# IT Posters

2017-07-24
10:10
Publication Life Cycle at CERN Document Server
 Reference: Poster-2017-593 Keywords:  Open Repositories  Invenio  CDS Created: 2017. -1 p Creator(s): Witowski, Sebastian; Gonzalez Lopez, Jose Benito; Costa, Flavio; Gabancho, Esteban; Marian, Ludmila [...] This presentation guides listeners through all the stages of publication life cycle at CERN Document Server, from the ingestion using one of the various tools, through curation and processing, until the data is ready to be exported to other systems. It describes different tools that we are using to curate the incoming publications as well as to further improve the existing data on CDS. The second part of the talk goes through various challenges we have faced in the past and how we are going to overcome them in the new version of CDS. Related links:Open Repositories © CERN Geneva Access to file

2017-07-17
17:30
Python at CERN
 Reference: Poster-2017-592 Keywords:  Python  CERN  PyROOT  SWAN  Invenio  Indico Created: 2017. -1 p Creator(s): Witowski, Sebastian The Large Hadron Collider at CERN is producing 600 million collisions every second. Only 1 in a million collisions is interesting. It requires a fast programming language to analyze and filter this amount of data. Is Python such a language? No, it’s not. Does it mean there is no place for Python in one of the largest scientific facilities in the world? Quite the contrary. The ease of use and a very low learning curve makes Python a perfect programming language for many physicists and other people without the computer science background. CERN does not only produce large amounts of data. The interesting bits of data have to be stored, analyzed, shared and published. Work of many scientists across various research facilities around the world has to be synchronized. This is the area where Python flourishes. And with CERN’s pursuit to create and use open source software, many interesting projects were born. To facilitate the analysis of data, ROOT framework [https://root.cern.ch/] was created. It’s a C++ framework focused on big data processing, statistical analysis, visualization and storage. It has been around for more than 20 years, but since nowadays more and more scientists have at least basic Python knowledge, the PyROOT project [https://root.cern.ch/pyroot] was born. PyROOT is a Python extension module that allows users to interact with ROOT from Python interpreter. It combines the ease of use of Python with the powerful capabilities of the ROOT framework. All the discoveries, small and big ones, results in thousands of publications that has to go through the whole publication workflow. For that purpose, a digital library framework called Invenio was created [http://invenio-software.org/]. It can be used to easily build your own fully customized digital library, institutional repository, multimedia archive, or research data repository on the web. Some examples of websites build with Invenio are: https://zenodo.org/, https://cds.cern.ch/ or https://analysispreservation.cern.ch/. Another of CERN’s missions is to share the knowledge, and that can be done through various lectures, workshops and conferences. All those events can easily be organized with the help of Indico [http://indico-software.org/]. Indico comes also with a room booking module and can be easily integrated with various collaborative tools. Related links:EuroPython 2017 © CERN Geneva Access to files

2017-07-05
17:28
Using Invenio for managing and running open data repositories
 Reference: Poster-2017-590 Created: 2017. -1 p Creator(s): Simko, Tibor; Kuncar, Jiri; Nielsen, Lars Holm We present how a research data repository manager can build custom open data solutions to ingest, describe, preserve, and disseminate the open research environments, datasets and software using the Invenio digital library framework. We discuss a concrete use case example of the CERN Open Data and Zenodo services, describing technological challenges in preparing large sets of data for general public. We address the questions of efficient linking and sharing of large quantities of data without unnecessary duplication on the backend, the role of the file transfer protocols, as well as the means to visualise data to make it more accessible and interactive for general public. The technological challenges and discussed solutions can be applied to any research discipline outside the domain of particle physics. © CERN Geneva Access to files

2017-06-12
14:12
CDSLabs: Towards the Next Generation CERN Institutional Repository
 Reference: Poster-2017-589 Keywords:  Collaborative tools  Invenio  CDS  CERN Document Server  Institutional Repository Created: 2016. -1 p Creator(s): Marian, Ludmila; Gabancho, Esteban; Tzovanakis, Harris; Witowski, Sebastian CERN Document Server (CDS) is the CERN Institutional Repository, playing a key role in the storage, dissemination and archival for all research material published at CERN, as well as multimedia and some administrative documents. As the CERN’s document hub, it joins together submission and publication workflows dedicated to the CERN experiments, but also to the video and photo teams, to the administrative groups, as well as outreach groups. In the past year, Invenio, the underlying software platform for CDS, has been undergoing major changes, transitioning from a digital library system to a digital library framework, and moving to a new software stack (Invenio is now built on top of the Flask web development framework, using Jinja2 template engine, SQLAlchemy ORM, JSONSchema data model, and Elasticsearch for information retrieval). In order to reflect these changes on CDS, we are launching a parallel service, CDSLabs, with the goal of offering our users a continuous view of the reshaping of CDS, as well as increasing the feedback from the community in the development phase, rather than after release. © CERN Geneva Access to files

2015-09-18
15:47
LHCb's Time-Real Alignment in RunII
 Reference: Poster-2015-506 Keywords:  LHCb Created: 2015. -1 p Creator(s): Batozskaya, Varvara LHCb has introduced a novel real-time detector alignment and calibration strategy for LHC Run 2. Data collected at the start of the fill will be processed in a few minutes and used to update the alignment, while the calibration constants will be evaluated for each run. This procedure will improve the quality of the online alignment. Critically, this new real-time alignment and calibration procedure allows identical constants to be used in the online and offline reconstruction, thus improving the correlation between triggered and offline selected events. This offers the opportunity to optimise the event selection in the trigger by applying stronger constraints. The required computing time constraints are met thanks to a new dedicated framework using the multi-core farm infrastructure for the trigger. The motivation for a real-time alignment and calibration of the LHCb detector is discussed from both the operational and physics performance points of view. Specific challenges of this novel configuration are discussed, as well as the working procedures of the framework and its performance. Related links:Conference Poster LHCP2015 © CERN Geneva Access to files

2015-08-26
10:04
B → D*τν at LHCb
 Reference: Poster-2015-503 Created: 2015. -1 p Creator(s): Mendes Gandelman, Miriam The decay B → D*τν is sensitive to new couplings, like those generated by charged Higgses. A 3σ discrepancy between the measured rate and the SM prediction has been reported by Babar. The first measurement performed at a hadron collider is presented. Related links:LHCb poster © CERN Geneva Access to files

2015-04-17
11:21
CERN Document Server
 Reference: Poster-2015-485 Keywords:  CDS  Multimedia  CHEP  CHEP2015  preserve  edit  share Created: 2015. -1 p Creator(s): Le Meur, Jean-Yves; Marian, Ludmila; Kasioumis, Nikos; Gabancho, Esteban; Witowski, Sebastian [...] CERN Document Server, multimedia poster for CHEP2015 conference. Related links:CHEP2015 © CERN Geneva Access to filesAccess to files

2015-03-11
11:40
$\sin(2\beta)$ with $B^0 \rightarrow\!J/\!\psi K_\text{S}$ at the LHCb experiment
 Reference: Poster-2015-482 Keywords:  LHCb Created: 2015. -1 p Creator(s): Niet, Ramon The poster presents the recent measurement of $\sin(2\beta)$ using $B^0$ decays to the $J/\!\psi K_\text{S}$ final state. The measurement is based on a dataset corresponding to an integrated luminosity of 3.0$\,\text{fb}^{-1}$ collected with the LHCb experiment in proton-proton collisions at center-of-mass energies of 7 and 8 TeV. To control penguin pollutions in the determination of $\sin(2\beta)$, $B_s^0$ decays to the same final state can be analysed. The results of the corresponding analysis are presented as well. Related links:LHCC conference poster © CERN Geneva Access to files

2015-02-12
13:19
Indico
 Reference: Poster-2015-466 Created: 2012. -1 p Creator(s): Ferreira, Pedro Indico was born as a European project. In 2004, CERN became the sole owner of the project and decided to further extend its capabilities, enabling CERN users to manage lectures and meetings as well. This allowed Indico to replace the 'CERN Agenda' application. In 2007, a Room Booking module was added, thus allowing CERN users to book their rooms on-line. Indico became, in 2009, CERN's hub for collaborative tools, empowering collaborations such as the LHC and its experiments with video conferencing and chatting capabilities. Since then, several other features have been developed, such as a full-fledged paper reviewing module for conferences and a powerful HTTP API. © CERN Geneva Access to files

2015-02-11
16:02
The keys to CERN conference rooms - Managing local collaboration facilities in large organisations
 Reference: Poster-2015-465 Created: 2013. -1 p Creator(s): Baron, T; Domaracky, M; Duran, G; Correia Fernandes, J; Ferreira, P [...] For a long time HEP has been ahead of the curve in its usage of remote collaboration tools, like videoconference and webcast, while the local CERN collaboration facilities were somewhat behind the expected quality standards for various reasons. This time is now over with the creation by the CERN IT department in 2012 of an integrated conference room service which provides guidance and installation services for new rooms (either equipped for video-conference or not), as well as maintenance and local support. Managing now nearly half of the 250 meeting rooms available on the CERN sites, this service has been built to cope with the management of all CERN rooms with limited human resources. This has been made possible by the intensive use of professional software to manage and monitor all the room equipment, maintenance and activity. This paper will focus on presenting these packages, either off-the-shelf commercial products (asset and maintenance management tool, remote audiovisual equipment monitoring systems, local automation devices, new generation touch screen interfaces for interacting with the room) when available or locally developed integration and operational layers (generic audiovisual control and monitoring framework) and how they help overcoming the challenges presented by such a service. The aim is to minimise local human interventions while preserving the highest service quality and placing the end user back to the center of this collaboration platform. © CERN Geneva Access to files