Minutes RF structure meeting 22.08.2007

N. Alharbi, F. Gerigk, M. Pasini, S. Ramberger, M. Vretenar, R. Wegner

news & facts:

• DTL cold model
  • the machining of the DTL cold model in Saudi Arabia is completed, after measuring and writing a certificate with all tolerances and measured values the the model will be sent by plane to CERN (arrival time: ~in three weeks),
  • the manufacturing company (Alfanar Moulds) has a contract with KASCT and would be ready to work on the hot model,
  • the DTL holder was damaged during machining but the company found a supplier of Anticorodal in Saudi Arabia and replaced the piece,
  • they are ready to machine additional pieces if needed,
  • price tag: ~20 k¤,
  • once the model is here we should try to make an article for the CERN bulletin,
  • there are no extra holes foreseen for the RF pick-ups, we will use some of the post-coupler holes for pick-ups,
  • usually people adjust all post-coupler to be at the same distance from the drift tubes, according to simulations the distance should not be the same but we do not have a tuning procedure for this yet,

• PIMS
  • cost estimate for PIMS cold model (CERN workshops) will be ready by end August,
  • calculations for two additional 3-cell cold models with different coupling factors are on-going,

• CCDTL
  • re-calculation with Superfish is on its way, now the influence of the stems on the frequency is included, energy gain and phasing was verified, should be verified with a beam-dynamics code like PATH

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minutes by Frank Gerigk

-- FrankGerigk - 09 Aug 2007