Meeting with Dale Gwinnutt (Ningxia) at CERN – 22 March 2019

252/R-018 (CERN)



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Adria Gallifa Terricabras (Universidad de Oviedo (ES)) , Ignacio Aviles Santillana (CERN) , Marco Garlasche (CERN) , Nuria Valverde Alonso (CERN)

The purpose of Mr. Gwinnutt’s visit to CERN is to meet the team involved with materials testing and materials qualification for Crab Cavity project (HL-LHC WP4) and discuss about several topics regarding NbRRR300 and Nb55Ti material

    • 1:40 PM 2:00 PM
      Discussion on Ultrasonic Inspection of Nb and Nb55Ti 20m

      Improvements done by Ningxia with respect to Ultrasonic Inspection procedure and reports.
      Acceptability of Nb-rich inclusions.

      Speakers: Gonzalo Arnau Izquierdo (CERN) , Simon Adrian Garner (Ministere des affaires etrangeres et europeennes (FR))
    • 2:00 PM 3:30 PM
      Discussion on mechanical properties (and other properties) of Nb 1h 30m

      Discussion on the last qualification tests of NbRRR300 performed at CERN.
      Replacement of sheet.

    • 3:30 PM 3:50 PM
      Discussion on surface finsih of Nb sheet 20m

      Quick overview of the problematic and how it was improved in the last purchase orders.

    • 3:50 PM 4:20 PM
      Discussion on foreseen invitations to tender for HL-LHC WP4 30m

      Foreseen invitations to tender.
      USA collaboration.
      HOM's and pick up antennas.

      Speakers: Marco Garlasche (CERN) , Nuria Valverde Alonso (CERN)
    • 4:20 PM 5:00 PM
      Open points / Other projects 40m

      a) Other points of interest, comments or remarks. Colleagues from other projects can join to ask miscellaneous questions.
      b) Other material/ engineering services requirements by CERN that Ninxgia/Elite may be in a position to advise and supply.