Construction and test of the final CMS Barrel Drift Tube Muon Chamber prototype

Aguilar-Benı́tez, M.; Alberdi, J.; Arneodo, M.; Banicz, K.; Benettoni, M.; Benvenuti, A. C.; Bethke, S.; Cerrada, M.; Cirio, R.; Colino, N.; Conti, E.; Dallavalle, Marco; Daniel, M. K.; Dattola, D.; Daudo, F.; Giorgi, M. De; Dosselli, U.; Fanfani, A.; Fanin, C.; Fouz, M. C.; Gasparini, F.; Gasparini, U.; Giacomelli, P.; Giordano, V.; Gonella, F.; Grandi, C.; Guaita, P.; Guerzoni, M.; Lacaprara, S.; Lippi, I.; Marcellini, S.; Marin, Juan Lieber; Martinelli, R.; Maselli, S.; Meneguzzo, A. T.; Migliore, E.; Mocholı́, J.; Monaco, V.; Montanari, A.; Montanari, C.; Odorici, F.; Oller, J.C.; Paoletti, S.; Passaseo, M.; Pegoraro, M.; Peroni, C.; Puerta, J.; Reithler, H.; Romero, A.; Romero, L.; Ronchese, P.; Rossi, Antônio; Rovelli, T.; Sacchi, R.; Salicio, J.; Staiano, A.; Steinbeck, T.; Torassa, E.; Travaglini, R.; Ventura, L.; Ventura, S.; Vitelli, A.; Voetee, F; Wegner, M.; Willmott, C.; Zotto, P.; Zumerle, G.

doi:10.1016/s0168-9002(01)01227-x

Cited by 19 publications

(13 citation statements)

References 4 publications

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“…Once the local pattern recognition is performed and local segments are built, a re-fit is performed treating t 0 as a free parameter, recomputing the hit positions and the final segment position and direction. At this final stage of the local reconstruction, the resolution is about 260 µm, in good agreement with the requirements for collision data [7] and the results from test beam measurements [8].…”

Section: Spatial Resolutionsupporting

confidence: 75%

Performance of the CMS drift tube chambers with cosmic rays

Chatrchyan¹,

Khachatryan²,

Sirunyan³

et al. 2010

J. Inst.

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Studies of the performance of the CMS drift tube barrel muon system are described, with results based on data collected during the CMS Cosmic Run at Four Tesla. For most of these data, the solenoidal magnet was operated with a central field of 3.8 T. The analysis of data from 246 out of a total of 250 chambers indicates a very good muon reconstruction capability, with a coordinate resolution for a single hit of about 260 µm, and a nearly 100% efficiency for the drift tube cells. The resolution of the track direction measured in the bending plane is about 1.8 mrad, and the efficiency to reconstruct a segment in a single chamber is higher than 99%. The CMS simulation of cosmic rays reproduces well the performance of the barrel muon detector.

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Section: Spatial Resolutionsupporting

confidence: 75%

Performance of the CMS drift tube chambers with cosmic rays

Chatrchyan¹,

Khachatryan²,

Sirunyan³

et al. 2010

J. Inst.

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“…The aim of the Muon System [7] is to provide a robust trigger, capable of performing bunchcrossing (BX) assignment and standalone transverse momentum (𝑝 𝑇 ) measurement, an efficient identification of muons, and to contribute to the measurement of the 𝑝 𝑇 of muons with energy as high as few hundreds of GeV or more. As shown in Figure 2, the barrel Drift Tube (DT) chambers [9] cover the psudorapidity region |𝜂| < 1.2, where the background is small, the muon rate is low and the magnetic field is uniform and mostly contained in the steel return yoke. In the two endcap regions of CMS, instead, the muon system adopts Cathode Strip Chambers (CSC) [10]: with their fast response time, fine segmentation and radiation resistance, the CSCs are used to track muons between |𝜂| values of 0.9 and 2.4.…”

Section: Muon Systemmentioning

confidence: 99%

Deep Learning fast inference on FPGA for CMS Muon Level-1 Trigger studies

Diotalevi¹,

Lorusso²,

Travaglini³

et al. 2021

Proceedings of International Symposium on Grids &Amp; Clouds 2021 — PoS(ISGC2021)

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With the advent of the High-Luminosity phase of the LHC (HL-LHC), the instantaneous luminosity of the Large Hadron Collider at CERN is expected to increase up to ≈ 7.5•10 34 𝑐𝑚 −2 𝑠 −1 . Therefore, new strategies for data acquisition and processing will be necessary, in preparation for the higher number of signals produced inside the detectors. In the context of an upgrade of the trigger system of the Compact Muon Solenoid (CMS), new reconstruction algorithms, aiming for an improved performance, are being developed. For what concerns the online tracking of muons, one of the figures that is being improved is the accuracy of the transverse momentum (𝑝 𝑇 ) measurement. Machine Learning techniques have already been considered as a promising solution for this problem, as they make possible, with the use of more information collected by the detector, to build models able to predict with an improved precision the 𝑝 𝑇 . This work aims to implement such models onto an FPGA, which promises smaller latency with respect to traditional inference algorithms running on CPU, an important aspect for a trigger system. The analysis carried out in this work will use data obtained through Monte Carlo simulations of muons crossing the barrel region of the CMS muon chambers, and compare the results with the 𝑝 𝑇 assigned by the current CMS Level 1 Barrel Muon Track Finder (BMTF) trigger system.

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“…Besides the dedicated test beam runs taken on prototypes and on final detectors prior and during chamber construction [4][5][6][7][8], chamber commissioning was performed through the following phases:…”

Section: Detector Commissioningmentioning

confidence: 99%