The DHCAL expansion

Shower display

A recent event display of a 32-gigaelectronvolt pion in all three sections of the CALICE calorimeter, currently undergoing tests in the FTBF particle beam. The TCMT, the main section of the DHCAL, and the electromagnetic calorimeter are depicted from left to right in the top right section; the beam enters from the right. Red and blue dots indicate the energy deposited in the ECAL section. The pion shower develops in the DHCAL as shown by the black dots. Vestiges of the pion shower’s tail are seen in the TCMT as a few sparse dots. Top left: front view. Top right and bottom left: top views. Bottom right: Three-quarters view. Image courtesy of Daniel Jeans.

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