1. Documentation review: Beam tube assembly Comments given by CERN to the technical file submitted by Niowave prior to release for fabrication 16/10/20141

2. Material samples #DrawingComments 113-0017-R000-A02t=3mm, ok but for cavity body t=4mm (new samples) 2Please indicate that edges of the plate are either parallel or perpendicular to rolling direction 313-0017-R000-A04idem 16/10/20142 Samples are to be provided for every batch of material (heat nº) CERN material certificates for SS flanges: https://edms.cern.ch/document/1422133/1

3. Last comments sent (all prints) #Drawing Comment 113-0017-0108-A50 D7 – welded from both sides? 213-0017-0108-A53 D5 – welded from both sides? Same for C3 313-0017-0109-A13 B5 – position 1 and 2 not indicated on the drawing Complex welding to be discussed 413-0017-0109-P02 Deep drawing seems too deep. Is there enough material? + trimming… 513-0017-0109-P05 Same as for 13-0017-0109-P02 613-0017-0112-A51 C6 – welding detail: 60/60 but only 1 side? 713-0017-0150-A73 B1 – filet brazing (Nota) – tbd B1 – radius 0.1mm might be increased in all CF flanges (tbd) (sheet 2/2) B7, C2 – geometrical tolerances tbd (sheet 2/2) 813-0017-0150-P02 C6 – mixed tolerances? 913-0017-0151-A78 Geometrical tolerances to be discussed 1013-0017-0153-P01 Missing welding detail of the tube 1113-0017-0154-A76 D6- welded 60% from both sides? 1213-0017-0154-P03 Missing welding detail of the tube 1313-0017-0154-P05 B6 – g6 or H7? 1413-0017-0162-P01 Missing welding detail of the tube 1513-0017-0163-P01 Missing welding detail of the tube 1613-0017-0164-P01 Missing welding detail of the tube 1713-0017-0173-P02 Missing welding detail of the tube 1813-0017-0174-P01 B5 – geometrical tolerances tbd A5 – missing reference C… A7? 1913-0017-0176-A77 Brazing symbol. Why filet weld is required? Leak tightness? Tbd B7 – sheet 2/2 – tolerances to be discussed Machining of centre slot not indicated 16/10/20143

4. Production prints: summary 16/10/20144 #DrawingComments 113-0017-0108-A50 1-2B7 – missing reference 1 213-0017-0108-A50 2-2tolerances to be discussed… Note 2: orientation critical… is it shown? 313-0017-0173-P02B6 – tolerances enough? tbd 413-0017-0150-P02(!) 13-0017-0150-A73 2/2 Step in the inner diameter tbd 513-0017-0150-P03tolerances to be discussed… 613-0017-R001-P03Missing tolerances on inner diameter Welding symbol: change side See next slide 713-0017-0150-A73Welding annotations: W01, W02, W03…next slide Intermediate assembly step: add geometrical tolerances?

5. 16/10/20145 Production prints: specific comments

6. 16/10/20146

7. 7

8. 8

9. 9 Discussed during the meeting- to be checked (consistency of tolerances)

10. 16/10/201410

11. Suggestions for welding details 16/10/201411 Technical contact: Paula Freijedo-Menendez

12. 16/10/201412 Technical contact: Paula Freijedo-Menendez