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Stabilisation day #6 Brief n ews from CLIC module WG

Stabilisation day #6 Brief n ews from CLIC module WG. G. Riddone on behalf of the CMWG, 09.06.2009. Content. Recall of baseline design for CDR Design evolutions (from version 2 to version 4) Future work. Module design baseline.

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Stabilisation day #6 Brief n ews from CLIC module WG

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  1. Stabilisation day #6 Brief news from CLIC module WG G. Riddone on behalf of the CMWG, 09.06.2009

  2. Content Recall of baseline design for CDR Design evolutions (from version 2 to version 4) Future work

  3. Module design baseline Accelerating structure: CLIC G (100 mV/m, L = 230 mm, aperture ~ 5 mm) PETS: CLIC note 764 (6.5 MV/m, L=310 mm, aperture 23 mm) 1 PETS powering 2 accelerating structures Beam interaxis: 650 mm  same height for the two beams Accelerating structures and PETS + DB Q on girders (same girders based on MB girder design) Girder end supports  cradles mechanically attached to a girder and linked by rods to the adjacent one: snake-system adopted(DB: 100 A, MB: minimization of wakefields, validation at 30 GHz in CTF2) Separate girders for main and drive beam  possibility to align DB quadrupole separate from accelerating structures Separate support for MB Q and its BPM MB Q and BPM rigidly mechanically connected Common actuators/devices for stabilization and beam-based feedback systems

  4. Module type 1 2 DB Q + BPMs 3 PETS 6 AS MB Q + BPM

  5. Module type 1 – version 2 All 3D models made by A. Samoshkin

  6. Module type 1 views – version 2

  7. CLIC two-beam module - version 2 CTF2 Continuity between girders All MB girders have the same length MB Q support passes over the MB girder MB Q beam pipe and AS beam pipe are coupled via bellows

  8. CLIC two-beam module - version 4 No full continuity between MB girders (increasing of align. cost) MB girder length changes as function of module type No girder underneath MB Q Beam height lowered MBQ support simplified MB Q beam pipe and AS beam pipe are coupled via bellows

  9. Future work • At present the beam height is imposed by the drive beam: • Height of the girder (same as for MB girder) • DBQ support • DBQ dimensions ACTIONS • Calculation for the DB girder has been launched to optimise its size and with the aim of lowering its height • Confirmation of DB Q dimensions and support (CERN-Crockford institute)

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