E-XFEL Module Completion and Repair Activities X-Ray Free … · 2016. 7. 5. · XFEL Cryomodule...
Transcript of E-XFEL Module Completion and Repair Activities X-Ray Free … · 2016. 7. 5. · XFEL Cryomodule...
XFELX-Ray Free-Elect ron LaserE-XFEL Module Completion and Repair Activities
O. Napoly, CEA-Saclay, Irfu/SACM
5 July 2016 TTC Meeting, Saclay 1
XFELX-Ray Free-Elect ron LaserOutline
• Cryomodule production status
• Module performance vs. Clean Room procedures
• Module repair activities
• Conclusions
5 July 2016 TTC Meeting, Saclay 2
XFELX-Ray Free-Elect ron Laser
E-XFEL Cold Linac 17.5 GeV
1 + 100 accelerator modules
808 accelerating cavities
1.3 GHz / 23.6 MV/m / 1010
25 RF stations
5.2 MW each
5 July 2016 TTC Meeting, Saclay 3
XFELX-Ray Free-Elect ron Laser
CEA deliverable to European XFEL:
assembly of 103 accelerator modules
on the Saclay site and with CEA* infrastructure * nine pumping systems (with mass-spectrometer) and one laser-tracker from DESY
* two tuner control racks from INFN
Workforce by an industrial contractor Alsyom:
Quantity production goal: 1 module / week
Quality performance goal: Eacc > 23,6 MV/m
Cryomodule Production
5 July 2016 TTC Meeting, Saclay 4
XFELX-Ray Free-Elect ron Laser
the XFEL Village
Module integration route
Coupler Area CO-WS1
Alignment Area AL-WS1 & 2
Shipment
Area
SH-WS1 &
CO-WS2
Roll-out
Area
RO-WS1 & 2 Warehouse
Clean room
Area
CC-WS1 & 2
SA-WS1 & 2
Cantilever Area CA-WS1
Assembly Hall : Workstations
5 July 2016 TTC Meeting, Saclay 5
XFELX-Ray Free-Elect ron LaserCryomodule Delivery
5 July 2016 TTC Meeting, Saclay 10
2016:
25 modules
Figure: delivery of cryomodules, from XM1 to XM100
• 100 modules delivered to DESY so far (incling XM-3, XM-2, XM-1).
• In 2015, one cryomodule was delivered every 4 days, 52 in total.
• The Cold Linac includes also two pre-series cryomodules: XM-2 and XM-1
• The shipment of XM100 is scheduled in 27 July 2016
2015:
52 modules
2014:
24 modules
XM-3 XM-2
XFELX-Ray Free-Elect ron LaserModule Tunnel Installation: 1+83 modules
5 July 2016 TTC Meeting, Saclay 11
Seven modules need(ed) repair: XM8, XM22, XM24, XM46,
XM50, XM54, XM91
XM29
XFELX-Ray Free-Elect ron LaserProduction Throughput
5 July 2016 TTC Meeting, Saclay 12
• 5 day throughput was reached mid-October 2014 with XM15
the design of the Assembly Infrastructure was sound
• 4-day throughput was reached in January 2015 with XM25
Courtesy
June 2016: XM95
March 2014: XM1
XFELX-Ray Free-Elect ron LaserThroughput at Cold Coupler WS
5 July 2016 TTC Meeting, Saclay 13
Courtesy
days
Cold coupler assembly
XFELX-Ray Free-Elect ron Laser
Throughput at String Assembly WS
5 July 2016 TTC Meeting, Saclay 14
Courtesy
days
String assembly
XFELX-Ray Free-Elect ron Laser
Throughput at Roll-Out WS
5 July 2016 TTC Meeting, Saclay 15
Courtesy
da
ys
d
ays
Cantilever Warm coupler assembly
Alignment Roll-out
XFELX-Ray Free-Elect ron LaserImproving Integration Processes
5 July 2016 TTC Meeting, Saclay 16
Acceleration and Quality of Production benefited mostly from:
• New clean room assembly procedure: moving individual cavity venting
after the leak check of the cold coupler assembly, rather than later,
before the string assembly. This eliminates one connection to pumping
stations for cavity venting, and one valve closing-opening cycle.
• New equipment, e.g. string leak test plexi-box:
• Pure Argon gas for Titanium welding, instead of He-Ar (50%-50%),
to avoid the long and unpredictable time to pump and purge the LHe
tank to reach the He background for the leak test (LT) by external
accumulation.
• Reducing the impact of non-conformities, particularly imported NC.
More human resources have been put on incoming inspection and QC.
XFELX-Ray Free-Elect ron LaserQuality Control: Non Conformities
Non Conformities recorded by Alsyom fall into 3 categories:
1) Tooling and equipment (TOOLING), responsibility by CEA/DESY
2) Accelerator components (PRODUCT), responsiblity by suppliers
3) Assembly operations (PROCESS), responsibility Alsyom
The number of PRODUCT Non-Conformities has not gone down.
But, with better and more efficient detection at incoming inspection, the
impact of PRODUCT NC on the module assembly has considerably
decreased, compared to when many NC were discovered ‘on the fly’.
5 July 2016 TTC Meeting, Saclay 17
XFELX-Ray Free-Elect ron LaserQuality Control
The Quality Control of QC is needed !
5 July 2016 TTC Meeting, Saclay 18
Quadrupole Unit Transport:
QC by Alsyom
Quadrupole Unit Transport:
QC by DESY
XFELX-Ray Free-Elect ron LaserCryomodule Performance at AMTF
• AMTF average gradient is 18% above specs : Eacc = 27.9 MV/m.
• All but 5 of 98 tested modules are on XFEL specs (23.6 MV/m):
• XM33, XM58 and XM68 are limited by individual cavity performance
• XM45 was impacted by a clean room power outage
• XM46 was impacted by beam vacuum leaks
5 July 2016 TTC Meeting, Saclay 19
Average operating gradient per cryomodule, clipping the VT results to 31 MV/m
XFELX-Ray Free-Elect ron LaserXM68 Performance
5 July 2016 TTC Meeting, Saclay 20
Cavity 3: Q0 < 1010 in AMTF test (who knows ?)
Cavity 8: field emission has disappeared in AMTF.
It is not an isolated case !
Cavity field emission Quench Limit
Operating Gradient
CAV8
VT @ 31 MV/m
MT @ 31 MV/m
VT @ 20 MV/m
XFELX-Ray Free-Elect ron LaserCryomodule Performance : XM45
5 July 2016 TTC Meeting, Saclay 21
XM45 string assembly was interrupted by an accidental power outage
with operators leaving the clean room for safety reasons, while a string of
3 cavities was under N2-flushing.
We have no good explanation for cavity 4 and 8 gradient degradations.
Eacc = 22,8 MV/m
XFELX-Ray Free-Elect ron LaserCryomodule Performance : XM46
5 July 2016 TTC Meeting, Saclay 22
XM46 string was leaky in the clean room AND before shipment. Both
leaks have been repaired at Saclay but they generated 3 extra connections
of the beam vacuum to pumping groups, and 2 additional venting-pumping
Eacc = 19,7 MV/m
XFELX-Ray Free-Elect ron LaserCryomodule Performance at AMTF
• Red bars include 97 modules (776 cavities): 47% of the cavities are power limited at 31 MV/m.
• Blue bars include only the last 43 modules (344 cavities) with simplified clean room procedures:
59% of the cavities are power limited at 31 MV/m.
• This is the optimistic-bias view of the ‘half-full glass’, combining good cavity production and
good module assembly.
5 July 2016 TTC Meeting, Saclay 23
XFELX-Ray Free-Elect ron LaserXM71 Performance
Cavities 2,4, 6 and 8 have higher field emission
in VT (@quench limit gradient) than in AMTF
(@ 31 MV/m power limit).
24 5 July 2016 TTC Meeting, Saclay
Cavity field emission Quench Limit
Operating Gradient
MT @ 31 MV/m
VT @ 34-38 MV/m
XFELX-Ray Free-Elect ron LaserXM62 Performance
25 5 July 2016 TTC Meeting, Saclay
Cavity field emission Quench Limit
Operating Gradient
MT @ 31 MV/m
VT @ 32-38 MV/m
• Cavities 5,6,8 warm coupler parts were
exchanged at DESY after to coupler over-
heating during TEST01.
• The lower performance of cavity 5 at TEST02
can be caused by the cavity venting needed
for the coupler repair operation.
XFELX-Ray Free-Elect ron LaserAbout Gradient Comparison
• Accelerating gradients are the most scrutinized module performance
parameters, although heat loads, alignment and PED certification are
entering the acceptance criteria.
• The absolute gradient is the result of the whole production chain,
from the Nb sheet to the module test (MT). It is mostly determined by
cavity manufacturing and module assembly.
• The quality of module assembly shows in the gradient difference
between cavity acceptance (VT) and module acceptance (MT).
• The VT vs. MT comparison of both the ‘maximum’ and the
‘operational’ gradients is impaired by a systematic error:
1. Maximum gradients depend on 1) RF duty cycle, 2) cooling conditions and,
3) magnetic environment, which are completely different from VT to MT
mostly cavity-independent error
2. Operational gradients depend, in addition, on X-Ray measurement
devices which are different from VT to MT (although cross-calibrated)
mostly cavity-independent error
3. Finally, Q0 is not measured in MT: therefore the MT usable gradient could
correspond to lower or higher Q0 values cavity-dependent error
5 July 2016 TTC Meeting, Saclay 26
XFELX-Ray Free-Elect ron LaserCryomodule Performance: VT vs. MT
• Significant gradient degradation from XM6 to XM23, while CEA and Alsyom put all their effort
in achieving production goal of 1 CM/week: an audit of string and module assembly was
conducted by CEA on XM26
• A simplification of the clean room procedures was introduced at XM54: no degradation after
5 July 2016 TTC Meeting, Saclay 27
1st sample of 34 series CM
Eop = -2.1 MV/m
2nd sample of 19 series CM
Eop = -1.7 (-0.9) MV/m
last 42 series CM
Eop =+0.4 MV/m
CEA Audit New clean
room procedure
XFELX-Ray Free-Elect ron LaserXM26 Clean Room Assembly Audit
Audit Findings:
• Operators walk too fast in the clean room.
• Record the cleanliness level (< 10 particles / min) reached on the
angle valve before the pump connections to the cavity (CC and SA).
• Two operators are requested to connect cavity to the pumping
system (CC and SA).
• Two operators are requested to position inter-cavity bellows and
screw first 4 studs (SA).
• Pre-alignment of parts (coupler and cavity flanges at CC, inter-cavity
bellow/cavity-coupler-side flange at SA) is requested for easy and
clean assembly.
• Improvement of operator positions versus critical RF surfaces (avoid
top assembly, request seated).
• Gate valve connection to pumping system procedure has been
reviewed recently to ensure better cleanliness (CC).
5 July 2016 TTC Meeting, Saclay 28
XFELX-Ray Free-Elect ron LaserSA-WS: pre-alignement of bellows
Observation during XM26 assembly
5 July 2016 TTC Meeting, Saclay 29
XFELX-Ray Free-Elect ron Laser
Cavity reception skipped:
avoids one leak check (LC),
including one angle valve
connection to pump unit,
and one open/close cycle
Clean Procedures: Cavity History
Abritrary units except for pressure level
5 July 2016 TTC Meeting, Saclay 30
Procedure n°1 : XM-3 to XM3
Courtesy S. Berry
Procedure n°2 : XM4 to XM53 (except XM27)
Cavity
Reception
Cold coupler assembly String assembly
Cavity history
Fin
al
LC
Cold coupler assembly String assembly
Fin
al
LC
Str
ing
LC
Str
ing
LC
Clean room assembly
Up
str
. fl
an
ge
Do
wn
st.
fla
ng
e
Clean room assembly C
ou
ple
r L
C
Co
up
ler
LC
LC
Ca
vit
y L
C
Cavit
y L
C
XFELX-Ray Free-Elect ron LaserClean Procedures: Cavity History
5 July 2016 TTC Meeting, Saclay 31
Procedure n°3 : XM27,
then XM54 +
Courtesy S. Berry
Procedure n°4 : XM75-79,
XM93-94
Cavit
y v
en
tin
g
Cold coupler assembly String assembly
Cavity history
String and coupler assembly
Clean room assembly
Up
str
. fl
an
ge
Do
wn
st.
fla
ng
e
Clean room assembly
Cavity string assembly is
followed by connection of
the 8 cold couplers w/o
pumping. This solution was
implemented during coupler
shortage periods: it saves
labor and and vacuum
operation.
Six days are needed to
assemble a full cavity string.
Co
up
ler
LC
Str
ing
LC
Fin
al
LC
F
ina
l L
C
Str
ing
LC
Cavit
y L
C
Cavit
y L
C
XFELX-Ray Free-Elect ron LaserClean Procedures: Comparison
5 July 2016 TTC Meeting, Saclay 32
Procedure n°1 n°2 n°3 n°4
# Gate valve to pipe connections 20 22 14 14
# Gate valve open/close cycles 29 21 13 13
# N2 blowing after an opening 17 17 9 9
# Leak checks 48 40 32 23
Number of vacuum operations for a complete cryomodule assembly
XFELX-Ray Free-Elect ron LaserCryomodule Performance: Procedure n°1
5 July 2016 TTC Meeting, Saclay 33
XM-3 : First pre-series module, 100 % made by CEA
(MT)
Module with large-grain cavities, will not go in the XFEL Tunnel
XFELX-Ray Free-Elect ron LaserCryomodule Performance: n°1-2 vs. n°3-4
5 July 2016 TTC Meeting, Saclay 34
Procedures n°3 and n°4
42 cryomodules
Eop = +0.4 MV/m
Procedures n°1 and n°2:
54 cryomodules
Eop = -2.0 MV/m
XFELX-Ray Free-Elect ron LaserCryogenic Heat Loads (XM1-XM95)
5 July 2016 TTC Meeting, Saclay 35
14 W at 2K
Specs for module static
+ dynamic heat loads
measured at 23,6 MV/m
16 W at 5/8K
125 W at 40/80K
Courtesy S. Putselyk,
S. Barbanotti
XFELX-Ray Free-Elect ron LaserPED Certification of He-Tank Ti Welds
5 July 2016 TTC Meeting, Saclay 36
• Implementing and complying to the PED certification, in particular the RT norms
‘NF EN ISO 17636-1 (2013) class B ’ for the execution and ‘NF EN ISO 10675-1
(2013) level 1’ for the interpretation, was a major effort over the year 2013,
spanning XM-1 to XM11 modules.
• The porosity problem in the Titanium orbital welds was
overcome by a combination of process cleanliness,
US cleaning of Ti-bellows and welder ‘humility’.
• Alsyom has successfully
taken over welding
coordination within the
‘EN ISO 3834-2’ norm.
Level 2 pores are repaired or subject to exemption.
No pore beyond 0.5 mm diameter, ‘level 1.5’.
Courtesy S. Barbanotti
XFELX-Ray Free-Elect ron LaserSummary of Module Repairs
5 July 2016 TTC Meeting, Saclay 37
XM24 involved the repair of a beam vacuum leak and of a coupler warm part
XFELX-Ray Free-Elect ron LaserSummary of Module Repairs
Non
conformity Repair Status
XM-2 Missing
PED – stamp
• Disassembled till 2-phase pipe accessible
• X-ray and TÜV check
• Retest OK
Module tested and installed in the
tunnel
XM8 Leak at 2 K
area
• Disassembled till 2-phase pipe is accessible
• Leak check and leak repair
• Retest OK but smaller leak at room T.
Module tested, leak reappeared
after warm-up.
Not accepted for tunnel
installation
5 July 2016 TTC Meeting, Saclay 38
Leak localized in the 8 mm / 10 mm transition from cavity vendor
(3 cases over the in total production)
XFELX-Ray Free-Elect ron LaserSummary of modules and repairs (2/2)
Non conformity Type of repair Comment
XM22
Leak at beam vacuum,
occurred after cool-down,
unstable cryogenics
conditions and warm-up
• Leaky HOM feedthrough ->
exchange under local clean room
• AMTF second test OK !!
Module tested
XM24
Leak at beam vacuum,
occurred after cool-down,
RF test and warm-up
• Leaky RF pick-up feedthrough ->
exchange under local clean room
• AMTF second test OK !!
Module tested
XM46 Leak at beam vacuum
• Disassembled till string hanging in
cold mass
• Leak check -> tightening of the leaky
cold coupler connection on Cavity 4.
In use at CMTB: strong dark
current measured Cavity 6.
Not accepted for tunnel
installation.
XM50 Leak at beam vacuum
• Disassembled till string hanging in
cold mass
• Leak check -> no leak found?
Module tested: strong FE and
leaky again !
Not accepted for tunnel
installation
XM91
Leak at beam vacuum,
occurred during coupler
repair after cool-down,
RF test and warm-up
• Leaky HOM feedthrough ->
exchange under local clean room
• Repair in progress
Module retested ??
5 July 2016 TTC Meeting, Saclay 39
XFELX-Ray Free-Elect ron LaserSummary of Test Results
Repair performed Tested
XM-2 at DESY Yes, OK
XM8 at DESY Yes, not usable in tunnel
XM22 at DESY Yes, OK
XM24 at DESY Yes, OK
XM46 at Saclay Yes, not usable in tunnel
XM50 at Saclay Yes, not usable in tunnel
XM54 at Saclay Yes, OK
XM91 at DESY, in progress Not yet
5 July 2016 TTC Meeting, Saclay 40
XFELX-Ray Free-Elect ron LaserXM50 repair
Problem: leak at the beam vacuum at 5x10-9 mbar.l/s before shipment
Repair:
• module disassembled till cavity string accessible
• Leak tests are negative: elusive leak on beam vacuum !
• A ‘leak’ of 10-10 mbar.l/s is detected on one of the angle valve
connected to a gate valve, already found in the clean room.
41 5 July 2016 TTC Meeting, Saclay
XFELX-Ray Free-Elect ron LaserRepair and Leak Check of XM50
• Decision on re-assembly.
• Lack of communication at Alsyom and of supervision by CEA: the
cold coupler bellow stiffeners are removed under beam vacuum
conditions and the module is transferred with fully compressed
cold bellows.
• Decision to continue and module is leak tight at shipment.
• The beam vacuum leak re-appeared at DESY → XM50 is discarded
5 July 2016 TTC Meeting, Saclay 42
Field emission
levels are very high
in most cavities
XFELX-Ray Free-Elect ron LaserXM22 repair
Problem: leak at the beam vacuum
Repair:
• module disassembled till cavity string accessible (at the cantilever)
• Leak test performed -> leak found at a HOM connector at Cav. 7 HOM
connector (CAV00613)
• HOM exchanged with local clean room -> new leak check -> no leak
Duration of the repair: 54 days
Results: cavity 7 with the new HOM does not show degradation
43 5 July 2016 TTC Meeting, Saclay
XFELX-Ray Free-Elect ron Laser
Module was disassembled for best access to
area of HOM Coupler at beam tube cavity
long side
A local cleanroom tent with horizontal
laminar air flow of ISO 4 Air quality is set up
XM22 - HOM Pick-up Exchange
5 July 2016 TTC Meeting, Saclay 44
XFELX-Ray Free-Elect ron Laser
Control and acceptance test
Air flow <= 0,35m /sec (anemometer)
Air quality n <= 10 Part. 0,3µm / sqft (Air
particle counter)
Surface particle contamination
n <= 10 Part. 0,3µm / sqft (Ionizer air
gun and Surface air flow based particle
counter)
Flow direction horizontal Clean room /
Fog generator
Local turbulences by accessories and
operator / fog generator
Surface area that could not be cleaned sufficiently, are covered
with anti static cleanroom foil
XM22 - HOM Pick-up Exchange
5 July 2016 TTC Meeting, Saclay 45
XFELX-Ray Free-Elect ron Laser
Work process is monitored by air particle counter
located below the HOM Coupler port
Exchange procedure is controlled and recorded by a
second operator outside of local cleanroom tend
XM22 - HOM Pick-up Exchange
5 July 2016 TTC Meeting, Saclay 46
XFELX-Ray Free-Elect ron LaserXM22 Performance
47 5 July 2016 TTC Meeting, Saclay
Quench Limit
Operating Gradient
Cavity 7
Cavity 7
XFELX-Ray Free-Elect ron Laser
Preparation of XM54 cold mass on Roll-out Workstation
Downstream end connected for N2 flushing
and leak check
XM54 – Gate Valve Exchange
5 July 2016 TTC Meeting, Saclay 48
Leaky gate valve on its temporary support
XFELX-Ray Free-Elect ron Laser
Installation of local clean room hutch
The exchange procedure is controlled by a particle counter
in local cleanroom hutch and recorded
XM54 – Gate Valve Exchange
5 July 2016 TTC Meeting, Saclay 49
horizontal FFU laminar flow
XFELX-Ray Free-Elect ron Laser
Mechanical operations for gate valve exchange
Supporting the leaky gate valve on the sliding table
XM54 – Gate Valve Exchange
5 July 2016 TTC Meeting, Saclay 50
Connection of the new gate valve
under N2 flushing from both ends
XFELX-Ray Free-Elect ron Laser
Leak check of the connection,… and of the gate valve:
XM54 – Gate Valve Exchange
5 July 2016 TTC Meeting, Saclay 51
Coupler cold part holder
All coupler cold bellows were held stiff during
leak check and venting phase, except that of
coupler 1 !
As a consequence, coupler 1 cold bellow was
fully (axially) compressed during leak check.
XFELX-Ray Free-Elect ron LaserXM54 Performance
Cavity 1 is strongly degraded by field emission.
Possible causes are a) exposure to gate valve,
b) cold coupler bellow full compression.
52 5 July 2016 TTC Meeting, Saclay
Cavity field emission Quench Limit
Operating Gradient
Cavity 1
MT @ 24 MV/m
VT @ 33-38 MV/m
XFELX-Ray Free-Elect ron LaserConclusions for Cryomodule Assembly
• E-XFEL Cryomodule Assembly at Saclay implied 4 main overlapping
phases:
1. Mastery of assembly procedures [ T1/2008 – T1/2013 ], with XM-3
2. Mastery of infrastructure and tooling [ T3/2010 – T1/2013 ], at XM-1
3. Mastery of non-conformities handling, both imported-PRODUCT and
PROCESS-generated non-conformities [ T3/2012 – T3/2014 ], at XM15
4. ‘Mastery’ of the industrial operator
• Productivity [ T1/2014 – T4/2014 ], at XM25
• Quality Assurance [ T4/2014 – ongoing ]
This process depends on the early availability of the cryomodule
components: ‘Practice makes perfect’
• The difficulties and the risks of coupler assembly had been under-
estimated by CEA, especially for the coupler warm part
• Better module RF performance is correlated to Clean Room practice and
Clean Room procedures.
• The goal of ‘zero mistake’ has been missed: the rate of ~ 1 major
mistake every 2 weeks is an organisational problem.
5 July 2016 TTC Meeting, Saclay 53
XFELX-Ray Free-Elect ron LaserConclusions (2/2)
• E-XFEL Cavity production demonstrates the existence of EU vendors
for cavities in the range 30 – 40 MV/m.
• E-XFEL AMTF demonstrates that RF testing is feasible) at a rate
compatible with one ILC hub, even if 100% MT is the chosen option:
11-day cycle per module, with 3 MT bunkers in AMTF
• E-XFEL Cryomodule Assembly demonstrates that a 3-day throughput
is feasible for ILC production, leading to about 120 modules per year
on one production site.
• When all assembly equipments are operating under nominal
conditions, there are clear indications that RF performance of the
cryomodules is impaired by:
• The invasiveness of operators in the clean room
• The invasiveness of vacuum operations on the beam vacuum. Both
can be mitigated with good quality control and floor inspections
• Clean room assembly can be further improved, qualitatively and
quantitatively, e.g. by unifying cold coupler and string assembly in a
unique workstation (2 shifts required to achieve 3-day throughput).
5 July 2016 TTC Meeting, Saclay 54
XFELX-Ray Free-Elect ron Laser
Thanks to my co-workpackage leaders:
WP03 K Jensch, WP09 S. Berry and A. Matheisen
Thanks to the CEA team:
C. Cloué, C. Madec, S. Régnaud, C. Simon
C. Boulch, P. Charon, J-P. Charrier, M. Fontaine, Y. Gasser, G. Monnereau,
J-L. Perrin, T. Trublet, B. Visentin
Thanks to ALSYOM
P. Pluvy, J. Dumas, C. Abdi, F. Déau, F. Chatillon,
M. Jurado and their team, G. Guillonneau (SEIV)
Thanks to DESY and LAL colleagues
S. Barbanotti, M. Schmöckel, H. Hintz, F. Hoffmann, W. Kaabi, D. Käfer,
R. Klos, L. Lilje, W. Maschmann, M. Schlösser, A. Verguet, and many others
Acknowlegments for Module Integration
5 July 2016 TTC Meeting, Saclay 55
the last of
the cavities
XFELX-Ray Free-Elect ron Laser
5 July 2016 TTC Meeting, Saclay 56
Thank you for your attention
XFELX-Ray Free-Elect ron Laser
5 July 2016 TTC Meeting, Saclay 57
Back-up slides
XFELX-Ray Free-Elect ron LaserAssembly Procedures
5 July 2016 TTC Meeting, Saclay 58
• The preparation, assembly and control work are described
in 145 procedures, ‘Fiches d’Instruction’, ‘used’ by the
operators.
• The first set of draft procedures was written by CEA, during
the Prototyping phase at DESY and Saclay, in English and
appended to the Call for Tender Specifications for Industrial
Operator selection
• Alsyom, the selected Industrial Operator, was in charge of
updating these procedures during the Pre-Series phase (3
modules) and to translate them in French for their usage
during the Series production phase.
• This process took much longer than expected.
XFELX-Ray Free-Elect ron LaserAssembly Procedures
5 July 2016 TTC Meeting, Saclay 59
XFELX-Ray Free-Elect ron LaserAssembly Procedures
5 July 2016 TTC Meeting, Saclay 60
XFELX-Ray Free-Elect ron LaserAssembly Procedures
5 July 2016 TTC Meeting, Saclay 61