scholarly journals hep_tables: Heterogeneous Array Programming for HEP

2021 ◽  
Vol 251 ◽  
pp. 03061
Author(s):  
Gordon Watts
Keyword(s):  
Large Hadron Collider ◽  
Distributed Computing ◽  
Particle Physics ◽  
Hadron Collider ◽  
Declarative Programming ◽  
Data Delivery ◽  
High Luminosity ◽  
Distributed Framework ◽  
Programming Techniques ◽  
Aggregation Operations

Array operations are one of the most concise ways of expressing common filtering and simple aggregation operations that are the hallmark of a particle physics analysis: selection, filtering, basic vector operations, and filling histograms. The High Luminosity run of the Large Hadron Collider (HL-LHC), scheduled to start in 2026, will require physicists to regularly skim datasets that are over a PB in size, and repeatedly run over datasets that are 100’s of TB’s – too big to fit in memory. Declarative programming techniques are a way of separating the intent of the physicist from the mechanics of finding the data and using distributed computing to process and make histograms. This paper describes a library that implements a declarative distributed framework based on array programming. This prototype library provides a framework for different sub-systems to cooperate in producing plots via plug-in’s. This prototype has a ServiceX data-delivery sub-system and an awkward array sub-system cooperating to generate requested data or plots. The ServiceX system runs against ATLAS xAOD data and flat ROOT TTree’s and awkward on the columnar data produced by ServiceX.

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 High-Luminosity Large Hadron Collider (HL-LHC)

2017 ◽  
Author(s):  
G. Apollinari ◽  
I. Béjar Alonso ◽  
O. Brüning ◽  
P. Fessia ◽  
M. Lamont ◽  
...  
Keyword(s):  
Large Hadron Collider ◽  
Hadron Collider ◽  
High Luminosity

scholarly journals Dark Matter Searches at Colliders

2018 ◽  
Vol 68 (1) ◽  
pp. 429-459 ◽  
Author(s):  
Antonio Boveia ◽  
Caterina Doglioni
Keyword(s):  
Dark Matter ◽  
Large Hadron Collider ◽  
Particle Physics ◽  
Hadron Collider ◽  
The Future ◽  
Particle Dark Matter ◽  
Near Future

Colliders, among the most successful tools of particle physics, have revealed much about matter. This review describes how colliders contribute to the search for particle dark matter, focusing on the highest-energy collider currently in operation, the Large Hadron Collider (LHC) at CERN. In the absence of hints about the character of interactions between dark matter and standard matter, this review emphasizes what could be observed in the near future, presents the main experimental challenges, and discusses how collider searches fit into the broader field of dark matter searches. Finally, it highlights a few areas to watch for the future LHC program.

scholarly journals Simulations of fast crab cavity failures in the high luminosity Large Hadron Collider

2014 ◽  
Vol 17 (5) ◽  
Author(s):  
Bruce Yee-Rendon ◽  
Ricardo Lopez-Fernandez ◽  
Javier Barranco ◽  
Rama Calaga ◽  
Aurelien Marsili ◽  
...  
Keyword(s):  
Large Hadron Collider ◽  
Hadron Collider ◽  
High Luminosity

scholarly journals Distributed Computing for Small Experiments

2018 ◽  
Vol 182 ◽  
pp. 02010
Author(s):  
Daniela Bauer
Keyword(s):  
Large Hadron Collider ◽  
Distributed Computing ◽  
Hadron Collider

The large Large Hadron Collider experiments have successfully used distributed computing for years. The same infrastructure yields large opportunistic resources for smaller collaborations. In addition, some national grid initiatives make dedicated resources for small collaborations available. This article presents an overview of the services available and how to access them, including an example of how small collaborations have successfully incorporated distributed computing into their workflows.

scholarly journals The Large Hadron Collider: lessons learned and summary

2012 ◽  
Vol 370 (1961) ◽  
pp. 995-1004 ◽  
Author(s):  
Chris Llewellyn Smith
Keyword(s):  
Large Hadron Collider ◽  
Energy Range ◽  
Particle Physics ◽  
Hadron Collider ◽  
Historical Context ◽  
Lessons Learned ◽  
New Era ◽  
New Phenomena

The Large Hadron Collider (LHC) machine and detectors are now working superbly. There are good reasons to hope and expect that the new domain that the LHC is already exploring, operating at 7 TeV with a luminosity of 10 33  cm −2  s −1 , or the much bigger domain that will be opened up as the luminosity increases to over 10 34 and the energy to 14 TeV, will provide clues that will usher in a new era in particle physics. The arguments that new phenomena will be found in the energy range that will be explored by the LHC have become stronger since they were first seriously analysed in 1984, although their essence has changed little. I will review the evolution of these arguments in a historical context, the development of the LHC project since 1984, and the outlook in the light of reports on the performance of the machine and detectors presented at this meeting.

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