CERN Accelerating science

LHCb Notes

Upgrade trigger: Bandwidth strategy proposal / Boettcher, Thomas Julian (Massachusetts Inst. of Technology (US)) ; Fitzpatrick, Conor (Ecole Polytechnique Federale de Lausanne (CH)) ; Meloni, Simone (Universita & INFN, Milano-Bicocca (IT)) ; Whitehead, Mark Peter (CERN) ; Williams, Mark Richard James (University of Manchester (GB))
This document describes a proposed selection strategy for the upgrade trigger using charm signals as a benchmark. The Upgrade trigger uses a 'Run2-like' sequence consisting of a first and second stage, in between which the calibration and alignment is performed. [...]
LHCb-PUB-2017-006; CERN-LHCb-PUB-2017-006.- Geneva : CERN, 2017

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Upgrade trigger: Biannual performance update / Aaij, Roel (CERN) ; Albrecht, Johannes (Technische Universitaet Dortmund (DE)) ; Couturier, Ben (CERN) ; Esen, Sevda (Ruprecht-Karls-Universitaet Heidelberg (DE)) ; De Cian, Michel (Ruprecht-Karls-Universitaet Heidelberg (DE)) ; Dziurda, Agnieszka (CERN) ; Fitzpatrick, Conor (Ecole Polytechnique Federale de Lausanne (CH)) ; Fontana, Marianna (Universita e INFN, Cagliari (IT)) ; Grillo, Lucia (Universita & INFN, Milano-Bicocca (IT)) ; Hasse, Christoph (Technische Universitaet Dortmund (DE)) et al.
This document presents the performance of the LHCb Upgrade trigger reconstruction sequence, incorporating changes to the underlying reconstruction algorithms and detector description since the Trigger and Online Upgrade TDR. An updated extrapolation is presented using the most recent example of an Event Filter Farm node..
LHCb-PUB-2017-005; CERN-LHCb-PUB-2017-005.- Geneva : CERN, 2017

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BDT based inclusive charm trigger / Amerio, Silvia (Universita e INFN, Padova (IT)) ; Gligorov, Vladimir (Centre National de la Recherche Scientifique (FR)) ; Lucchesi, Donatella (Universita e INFN, Padova (IT)) ; Michielin, Emanuele (Universita e INFN, Padova (IT)) ; Spradlin, Patrick (University of Glasgow (GB))
This note describes the implementation and performance of the inclusive charm triggers, based on multivariate techniques, in the LHCb High Level Trigger for LHC Run II data taking..
LHCb-PUB-2017-004; CERN-LHCb-PUB-2017-004.- Geneva : CERN, 2017 - 14. Fulltext: PDF;

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Simplified Detector Description for LHCb Upgrade / Couturier, Ben (CERN) ; Szumlak, Tomasz (AGH University of Science and Technology (PL))
in preparation
LHCb-PUB-2017-003; CERN-LHCb-PUB-2017-003.- Geneva : CERN, 2017

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Primary Vertex Reconstruction for Upgrade at LHCb / Dziurda, Agnieszka (CERN) ; Wanczyk, Joanna (CERN)
in preparation
LHCb-PUB-2017-002; CERN-LHCb-PUB-2017-002.- Geneva : CERN, 2017

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PatLongLivedTracking: A tracking algorithm for the reconstruction of the daughters of long-lived particles in LHCb / Davis, Adam (Tsinghua University (CN)) ; De Cian, Michel (Ruprecht-Karls-Universitaet Heidelberg (DE)) ; Dendek, Adam Mateusz (AGH University of Science and Technology (PL)) ; Szumlak, Tomasz (AGH University of Science and Technology (PL))
in preparation
LHCb-PUB-2017-001; CERN-LHCb-PUB-2017-001.- Geneva : CERN, 2017 - mult p..

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A Track Matching Algorithm for the LHCb upgrade / Esen, Sevda (Ruprecht-Karls-Universitaet Heidelberg (DE)) ; De Cian, Michel (Ruprecht-Karls-Universitaet Heidelberg (DE))
This document presents a description and performance estimate of the Track Matching algorithm for the LHCb Upgrade. The algorithm combines tracks reconstructed in the Vertex Locator and in the three stations of the Scintillating Fibre Tracker..
LHCb-PUB-2016-027; CERN-LHCb-PUB-2016-027.- Geneva : CERN, 2016 - mult p..

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Shear and Thermal Testing of Adhesives for VELO Upgrade / De Capua, Stefano (University of Manchester (GB)) ; Freestone, Julian (University of Manchester (GB)) ; Klaver, Suzanne (University of Manchester (GB)) ; Parkes, Chris (University of Manchester (GB)) ; Rodriguez Perez, Pablo (University of Manchester (GB)) ; Shtipliyski, Antoni (Imperial College (GB)) ; Stelmasiak, Guy James (University of Manchester (GB))
As part of the R&D; process of the LHCb VELO Upgrade, a study has been performed on the thermal and mechanical performance of the adhesives Stycast 2850FT, 3M 9461P, and Araldite 2011. One or more of these adhesives could be used to attach the ASICs and hybrids to the microchannel cooling substrate. [...]
LHCb-PUB-2016-026; CERN-LHCb-PUB-2016-026; LHCb-INT-2015-001.- Geneva : CERN, 2016 - 26. Fulltext: PDF;

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Synergy of BESIII and LHCb physics programmes / Malde, Sneha Sirirshkumar (University of Oxford (GB))
There is potential for BESIII open-charm measurements to have a significant impact on the LHCb physics programme. Despite the general purpose design of the LHCb detector there are certain inputs that can be better determined in other environments or in production mechanisms not accessible at the LHC. [...]
LHCb-PUB-2016-025; CERN-LHCb-PUB-2016-025.- Geneva : CERN, 2016 - 12. Fulltext: PDF;

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Work Project Report: Benchmark for 100 Gbps Ethernet network analysis / Moutidis, Iraklis
During the Long Shutdown 2 (2018-2019) the LHCb experiment will be upgraded in order to reach extremely high precision on the main observable of the b and c-quarks sectors. In its current state the LHCb experiment has a readout rate of 1.1 MHz within a fixed latency, which causes the collision rate to be limited [...]
LHCb-PUB-2016-024; CERN-LHCb-PUB-2016-024.- Geneva : CERN, 2016 - 8. Fulltext: PDF;

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