Performance of the combined zero degree calorimeter for CMS

Authors :: Grachov, O A
Murray, M
Snyder, J
Wood, J
Zhukova, V
Ayan, A S
Debbins, P
Ingram, D F
Norbeck, E
Onel, Y
Garcia, E
Stephans, G
Source :: J.Phys.Conf.Ser.160:012059,2009
Publication Year :: 2008
Abstract: The combined zero degree calorimeter (ZDC) is a combination of sampling quartz/tungsten electromagnetic and hadronic calorimeters. Two identical combined calorimeters are located in the LHC tunnel at CERN at the straight section ~140 m on each side of the CMS interaction vertex and between the two beam pipes. They will detect very forward photons and neutrons. ZDC information can be used for a variety of physics measurements as well as improving the collision centrality determination in heavy-ion collisions. Results are presented for ZDC performance studies with the CERN SPS H2 test beam.<br />Comment: 8 pages, 14 figures, Presented at XIII International Conference on Calorimetry in High Energy Physics, May 26-30, 2008, Pavia, Italy