Author: Lonza, M.
Paper Title Page
MOC3O03 Automatic FEL Optimization at FERMI 1
 
  • G. Gaio, M. Lonza
    Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy
 
  FERMI is a seeded Free Electron Laser (FEL) located in Trieste, Italy. The machine setup and optimization is a non-trivial problem due to the high sensitivity of the FEL process to several machine parameters. In particular, the electron bunch trajectory and its spatial overlap with the seed laser beam represent one of the key aspects to optimize and then preserve during machine operation. In order to ease the FEL tuning and to guarantee a long term stability of the photon beam, a software process integrated into the feedback systems performs automatic trajectory optimization of both the seed laser and the electron beams. The algorithm implementation, the results and the operational issues are presented.  
slides icon Slides MOC3O03 [8.957 MB]  
 
WEPGF037 Data Lifecycle in Large Experimental Physics Facilities: The Approach of the Synchrotron ELETTRA and the Free Electron Laser FERMI 1
 
  • F. Billè, R. Borghes, F. Brun, V. Chenda, A. Curri, V. Duic, D. Favretto, G. Kourousias, M. Lonza, M. Prica, R. Pugliese, M. Scarcia, M. Turcinovich
    Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy
 
  Often the producers of Big Data face the emerging problem of Data Deluge. Nevertheless experimental facilities such as synchrotrons and free electron lasers may have additional requirements, mostly related to the necessity of managing the access for thousands of scientists. A complete data lifecycle describes the seamless path that joins distinct IT tasks such as experiment proposal management, user accounts, data acquisition and analysis, archiving, cataloguing and remote access. This paper presents the data lifecycle of the synchrotron ELETTRA and the free electron laser FERMI. With the focus on data access, the Virtual Unified Office (VUO) is presented. It is a core element in scientific proposal management, user information DB, scientific data oversight and remote access. Eventually are discussed recent developments of the beamline software, that holds the key role to data and metadata acquisition but also requires integration with the rest of the system components in order to provide data cataloging, data archiving and remote access. The scope of this paper is to disseminate the current status of a complete data lifecycle, discuss key issues and hint on the future directions.  
poster icon Poster WEPGF037 [1.110 MB]  
 
WEPGF038 A Flexible System for End-User Data Visualisation, Analysis Prototyping and Experiment Logbook 1
 
  • R. Borghes, V. Chenda, G. Kourousias, M. Lonza, M. Prica, M. Scarcia
    Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy
 
  Experimental facilities like synchrotrons and free electron lasers, often aim at well defined data workflows tightly integrated with their control systems. Still such facilities are also service providers to visiting scientists. The hosted researchers often have requirements different than those present in the established processes. The most evident needs are those for i) flexible experimental data visualisation, ii) rapid prototyping of analysis methods, and iii) electronic logbook services. This paper reports on the development of a software system, collectively referred to as DonkiTools, that aims at satisfying the aforementioned needs for the synchrotron ELETTRA and the free electron laser FERMI. The design strategy is outlined and includes topics regarding: dynamic data visualisation, Python scripting of analysis methods, integration with the TANGO distributed control system, electronic logbook with automated metadata reporting, usability, customization, and extensibility. Finally a use case presents a full deployment of the system, integrated with the FermiDAQ data collection system, in the free electron laser beamline EIS-TIMEX.  
poster icon Poster WEPGF038 [1.011 MB]  
 
WEPGF152 Time Travel Made Possible at FERMI by the Time-Machine Application 1
 
  • G. Strangolino, M. Lonza, L. Pivetta
    Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy
 
  The TANGO archiving system HDB++ continuously stores data over time into the historical database. The new time-machine application, a specialization of the extensively used save/restore framework, allows bringing back sets of control system variables to their values at a precise date and time in the past. Given the desired time stamp t0 and a set of TANGO attributes, the values recorded at the most recent date and time preceding or equaling t0 are fetched from the historical database. The user can examine the list of variables with their values before performing a full or partial restoration of the set. The time-machine seamlessly integrates with the well known save/restore application, sharing many of its characteristics and functionalities, such as the matrix-based subset selection, the live difference view and the simple and effective user interface.  
poster icon Poster WEPGF152 [0.443 MB]