Very Forward Calorimetry at the LHC - Recent results from ATLAS
Abstract
We present first results from the ATLAS Zero Degree Calorimeters (ZDC) based on 7~TeV pp collision data recorded in 2010. The ZDC coverage of +/-~350 microradians about the forward direction makes possible the measurement of neutral particles (primarily pi0's and neutrons) over the kinematic region x_F >~0.1 and out to p_T<~ 1.2 GeV/c at large x_F. The ATLAS ZDC is unique in that it provides a complete image of both electromagnetic and hadronic showers.This is illustrated with the reconstruction of pi0's with energies of 0.7-3.5 TeV. We also discuss the waveform reconstruction algorithm which has allowed good time-of-flight resolution on leading neutrons emerging from the collisions despite the sparse (40 MHz) sampling of the calorimeter signals used.
Keywords
Cite
@article{arxiv.1101.2889,
title = {Very Forward Calorimetry at the LHC - Recent results from ATLAS},
author = {Sebastian N. White},
journal= {arXiv preprint arXiv:1101.2889},
year = {2015}
}
Comments
8 pages, 2 figures, to be published in proceedings of Diffraction 2010, International Workshop on Diffraction in High Energy Physics, Otranto, Italy, September 10-15, 2010