Real-Time Data Processing in the Muon System of the D0 Detector

TL;DR

This paper describes the implementation of a real-time data processing system using 16-bit fixed point DSPs for the Muon System of the D0 detector at Fermilab, capable of handling 10 KHz event rates with minimal deadtime.

Contribution

It introduces a novel real-time data processing application utilizing DSPs for high-energy physics detector readout, achieving efficient event handling at 10 KHz.

Findings

Processing algorithms complete tasks in about 20 microseconds per event.

The system successfully processes data at the required 10 KHz rate.

Efficient multisignal processing achieved with specialized DSP hardware.

Abstract

This paper presents a real-time application of the 16-bit fixed point Digital Signal Processors (DSPs), in the Muon System of the D0 detector located at the Fermilab Tevatron, presently the world's highest-energy hadron collider. As part of the Upgrade for a run beginning in the year 2000, the system is required to process data at an input event rate of 10 KHz without incurring significant deadtime in readout. The ADSP21csp01 processor has high I/O bandwidth, single cycle instruction execution and fast task switching support to provide efficient multisignal processing. The processor's internal memory consists of 4K words of Program Memory and 4K words of Data Memory. In addition there is an external memory of 32K words for general event buffering and 16K words of Dual Port Memory for input data queuing. This DSP fulfills the requirement of the Muon subdetector systems for data readout. All error handling, buffering, formatting and transferring of the data to the various trigger levels of the data acquisition system is done in software. The algorithms developed for the system complete these tasks in about 20 microseconds per event.