MPX Detectors as LHC Luminosity Monitor

被引：0

作者：

Sopczak, Andre ^{[1
]}

Ali, Babar ^{[1
]}

Asbah, Nedaa ^{[2
]}

Bergmann, Benedikt ^{[1
]}

Bekhouche, Khaled ^{[3
]}

Caforio, Davide ^{[1
]}

Campbell, Michael ^{[4
]}

Heijne, Erik ^{[1
]}

Leroy, Claude ^{[2
]}

Lipniacka, Anna ^{[5
]}

Nessi, Marzio ^{[4
]}

Pospisil, Stanislav ^{[1
]}

Seifert, Frank ^{[1
]}

Solc, Jaroslav ^{[1
]}

Soueid, Paul ^{[2
]}

Suk, Michal ^{[1
]}

Turecek, Daniel ^{[1
]}

Vykydal, Zdenek ^{[1
]}

机构：

[1] Czech Tech Univ, Inst Expt & Appl Phys, Horska 3a, CZ-12800 Prague, Czech Republic

[2] Univ Montreal, Grp Particle Phys, Montreal, PQ H3T 1J4T, Canada

[3] Univ Mohammed Khidher, Fac Sci & Technol, Biskra 07000, Algeria

[4] CERN, CH-1211 Geneva 23, Switzerland

[5] Univ Bergen, Dept Phys & Technol, Alleegaten 55, N-5007 Bergen, Norway

来源：

2015 IEEE NUCLEAR SCIENCE SYMPOSIUM AND MEDICAL IMAGING CONFERENCE (NSS/MIC) | 2015年

基金：

加拿大自然科学与工程研究理事会;

关键词：

Pixel detectors; Luminosity; LHC; Medipix;

D O I：

暂无

中图分类号：

R8 [特种医学]; R445 [影像诊断学];

学科分类号：

1002 ; 100207 ; 1009 ;

摘要：

A network of 16 Medipix-2 (MPX) silicon pixel devices was installed in the ATLAS detector cavern at CERN. It was designed to measure the composition and spectral characteristics of the radiation field in the ATLAS experiment and its surroundings. This study demonstrates that the MPX network can also be used as a self-sufficient luminosity monitoring system. The MPX detectors collect data independently of the ATLAS data-recording chain, and thus they provide independent measurements of the bunch-integrated ATLAS/LHC luminosity. In particular, the MPX detectors located close enough to the primary interaction point are used to perform van der Meer calibration scans with high precision. Results from the luminosity monitoring are presented for 2012 data taken at root s = 8 TeV proton-proton collisions. The characteristics of the LHC luminosity reduction rate are studied and the effects of beam-beam (burn-off) and beam-gas (single bunch) interactions are evaluated. The systematic variations observed in the MPX luminosity measurements are below 0.3% for one minute intervals.

引用

页数：9

共 12 条

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