Argonne National Laboratory

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Status of the CALICE Digital Hadron Calorimeter

Bilki Burak, University of Iowa
September 3, 2014 11:00AM to 12:00PM
Building 362, Room F108
In order to measure the jet products of the hadronic decays of electroweak bosons in a future lepton collider with 3-4 percent resolution, a novel approach named Particle Flow Algorithms is proposed. The Particle Flow Algorithms attempt to measure each particle in a hadronic jet individually, using the detector providing the best energy/momentum resolution. The role of the hadronic calorimeters is to measure the neutral component of the hadronic jets. In this context, the CALICE Collaboration developed the Digital Hadron Calorimeter, which uses Resistive Plate Chambers as active media. The 1-bit resolution (digital) readout of 1 x 1 cm2 pads achieves a world record in the number of readout channels already at the prototyping stage. Here we report on the status of the Digital Hadron Calorimeter with results from several Fermilab test beam campaigns, powerful calibration and Monte Carlo techniques and recent developments on the Resistive Plate Chambers. We demonstrate algorithms unique to the Digital Hadron Calorimeter as well as display images of hadronic showers with unprecedented spatial resolution.