Performance of the ALICE Zero Degree Calorimeters in Pb-Pb collisions at LHC

Author

Oppedisano, C.

Author_Institution

ALICE Collaboration, USA

fYear

2011

fDate

23-29 Oct. 2011

Firstpage

2055

Lastpage

2059

Abstract

ALICE is the dedicated heavy-ion experiment at the LHC collider. The ALICE Zero Degree Calorimeters have been designed to measure the centrality and to monitor the LHC beam luminosity in A-A collisions. The ZDC system is made of two identical sets of forward hadronic calorimeters placed on both sides relative to the Interaction Point and it is complemented by two small electromagnetic calorimeters. In this paper the performance of these detectors in 2010 Pb-Pb data taking is discussed, focusing on the centrality determination and on the event selection capabilities of the ZDCs. Finally, the first measurement of cross sections for electromagnetic dissociation of Pb nuclei at √S_NN = 2.76 TeV with neutron emission is presented.

Keywords

heavy ion-nucleus reactions; nuclei with mass number 190 to 219; particle beam focusing; particle calorimetry; ALICE zero degree calorimeter; LHC beam luminosity; Large Hadron Collider; Pb(Pb,X); centrality determination; electromagnetic calorimeter; electromagnetic dissociation cross section; forward hadronic calorimeter; heavy-ion experiment; interaction point; neutron emission; Large Hadron Collider; Radio frequency;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2011 IEEE

Conference_Location

Valencia

ISSN

1082-3654

Print_ISBN

978-1-4673-0118-3

Type

conf

DOI

10.1109/NSSMIC.2011.6154418

Filename

6154418