scholarly journals A Large Ion Collider Experiment(ALICE) at the Large Hadron Collider(LHC)-Outlook beyond LHC RUN2

2015 ◽  
Vol 24 (6) ◽  
pp. 22
Author(s):  
Minjung KWEON ◽  
In-Kwon YOO
Keyword(s):  
Large Hadron Collider ◽  
Hadron Collider ◽  
Large Ion Collider ◽  
Collider Experiment

scholarly journals QUARKONIA MEASUREMENTS WITH THE CENTRAL DETECTORS OF ALICE

2007 ◽  
Vol 16 (07n08) ◽  
pp. 2484-2490 ◽  
Author(s):  
◽  
WOLFGANG SOMMER ◽  
CHRISTOPH BLUME ◽  
FREDERICK KRAMER ◽  
JAN FIETE GROSSE-OETRINGHAUS
Keyword(s):  
Large Hadron Collider ◽  
Hadron Collider ◽  
Forward Region ◽  
Proton Proton ◽  
Physics Program ◽  
Expected Performance ◽  
Central Lead ◽  
Electron Measurement ◽  
Large Ion Collider ◽  
Collider Experiment

A Large Ion Collider Experiment – ALICE will become operational with the startup of the Large Hadron Collider – LHC at the end of 2007. One focus of the physics program is the measurement of quarkonia in proton-proton and lead-lead collisions. Quarkonia states will be measured in two kinematic regions and channels: di-muonic decays will be measured in the forward region by the muon arm, the central part of the detector will measure di-electronic decays. The presented studies show the expected performance of the di-electron measurement in proton-proton and central lead-lead collisions.

scholarly journals Readout Software for the Alice Integrated Online-Offline (O2) System

2019 ◽  
Vol 214 ◽  
pp. 01041 ◽  
Author(s):  
Sylvain Chapeland ◽  
Filippo Costa
Keyword(s):  
System Performance ◽  
Modular Design ◽  
Hadron Collider ◽  
Computing System ◽  
Heavy Ion ◽  
Data Sampling ◽  
Online Data ◽  
Processing Pipeline ◽  
Large Ion Collider ◽  
Collider Experiment

ALICE (A Large Ion Collider Experiment) is a heavy -ion detector studying the physics of strongly interacting matter and the quarkgluon plasma at CERN’s LHC (Large Hadron Collider). During the second long shutdown of the LHC, the ALICE detector will be upgraded to cope with an interaction rate of 50 kHz in Pb–Pb collisions, producing in the online computing system (O2) a sustained input throughput of 3 TB/s. The readout software is in charge of the first step of data-acquisition, handling the data transferred from over 8000 detector links to PC memory by dedicated PCI boards, formatting and buffering incoming traffic until sent to the next components in the processing pipeline. On the 250 readout nodes where it runs, the software has to sustain a throughput which can locally exceed 100 Gb/s. We present the modular design used to cope with various data sources (hardware devices and software emulators), integrated with the central O2 components (logging, configuration, monitoring, data sampling, transport) and initiating the online data flow using the standard O2 messaging system. Performance considerations and measurements are also discussed.

scholarly journals Exploring color-octet scalar parameter space in minimal R-symmetric models

2020 ◽  
Vol 2020 (11) ◽  
Author(s):  
Linda M. Carpenter ◽  
Taylor Murphy ◽  
Matthew J. Smylie
Keyword(s):  
Large Hadron Collider ◽  
Parameter Space ◽  
Branching Fractions ◽  
Hadron Collider ◽  
Collider Phenomenology ◽  
Decay Channels ◽  
Color Octet ◽  
Supersymmetric Models ◽  
Three Body ◽  
Displaced Vertex

Abstract In this work we study the collider phenomenology of color-octet scalars (sgluons) in minimal supersymmetric models endowed with a global continuous R symmetry. We systematically catalog the significant decay channels of scalar and pseudoscalar sgluons and identify novel features that are natural in these models. These include decays in nonstandard diboson channels, such as to a gluon and a photon; three-body decays with considerable branching fractions; and long-lived particles with displaced vertex signatures. We also discuss the single and pair production of these particles and show that they can evade existing constraints from the Large Hadron Collider, to varying extents, in large regions of reasonable parameter space. We find, for instance, that a 725 GeV scalar and a 350 GeV or lighter pseudoscalar can still be accommodated in realistic scenarios.

scholarly journals Effect of crab cavity high order modes on the coupled-bunch stability of High-Luminosity Large Hadron Collider

2019 ◽  
Vol 22 (5) ◽  
Author(s):  
S. A. Antipov ◽  
N. Biancacci ◽  
J. Komppula ◽  
E. Métral ◽  
B. Salvant ◽  
...  
Keyword(s):  
Large Hadron Collider ◽  
Hadron Collider ◽  
High Order ◽  
High Luminosity

scholarly journals Automatic detection of transverse beam instabilities in the Large Hadron Collider

2019 ◽  
Vol 22 (11) ◽  
Author(s):  
T. E. Levens ◽  
K. Łasocha ◽  
T. Lefevre ◽  
M. Gąsior ◽  
R. Jones ◽  
...  
Keyword(s):  
Large Hadron Collider ◽  
Hadron Collider ◽  
Automatic Detection ◽  
Transverse Beam ◽  
Beam Instabilities
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