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Two-beam module review , 15-16 September 2009 Module layout and types

Two-beam module review , 15-16 September 2009 Module layout and types. G. Riddone for the CMWG, 15.09.2009. Content. Introduction Mandate and Organization Module Types Module Configurations Main requirements Milestones. Module: 10462 Accelerating structures: 71406 PETS: 35703

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Two-beam module review , 15-16 September 2009 Module layout and types

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  1. Two-beam module review, 15-16 September 2009Module layout and types G. Riddone for the CMWG, 15.09.2009

  2. Content Introduction Mandate and Organization Module Types Module Configurations Main requirements Milestones

  3. Module: 10462 Accelerating structures: 71406 PETS: 35703 MB quadrupoles: 1996 DB quadrupoles: 20924

  4. 500 GeV  3 TeV No changes in the module design Module: 2124 Accelerating structures: 13156 PETS: 6578 MB quadrupoles: 929 DB quadrupoles: 4248

  5. Two-beam module PETS-6.5 MV/m, 136 MW, 213 mm Accelerating structure+100 MV/m, 64 MW, 229 mm A fundamental element of the CLIC concept is two-beam acceleration, where RF power is extracted from a high-current and low-energy beam (drive beam) in order to accelerate the low-current main beam to high energy (main beam).

  6. CLIC two-module WG mandate PURPOSE • Detailed integration of the various CLIC technical systems of the drive beam decelerators and the main beam accelerators into so called “CLIC modules”. The technical systems comprise:high-power rf structures, micron precision pre-alignment, nanometer stabilization, beam instrumentation, vacuum and electromagnets. • The module working group conducts the study and mechanical design, integration and fabrication issues, drives the cost estimate and provides feedback for other areas of the study. MAIN TASKS • Definition • overall layout, • space reservation, • number of components and their exact position and dimension • system integration; interfaces between components, interference of components • layout of special regions (drive beam turn-around loops) • Set-up and keep up-to-date the related documentation, such as parameter specifications, and 3D models. • Module integration in the tunnel, including module transport and installation in collaboration with CES WG • Coordination role for the design and construction of the so called “104 Test Modules” • Cost estimate The CMWG reports to the CTC, CTF3 Committee and RF Structure Committee.

  7. Two-beam Modules “areas” Test Modules

  8. Organization Working group with link persons for main technical systems and interfaces Collaborators CEA/Saclay CIEMAT DUBNA/JINR HIP/VTT LAPP Pakistan, NCP PSI UPPSALA Universityof Manchester ….. Interface to Beam physics: D. Schulte Transfer lines: B. Jeanneret Radiation issues: S. Mallows • Technical systems • RF: I. Syratchev, W. Wuensch, R. Zennaro, • RF instrumentation: F. Peauger, R. Zennaro • Beam instrumentation: L. Soby • Vacuum: C. Garion • Magnet: M. Modena • Pre-alignment:. F. Lackner, H. Mainaud-Durand, T. Touzé • Stabilization: K. Artoos, A. Jeremie • Structure supports: N. Gazis J. Huopana, R. Nousiainen • Beam feedback: H. Schmickler • Integration: A. Samoshkin D. Gudkov; • Tunnel and Transport: J. Osborne, K. Kershaw

  9. Module systems and interactions RF system Vacuum system Beam physics Civil engineering and service Beam instrumentation system Magnet system / Magnet powering system Supporting system Cost and schedule Machine protection and operation Beam feedback system Alignment system Stabilization system Stabilisation WG Cooling system Assembly , Transport and Installation

  10. Activity flow RF and beam dynamics constraints Definition of technical requirements Technical system design Baseline for CDR Module design and system integration Alternatives are also studied with the aim of improving performance and/or reduce cost Test modules (lab, CLEX) Tests

  11. Module types and numbers Type 0 Total per module 8 accelerating structures 8 wakefield monitors 4 PETS 2 DB quadrupoles 2 DB BPM Total per linac (3 TeV) 8374 standard modules DB MB

  12. Module types and numbers • Total per linac (3 TeV) • Quadrupole type 1: 154 • Quadrupole type 2: 634 • Quadrupole type 3: 477 • Quadrupole type 4: 731 • Other modules • modules in the damping region (no structures) • modules with dedicated instrumentation • modules with dedicated vacuum equipment • … Type 1 Type 3 Type 2 Type 4

  13. Two-beam Module configurations BASELINE • Configuration #1 the accelerating structures are formed by four high-speed milled bars which are then clamped together, and the PETS bars and couplers are all clamped and housed in a vacuum tank alternative • Configuration #2  the ACS are made of discs all brazed together forming a sealed structure, and the PETS are made of octants and “mini-tanks” around the bars  adopted as baseline

  14. Two-beam module, TYPE 1 System integration A. Samoshkin Technical system design is not an isolated activity  boundary conditions shall be defined together with other systems and module integration

  15. WFM LOAD A S VAC ION PUMP COOLING TUBE Accelerating structures WAVEGUIDE TO AS CMF SPLITTER SUPPORT SPACE RESERVED FOR VAC SYSTEM • Acc. structure (CLIC G, D: 140 mm) • Structure (brazed disks) with “compact” coupler [fabrication: superstructures x2] • Wakefield monitor (1 per AS) • Cooling circuits • Vacuum system • Interconnection to MB Q • Structure support (alignment) • Output waveguide with RF components (eg. loads)

  16. COOLING TUBE PETS WAVEGUIDE TO AS MINI-TANK SUPPORT PETS - BPM INTERCONNECTION ON-OFF MECHANISM SPACE RESERVED FOR VACUUM SYSTEM • PETS (CLIC note 764) • Structure (8 octants) with “compact” couplers • Minitank for structure • On-off mechanism (20 msec OFF, 20 sec ON) • Cooling circuits (size for 0.5% beam loss) • RF distribution to AS • Vacuum system • Interconnection to BPM • Minitanksupport (fiducialisation)

  17. Some requirements EDMS# 971908 D. Schulte W. Wuensch, H. Mainaud-Durand N. Gazis, R. Nousiainen EDMS# 971672 K. Artoos, H. Mainaud-Durand H. Schmickler EDMS# 964715/17 R. Nousiainen EDMS# 992778 C. Garion • Accelerating structure pre-alignment transverse tolerance 14 um at 1s(shape accuracy for acc. structures: 5 um) • PETS pre-alignment transverse tolerance 30 um at 1s(shape accuracy for PETS: 15 um) • Main beam quadrupole: • Pre-alignment transverse tolerance 17 um at 1s • Stabilization (values at 1s): • 1 nm > 1 Hz in vertical direction • 5 nm > 1 Hz in horizontal direction • Module power dissipation : 7.7 kW (average) (~ 600 W per ac. structure) • Vacuum requirement: 10-8 mbar

  18. Some requirements Beam/RF instrumentation Limited space for BPM integration: 60 to 100 mm 1 BPM per Q, 1 WFM per AS,(RMS position error 5 μm) DB: ~ 47000 devices; MB: ~151000 devices EDMS# 1000481 A. Andersson L. Soby DB Magnets MB: The magnets are needed in four different magnetic lengths, namely 0.35, 0.85, 1.35 and 1.85m. In the baseline design, the beam pipe is attached to the magnet. The beam pipe centre needs to be aligned to the magnetic centre of the quadrupole with an accuracy of better than 30 μm. DB: The quadrupole active length is specified to 0.15 m. total number of quadrupoles needed for both decelerators is about 42000. EDMS# 954081 M. Modena EDMS# 992790 Ph. Lebrun Major cost driver : ~ 35 % of total cost

  19. Tunnel integration Transport and installation have to be considered in the early stage of the design Clear interconnection plane requirement is being included in module integration design work  space for inter-girder connection: 30 mm Power dissipation and temperature stability constraints directly influence the sizing of cooling and ventilation systems Module design has a strong impact on tunnel dimensions K. Kershaw M. Nonis, J. Osborne Study in collaboration with CES WG

  20. Milestones • Module review now • Baseline for CDR • CLIC workshop (oct 2009): recommendations from the module review will be reported together with the action plan • Module baseline design: Q1 2010 • Test modules in the lab: 2010 – 2011 [includes FP7 activities]: • Test modules in CLEX 2011-2013

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