Minutes RF structure meeting 23.04.2009

F. Gerigk, S. Ramberger, G. DeMichele, F. Grespan

PIMS (FrankGerigk)

  • Welding Test (Soltan Institute): the welding test has been a full success. For the series production a welding more deep than 7 mm has been proposed, in order to avoid that bubbles at the bottom of the welding can connect to the tank vacuum and create virtual leaks.
  • Workshop meeting 23/04:
    • complete machining of the central cell, ready to be brazed
    • small changes in the drawings
    • December 2009: machining done
    • March 2010: Low Power Test
    • May/June 2010: final assembly


  • 25-26 June 2009: workshop on HOMs for SPL.


  • Prototype vacuum: because of the chemical processing, the mild steel tank is now degassing from the layer under the copper plating.(SuitbertRamberger)
  • Power Coupler:(GiovanniDeMichele)
    • comparison of Beta (coupling parameter) computed with 2 simulation methods -> 10% safety margin for simulation results
    • MWS and HFSS give different frequency detuning due to the wave-guide -> check with measurements on the Prototype
  • Cold Model realigned by RF workshop, and reassembled. First bead-pulling gives a field more flat, but still +/- 20% error for some gaps. Next step is changing the bead to reduce the noise. (FrancescoGrespan)
  • Paper on the DTL prototype is ready for PAC09. FR5REP054.pdf

-- FrancescoGrespan - 27 Apr 2009

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Topic revision: r3 - 2009-04-29 - FrancescoGrespan
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