Measurement of the contribution of neutrons to hadron calorimeter signals

被引：14
|
作者：
Akchurin, N.
Berntzon, L.
Cardini, A.
Ferrari, R.
Gaudio, G.
Hauptman, J.
Kim, H.
La Rotonda, L.
Livan, M.
Meoni, E.
Paar, H.
Penzo, A.
Pinci, D.
Policicchio, A.
Popescu, S.
Susinno, G.
Roh, Y.
Vandelli, W.
Wigmans, R. [1 ]
机构：
[1] Texas Tech Univ, Lubbock, TX 79409 USA
[2] Univ Cagliari, Dipartimento Fis, I-09124 Cagliari, Italy
[3] Univ Pavia, Dipartimento Fis Nucl & Teor, I-27100 Pavia, Italy
[4] Iowa State Univ, Ames, IA USA
[5] Univ Calabria, Dipartimento Fis, I-87030 Commenda Di Rende, Italy
[6] Ist Nazl Fis Nucl, Cosenza, Italy
[7] Univ Calif San Diego, La Jolla, CA 92093 USA
[8] Ist Nazl Fis Nucl, Trieste, Italy
[9] Univ Roma La Sapienza, Dipartimento Fis, Rome, Italy
[10] CERN, Geneva, Switzerland
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2007年 / 581卷 / 03期
关键词：
Calorimetry; Cherenkov light; optical fibers; neutron signals;
D O I：
10.1016/j.nima.2007.08.049
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
The contributions of neutrons to hadronic signals from the DREAM calorimeter are measured by analyzing the time structure of these signals. The neutrons, which mainly originate from the evaporation stage of nuclear breakup in the hadronic shower development process, contribute through elastic scattering off protons in the plastic scintillating fibers which provide the dE/dx information in this calorimeter. This contribution is characterized by an exponential tail in the pulse shape, with a time constant of similar to 25ns. The relative contribution of neutrons to the signals increases with the distance from the shower axis. As expected, the neutrons do not contribute to the DREAM Cherenkov signals. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：643 / 650
页数：8
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