Improved performance of the LHCb Outer Tracker in LHC Run 2

P. D'Argent; L. Dufour; L. Grillo; J.A. De Vries; A. Ukleja; R. Aaij; F. Archilli; S. Bachmann; D. Berninghoff; A. Birnkraut; J. Blouw; M. De Cian; G. Ciezarek; C. Färber; M. Demmer; F. Dettori; E. Gersabeck; J. Grabowski; W.D. Hulsbergen; B. Khanji; M. Kolpin; M. Kucharczyk; B.P. Malecki; M. Merk; M. Mulder; J. Müller; V. Mueller; A. Pellegrino; M. Pikies; B. Rachwal; T. Schmelzer; B. Spaan; M. Szczekowski; J. Van Tilburg; S. Tolk; N. Tuning; U. Uwer; J. Wishahi; M. Witek

doi:10.1088/1748-0221/12/11/P11016

Improved performance of the LHCb Outer Tracker in LHC Run 2

P. D'Argent, L. Dufour, L. Grillo, J.A. De Vries, A. Ukleja, R. Aaij, F. Archilli, S. Bachmann, D. Berninghoff, A. Birnkraut, J. Blouw, M. De Cian, G. Ciezarek, C. Färber, M. Demmer, F. Dettori, E. Gersabeck, J. Grabowski, W.D. Hulsbergen, B. KhanjiM. Kolpin, M. Kucharczyk, B.P. Malecki, M. Merk, M. Mulder, J. Müller, V. Mueller, A. Pellegrino, M. Pikies, B. Rachwal, T. Schmelzer, B. Spaan, M. Szczekowski, J. Van Tilburg, S. Tolk, N. Tuning, U. Uwer, J. Wishahi, M. Witek

Research output: Contribution to Journal › Article › Academic › peer-review

Abstract

The LHCb Outer Tracker is a gaseous detector covering an area of 5 × 6 m2 with 12 double layers of straw tubes. The performance of the detector is presented based on data of the LHC Run 2 running period from 2015 and 2016. Occupancies and operational experience for data collected in pp, pPb and PbPb collisions are described. An updated study of the ageing effects is presented showing no signs of gain deterioration or other radiation damage effects. In addition several improvements with respect to LHC Run 1 data taking are introduced. A novel real-time calibration of the time-alignment of the detector and the alignment of the single monolayers composing detector modules are presented, improving the drift-time and position resolution of the detector by 20%. Finally, a potential use of the improved resolution for the timing of charged tracks is described, showing the possibility to identify low-momentum hadrons with their time-of-flight.

Original language	English
Article number	P11016
Journal	Journal of Instrumentation
Volume	12
Issue number	11
DOIs	https://doi.org/10.1088/1748-0221/12/11/P11016
Publication status	Published - 20 Nov 2017
Externally published	Yes

Funding

We express our gratitude to our colleagues in the CERN accelerator departments for the excellent performance of the LHC. We thank the technical and administrative staff at the LHCb institutes. We acknowledge support from CERN and from the national agencies: CAPES, CNPq, FAPERJ and FINEP (Brazil); NSFC (China); CNRS/IN2P3 (France); BMBF, DFG and MPG (Germany); INFN (Italy); FOM and NWO (The Netherlands); MNiSW and NCN (Poland); MEN/IFA (Romania); MinES and FANO (Russia); MinECo (Spain); SNSF and SER (Switzerland); NASU (Ukraine); STFC (United Kingdom); NSF (U.S.A.). We acknowledge the computing resources that are provided by CERN, IN2P3 (France), KIT and DESY (Germany), INFN (Italy), SURF (The Netherlands), PIC (Spain), GridPP (United Kingdom), RRCKI (Russia), CSCS (Switzerland), IFIN-HH (Romania), CBPF (Brazil), PL-GRID (Poland) and OSC (U.S.A.). We are indebted to the communities behind the multiple open source software packages on which we depend. We are also thankful for the computing resources and the access to software R&D tools provided by Yandex LLC (Russia). Individual groups or members have received support from AvH Foundation (Germany), EPLANET, Marie Skłodowska-Curie Actions and ERC (European Union), Conseil Général de Haute-Savoie, Labex ENIGMASS and OCEVU, Région Auvergne (France), RFBR (Russia), XuntaGal and GENCAT (Spain), The Royal Society and Royal Commission for the Exhibition of 1851 (United Kingdom).

Funders	Funder number
CNRS/IN2P3
MinES
National Science Foundation
School of Energy Resources, University of Wyoming
CERN
Science and Technology Facilities Council	ST/N000331/1, GRIDPP
Deutsche Forschungsgemeinschaft
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
National Natural Science Foundation of China
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Bundesministerium für Bildung und Forschung
Nederlandse Organisatie voor Wetenschappelijk Onderzoek
Foundation for Fundamental Research on Matter
Conselho Nacional de Desenvolvimento Científico e Tecnológico
Instituto Nazionale di Fisica Nucleare
Narodowe Centrum Nauki
Ministerstwo Nauki i Szkolnictwa Wyższego
Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro
National Academy of Sciences of Ukraine
Financiadora de Estudos e Projetos

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D'Argent, P., Dufour, L., Grillo, L., De Vries, J. A., Ukleja, A., Aaij, R., Archilli, F., Bachmann, S., Berninghoff, D., Birnkraut, A., Blouw, J., Cian, M. D., Ciezarek, G., Färber, C., Demmer, M., Dettori, F., Gersabeck, E., Grabowski, J., Hulsbergen, W. D., ... Witek, M. (2017). Improved performance of the LHCb Outer Tracker in LHC Run 2. Journal of Instrumentation, 12(11), Article P11016. https://doi.org/10.1088/1748-0221/12/11/P11016

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D'Argent, P, Dufour, L, Grillo, L, De Vries, JA, Ukleja, A, Aaij, R, Archilli, F, Bachmann, S, Berninghoff, D, Birnkraut, A, Blouw, J, Cian, MD, Ciezarek, G, Färber, C, Demmer, M, Dettori, F, Gersabeck, E, Grabowski, J, Hulsbergen, WD, Khanji, B, Kolpin, M, Kucharczyk, M, Malecki, BP, Merk, M, Mulder, M, Müller, J, Mueller, V, Pellegrino, A, Pikies, M, Rachwal, B, Schmelzer, T, Spaan, B, Szczekowski, M, Tilburg, JV, Tolk, S, Tuning, N, Uwer, U, Wishahi, J & Witek, M 2017, 'Improved performance of the LHCb Outer Tracker in LHC Run 2', Journal of Instrumentation, vol. 12, no. 11, P11016. https://doi.org/10.1088/1748-0221/12/11/P11016

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AU - D'Argent, P.

AU - Dufour, L.

AU - Grillo, L.

AU - De Vries, J.A.

AU - Ukleja, A.

AU - Aaij, R.

AU - Archilli, F.

AU - Bachmann, S.

AU - Berninghoff, D.

AU - Birnkraut, A.

AU - Blouw, J.

AU - Cian, M. De

AU - Ciezarek, G.

AU - Färber, C.

AU - Demmer, M.

AU - Dettori, F.

AU - Gersabeck, E.

AU - Grabowski, J.

AU - Hulsbergen, W.D.

AU - Khanji, B.

AU - Kolpin, M.

AU - Kucharczyk, M.

AU - Malecki, B.P.

AU - Merk, M.

AU - Mulder, M.

AU - Müller, J.

AU - Mueller, V.

AU - Pellegrino, A.

AU - Pikies, M.

AU - Rachwal, B.

AU - Schmelzer, T.

AU - Spaan, B.

AU - Szczekowski, M.

AU - Tilburg, J. Van

AU - Tolk, S.

AU - Tuning, N.

AU - Uwer, U.

AU - Wishahi, J.

AU - Witek, M.

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Improved performance of the LHCb Outer Tracker in LHC Run 2

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