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Variable Energy Cyclotron Centre, Kolkata

GAMma Multiplicity filter Array (GAMMA)

The 50 element BaF₂ multiplicity filter, each having dimensions of 3.5 cm x 3.5 cm x 5 cm, is generally  used in conjunction with the LAMBDA high energy gamma-spectrometer (or with any other detection systems) for estimating the angular momentum populated in each event. Its fast time response (450 ps) is useful for taking the start trigger (instead of the cyclotron RF) for an improved time-of-flight measurement.

 Photograph of the GAMMA @K130 beamline at VECC