The ITS3 detector and physics reach of the LS3 ALICE Upgrade

被引：0

作者：

Wang, Chun-Zheng ^{[1
,2
,3
]}

机构：

[1] Fudan Univ, Inst Modern Phys, MOE, Key Lab Nucl Phys & Ion Beam Applicat, Shanghai 200433, Peoples R China

[2] Cent China Normal Univ, Key Lab Quark Lepton Phys, MOE, Wuhan 430079, Peoples R China

[3] Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China

来源：

21ST INTERNATIONAL CONFERENCE ON STRANGENESS IN QUARK MATTER, SQM 2024 | 2025年 / 316卷

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1051/epjconf/202531607002

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

During Large Hadron Collider (LHC) Long Shutdown 3 (LS3) (2026-30), the ALICE experiment is replacing its inner-most three tracking layers by a new detector, Inner Tracking System 3. It will be based on newly developed wafer-scale monolithic active pixel sensors, which are bent into truly cylindrical layers and held in place by light mechanics made from carbon foam. Unprecedented low values of material budget (per layer) and closeness to interaction point (19 mm) lead to a factor two improvement in pointing resolutions from very low pT (O(100MeV/c)), achieving, for example, 20 mu m and 15 mu m in the transversal and longitudinal directions, respectively, for 1 GeV/c primary charged pions. After a successful R&D phase 2019-2023, which demonstrated the feasibility of this innovational detector, the final sensor and mechanics are being developed. This contribution briefly reviews the conceptual design and the main R&D achievements, as well as the current activities and road to completion and installation. It concludes with a projection of the improved physics performance, in particular for heavy-flavour hadrons, as well as for thermal dielectrons, that will come into reach with this new detector installed.

引用

页数：4

共 7 条

[1] Anisotropic Flow of Charged Particles in Pb-Pb Collisions at √SNN=5.02 TeV [J].

Adam, J. ;

Adamova, D. ;

Aggarwal, M. M. ;

Rinella, G. Aglieri ;

Agnello, M. ;

Agrawal, N. ;

Ahammed, Z. ;

Ahmad, S. ;

Ahn, S. U. ;

Aiola, S. ;

Akindinov, A. ;

Alam, S. N. ;

Albuquerque, D. S. D. ;

Aleksandrov, D. ;

Alessandro, B. ;

Alexandre, D. ;

Alfaro Molina, R. ;

Alici, A. ;

Alkin, A. ;

Almaraz, J. R. M. ;

Alme, J. ;

Alt, T. ;

Altinpinar, S. ;

Altsybeev, I. ;

Alves Garcia Prado, C. ;

Andrei, C. ;

Andronic, A. ;

Anguelov, V. ;

Anticic, T. ;

Antinori, F. ;

Antonioli, P. ;

Aphecetche, L. ;

Appelshaeuser, H. ;

Arcelli, S. ;

Arnaldi, R. ;

Arnold, O. W. ;

Arsene, I. C. ;

Arslandok, M. ;

Audurier, B. ;

Augustinus, A. ;

Averbeck, R. ;

Azmi, M. D. ;

Badala, A. ;

Baek, Y. W. ;

Bagnasco, S. ;

Bailhache, R. ;

Bala, R. ;

Balasubramanian, S. ;

Baldisseri, A. ;

Baral, R. C. .

PHYSICAL REVIEW LETTERS, 2016, 116 (13)

[2]

ALICEcollaboration, 2023, UpgradeoftheALICEInnerTrackingSystemduringLS3: studyofphysicsperformance

[3]

ALICEcollaboration, 2024, TechnicalDesignReportfortheALICEInnerTrackingSystem3

[4]

HeandR M., 2020, Rapp, PRL, V124, DOI [10.1103/PhysRevLett.124.042301, DOI 10.1103/PHYSREVLETT.124.042301]

[5]

Mager M., 2016, NIM-A, V824, P434, DOI [10.1016/j.nima.2015.09.057, DOI 10.1016/J.NIMA.2015.09.057]

[6]

Richter Matthias, 2018, Zenodo

[7]

Rinella G.A., 2024, arXiv

← 1 →