LArIAT begins taking data for Run II

Charged pion candidate enters from left; multiple interactions along its path result in additional particles being emitted at interaction points.

Charged pion candidate enters from left; multiple interactions along its path result in additional particles being emitted at interaction points.

LArIAT, the Liquid Argon In A Testbeam experiment, has just resumed operation in the MCenter beamline.

Data-taking for Run II began on schedule, on Feb. 17. As with Run I, the experiment began recording beautiful low-noise events within minutes of turning on LArIAT’s liquid-argon time projection chamber, as shown in the image. The custom-designed LArTPC electronics used to record these signals in LArIAT are based on the electronics designed for and used by MicroBooNE. The signal-to-noise ratio achieved by these electronics is impressively high, leading to the clean event images recorded by the experiment.

While collecting Run II data, the collaboration is working to analyze data from Run I. With data from both run periods, the experiment will characterize the response of LArTPCs to charged-particle interactions in the argon, providing important input to current and upcoming LArTPC neutrino experiments such as MicroBooNE, SBN and DUNE.