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Update and Issues of the AWAKE Project at CERN

Update and Issues of the AWAKE Project at CERN. Outline. Recent Evolution Time Scale and Planning Update and Issues for the Experimental Area Short summary of other challenges at CERN Summary. Recent Evolution. 25 -26 June 2013: SPSC meeting

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Update and Issues of the AWAKE Project at CERN

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  1. Update and Issues of the AWAKE Project at CERN

  2. Outline • Recent Evolution • Time Scale and Planning • Update and Issues for the Experimental Area • Short summary of other challenges at CERN • Summary

  3. Recent Evolution • 25-26 June 2013: SPSC meeting • SPSC recommends AWAKE proposal for approval. • 31 July 2013: IEFC meeting • Present detailed planning and manpower needs as agreed with various groups • 28 August 2013: Research Board • Approval of the AWAKE experiment • 16 September 2013: Kick-Off meeting at CERN for the CERN AWAKE Project

  4. CERN AWAKE Project Structure A& T sector management: Engineering, Beams, Technology Departments CERN AWAKE Project Project leader: Edda Gschwendtner Deputy: Chiara Bracco Injectors and Experimental Facilities Committee (IEFC) WP4: Experimental Area Edda Gschwendtner WP1: Project Management Edda Gschwendtner WP3: Primary beam-lines Chiara Bracco WP2: SPS beam Elena Chapochnikova • WP1 and WP2: Depending on progress and need: dedicated meetings • WP3 and WP4: regular weekly meetings, 1-2 dedicated topics, general issues and updates • ‘AWAKE Performance Meeting’: bi-weekly meetings: RP issues, electron trapping in plasma, material studies for windows, laser issues,…

  5. WP1 Project Management • Define the project responsibility matrix, the work breakdown structure, • Define the schedule and the resources (manpower and material, including spending profile) • Control the resource spending and work progress • Quality control, documentation and final acceptance • Safety file and safety officer. Work Breakdown Structure • Issue: • A fixed budget is allocated for the CERN AWAKE project. • This corresponds to what we have asked for in the Design Report. • In order to have first beam in September 2016, the schedule is very tight!! Also we have to consider the general CERN schedule for the accelerators!

  6. Time-Scale for AWAKE Installation Commissioning Study, Design, Procurement, Component preparation Data taking Data taking Installation Fabrication Modification, Civil Engineering and installation Studies, design Commissioning Study, Design, Procurement, Component preparation LS1 (Long Shutdown 1) LS2 18 months • Define strategy for • electron source and beam

  7. First Preliminary Planning for Proton Beam to Plasma 2017 2016 2013 2014 2015 M. Bernardini, S. Girod Cleaning; Removal of shielding, plugs, existing equipment Installation: p-beam magnets Install.: BI Install.: Vacuum Integration and mechanical design Cabling Civil engineering: Electron beam and laser tunnel CV Experimental area installation: Plasma cell, BI, vacuum, exp. instrumentation, … Install.: Laser 1st Critical Milestone: April/June 2014: start with digging! Commissioning End Sept. 2016: p-beam for physics Electron beam

  8. WP4 Experimental AreaWork Breakdown Structure • Urgent issues • Preparation for CNGS area • cleaning, emptying • Integration of experiment • Civil engineering: • laser & electron tunnel • Advance with other ongoing studies: • Vacuum system • Window studies • Decay tube windows • Radiation protection studies: • Beam losses, prompt doses, activation, radiation to electronics • Safety files • Ventilation system • Many more…!

  9. Preparation of CNGS for AWAKE CNGS AWAKE

  10. CNGS Preparation for AWAKE Today – June 2014 Yes, work has started!!

  11. Layout of the AWAKE Experiment

  12. Removal of CNGS Shielding Plugs (~20 tons) • Height not more than 1900mm. • Development of special wheels for the shielding blocks. • Removal with a 30 ton tractor. C. Bertone

  13. CNGS Shielding Plugs

  14. Experimental Area Area where electron spectrometer will be installed. Magnets, shielding, etc… will be removed.

  15. Integration – Laser Scan of the Facility

  16. Electron Tunnel (Beginning October 2013) C. Magnier 1m

  17. Electron Tunnel (Beginning December 2013) C. Magnier, F. Galleazzi • Issue: • Start digging tunnel mid 2014! • Define electron tunnel specs in January 2014. • Specifications for electron beam must be frozen! • A lot of work for integration, transport, beam instrumentation, magnets, services, etc…. C. Magnier, F. Galleazzi

  18. Electron Beam Tunnel 1st floor: Cooling & Ventilation Proton tunnel Electron source C. Magnier, F. Galleazzi

  19. Electron Beam Tunnel C. Magnier, F. Galleazzi • Issues: • All drawings will be implemented into CERN system. •  Also from the experiment! • Use CERN standard: • CATIA, step files! C. Magnier, F. Galleazzi

  20. Electron Source Area S. Girod, V. Clerc PHIN injector used as baseline here. No services yet included. Tight area.

  21. Electron Source Area S. Girod, V. Clerc • Issue: • We need to know more about the electron source to advance with integration studies and to consider all services needed. • Space constraints!  Fit the electron source to the AWAKE needs!

  22. Laser Beam Line  See Mikhail’s talk, Thu 5 Dec, 9:30 • Issues: • Placement of optical compressor and telescope needs to be clear before defining the exact position of the drilling.  urgently needed! • Vacuum components – up to 10-8 mbar?

  23. Laser Beam Line

  24. Radiation Protection Studies • Damage to electronics • Air activation • Accident scenarios • Plasma cell simulations CNGS target chamber HEH fluence per year Accident scenario Target Horn Reflector Beam He Tube1 He Tube2 Decay Tube e- gallery 3 mm steel 6 m long S. Cipiccia, E. Feldbaumer  See Silvia’s talk, Thu 5 Dec, 9:10 • Issues: • Consequences on material choice, shielding, geometry of plasma cell, instrumentation and electronics • Design ventilation system accordingly! • Remove collimator in front of target.

  25. Decay Tube Window T. Manousis, A. PerilloMarcone Decay tube: 994m long, d= 2.45m, vacuum! Decay tube window: 3mm thick Ti, d=1.4m Shutter: 3cm thick iron, d=1.45m • Maximum energy deposited at decay tube window (shutter): 0.2 (2.5) J/cm3/pulse • Maximus stress in window below yield strength of Ti • Very low temperature increase in window and shutter due to beam Shutter AWAKE experiment ~1100m AWAKE beam dump Shutter Steady State + 1 Pulse Max Temp.= 23.875 oC • Result: • We can leave the shutter closed even when we have beam. • Leave vacuum inside the decay tunnel (less air - contamination) • If ever (!!) we have access during beam, OK from decay tube safety point of view.

  26. WP3 Proton and Electron Beam Line 10 m • Proton and laser beam integration • Sector window between SPS and AWAKE Vacuum • Electron beam line design (with different parameters) • Common electron and proton beam line 40 mm 40 mm ~52 mm • Issues: • Extremely challenging with the current beam specifications to squeeze the electron and proton beam into the plasma cell! • Beam diagnostics around the plasma cell not clear. • Rethink plasma cell design (size)? • Or keep firm parameters for electron gun! • Facility geometry gives limits to electron source design! • See Francesco’s talk, Thu 5 Dec, 8:30 • See Chiara’s talk, Thu 5 Dec, 8:50

  27. WP2 SPS Beam Work Breakdown Structure Electron bunch (1s~5ps) • Example of Sub-WP: RF synchronization of proton, electron, laser beam. • Electrons from RF gun driven by a laser pulse derived from same laser system as used for ionization.  Synchronization between laser pulse and electron beam at < 1ps can be achieved. • Synchronization of proton beam w.r.t. laser beam at ~100ps level is desired:  SPS RF must re-phase and lock to a stable mode-locker frequency reference from laser system. gas Plasma  See Andy’s talk, Thu 5 Dec, 9:50 proton bunch (1s~300ns) laser pulse (30fs) Issue: Close collaboration needed with experiment, laser experts + RF, timing, beam transport…

  28. Summary • We install an experiment into an existing facility – and not a facility around an experiment! • Many constraints. • Need well-defined specifications and strategies! • E.g. what is the strategy for the electron beam? • E.g. where will be the laser bunch compressor installed? • E.g. what is the electron spectrometer layout? • AWAKE is an accelerator R&D experiment! • Beam is not simply delivered and the experiment is not stand-alone with its own electronics, readout, etc… • The experiment is fully integrated into the accelerator complex • Very close collaboration with institutes that build equipment is needed • CERN standards must be used! • Drawings: CATIA, step-files. • Software, DAQ  see Roman’s talk, Thu 5 Dec, 14:00! • Interface issues • Advantage: profit from CERN support.

  29. WP3 Proton and Electron Beam LineWork Breakdown Structure

  30. CERN Responsibilities as in the Mandate CERN is host institute of the AWAKE experiment: • Design, installation, commissioning, operation, maintenance and commissioning of the AWAKE facility, including safety matters during all phases of AWAKE, + dismantling. This includes: • Proton and electron beam line, laser transport lines, experimental area, associated services, civil engineering. • Necessary modifications of the civil engineering and general services of the AWAKE facility. • Optimization of the beam parameters. Production of the AWAKE proton beam in the SPS and in the transfer to the experimental area, within specifications. • Electron beam studies in the plasma cell. • Development of the diagnostic instrumentation along the beam lines and in the experimental area. • The coordination and installation of the experimental equipment delivered by the collaboration, including interface design and construction support. • The coordination of all radiation protection and safety aspects. • Coordinate the studies of all interfaces between the different systems (plasma cell, electron beam, proton beam, laser…), including studies on the measurement program • Take responsibility for all safety aspects. Prepare safety files. • Evaluate dismantling feasibility.

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