Compact Linear Collider (CLIC)
- 1. Compact Linear Collider (CLIC) Philip Burrows John Adams Institute Oxford University 1
- 2. 2 •Introduction •Linear colliders + CLIC •CLIC project status •5-year R&D programme + technical goals •Applications of CLIC technologies Outline
- 3. Large Hadron Collider (LHC) 3 argest, ighest-energy article ollider ERN, eneva
- 5. 5 • A proposed LINEAR collider of electrons and positrons • Designed to reach VERY high energies in the electron-positron annihilations: 3 TeV = 3 000 000 000 000 eV • Ideal for producing new heavy particles of matter, such as SUSY particles, in clean conditions CLIC vision
- 6. 6 • A proposed LINEAR collider of electrons and positrons • Designed to reach VERY high energies in the electron-positron annihilations: 3 TeV = 3 000 000 000 000 eV • Ideal for producing new heavy particles of matter, such as SUSY particles, in clean conditions … should they be discovered at LHC! CLIC vision
- 7. 7 CLIC Layout: 3 TeV Drive Beam Generation Complex Main Beam Generation Complex
- 8. 8 • An energy-staging strategy is being developed: ~ 500 GeV 1.5 TeV 3 TeV (and realistic for implementation) • The start-up energy would allow for a Higgs boson and top-quark factory CLIC energy staging
- 9. 2013 Nobel Prize in Physics 9
- 10. e+e- Higgs boson factory e+e- annihilations: E > 91 + 125 = 216 GeV E ~ 250 GeV E > 91 + 250 = 341 GeV E ~ 500 GeV
- 11. European PP Strategy (2013) 11 High-priority large-scale scientific activities: LHC + High Lumi-LHC Post-LHC accelerator at CERN International Linear Collider Neutrinos
- 12. International Linear Collider (ILC) 31 km c. 250 GeV / beam 12
- 13. Kitakami Site 13
- 14. ILC Kitakami Site: IP region 14
- 16. European PP Strategy (2013) 16 CERN should undertake design studies for accelerator projects in a global context, with emphasis on proton-proton and electron-positron high energy frontier machines. These design studies should be coupled to a vigorous accelerator R&D programme, including high-field magnets and high- gradient accelerating structures, in collaboration with national institutes, laboratories and universities worldwide.
- 17. 17 CLIC Layout: 3 TeV Drive Beam Generation Complex Main Beam Generation Complex
- 18. 18
- 19. 29 Countries – over 70 Institutes Accelerator collaboration Detector collaboration Accelerator + Detector collaboration CLIC CollaborationCLIC Collaboration
- 20. 29 Countries – over 70 Institutes Accelerator collaboration Detector collaboration Accelerator + Detector collaboration CLIC CollaborationCLIC Collaboration New accelerator collaboration partners joining (2013/4): The Hebrew University Jerusalem, Vinca Belgrade, ALBA/CELLS, Tartu University, NCBJ Warsaw, Shandong University, Ankara University Institute of Accelerator Technologies (IAT) Detector collaboration operative with 22 institutes
- 21. CLIC Organisation 21 CERN LC project leader: Steinar Stapnes CLIC Accelerator: Collaboration Spokesperson: PNB CLIC/CTF3 technical coordinator: Roberto Corsini Collaboration Board Chair: Lenny Rivkin CLIC Detector + physics: Collaboration Spokesperson: Lucie Linssen Collaboration Board Chair: Frank Simon
- 22. 22 Link: http://indico.cern.ch/conferenceDisplay.py?confId=275412 306 registered Main elements: Open high energy frontier session session, including hadron options with FCC Accelerator sessions focusing on collaboration efforts and plans 2013-2018, parallel sessions and plenary High Gradient Applications for FELs, industry, medical Physics and detector sessions on current and future activities Collaboration and Institute Boards
- 23. 23 Link: http://indico.cern.ch/conferenceDisplay.py?confId=275412 306 registered Main elements: Open high energy frontier session session, including hadron options with FCC Accelerator sessions focusing on collaboration efforts and plans 2013-2018, parallel sessions and plenary High Gradient Applications for FELs, industry, medical Physics and detector sessions on current and future activities Collaboration and Institute Boards
- 26. CDR (2012) 26
- 27. CDR (2012) 27 DRIVE BEAM LOOPS DRIVE BEAM INJECTOR BYPASS TUNNEL e- INJECTION DESCENT TUNNEL DAMPING RINGS MAIN BEAM INJECTOR INTERACTION REGION DRIVE BEAM DUMPS COMBINER RINGS TURN AROUND e+ INJECTION DESCENT TUNNEL FRANCE SWITZERLAND CLIC SCHEMATIC(not to scale) e+ SIDEe- SIDE LHC INJECTION TUNNEL Sands and gravelsMolasseMoraines Limestones ≈ 1km ≈100m
- 28. CDR (2012) 28
- 29. ultra low-mass vertex detector with 25 μm pixels all-silicon tracker fine grained (PFA) calorimetry, 1 + 7.5 Λi, strong solenoid 4 T - 5 T return yoke with Instrumentation for muon ID complex forward region with final beam focusing 6.5 m Lucie Linssen 29 CLIC detector
- 30. CDR (2012) 30 • Pre-Higgs discovery • Optimised design for 3TeV, but not lower energies • First look at power/energy requirements • Some industrial costing, overall cost not optimised • Some component reliability studies • X-band demonstration limited by test capacity • Initial system tests Already a lot more has been (and will be) done!
- 31. Beyond the CDR: next 5 years 31 Present CLIC project as a credible option for CERN in post-LHC era ( > 2035) – for consideration in next European Strategy update ~ 2018/19 •Update physics studies in light of LHC results •Complete key technical feasibility R&D •Perform more system tests + verification •More advanced industrialisation studies •Cost/energy-staging strategy with a 20-30 year perspective
- 32. 32 CLIC parameters (3 TeV) Electrons or positrons / bunch 4 10**9 Bunch separation 0.5 ns
- 33. 33 CLIC parameters (3 TeV) Electrons or positrons / bunch 4 10**9 Bunch separation 0.5 ns Bunches/train 312 Train length 156 ns
- 34. 34 CLIC parameters (3 TeV) Electrons or positrons / bunch 4 10**9 Bunch separation 0.5 ns Bunches/train 312 Train length 156 ns Accelerating gradient 100 MV/m
- 35. 35 CLIC parameters (3 TeV) Electrons or positrons / bunch 4 10**9 Bunch separation 0.5 ns Bunches/train 312 Train length 156 ns Accelerating gradient 100 MV/m Horizontal IP beam size 40 nm Vertical IP beam size 1 nm
- 36. 36 CLIC parameters (3 TeV) Electrons or positrons / bunch 4 10**9 Bunch separation 0.5 ns Bunches/train 312 Train length 156 ns Accelerating gradient 100 MV/m Horizontal IP beam size 40 nm Vertical IP beam size 1 nm Train repetition rate 50 Hz
- 37. 37 CLIC parameters (3 TeV) Electrons or positrons / bunch 4 10**9 Bunch separation 0.5 ns Bunches/train 312 Train length 156 ns Accelerating gradient 100 MV/m Horizontal IP beam size 40 nm Vertical IP beam size 1 nm Train repetition rate 50 Hz Luminosity 6 10**34
- 38. 38 CLIC parameters (3 TeV) Electrons or positrons / bunch 4 10**9 Bunch separation 0.5 ns Bunches/train 312 Train length 156 ns Accelerating gradient 100 MV/m Horizontal IP beam size 40 nm Vertical IP beam size 1 nm Train repetition rate 50 Hz Luminosity 6 10**34 Wall-plug power 582 MW
- 39. CLIC accelerating structures 39 12 GHz (X-band): 100 MV/m Micron-level surface finish and stacked alignment
- 40. High RF power X-band test station XBOX#2. bld. 150. 430 kV modulator 50 MW Klystron RF Pulse compressor LLRF Vacuum controller s
- 41. Future XBOX#3: x4 klystron (6MW) cluster Should service 4 testing slots in parallel with pulses repetition rate of 100 Hz
- 42. CLIC Modules 42 20760 modules x 2 3 modules to be mechanically characterised + tested: Active alignment, fiducialisation + stabilisation (PACMAN)
- 43. Test-area (simulating the tunnel) AIR FLOW Cooling coils Heating coils AIR CIRCULATION • Air speed sensors installed in the middle of the room Air speed sensors • Range for air temperature and speed: Tair = 20 - 40 °C vair = 0.2 - 0.8 m/s
- 44. “Nano positioning” CLIC 44 With piezo actuators, modify position quadrupole in between beam pulses (~ 5 ms) Range ± 5 μm, increments 10 to 50 nm, precision ± 0.25 nm
- 45. 45 Type 1 Collocated pair X-y proto In CLIC this transfer function reduces the luminosity loss due to ground motion from 68 % to 7% Demonstration of mechanical absolute stability at sub nano metre level
- 46. PACMAN = a study on Particle Accelerators Components’ Metrology and Alignment to the Nanometer scale Metrology Develop very high accuracy metrology & alignment tools and integrate them in a prototype alignment bench Extrapolate the tools & methods developed to other projects Prepare for industrialisation Survey & alignment Beam instrumentation Radio Frequency Nano-positioning Magnetic measurements
- 47. DMP ES ELTOS IT ETALON DE METROLAB CH SIGMAPHI FR Cranfield University GB ETH Zürich CH LAPP FR SYMME FR University of Sannio IT IFIC ES University of Pisa IT Delft University of Technology NL Hexagon Metrology DE National Instruments HU TNO NL ACMAN industrial and academic partners
- 48. CLIC Magnets 48 124 MW power consumed by magnets in 3 TeV baseline Eg. use of permanent or hybrid magnets for the drive beam ( ~ 50,000 magnets)
- 49. Vacuum technology development for CLIC Development of vacuum windows and chambers in glassy carbon. NEG and ion pumping Deformable RF fingers in free position
- 50. • test accelerator to demonstrate CLIC technology COMBINER RING COMBINER RING DELAY LOOP DELAY LOOP Frank Tecker DRIVE BEAM LINAC DRIVE BEAM LINAC TBTSTBTS TBLTBL CLEXCLEX CLIC Test Facility (CTF3)
- 51. CTF3 51
- 52. CTF3 52 CLIC Diagnostics testsCLIC Diagnostics tests Beam loading/BDR experiment Beam loading/BDR experiment Power production, RF conditioning/testing with DB & further decelerator tests Power production, RF conditioning/testing with DB & further decelerator tests Two-Beam Module, Wake-field monitors, Two-beam studies RF pulse shaping Two-Beam Module, Wake-field monitors, Two-beam studies RF pulse shaping Phase feed-forward, DB stability studies Phase feed-forward, DB stability studies
- 53. Drive beam phase FF prototype (Oxford, CERN, Frascati) 53
- 54. Drive beam phase FF prototype (Oxford, CERN, Frascati) 54
- 55. Drive beam phase FF prototype (Oxford, CERN, Frascati) 55
- 56. Executive summary 56 • The key CLIC technologies have been prototyped + demonstrated no ‘show-stoppers’ • Currently main effort is on system tests and industrialisation of key technologies • I only gave a flavour of some of the issues • There is a lot to do… come and join the fun!
- 57. 2013-18 Development Phase Develop a Project Plan for a staged implementation in agreement with LHC findings; further technical developments with industry, performance studies for accelerator parts and systems, as well as for detectors. 2018-19 Decisions On the basis of LHC data and Project Plans (for CLIC and other potential projects), take decisions about next project(s) at the Energy Frontier. 4-5 year Preparation Phase Finalise implementation parameters, Drive Beam Facility and other system verifications, site authorisation and preparation for industrial procurement. Prepare detailed Technical Proposals for the detector-systems. 2024-25 Construction Start Ready for full construction and main tunnel excavation. Construction Phase Stage 1 construction of CLIC, in parallel with detector construction. Preparation for implementation of further stages. Commissioning Becoming ready for data- taking as the LHC programme reaches completion. DRIVE BEAM LINAC CLEX CLIC Experimental Area DELAY LOOP COMBINER RING CTF3 – Layout 10 m 4 A – 1.2 ms 150 MeV 28 A – 140 ns 150 MeV Two-Beam Test Stand (TBTS) Test Beam Line (TBL) CLIC roadmap
- 58. Applications of CLIC high-gradient technology Linear collider – CLIC collaboration Single-room proton therapy for cancer TERA foundation Australian Light source FERMI at Trieste Compact XFEL light sources – Horizon2020 proposal
- 59. Horizon 2020 Design Study 59 XbFEL
Editor's Notes
- #45: The same piezo actuators can be used to make very small displacements of the quadrupole , obtaining a smaller alignment resolution. A precision of a quarter of a nanometre was demonstrated.
- #46: For the CLIC study , the mechanical stabilisation of quadrupole magnets was developed , using piezo actuators for displacing the magnet and seismometers for measuring the ground motion and vibrations. A controller was elaborated and demonstration benches have shown that the vibration level can be decreased to values smaller than a nm (vibration level at 1 Hz defined as integrated r.m.s. summing of all the vibration amplitudes above 1 Hz).
- #50: Glassy carbon is a transparent (high radiation length) material, compatible with UHV conditions (low outgassing and permeation). Due to its low thermal expansion coefficient and low Young modulus, this material is useful (for thermal fatigue reasons) for applications where pulse beams interact with the vacuum chambers/windows. This could be the case for example in the combiner rings where high pulse synchrotron radiation occurs or windows. The drive beam of CLIC requires low impedance and smooth interconnections. Deformable RF fingers, that are stretched in operating conditions, are being developed in this context.
- #51: Within the international collaboration, we have build the CLIC Test Facility CTF3 in order to test and demonstrate the CLIC technology