The CMS barrel calorimeter response to particle beams from 2 to 350 GeV/c

The CMS barrel calorimeter response to particle beams from 2 to 350 GeV/c
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CMS 桶式热量计对 2 至 350 GeV/c 粒子束的响应

DOI:
10.1140/epjc/s10052-009-1024-0
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发表时间:
2009
期刊:
The European Physical Journal C
影响因子:
--
通讯作者:
Abdullin S
Abdullin S
中科院分区:
--
文献类型:
--
作者:
Abdullin S

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测量了CMS管式量热计(电磁加强子)在2 ~ 350gev /chas宽动量范围内对强子、电子和介子的响应。据我们所知,这是研究过的量热计系统中动量范围最广的。这些测试是在欧洲核子研究中心的H2束线上进行的,提供了丰富的信息,特别是在低能量下。本文分析了量热计对带电介子、介子、质子和反质子的响应差异,并详细讨论了其背后的现象。我们还展示了在重建强子能量时对来自截然不同的电磁(EB)和强子(HB)桶量热计的信号进行校正的技术。在5 GeV/c以上,这些修正提高了组合系统的能量分辨率,其中随机项为84.7±1.6%,常数项为7.4±0.8%。修正后的平均响应在1.3%rms内保持不变。
The response of the CMS barrel calorimeter (electromagnetic plus hadronic) to hadrons, electrons and muons over a wide momentum range from 2 to 350 GeV/chas been measured. To our knowledge, this is the widest range of momenta in which any calorimeter system has been studied. These tests, carried out at the H2 beam-line at CERN, provide a wealth of information, especially at low energies. The analysis of the differences in calorimeter response to charged pions, kaons, protons and antiprotons and a detailed discussion of the underlying phenomena are presented. We also show techniques that apply corrections to the signals from the considerably different electromagnetic (EB) and hadronic (HB) barrel calorimeters in reconstructing the energies of hadrons. Above 5 GeV/c, these corrections improve the energy resolution of the combined system where the stochastic term equals 84.7±1.6% and the constant term is 7.4±0.8%. The corrected mean response remains constant within 1.3%rms.
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