Review of the commissioning of Sector 45

Europe/Zurich
AT Auditorium (CERN)

AT Auditorium

CERN

Roberto Saban, Rudiger Schmidt
Description
Forum for discussion to improve strategies for the commissioning of the SC circuits in the next LHC Sectors
Participants
  • Adam Drozd
  • Aleksander Skala
  • Alexandr Erokhin
  • Alick Macpherson
  • Alvaro Marqueta Barbero
  • Amalia Ballarino
  • Andrea Cantone
  • Andrzej Kotarba
  • Anne FUNKEN
  • Antonio Suraci
  • Antonio Vergara Fernandez
  • Anupama KULKARNI
  • Arjan Verweij
  • Arkadiusz Gorzawski
  • BHUSHAN BARAPATRE
  • Blanco Enrique
  • Bob Flora
  • BORDRY Frédérick
  • Bozzini Davide
  • Carlos Castillo Trello
  • Carlos Fernandez Robles
  • David Nisbet
  • Dominik Dworak
  • Edward Gornicki
  • Edward Nowak
  • Eric Veyrunes
  • Fabio Follin
  • Florence Pirotte
  • gaillard hubert
  • Georges-Henry Hemelsoet
  • Gianluigi Arduini
  • Giorgio D'Angelo
  • grzegorz seweryn
  • guy crockford
  • Hubert Reymond
  • Hugues Thiesen
  • Jaromir Ludwin
  • joaquim mourao
  • Juan Casas
  • Julie Coupard
  • Kevin Priestnall
  • Knud Dahlerup-Petersen
  • Lasse Normann
  • Louis Walckiers
  • Magali GRUWE
  • Maria Paz Casas Lino
  • Markus Zerlauth
  • Mateusz Bednarek
  • Mathieu FAVRE
  • Miguel Bastos
  • Mirko Pojer
  • Nuria Catalan Lasheras
  • Oliver Bruning
  • Olivier Brunner
  • Paul collier
  • PEREIRA Louis
  • Pierre Strubin
  • Piotr Jurkiewicz
  • Reiner Denz
  • Rey Anthony
  • Reyes Alemany Fernandez
  • Richard Mompo
  • Rob van Weelderen
  • Rossano Giachino
  • Rüdiger Schmidt
  • Sandor Feher
  • Sandrine LE NAOUR
  • Siemko Andrzej
  • Simone Monzani
  • Solfaroli Camillocci Matteo
  • Stephen MYERS
  • Udo Wagner
  • Valentina Zambrano
  • Verena Kain
  • Vincent Chareyre
  • Vincent Froidbise
  • Vito Baggiolini
  • Walter Venturini Delsolaro
  • Yogendra SHETH
  • Zinour Charifoulline
    • General Overview
    • 1
      Identification of main issues appearing during the commissioning Sector 45
      - Event driven by view from operation - invitation to an open discussion - Scenarios: commissioning to 450 GeV, 2 TeV and 4 .. 6 TeV - Key dates in preparation for the next sector and outlook to planning - Discussions on improvements: what can be done in the next 3-4 weeks? - 2 shifts during 5 days versus 3 shifts during 7 days, , MPP analysis, what can be done in a nightshift – WE? Bottlenecks in manpower - Organisation: HC coordinator on a weekly basis? For coordination between sectors etc. - (written) guidelines for operators (coordination tools, conditions for powering) - Commissioning meetings efficient? How continue activities during meetings? - Follow-up by mini teams on: Automatic commissioning and controls issues, Tools required to optimize commissioning, Organisation, System upgrades and improvements
      Speaker: Roberto Saban (CERN)
      Slides
    • 2
      Powering Test Overview
      - What happens before powering tests after cooldown - Main issues that slowed us down - ELQA: Continue as for sector 45? Further optimisation of the strategy? - What has been done during the powering tests? During what time? By whom? Efficiency? - How to ensure minimization of re-commissioning 45 and to secure what has been achieved? - How to avoid that changes during the “shutdown” require re-commissioning?
      Speaker: Boris Bellesia (Politecnico di Torino)
      Slides
    • Safety and Access
    • 3
      Safety and access I
      - Electrical safety during interventions, “consignation” - Electrical safety subsectors
      Speaker: Anne Funken (CERN)
      Slides
    • 4
      Safety and access II
      - Hardware commissioning using the access system - Set the rules for access, different modes
      Speaker: Magali Gruwe (CERN)
      Slides
    • 5
      Safety and access III
      - Tunnel access during powering – what can access during powering as a function of current in the different circuits? Clear and transparent rules.
      Speakers: Mr Hugues Thiesen, Dr Karl Hubert Mess (CERN AT-MEL)
      Slides
    • Coffee-break
    • 6
      Cryo Performance & Operation
      - Availability for cryogenic system - Recovery time after quenches: what can we expect? - Operation overnight and over the weekend: is it possible? - Operation with several sectors in parallel, what will change? - Presence in the CCC - Level measurements - How to ensure a correct Helium level for operation?
      Speaker: Mr Serge CLAUDET (CERN AT ACR)
      Slides
    • Cryogenics, DFBs and current leads
    • 7
      Cryogenic conditions for powering tests
      - What can be done at what temperature? (e.g. below 2.8 K low current tests), and when can we start the tests? - Relaxed operation at reduced current (e.g. can we operate without cold compressors a magnet currents corresponding to 2 TeV)? - Table for all steps and all circuits? - Orbit correctors 60 / 120 A – what conditions? What needs to be watched by operators? - Procedure: masking of interlocks to provide CryoStart and CryoMaintain
      Speaker: Dr Andrzej SIEMKO (CERN AT-MTM)
      Slides
    • Powering, Power Converters, Quench Protection System, 600A and 13kA Energy Extraction
    • 8
      Power Converters
      - 600 A spikes during 0 V crossing and QPS system - Spikes and how to avoid them (IERROR and IEARTH) - RB power converter performance, is there an issue?
      Speakers: David Nisbet (CERN), Yves Thurel (CERN)
      Slides
    • Lunch Break
    • 9
      Quench Protection and Energy Extraction System
      - Partial heater firing if switches do not open – yes/no? - Access to the tunnel for 600 A extraction switches, can be optimised? - Firing heaters without current in the magnet circuit – Why? EMC due to other tests? - Closing switches for many circuits
      Speakers: Knud Dahlerup-Petersen (CERN), Reiner Denz (CERN AT-MEL-PM)
      Slides
    • 10
      Time for commissioning versus objectives
      - 450 GeV, 2 TeV and 5 .. 6 TeV: what circuits at what current? What can be left for later? (remember: it is always possible to bring in other circuits on the fly) - How much time is required to commission for injection, for ~2 TeV, 4-6 TeV and 7 TeV? What could be gained? What circuits could be left out? - When is tunnel access required? By whom? How to optimise it? What can be done without access to the tunnel?
      Speaker: Antonio Vergara Fernandez (Cent.de Investigac.Energeticas Medioambientales y Tecnol. (CIEMA)
      Slides
    • Powering Tests and Magnet Performance Panel
    • 11
      Procedures
      - Procedures and their realisation in sequences: can they be lighter? - EDMS approval of procedures and their changes - Analysis and approval of test steps in CCC – can it be improved?
      Speakers: Dr Nuria Catalan Lasheras (CERN), Walter Venturini Delsolaro (CERN)
      Slides
    • 12
      What quenches did we observe? What is expected?
      - What circuits? - What quenches? - Why did it quench?
      Speakers: Arjan Verweij (CERN), Robert Henry Flora (Fermi National Accelerator Lab. (Fermilab))
      Slides
    • Coffee-break
    • Post-Mortem, Logging, Sequencer, Tracking data and progress after the tests
    • 13
      Tools provided by CO
      - Status of PM system? Data gets sometimes stuck? - PM event builder - Can we become more efficient with more automatic analysis? - Coherence MTF – LSA etc. - Long tests: can one reduce the time of the test online, for example due to a long plateau? PASS TO THE NEXT STEP button. - Managing powering: better SOC names to avoid confusion? SOCs per day? - Tools for powering groups of circuits ((based on SOCs?)
      Speaker: Dr Markus Zerlauth (CERN)
      Slides
    • 14
      Tools for coordination
      - How to improve the Powering Test Visualisation tool, etc. - How to improve the planning tool (EXCEL?) Can both be merged?
      Speaker: Alvaro Marqueta Barbero (Cent. Invest. Energ. Medioamb. Tec. (CIEMAT) - Consejo Sup. de I)
      Slides
    • 15
      Feed Back
      Speakers: Alick Macpherson, LHC HWC Operators
      Slides
    • Final session
    • 16
      Summary and Discussions
      Speaker: Mr Rüdiger Schmidt (CERN)
      Slides