Time Projection Chamber

  • Posted on: 23 July 2014
The main device in ALICE's central barrel for the tracking and identification of charged particles, coping with unprecedented densities.

The ALICE Time Projection Chamber (TPC) is a large cylindrical volume filled with gas. Charged particles crossing the TPC ionize the gas atoms along their path, liberating electrons that drift towards the readout chambers covering the end plates of the cylinder. The signals read out by the 557,568 pads of these chambers provide 3-D information of the trajectory of the particles and measure their energy loss.

Read more about the TPC.