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Status and Plans of the SPL study

Status and Plans of the SPL study. R. Garoby – 17 April, 2013. 3 rd Open Collaboration meeting on Superconducting Linacs for High Power Proton Beams (SLHiPP-3) April 17-18, 2013 Louvain-la- Neuve. OUTLINE Recent progress Planning New subjects of investigation Final word. F.

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Status and Plans of the SPL study

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  1. Status and Plans of the SPL study R. Garoby – 17 April, 2013 3rd Open Collaboration meeting on Superconducting Linacs for High Power Proton Beams (SLHiPP-3) April 17-18, 2013 Louvain-la-Neuve

  2. OUTLINE • Recent progress • Planning • New subjects of investigation • Final word F

  3. Progress with Linac4 Infrastructure • Impressive amount of work in 2011/12 • Electrical distribution and CV infrastructure completed • Cabling completed: all cables ready to be connected • Waveguides and circulators installed • Installation of klystrons progressing (50% achieved) • Installation of modulators starting soon 3 SLHiPP-3

  4. RFQ and 3 MeV test place are in operation! The RFQ not only focuses and accelerates the beam as required, but so far it does it in a stable, reliable and reproducible way! 4

  5. 3 MeV measurements ~11.9 mA on BCT.L4L04040 (after RFQ, straight line)  ~75% transmission 16.2mA on BCT.L4L01160 (before RFQ) BCT vs BPM crosscheck - F Roncarolo ~11.2 mA on BCT.L4L05010 (after RFQ, spectrometer line)  Most of the particles at the RFQ exit are at the right energy 5

  6. Linac4 – New Masterplan 2013/16 Masterplan, adapted to limited availability of resources during Long Shutdown 1 (2013/14) Transfer 3 MeV to Linac4 tunnel Start high-energycommissioning (12 MeV) End high-energycommissioning (160 MeV) 1 year reliability run Ready for 50 MeV protons as backup to Linac2 Ready for connection Options for connection to the PS Booster: a) Long Shutdown 2 (2018?) or b) intermediate length shut-down after end 2016 6

  7. Organization of the SPL R&D at CERN Guideline «Project-like» structure aimedat meeting the objectives of the HP-SPL R&D: • Building and testing a prototype cryomodule with 4 cavities • Updating CERN infrastructure and competence in superconducting RF technology • Preparingsubmission of future subjects of R&D [design and construction of a full-size cryomodule, high power RF sources, HIPIMS (High Power Impulse Magnetron Sputtering)…] WorkUnits • Design, construction and test of the prototype cryomodule (Leader: V. Parma) • Components: Cryomodule, Cavities, RF items (Couplers, tuners, …), cryogenicsequipment… • Assembly (withadequatetools): cavities string in clean room, inclusion in cryomodule • Tests: cavities in vertical cryostat, assembledcryomodule in bunker. • Upgrade of the SM18 infrastructure (Leader: O. Brunner) • HP water rinsing system and upgraded clean roon • Cryogenics for efficient operationat 2K • High power RF at 704 MHz (klystron, modulator, high power distribution) • LowLevel RF and controls • SC RF cavitiestechnology (Leader: E. Ciapala) • Fabrication and processing • Test, diagnostics and analysis 7

  8. Highlightssince SLHiPP-2 (1/5) - EVENTS - Contribution to the briefing book of theEuropean Strategy Group [ http://europeanstrategygroup.web.cern.ch/EuropeanStrategyGroup/ ] “R&D related to the High Power Superconducting Proton Linac (HP-SPL)“ https://indico.cern.ch/abstractDisplay.py/getAttachedFile?abstractId=161&resId=2&confId=175067 - 5-8 November 2012: TTC12 (JLab) [http://www.jlab.org/conferences/ttc2012/index.html] - 6 December 2012: SPL seminar 2012 (CERN) [http://indico.cern.ch/conferenceDisplay.py?confId=216370] 8

  9. Highlightssince SLHiPP-2 (2/5) - CRYOMODULE Supporting system mock-up: All components ordered / vacuumvessel ready Interfaces welded to double tubes Cool down and first cold tests: first half of 2013 Cold magnetic shield Cold magnetic shield 9

  10. Highlightssince SLHiPP-2 (3/5) SM18 & CRYOMODULE INTEGRATION RF distribution Cryomodule integration in the bunker Study by P. Martinez Yanez and B.Riffaud Valve box design from SM18 Vacuum vessel Cryo-module Valve box to CM Thermal shield Cryo line interface SC RF diagnostics: Quench detection with OSTs Optical inspection bench Cleanroom new layout High Pressure Rinsing 10

  11. Highlightssince SLHiPP-2 (4/5) CAVITIES FABRICATION 2 Cu 5-cell cavities β=1 (prototypes) fabricated at CERN: Tolearnwiththefabricationprocess Topractice RF measurements Forsurfacetreatmenttests 5 Nb5-cell cavities β=1 ordered in industry (RI) Single cell test cavity e-polished and RF measured Q0 1010 109 108 Preparation for fabrication of an Nb 5-cell cavity at CERN in 2013: Successfultests of Nb spinning & Nb brazingon Steel E-beamweldingtestswith new machine Accel. gradient (MV/m) SS SS Cu Cu New e-beam welding machine Spinning tests Nb Nb 11

  12. Highlightssince SLHiPP-2 (5/5) RF COUPLERS DEVELOPMENT Tuners (CEA design & fabrication): - 8 tuners delivered RF couplers tested at high power Coaxial disk window : • TW : 1000 kW 2 ms 20 Hz • SW : 1000 kW 1.5 ms 4 Hz … and how to make it better Air inlet through WG short circuit PEEK Screen all around ceramic Cylindrical window : • TW : 1000 kW 2 ms 20 Hz • SW : 550 kW 500 us 8 Hz 12

  13. OUTLINE • Recent progress • Planning • New subjects of investigation • Final word F

  14. Status of SPL R&D (1/2) • Construction of 4 cavities in industry • In progress (full delivery in July 2013) • Construction of one additional cavity at CERN • In progress (completion in 2013) • Test of single cell cavities from CEA and INFN • Done • Measurements and tests with dumbbell copper cavity • Done • Upgrade of cryogenics and water rinsing facility in SM18 • Planned in 2013 (manpower and material budget) • Upgrade of clean room in SM18 • Planned in early 2014 (manpower and material budget) • 704 MHz klystron for SM18 • In fabrication (delivery in 2013) • Klystron modulator from industry (ESS) • In fabrication (delivery in 2013) • Preparation of 704 MHz RF components (Low Level and High Power) for SM18 • In progress More detailsduringthis meeting 14

  15. Status of SPL R&D (2/2) - Construction & test of High power RF couplers • Correctly Cu-platted tubes available / New assembly could not take place in DESY – problems with assembly and failed test in Saclay… • Completion delayed to the end of 2013 - Specification & construction of tuners and He tanks (CEA): Delayed - LP-SPL CDR (jointly with PS2): In progress! - Meetings: • 5-8 August 2013: AccApp13 Workshop (Bruges) [http://www.accapp13.org/] • 17-24 August 2013: NuFact’13 Workshop (Beijing) [http://nufact2013.ihep.ac.cn/index.html] • 23-27 September 2013: SRF conference (Paris) [http://www.srf2013.fr/] • 28-29 November 2013: SLHiPP-4 (CERN) More detailsduringthis meeting Proposal 15

  16. Planning of cavities fabrication (RI) 8 monthsdelaywrtprevision… 16

  17. Overall planning Conflictwith HIE-ISOLDE… ~1 yeardelay… 17

  18. OUTLINE • Recent progress • Planning • New subjects of investigation • Final word F

  19. High Power IOT development Collaboration ESS/CERN-SPL under discussion CERN 801 MHz 60 kW CW IOT amplifier Draft specifications IVEC’13 paper 19

  20. «EUROSB» ERC Synergy Grant Proposal Purpose: progress in design of few GeV Linac-based Proton Driver 20

  21. OUTLINE • Recent progress • Planning • New subject of investigation • Final word F

  22. (1/2) 22

  23. (2/2) 23

  24. Future (beyond what has been shown before)… • 2013-2014: • Studies for proton drivers in future neutrino facilities (in the context of LAGUNA-LBNO): • LP-SPL as injector of a 2 MW / 30-50 GeV synchrotron • HP-SPL with an accumulator as a 5 MW / 5 GeV proton source • 2014-2016: • Continuation of Proton Driver study within EUROSB (if supported by the EC) • Branching point for defining the continuation of the R&D inside CERN • Updated Scientific Strategy of CERN resulting from the recommendations of the European Strategy Group • Key ingredients for continuation: • Physics! Based on the results of LHC and of the on-going n experiments. • Strength / weaknesses of alternative options (Japanese initiative for an ILC in Japan …) • Strength / weaknesses of proposals for nfacilities • Strength / weaknesses of the SPL-related applications (Proton drivers for n facilities, Injectors for LHC-related future beyond HL-LHC, LHeC, LEP-III …) • CERN strategy for sc RF technology • Politics and collaborations… 24

  25. THANK YOU FOR YOUR ATTENTION!

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