Upgrade of the ALICE Experiment Letter Of Intent
Upgrade of the ALICE Experiment Letter Of Intent
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DOI：
10.1088/0954-3899/41/8/087001
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发表时间：
2014-08
期刊：
影响因子：
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通讯作者：
B. Abelev;J. Réal;A. Margotti;J. G. Contreras;T. Karavicheva;I. Arsene;L. Ramello;H. Gulkanyan-
中科院分区：
文献类型：
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作者：
B. Abelev;J. Réal;A. Margotti;J. G. Contreras;T. Karavicheva;I. Arsene;L. Ramello;H. Gulkanyan-
ALICE（大型离子对撞机实验）正在研究强相互作用物质的物理学，特别是夸克-胶子等离子体（QGP）的性质，使用欧洲核子研究中心LHC（大型强子对撞机）的质子-质子，质子-核和核-核碰撞。ALICE合作正在准备对实验装置进行重大升级，计划在2018-2019年第二次长时间关闭LHC时安装。这些计划在2012年9月提交给LHCC（LHC实验委员会）的ALICE升级意向书中提出。为了充分利用大型强子对撞机在这一领域的物理范围，必须对重味产生、夸克偶素、直接真实的和虚光子以及喷流进行高精度测量。这将通过将LHC Pb-Pb瞬时亮度提高到6×1027 cm−2s−1，并以50 kHz事件率连续读出ALICE探测器来实现。介绍了改进后探测器的物理性能以及主要的探测器改进。
ALICE (A Large Ion Collider Experiment) is studying the physics of strongly interacting matter, and in particular the properties of the Quark–Gluon Plasma (QGP), using proton–proton, proton–nucleus and nucleus–nucleus collisions at the CERN LHC (Large Hadron Collider). The ALICE Collaboration is preparing a major upgrade of the experimental apparatus, planned for installation in the second long LHC shutdown in the years 2018–2019. These plans are presented in the ALICE Upgrade Letter of Intent, submitted to the LHCC (LHC experiments Committee) in September 2012. In order to fully exploit the physics reach of the LHC in this field, high-precision measurements of the heavy-flavour production, quarkonia, direct real and virtual photons, and jets are necessary. This will be achieved by an increase of the LHC Pb–Pb instant luminosity up to 6×1027 cm−2s−1 and running the ALICE detector with the continuous readout at the 50 kHz event rate. The physics performance accessible with the upgraded detector, together with the main detector modifications, are presented.