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Extraction and b eamline progress

This report details the ongoing upgrades and transitions from TT20 to the new TT26 beamline system, utilizing MBS magnets from CNGS and optimizing beam angles and bends to enhance extraction capabilities while maintaining compatibility with existing systems. Key areas include risk analysis, instrumentation upgrades, and safety considerations. Significant progress on civil engineering and electrical installations supports the project's timeline, with a focus on ensuring user input and operational readiness for beam instrumentation and cooling systems.

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Extraction and b eamline progress

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  1. Extraction and beamline progress B.Goddard TE/ABT

  2. Switch from TT20to new TT26 • Uses MBS magnets from CNGS TT41 • Replace and move 2x TT20 quadrupoles

  3. Switch from TT20to new TT26 Not compatible with LAGUNA

  4. Geometry • Updated • Same target location and angles • Optimised bends using 16 available MBN magnets (6x H, 10x tilted at 15 and 30 deg) • Split bend to maximisedistance from BA915 and BA940 Not compatible with LAGUNA

  5. Dipole bends Aiming to minimise number of large (> 1000 A) power convertors

  6. Compatibility with Laguna • SPS extraction: LSS2 changes yes, LSS1 MKP no • TT20 upgrade: yes • Switch: no (maximum 100 GeV/c) • TT26: no (maximum 100 GeV/c)

  7. Magnets and power convertors

  8. Instrumentation • Upgrades forLSS2, TT20 and new systems for TT26 defined • Need input for target and secondary beam instrumentation

  9. Access system • A lot of work still needed to define concept • Also non radiation risks (electrical, decay tube vacuum) to be considered • Risk analysis and safety file needed!

  10. Beam interlocking • Concept defined • User input lists being iterated

  11. A lot of work still needed • Power convertor types • Power cable cross-sections • Cable types and lengths • Cooling power (full project) • Detailed layout and optics of TT26 • Vacuum system element definition • Surface building space (full project) • Risk analysis and safety file (full project) • Access system definition (full project)

  12. Services needed before installation • Civil engineering completed; • Tunnel painting completed; • Electrical distribution installed and operating; • AUGs installed and operational; • Lighting installed and operating; • Cable trays installed and cables pulled; • Leaky feeder cables installed and operational for underground GSMs; • Ventilation completed (for personnel access at least); • All underground safety systems installed and completed • smoke detection, fire extinguishers, safety markings, emergency lighting, …; • New access shafts, personnel and material lifts installed and operational; • Access system installed and tested, or temporary shielding in place; • New or extended auxiliary surface buildings completed and installed with all services;

  13. Schedule feasibility • Main risks are: • Infrastructure preparation • Civil engineering, cabling, cooling, ventilation, … • New beam instrumentation • Large aperture BPM contract to launch 2013 • New power convertors • 2 convertors needed for TT26 dipoles (2000 and 4000 A), for which no up-to-date design yet exists • Installation interleaved with SPS/NA operation • Work needed for end of LS1, which will involve a lot of CERN design and workshop effort • MANPOWER

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