1. WP 3 coordination meeting Saclay 26-28.May 2008
2nd session String assembly WP 9
(in side cleanroom)
4 topic to be presented and discussed
o Cleaning and hand over conditions ( update on Cavity transport)
o Vacuum
o Alignment of string
o Control options ( QC QA)

2. XFEL Cryomodule Workshop Saclay
Cleaning and hand over conditions
A.Matheisen
XFEL Cryomodule Workshop Saclay
May 26 –

3. Cleaning and hand over conditions
News on Cavity Transportation system
Actual hand over of DESY during
Actual layout of CV transport frame / Insert
Proposal on work steps to be done (from transport insert to class 10)
Cleanliness conditions on
infrastructure
material
“Personal”
Baseline list of parts and hand over conditions

4. News on cavity transportation system
a) Actual hand over of DESY
Insert with Cavity
Transportation cart
(Fork lifter)
Portable cleanroom

5. News on cavity transportation system
b) Actual layout of CV transport frame / insert
Transport- and test frame will be
Loaded with cavities at company
Transported to DESY
Used for cavity test at DESY
Transported to CEA
Unloaded from cavities at CEA
 Send back to companies
NEEDS PERFECT COORDINATION
AND DEFINITION AT HAND OVER POSITIONS

6. News on cavity transportation system
b) Actual layout of CV transport frame / Insert
Local pumping
line
at place of
installation
Fork lifter
connection
Hand over
Actual design of Cavity Test frame
No Cavity frames on during test and transport !!

7. News on cavity transportation system
Schematic of Vacuum system
Vacuum connection on Cavities
“Hand over” point
Basic design issues:
Central pumping line and UHV pumps are local !!

8. Proposal on work steps to be done transport insert to class 10
Install transport frame to “cavity delivery station”
Install local cleanroom
Connect Vacuum line under cleanroom cl 10
Open CV valves and control vacuum
Close CV valves
Control RF
Vent main pump line and “pump circle”
Dismount “pump circle”
Remove local cleanroom
Install frame to Cavity
Remove CV from transport insert
Car was cavity and dry it
Control cleanliness
Install CV to stock / power coupler installation place

9. News on cavity transportation system
To be discussed
3 ways to clean parts
Manually
Clean each area with cleanroom wipers + alcohol
Blowing with ionized air
Cleanliness ok
drawback: Time and man power consuming / risk of missing areas
2) US cleaning and rinsing
US bath with water overflow and recirculation required
Draw back: Separate rinsing bath required for fast removal of solvent
Large amount of water (Design of basin/ size)
3) “car wash” / “dish washer”
High pressure to remove particulates
circulation of water Washes particulates away
draw back: Not commercialized system
????

10. Cleanliness conditions on
infrastructure
Details on QC Talk N.Krupka

11. Cleanliness conditions on
material

12. Cleanliness conditions on “Personal”

13. Baseline list of parts and hand over conditions Parts to deliver
cleaning done by
Transport
Way
Cavities
WP 4
To be cleaned to
cl 10 quality
WP 9
SACLAY internal
Bellows
Gate valve No 2
WP 8
See talk H Remde
Vacuum: L <1E-10 mbar l/sec Particulates:
<< Cl 10 ready for installation
Boxes ?
DESY to SACLAY
BPM / Quad
WP 11
as a unit BPM Quad Gate valve
Vacuum: L <1E-10 P <1E-7 or vented
Particulates:
Box ?
Under investigation

14. Baseline list of parts and hand over conditions (continue.) Parts
to deliver
condition
cleaning done by
Transport
Way
Bolts Nuts Washer
Gaskets
WP 9
Cleaned to << cl 10
Saclay
Internal CEA
Power coupler
WP5
tested
on test stands
See discussion SACLAY ORSAY DESY
See workshop
Orsay to SACLAY
Infra
structure
else
conditioned to <<cl 10