anticipated raw data stream from the detector systems could reach ~20 GB/s. Considering the limitations of data acquisition periods within the scope of the research, the setup is expected to produce up to 200 PB of data per year under optimal accelerator conditions. Long-term storage and comprehensive processing of data accumulating at such volumes are neither feasible nor practical.

To address the challenge of identifying physical events in the detector data stream, performing initial event filtering to reduce the volume of data for permanent storage, monitoring data quality, ensuring the proper operation of the setup, and conducting other primary data processing tasks, a specialized computing system — the SPD OnLine Filter — is being implemented.