Status of the XFEL.EU Undulator Systems

J. Pflüger, European XFEL

Status of the XFEL.EU Undulator Systems

Status of Undulator Systems

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LBL Visit Sept 3, 2013J. Pflueger, European XFEL

Overview

XFEL.EU Undulator Systems & Controls Undulator Segments

Serial Production of Undulator Segments: Representative Results

Intersections Summary


3


Undulator Systems


4


European XFEL Overview

Aerial View

SC AcceleratorDogleg

SwitchyardSASE 1

SASE 2

SASE 3 Dumps

Injector

Accelerator Layout

SASE 1- 3 : Undulator Systems

W. Decking

e -

SASE2

SASE2 SASE1/3 Downstream View

Tunnel Installation of SASE2 Undulator System – Final WP71 Deliverables

e -

Intersection1.1 m

Undulator Segment 5m

Undulator Cell 6.1m

W.Tscheu

Local Control Systems

SASE1/2 SASE30 [mm] 40 68Operational Gap Range [mm]

10-20 10-25

K-Range 3.9–1.65 9.0-4Radiation WavelengthRange [nm]

@ 17.5 GeV 0.147-0.040 1.22-0.27@ 14.0 GeV 0.230-0.063 1.90-0.42@ 8.5 GeV 0.625-0.171 5.17-1.15

# of Segments 35 21System Length [m] 213.5 128.1


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XFEL 2012 User Meeting Jan 23, 2013J. Pflueger, XFEL

Undulator Control System

Developed at XFEL.EU XFEL.EU guidelines & standards Based exclusively on industrial

Automation Technology Using the fast EtherCAT protocol Hardware from Beckhoff GmbH Running the TwinCAT software The Topology reflects Hardware

Up to 35 Local Control Systems in Tunnel

Global Controlin Computer Service Room

ExternalAccessfor DOOCSand Experiments

1…. up to 35

S. Karabekyan, A Beckmann, M. Yakopov


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Undulator Segments


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Standard Undulator Segment Support Structure

Special Attention: 1. Shear deformation and compressive deformation 2. Material pairing / Bimetallic bending3. Four point support of girders 4. Four Motors, electronic gears 5. Forced girder guiding6. Precision measurement of gap / Motor feedback to ±1µm, avoiding Abbé errors

Gap MeasurementAccuracy ±1µm


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Magnetics I: Design

Standard Support System with Standard Interface

Different Magnet Structures may be adopted

Same Material for girder and Magnet support structure: AlMg

Structure is segmented into~ 0.9m long modules + End sections

Structure is clamped onto the interface


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Production of Undulator Segments The Focus is on Serial Production. R&D is long ago!! Industrial Part

Mechanical Support System including Local Motion Control System: 2 Suppliers

Magnetic Structure Documentation in EDMS

XFEL.EU Part Integration: Mechanics & Magnetics @ XFEL.EU Commissioning @XFEL.EU Magnetic Measurement & Tuning Preparation for Installation Documentation in EDMS


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Production Cycle: Industrial Production

July 2012

Dec 2012

Local Control Systems

Magnetic StructuressMechanical Support Systems

Dec 2012

July 2012

Nov 2012

Nov 2012


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Production @ XFEL.EU in Building 363 climatized Magnetic Labs

Incoming Magnetic Structures from VAC

Assembly Area for Magnetic Structures

New Undulator Segments

Segments waiting for Magnetic Measurements

Measured and tuned Segments

2nd Hall with 700m2 for storage

Steps @ XFEL.EU: Mounting of magnetic

structures 1st Commissioning Magnetic

Measurements & Tuning

Preparation for Installation

Schedule: Total Time 2 Years

(starting Oct/12) 3 Weeks/Segment ! 3 Magnetic Labs

needed running in parallel

Scheduled End: Oct / End 2014

December 2012


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Results

Magnetic Measurements

U. Englisch, Y. Li, S.Utermann, F. Wolff-Fabris


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Pole Tuning at XFEL Undulator Segments 14

5m

U40: 246 pairs of polesU68: 144 pairs of polesBY and BZ tuning is combined

No Shims are used All errors are tuned by moving Poles Bipolar Field Corrections

Tuning Screws

300m 4mrad

Locking Screws


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BY Field: Pole Height Tuning I

-100 -50 0 50 100

-1.5

-1.0

-0.5

0.0

0.5

1.0

1.5

-1-1-1-1

+1/2 +1+1+1

By[T

]

Z[mm]

Model Field: mm, BMax

=1T, 4 Periods

+1/21 2 3 4 5 6 7 8 9

Local K-Tuning

-80 -60 -40 -20 0 20 40 60 80

0,00

0,01

0,02

0,03

Nor

m. S

igna

ture

(T/m

m)

3 41 2

0

-1-2-3-4

X (mm)

FLASHDetermination of ai

𝑆 𝑗=∑𝑖=− 3

3

𝑎𝑖𝑝 𝑗+𝑖

Local Field Change

Local gap change

Influence of neighbors

Limit to 3 next neighbors 300m


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BY Field: Pole Height Tuning II

NiNiNNNN

NjNijijjjj

NNii

NNii

NNii

papapapapaS

papapapapaS

papapapapaSpapapapapaSpapapapapaS

0332211

332211

333021123

223120112

113221101

........

........

........

.................

Tuned Poles:U40: N =246U68: N= 144

-80 -60 -40 -20 0 20 40 60 80

0,00

0,01

0,02

0,03

Nor

m. S

igna

ture

(T/m

m)

3 41 2

0

-1-2-3-4

X (mm)

The Characteristic Coefficients ai were measured for U40/U68: For the 3 poles next to the end ‘End Poles’ For all other poles ‘Bulk Poles’ Tuning done at the ‘Tuning Gap’:

U40: 14mmU68: 16 mm

Most Poles need to be tuned One Tuning Step is (usually) sufficient

Bulk poles


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BZ Field: Pole Tilt

-4000 -3000 -2000 -1000 0 1000 2000 3000 4000

0

50

100

150

200

250

InitialRMS: 64.5 Tmm2

FinalRMS: 2.13 Tmm2

2nd B

z Fie

ld In

tegr

al [T

mm

2 ]

X [mm]

Polygonial ApproximationVertex positions controlled by RMS criterion

U40-X001 4mrad

BZ is due to errors only. Ideal BZ trajectory 2nd Field Integral is a Null line Correction by Tilting Poles

0 [mm]

TuningGap [mm]

Tilt KickSignature[Tmm/mrad]

U40 40 14 0.0127

U68 68 16 0.0325


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Pole Tuning: U68-X003-N001 @ Gap=16mm

0 50 100 1506,32

6,34

6,36

6,38

6,40

6,42

6,44

6,46 U68-X003Gap 16mm

Pole Number

Loca

l K-P

aram

eter

Before Tuning After Tuning

-3000 -2000 -1000 0 1000 2000 3000-40

-20

0

20

40 U68-X003Gap 16mm

Before Phase Jitter: 15.6Degree After 2.1Degree

Pha

se E

rror

on

Pol

es [D

egre

e]

X [mm]

-3000 -2000 -1000 0 1000 2000 3000-400

-300

-200

-100

0

100

200

300U68-X003Gap 16mm

Before RMS = 110 Tmm2

After RMS = 83 Tmm22nd B

Y Fie

ld In

tegr

al [T

mm

2 ]

X [mm]-3000 -2000 -1000 0 1000 2000 3000

-300

-200

-100

0

100

200 U68-X003Gap 16mm

2nd B

Z Fie

ld In

tegr

al [T

mm

2 ]


After RMS = 31 Tmm2

X [mm]


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Another U68: U68-X048

0 20 40 60 80 100 120 1406,30

6,32

6,34

6,36

6,38

6,40

6,42

Loca

l K-P

aram

eter

Pole Number

Before After

U 6 8-X 0 4 8Gap=16 mm

-3000 -2000 -1000 0 1000 2000 3000-30

-25

-20

-15

-10

-5

0

5

10

15

U 6 8-X 0 4 8Gap=16 mm

Phas

e Er

ror o

n Po

les

[°]

Z [mm]

Before After

Phase Jitter:Before: 6.16473 degAfter: 0.83342deg

-3000 -2000 -1000 0 1000 2000 3000-40

-20

0

20

40 U68-X003Gap 16mm

Before Phase Jitter: 15.6Degree After 2.1Degree

Pha

se E

rror

on

Pol

es [D

egre

e]

X [mm]0 50 100 150

6,32

6,34

6,36

6,38

6,40

6,42

6,44

6,46 U68-X003Gap 16mm

Pole Number

Loca

l K-P

aram

eter



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10 20 30 40 50 60 70 80 901000

2

4

6

8

10

K-Parameter U68X003 U68X004

Gap [mm]

K P

aram

eter

Comparison U68-X003 - U68-X004

Operational Gap Range

0

2

4

6

8

10Phase

U68X003 U68X004

U68-X003 / X004: Comparison of Gap dependent Results

Specs Result

Operational Gap Range [mm]

10-25 ---

B0 @ 10mm Gap [T] 1.69 1.66

K @ 10mm Gap 10.5 9.3

RMS I2Y [Tmm2] < 210 < 90

RMS I2Z [Tmm2] < 100 < 70

Phase Jitter [°] < 8 < 8

10 20 30 40 50 60 70 80900

10

20

30

40

50

60

70

U68-X003 U68-X004



RM

S 2nd

Inte

gral

of B

x [Tm

m2 ]

Gap [mm]

10 20 30 40 50 60 70 80 901000

20

40

60

80

100


U68X003 U68X004


RM

S 2nd

Inte

gral

of B

y [Tm

m2 ]

Gap [mm]

Transverse Overlap

K-ParameterLongitudinal Overlap / Phase Jitter


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Pole Tuning : U40-X044-K004 @ Gap=14mm

0 50 100 150 200 250

2.68

2.70

2.72

2.74

2.76

2.78

2.80 U40-X044Gap 14mm

Pole Number

Loca

l K-P

aram

eter


-3000 -2000 -1000 0 1000 2000 3000

-10

0

10

20

30

40U40-X044Gap 14mm

Before Tuning RMS = 7.4 Degree After Tuning RMS = 2.3 Degree

Phas

e Er

ror o

n Po

les

[Deg

ree]

X [mm]

-3000 -2000 -1000 0 1000 2000 3000

-300

-200

-100

0

100

200 U40-X044Gap 14mm


After RMS = 2.39 Tmm2

2nd B

Z Fie

ld In

tegr

al [T

mm

2 ]

X [mm]-3000 -2000 -1000 0 1000 2000 3000

-300

-200

-100

0

100

200

2nd B

Y Fie

ld In

tegr

al [T

mm

2 ]

U40-X044Gap 14mm


After RMS = 25 Tmm2

X [mm]


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U40-X044 / X004: Comparison of Gap dependent Results

10 20 30 40 50 60 70 80 900.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

K-Parameter U40-X044 U40-X006

Gap [mm]

K P

aram

eter

Comparison U40-X044 U40-X004

Gap Range

2

4

6

8Phase

U40-X044 U40-X006

RM

S Phase Jitter [Degree]

10 20 30 40 50 60 70 80 90100

0

10

20

30

40

U40-X044 U40-X006


RM

S 2nd

Inte

gral

of B

z [Tm

m2 ]

Gap [mm]


10 20 30 40 50 60 70 80 9010010

20

30

40

50

60

70

80

U40-X044 U40-X006

RM

S 2nd

Inte

gral

of B

Y [Tm

m2 ]


Gap [mm]


Specs Result

Operational Gap Range [mm]

10-20 ---

B0 @ 10mm Gap [T] 1.14 1.13

K @ 10mm Gap 4 3.9

RMS I2Y [Tmm2] < 100 < 50

RMS I2Z [Tmm2] < 100 < 40

Phase Jitter [°] < 8 < 7

Transverse Overlap

K-ParameterLongitudinal Overlap / Phase Jitter


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Comparison of Magnetic Results

Measurement Results be independent of the Bench Comparison of Measurements done at all labs

Influence of low temperature exposition

Further Plans: Influence of Transport Conditions to Osdorfer Born

10 1000

2

4

6

8

U40-X001 Comparison

XFEL#1: Oct12, hybrid XFEL#2: Sept12, hybrid XFEL#3: Nov12, 3D sensor XFEL#3: Mar13, after

Temperature Test

Phas

e Ji

tter (

0 )

Gap (mm)

Operational Range

U40_X001_K001

20 0 24 48 72 960

5

10

15

20

Undulatormoved intothe Hall

Start 15.02.13 at 10:00AM

Device 1 Device 2, Channel 1 Device 2, Channel 2

Tem

pera

ture

(0 C)

Time (Hours)

Undulator moved outside the Hall

U40_X001 Temperature Shock Test

≈2°C


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Present Status of Production

Status of Undulator Production August 22, 2013 Delivery Status:

• 64 Support Systems• 54 Magnet structures

Prepared for Measurements: 48 Waiting for magnetic measurements: 10 Segments Measured, tuned, ready for Installation: 38 Magnetic Length: 190m

Scheduled End of Production: 12 / 2014


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Intersections


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SASE2 Type Intersection

WP71

Quadrupole Movers

WP71

Phase Shifters

Re-entrant Cavity BPMs+ Electronics

WP17

WP71

Support BasesAdjustorsConcrete Pillars

WP71

Air CoilCorrectors

Beam Loss Monitors

WP17

WP19Vacuum System

Status 1/2013: Delivered: Quadrupoles, WP12 In Production 91 Intersections:

• Phase Shifters (Nov 12), WP71• BPMS, WP17 • BLMs, WP17• Vacuum systems, WP19• Air Coil Correctors, WP71 • Base Plates, WP71• Adjustors, WP71 • Concrete Pillars , WP71• Quadrupole Movers, Ciemat

Released for production:• Control Cabinets Ciemat (Oct 13)

Start of Assembly @ XFEL: June 2014

WP12

Quadrupoles


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Phase Shifter Prototypes by IHEP Beijing

Tolerance Band &Operational Range

− Period length: 55mm − Gap range: 10.5 to >100mm− Max. Phase Integral

@ gap 10.5mm : 23400 T2mm3

− 1st Hor/Ver Field Integral Tolerance: ±0.004 Tmm

− Dynamic Operation without retuning! − 2nd Hor/Ver Field

Integral Tolerance: ±67 Tmm2

− Phase adjustment accuracy: ± 10° (5°)

− Min. Gap precision for 5/10° at SASE1/2 ±15/30 µm

H. Lu, S. Sun, C. Wan, IHEP, Beijing

H. Lu, Y. Li, J. Pflueger, NIM A605 (2009),399


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Summary

Production of Undulator Segments in full Swing Industrial Production is well in Schedule Magnetic measurements & Tuning @XFEL.EU

being ramped up Magnetic Measurements & Tuning:

Methods and techniques work fine 38 Segments tuned to Specs “Ready for Installation”

Intersections: Phase Shifter Prototypes in Specs All Components are in production

Production of Undulator Systems in schedule!


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XFEL.EU Undulator Systems Group, WP71

WP71 Status March 3, 2013, left to right: Yufang Yang, Suren Karabekyan, Xiaoyu Li, Georg Deron, Yuhui Li, Bora Ketenoglu, Uwe Englisch, Joachim Pflüger, Andreas Beckmann, Sonia Utermann, Martin Knoll, Majid Bagha-Shanjani, Fredrik Wolff-Fabris, Hongxian Lin, Karl-Heinz Berndgen, not shown: Mikhail Yakopov


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The End

Status of the XFEL.EU Undulator Systems

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