July 31, 2017 to August 4, 2017
Fermi National Accelerator Laboratory
US/Central timezone

Data Acquisition with GPUs for the Muon g-2 Experiment at Fermilab

Aug 2, 2017, 2:05 PM
Hornets Nest (Fermi National Accelerator Laboratory)

Hornets Nest

Fermi National Accelerator Laboratory

Presentation Computing, Analysis Tools and Data Handling Computing, Analysis Tools, and Data Handling


Dr Wes Gohn (University of Kentucky)


A new measurement of the anomalous magnetic moment of the muon, $a_{\mu} \equiv (g-2)/2$, will be performed at the Fermi National Accelerator Laboratory. The most recent measurement, performed at Brookhaven National Laboratory and completed in 2001, shows a 3.5 standard deviation discrepancy with the standard model value of $a_\mu$. The new measurement will accumulate 21 times those statistics, measuring $a_\mu$ to 140 ppb and improving the uncertainty by a factor of 4 over that of the previous measurement. The data acquisition system for this experiment must have the ability to create deadtime-free records from 700 $\mu$s muon fills at a raw data rate 20 GB per second. Data will be collected using 1296 channels of $\mu$TCA-based 800 MSPS, 12 bit waveform digitizers and processed in a layered array of networked commodity processors with 26 Nvidia Tesla K40 GPUs working in parallel to perform a fast recording of the muon decays during the spill. The system will be controlled using the MIDAS data acquisition software package. The described data acquisition system is currently being commissioned, and will be fully operational before the start of the experiment later in 2017.

Primary author

Dr Wes Gohn (University of Kentucky)

Presentation materials