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14 th LIU-SPS Coordination Meeting

14 th LIU-SPS Coordination Meeting. Update on the renovation of the 200 MHz RF system . Cavities redistribution. 2011 : 4 cavities 2 x 4 sections 2 x 5 sections + 3 spare sections. 2018 : 6 cavities 2 x 4 sections 4 x 3 sections + 1 spare section.

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14 th LIU-SPS Coordination Meeting

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  1. 14th LIU-SPSCoordination Meeting Update on the renovation of the 200 MHz RF system

  2. Cavities redistribution • 2011 : 4 cavities 2 x 4 sections 2 x 5 sections + 3 spare sections • 2018 : 6 cavities 2 x 4 sections 4 x 3 sections + 1 spare section Courtesy of Elena Shaposhnikova 14th LIU-SPS Coordination Meeting

  3. First upgrade: Present amplifiers Tetrodes: Present lifetime statistics, operating ~650 kW cw: RS2004 : 20’000 hrs : 6 tubes per year YL1530 : 25’000 hrs : 16 tubes per year HVPS need a full re-cabling and air cooling improvement to allow higher pulsed mode It is planned to do ‘pre-modifications’ during next Xmas stop and to test new configuration during a devoted MD in 2012 14th LIU-SPS Coordination Meeting

  4. New RF power plant • New RF Amplifier • New RF Building • LSS3 Tunnel integration New RF Building 1 mW 1.7 MW RF amplifier Coaxial transmission line 150 meters 1 mW 1.7 MW RF amplifier Accelerating cavity Accelerating cavity 14th LIU-SPS Coordination Meeting

  5. 1.7 MW amplifier, i.e 1.4 MW cavity • To have 1.4 MW available at the cavity input, 1.7 MW at the Final output are needed • A major improvement to present systems would be to have individual SSA drivers per PA • Taking advantage of the long experience we have with tetrodes and combiners, the solution will be 16 x PAs combined through 3 dB combiners • Four contracts : • Drivers (SSA) • Finals (SSA or Tetrodes) • Combiners (3 dB above 100 kW) • Transmission lines (coaxial, 345 mm outer) From Beam Control 1/16 splitter Drivers 16 SSA Final 16 PAs 1.7 MW -0.6 dB total 3 dB combiners and power loads 1.5 MW 120 m and 180 m Coaxial lines -0.2 dB 1.4 MW To cavity input 120 m away 14th LIU-SPS Coordination Meeting

  6. 2018 : two new power amplifiers • Pulse mode: 1.7 MW max (10 µs / 43 kHz) • Average: 850 kW (thermal limitation) • Must be reliable: • 24/24 hours • 300/365 days (2 months winter Technical stop AND a 1 day stop every 8 weeks) • Minimum 20 years of operation, (3 years of operation + 1 year off cycle) • Qualified solution must have demonstrated to be reliable underscientific operation (not only broadcast operation) • 2 x 1.7 MW Klystron • 2 x 4 x 450 kW Diacrodes • 2 x 8 x 225 kW IOTs • 2 x 8 x 225 kW tetrodes • Equivalent to ‘Siemens’ • 2 x 16 x 106 kW tetrodes • Equivalent to ‘Philips’ • 2 x 2048 x 830 W SSA • Equivalent to ‘SOLEIL’ 14th LIU-SPS Coordination Meeting

  7. 16 Tetrodesvs 2048 SSA • Tetrodes tube costs over 20 years will be added : • 20 years * 3/4 * 335 * 24 * 16 * 2 = 3’859’200 total hours • With 20’000 hours per tube = ~ 200 tubes • SSA : • + 20% to 25% additional transistors (not module) • Individual circulators are mandatory • Wall plug efficiency will be part of the adjudication • HVPS included (Tetrodes) • Losses in all SSA combiners, circulators and loads included 16 x 106 kW Tetrodes 16 x 128 x 830 W SSA 1.7 MW 14th LIU-SPS Coordination Meeting

  8. SSA vs Tetrodes • First contract : SSA Drivers • Two options : • 16 x 1.1 kW • 16 x 1.1 kW x 8 • Second contract : Finals • Two options : • 16 x 1.1 kW + SSA • 16 x 1.1 kW x 8 + Tubes • KT too difficult and too long to be involved • No SSA prototyping • DRs done (Drivers and Finals) • Two MS expected by end of 2011 • Drivers IT March 2012 • Finals IT September 2012 • Taking into account Drivers 14th LIU-SPS Coordination Meeting

  9. New RF building • Only possible location is between two existing buildings (BA3 and BB3) • Maximum ‘RF’ foot print will be 2x450m2 • Whatever the solution, SSA or Tetrodes, the same building • Some difficulties with BB3 transformers (Oil vs Cast resin; 12 Tons vs 24 Tons) • New place is being agreed • Distance between BA3 air ventilation and new building at its minimum 14th LIU-SPS Coordination Meeting

  10. Transport area 2011 2013 2360 LSS3 - LSS3 + 14th LIU-SPS Coordination Meeting

  11. LSS3 Tunnel integration : LS1 ? • Three new cavity sections : ~ 3 years • Measure • Build new devices • Proceed to power tests • New power couplers : ~ 4-5 years • More power and shorter -> new design • Prototyping and tests (resonant ring) • Series and pre-conditioning of 24 couplers + spares • New amplifiers : ~ 5 years • New building • Long duration tests • Impossible to re-arrange cavities within LS1 • Clean old cables in 314 and 321 • Move pickups in 314 and integrate new kicker in 321 • Install coaxial transmission lines 14th LIU-SPS Coordination Meeting

  12. Draft schedule Year 1 Year 2 Year 3 Year 4 Year 5 Year 6 Year 7 2011 2012 2013 2018 2014 2015 2016 2017 Cavities re-arrangement within a LS ( > 6 months) RF : Studies (amplifiers, couplers, cavities) Tendering MS Build new hardware Install Tunnel : Studies Commissioning Build New hardware Installation phase 2 (cavities + pickups + CV + EL + vacuum) Installation phase 1 (pickups + dampers + EL + coax lines …) Building: Studies Authorizations Building Services Services 14th LIU-SPS Coordination Meeting

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