The Active Target Time Projection Chamber

The Active Target Time Projection Chamber (AT-TPC) is a flagship detector at the Facility for Rare Isotope Beams at Michigan State University. Below are some relevant details for using the detector. For more comprehensive overviews see the publications.

The Standard Trigger

Below is a a diagram of the standard trigger logic used in AT-TPC experiments. The trigger requires a coincidence between a delayed ion chamber signal and a signal on the Micromegas mesh. This makes the trigger a constant time reference based on the ion chamber. Typically an additional downscaled ion chamber trigger is also included.