scholarly journals Study of Very Forward Neutrons with the CMS Zero Degree Calorimeter

Universe ◽  
2019 ◽  
Vol 5 (10) ◽  
pp. 210
Author(s):  
Keyword(s):  
Energy Distribution ◽  
Multiplicity Distribution ◽  
Neutron Multiplicity ◽  
Quartz Fiber ◽  
Test Beam ◽  
Zero Degree Calorimeter ◽  
Event Plane ◽  
Cms Experiment ◽  
Zero Degree ◽  
Pseudorapidity Range

Forward neutrons are studied in proton-lead collisions at the CMS experiment at the CERN LHC. They provide information on the centrality and event plane of collisions and provide an opportunity to study nuclear breakup. At the CMS experiment they are detected by the Zero Degree Calorimeters (ZDCs) in the | η | > 8.5 pseudorapidity range. The ZDCs are quartz fiber Cherenkov calorimeters using tungsten as absorber. Test beam data and events with a single spectator neutron are used for the calibration of these detectors. A Fourier-based method is used correct for the effect of multiple pPb collisions. The corrected ZDC energy distribution is used to calculate centrality percentiles and unfold the neutron multiplicity distribution.

Test beam results on the Proton Zero Degree Calorimeter for the ALICE experiment

2006 ◽  
Author(s):  
R. Arnaldi ◽  
E. Chiavassa ◽  
C. Cicalò ◽  
P. Cortese ◽  
A. De Falco ◽  
...  
Keyword(s):  
Test Beam ◽  
Alice Experiment ◽  
Zero Degree Calorimeter ◽  
Zero Degree

scholarly journals Status of Zero Degree Calorimeter for CMS Experiment

2006 ◽  
Author(s):  
O. A. Grachov ◽  
M. J. Murray ◽  
A. S. Ayan ◽  
P. Debbins ◽  
E. Norbeck ◽  
...  
Keyword(s):  
Zero Degree Calorimeter ◽  
Cms Experiment ◽  
Zero Degree

The proton zero degree calorimeter for the ALICE experiment

2005 ◽  
Author(s):  
R. Arnaldi ◽  
S. Basciu ◽  
E. Chiavassa ◽  
C. Cicalo ◽  
P. Cortese ◽  
...  
Keyword(s):  
Alice Experiment ◽  
Zero Degree Calorimeter ◽  
Zero Degree

scholarly journals THE STATUS OF THE CMS EXPERIMENT

2009 ◽  
Vol 24 (18n19) ◽  
pp. 3256-3265
Author(s):  
DAN GREEN
Keyword(s):  
Cosmic Ray ◽  
Realistic Model ◽  
Initial Energy ◽  
Energy Calibration ◽  
Test Beam ◽  
Cms Experiment ◽  
Cms Detector ◽  
The Status ◽  
Analysis System ◽  
Data Analysis System

The CMS experiment was completely assembled in the fall of 2008 after a decade of design, construction and installation. During the last two years, cosmic ray data were taken on a regular basis. These data have enabled CMS to align the detector components, both spatially and temporally. Initial use of muons has also established the relative alignment of the CMS tracking and muon systems. In addition, the CMS calorimetry has been crosschecked with test beam data, thus providing an initial energy calibration of CMS calorimetry to about 5%. The CMS magnet has been powered and field mapped. The trigger and data acquisition systems have been installed and run at full speed. The tiered data analysis system has been exercised at full design bandwidth for Tier0, Tier1 and Tier2 sites. Monte Carlo simulation of the CMS detector has been constructed at a detailed geometric level and has been tuned to test beam and other production data to provide a realistic model of the CMS detector prior to first collisions.

scholarly journals Performance of the combined zero degree calorimeter for CMS

2009 ◽  
Vol 160 ◽  
pp. 012059 ◽  
Author(s):  
O A Grachov ◽  
M Murray ◽  
J Snyder ◽  
J Wood ◽  
V Zhukova ◽  
...  
Keyword(s):  
Zero Degree Calorimeter ◽  
Zero Degree
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