1. Visit to Saclay – XFEL Village
Overview
General Comments
Details - RO
TB Saclay/XFEL (M. Ross)

2. 03-05.06: 2 phase pipe assembly  primary activity
Roll Out of XM-2: 29.05
HOM tuning (C. Simon):
03.06: Start visit
: 2 phase pipe assembly  primary activity
04.06: He vessel hardware mounting
(thermal sensors, MLI/mag shield)
04.06: Alignment (roll) check
05.06: last day of visit
TB Saclay/XFEL (M. Ross)

3. Average: 10 people present
Key staff:
CEA:
Catherine Madec
Stephane Berry
Jean-Pierre Charrier - long time SRF tech
Thierry Trublot - Quality engineer
Christel Cloue - Quality engineer
Michel Fontaine - alignment
Alsyom
Aurelien – lead supervisor
6 tech
SEIV – welding Tech
(both part of Alcen)
DESY
Wolfgang Maschmann
Heiko Hintz – TuV/Desy
Oliver Paschold - Welder
Average: 10 people present
TB Saclay/XFEL (M. Ross)

4. 3-way Tech-Transfer in full-swing
General Comments:
3-way Tech-Transfer in full-swing
Use of Contingency: developing tooling or reducing schedule – risk
Minimizing string ‘g-shock’
Contaminant adhesion under vacuum / backfill?
Roll alignment and string assembly / cavity support system
Hardware (screws etc) procurement, preparation and certification
TB Saclay/XFEL (M. Ross)

5. Details: 2-phase pipe assembly
Ti pipe
(Formed bellows leak problem with CM-2, Fermilab)
Trimming, cleaning, orbital welding and leak checking
Problems / questions:
Pipe trimmer weight – twisting and vibrating the string
Leak checking using the rubber clamshell
Weld qualification
Bellows handling
TB Saclay/XFEL (M. Ross)

6. String Assembly and Ti pipe assembly
Details: Alignment
String Assembly and Ti pipe assembly
(Multiple support systems: cavity, roll-restraint and bellows)
Tolerance: +/- 26 m-rad (warm coupler offset)
Problems / questions:
Comments from Alsyom engineers
Roll problem: Cav 6, PXFEL2-2
Roll-restraint ‘inverted A’ frame
TB Saclay/XFEL (M. Ross)

7. Details: Shields
Cavity (H
TB Saclay/XFEL (M. Ross)

8. Fermilab Ti Bellows Leak movie
Desy Ti formed Bellows closeup:
TB Saclay/XFEL (M. Ross)

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TB Saclay/XFEL (M. Ross)

10.
TB Saclay/XFEL (M. Ross)

11.
TB Saclay/XFEL (M. Ross)

12.
TB Saclay/XFEL (M. Ross)

13. Orbital welder electrode
Heiko Hintz can ‘act on behalf’ of TüV
TB Saclay/XFEL (M. Ross)

14. Orbital welder made in California
TB Saclay/XFEL (M. Ross)

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TB Saclay/XFEL (M. Ross)

16.
TB Saclay/XFEL (M. Ross)