The upgraded ALICE TPC is reinstalled

ALICE matters

After an intense upgrade period the ALICE Time Projection Chamber (TPC) was reinstalled in the cavern in August 2020.

The Time Projection Chamber, together with the silicon Inner Tracking System (ITS) are the main tracking devices of ALICE.  The TPC is a 5 metres long gas-filled cylinder, where  the charge produced by ionising particles is projected onto detectors arranged in two endplates.  These detectors were Multiwire Proportional Chambers (MWPC) during LHC Run1 and Run2.  They were replaced by detectors based on the Gas Electron Multiplier (GEM) technology during LS2, and together with the new readout electronics which allow continuous readout, will enhance the capability of ALICE to record collisions up to a rate of 50 kHz.

More about the TPC upgrade.

More photographs of the movement and insertion of the TPC can be found here.

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