First operation of a liquid-argon TPC embedded in a magnetic field

Abstract

We have operated for the first time a liquid-argon TPC immersed in a magnetic field up to 0.55 tesla. We show that the imaging properties of the detector are not affected by the presence of the magnetic field. The magnetic bending of the ionizing particle allows one to discriminate their charge and estimate their momentum. These figures have up to now not been accessible in the non-magnetized liquid-argon TPC.