F. Gerigk, J-M. Giguet, G. T. Papadaki, K. Schirm, R. Wegner, P. Ugena-Tirado

updated Linac4 master plan (F. Gerigk)

movable tuners (F. Gerigk)

  • material to be delivered to manufacturer (Yves + JM)

CCDTL (F. Gerigk)

  • received translations of technical procedures, heat treatment duration was missing + small details, gave green light for support construction apart from heating cycle
  • asked to receive welding filler for TIG welding (Said)

collaboration with Spain (F. Gerigk)

  • Suitbert is visiting Bilbao to discuss details on possible manufacture of couplers, jacks, post couples, girders, tanks, etc.

cable positions (F. Gerigk)

  • meeting in preparation with Jean-Claude Guillaume on where RF antenna cables, and Flexwell will be connected

SM18 Linac4 test stand (J-M. Giguet, R. Wegner, P. Ugena-Tirado)

  • Cables for beam instrumentation tests have been measured.
  • The directional coupler has been re-adjusted, this time for maximum directivity for both ports. At a coupling of ~ -52 dB, the best directivity was found.
  • P. Baudrenghien measured all pickups and modes of the accelerating band to prepare the low level control of the Linac4 cavities.
  • The transmission from the waveguide though the 1st PIMS cavity to the BPM was investigated. Only noise at a level of -110 dB was seen. The BPM seems to be well decoupled from the accelerating mode. Moreover, up to 1.6 GHz, no transmission better -110 dB was measured.

PIMS (R. Wegner)

  • Metrology results of the 2 rings for the short module (G_1-2, G_13-14). Both are out of tolerances, in several measurements even more than 5 times.
  • Discs are machined with the newly developed tools.
  • Once the results are available, a meeting with the CERN workshop will be organised to take a decision how to repair/use the machined parts and how to continue with the qualification.
  • Tolerances are being investigated to find our span for acceptance.

PIMS (P. Ugena-Tirado)

  • Circuital Model almost finished. Mode frequencies are correct. Field distribution needs to be checked.

-- RolfWegner - 02-Feb-2012

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