Keyword: FEL
Paper Title Other Keywords Page
MOPMU001 Software and Capabilities of the Beam Position Measurement System for Novosibirsk Free Electron Laser electron, pick-up, controls, software 422
  • S.S. Serednyakov, E.N. Dementyev, A.S. Medvedko, E. Shubin, V.G. Tcheskidov, N. Vinokurov
    BINP SB RAS, Novosibirsk, Russia
  The system that measures the electron beam position in Novosibirsk free electron laser with the application of electrostatic pick-up electrodes is described. The measuring hardware and main principles of measurement are considered. The capabilities and different operation modes of this system are described. In particular, the option of simultaneous detection of accelerated and decelerated electron beams at one pick-up station is considered. Besides, the operational features of this system at different modes of FEL performance (the 1st, 2nd, and 3rd stages) are mentioned.  
poster icon Poster MOPMU001 [0.339 MB]  
MOPMU021 Control System for Magnet Power Supplies for Novosibirsk Free Electron Laser controls, power-supply, operation, software 480
  • S.S. Serednyakov, B.A. Dovzhenko, A.A. Galt, V.R. Kozak, E.A. Kuper, L.E. Medvedev, A.S. Medvedko, Y.M. Velikanov, V.F. Veremeenko, N. Vinokurov
    BINP SB RAS, Novosibirsk, Russia
  The control system for the magnetic system of the free electron laser (FEL) is described. The characteristics and structure of the power supply system are presented. The power supply control system based on embedded intelligent controllers with the CAN-BUS interface is considered in detail. The control software structure and capabilities are described. Besides, software tools for power supply diagnostics are described.  
poster icon Poster MOPMU021 [0.291 MB]  
TUDAUST02 Status Report of the FERMI@Elettra Control System controls, TANGO, real-time, electron 589
  • M. Lonza, A. Abrami, F. Asnicar, L. Battistello, A.I. Bogani, R. Borghes, V. Chenda, S. Cleva, A. Curri, M. De Marco, M.F. Dos Santos, G. Gaio, F. Giacuzzo, G. Kourousias, G. Passos, R. Passuello, L. Pivetta, M. Prica, M. Pugliese, C. Scafuri, G. Scalamera, G. Strangolino, D. Vittor, L. Zambon
    ELETTRA, Basovizza, Italy
  Funding: The work was supported in part by the Italian Ministry of University and Research under grants FIRB-RBAP045JF2 and FIRB-RBAP06AWK3
FERMI@Elettra is a new 4th-generation light source based on a seeded Free Electron Laser (FEL) presently under commissioning in Trieste, Italy. It is the first seeded FEL in the world designed to produce fundamental output wavelength down to 4 nm with High Gain Harmonic Generation (HGHG). Unlike storage ring based synchrotron light sources that are well known machines, the commissioning of a new-concept FEL is a complex and time consuming process consisting in thorough testing, understanding and optimization, in which a reliable and powerful control system is mandatory. In particular, integrated shot-by-shot beam manipulation capabilities and easy to use high level applications are crucial to allow an effective and smooth machine commissioning. The paper reports the status of the control system and the experience gained in two years of alternating construction and commissioning phases.
slides icon Slides TUDAUST02 [8.064 MB]  
WEBHMUST01 The MicroTCA Acquisition and Processing Back-end for FERMI@Elettra Diagnostics controls, diagnostics, interface, timing 634
  • A.O. Borga, R. De Monte, M. Ferianis, G. Gaio, L. Pavlovič, M. Predonzani, F. Rossi
    ELETTRA, Basovizza, Italy
  Funding: The work was supported in part by the Italian Ministry of University and Research under grants FIRB-RBAP045JF2 and FIRB-RBAP06AWK3
Several diagnostics instruments for the FERMI@Elettra FEL require accurate readout, processing, and control electronics; together with a complete integration within the TANGO control system. A custom developed back-end system, compliant to the PICMG MicroTCA standard, provides a robust platform for accommodating such electronics; including reliable slow control and monitoring infrastructural features. Two types of digitizer AMCs have been developed, manufactured, tested and successfully commissioned in the FERMI facility. The first being a fast (160Msps) and high-resolution (16 bits) Analog to Digital and Digital to Analog (A|D|A) Convert Board, hosting 2 A-D and 2 D-A converters controlled by a large FPGA (Xilinx Virtex-5 SX50T) responsible also for the fast communication interface handling. The latter being an Analog to Digital Only (A|D|O), derived from A|D|A, with an analog front-side stage made of 4 A-D converters. A simple MicroTCA Timing Central Hub (MiTiCH) completes the set of modules necessary for operating the system. Several TANGO servers and panels have been developed and put in operation with the support of the controls group. The overall system's architectures, with different practical application examples, together with the specific AMCs' functionalities, are presented. Impressions on our experience on the field using the novel MicroTCA standard are also discussed.
slides icon Slides WEBHMUST01 [2.715 MB]  
WEPMU001 Temperature Measurement System of Novosibirsk Free Electron Laser vacuum, controls, operation, microtron 1044
  • S.S. Serednyakov, B.A. Gudkov, V.R. Kozak, E.A. Kuper, P.A. Selivanov, S.V. Tararyshkin
    BINP SB RAS, Novosibirsk, Russia
  This paper describes the temperature-monitoring system of Novosibirsk FEL. The main task of this system is to prevent the FEL from being overheated and its individual components from being damaged. The system accumulates information from a large number of temperature sensors installed on different parts of the FEL facility, which allows measuring the temperature of the vacuum chamber, cooling water, and magnetic elements windings. Since the architecture of this system allows processing information not only from temperature sensors, it is also used to measure, for instance, vacuum parameters and some parameters of the cooling water. The software part of this system is integrated into the FEL control system, so readings taken from all sensors are recorded to the database every 30 seconds.  
poster icon Poster WEPMU001 [0.484 MB]  
THBHMUST04 The Software Improvement Process – Tools and Rules to Encourage Quality software, operation, controls, feedback 1212
  • K. Sigerud, V. Baggiolini
    CERN, Geneva, Switzerland
  The Applications section of the CERN accelerator controls group has decided to apply a systematic approach to quality assurance (QA), the "Software Improvement Process", SIP. This process focuses on three areas: the development process itself, suitable QA tools, and how to practically encourage developers to do QA. For each stage of the development process we have agreed on the recommended activities and deliverables, and identified tools to automate and support the task. For example we do more code reviews. As peer reviews are resource-intensive, we only do them for complex parts of a product. As a complement, we are using static code checking tools, like FindBugs and Checkstyle. We also encourage unit testing and have agreed on a minimum level of test coverage recommended for all products, measured using Clover. Each of these tools is well integrated with our IDE (Eclipse) and give instant feedback to the developer about the quality of their code. The major challenges of SIP have been to 1) agree on common standards and configurations, for example common code formatting and Javadoc documentation guidelines, and 2) how to encourage the developers to do QA. To address the second point, we have successfully implemented 'SIP days', i.e. one day dedicated to QA work to which the whole group of developers participates, and 'Top/Flop' lists, clearly indicating the best and worst products with regards to SIP guidelines and standards, for example test coverage. This paper presents the SIP initiative in more detail, summarizing our experience since two years and our future plans.  
slides icon Slides THBHMUST04 [5.638 MB]