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Zachary Wolf Undulator Tuning [email protected]. edu Oct 12, 2006 1 LCLS Undulator Tuning Zack Wolf, Yurii Levashov, Achim Weidemann, Seva Kaplounenko, Scott Jansson, Ralph Colon, Dave Jensen

Zachary Wolf Undulator [email protected] Oct 12, 2006 1 LCLS Undulator Tuning Zack Wolf, Yurii Levashov, Achim Weidemann, Seva Kaplounenko,

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Page 1: Zachary Wolf Undulator Tuningwolf@slac.stanford.edu Oct 12, 2006 1 LCLS Undulator Tuning Zack Wolf, Yurii Levashov, Achim Weidemann, Seva Kaplounenko,

Zachary Wolf

Undulator Tuning [email protected]

Oct 12, 20061

LCLS Undulator Tuning

Zack Wolf, Yurii Levashov,

Achim Weidemann, Seva Kaplounenko,

Scott Jansson, Ralph Colon, Dave Jensen

Page 2: Zachary Wolf Undulator Tuningwolf@slac.stanford.edu Oct 12, 2006 1 LCLS Undulator Tuning Zack Wolf, Yurii Levashov, Achim Weidemann, Seva Kaplounenko,

Zachary Wolf

Undulator Tuning [email protected]

Oct 12, 20062

MMF Hardware Installation

FAC April 20, 2006 FAC October 12, 2006

Page 3: Zachary Wolf Undulator Tuningwolf@slac.stanford.edu Oct 12, 2006 1 LCLS Undulator Tuning Zack Wolf, Yurii Levashov, Achim Weidemann, Seva Kaplounenko,

Zachary Wolf

Undulator Tuning [email protected]

Oct 12, 20063

Undulator Work Flow

1 Week, Come to 20 C

1 Week, Rough Tuning

1 Week, Fine Tuning

<1 Week, FinishFiducialization

Peak Throughput: 1 undulator per week

Tuning Time:about 4 weeks

Page 4: Zachary Wolf Undulator Tuningwolf@slac.stanford.edu Oct 12, 2006 1 LCLS Undulator Tuning Zack Wolf, Yurii Levashov, Achim Weidemann, Seva Kaplounenko,

Zachary Wolf

Undulator Tuning [email protected]

Oct 12, 20064

MMF Temperature

Achim Weidemann

Previous two week time history at the Kugler bench

Maintenance work was done on the MMF power system causing the large changes

In general, the system meets stability requirements

Page 5: Zachary Wolf Undulator Tuningwolf@slac.stanford.edu Oct 12, 2006 1 LCLS Undulator Tuning Zack Wolf, Yurii Levashov, Achim Weidemann, Seva Kaplounenko,

Zachary Wolf

Undulator Tuning [email protected]

Oct 12, 20065

Rough Tuning Bench Components

Page 6: Zachary Wolf Undulator Tuningwolf@slac.stanford.edu Oct 12, 2006 1 LCLS Undulator Tuning Zack Wolf, Yurii Levashov, Achim Weidemann, Seva Kaplounenko,

Zachary Wolf

Undulator Tuning [email protected]

Oct 12, 20066

Rough Tuning Bench

CamMovers

Cable Handling Bench

UndulatorReference Pole

Zero Gauss Chamber

Page 7: Zachary Wolf Undulator Tuningwolf@slac.stanford.edu Oct 12, 2006 1 LCLS Undulator Tuning Zack Wolf, Yurii Levashov, Achim Weidemann, Seva Kaplounenko,

Zachary Wolf

Undulator Tuning [email protected]

Oct 12, 20067

Capacitive Sensor Alignment Performance

Undulator mechanically aligned to bench in 15 minutes

Yurii Levashov

Page 8: Zachary Wolf Undulator Tuningwolf@slac.stanford.edu Oct 12, 2006 1 LCLS Undulator Tuning Zack Wolf, Yurii Levashov, Achim Weidemann, Seva Kaplounenko,

Zachary Wolf

Undulator Tuning [email protected]

Oct 12, 20068

Scans Begin And End In A Zero Gauss Chamber

Beginningzero fieldmeasurement

Endingzero fieldmeasurement

Senis Hall probe

Zero Offset CorrectionAssume linear offset dependence on time

Page 9: Zachary Wolf Undulator Tuningwolf@slac.stanford.edu Oct 12, 2006 1 LCLS Undulator Tuning Zack Wolf, Yurii Levashov, Achim Weidemann, Seva Kaplounenko,

Zachary Wolf

Undulator Tuning [email protected]

Oct 12, 20069

Y Trajectory Shims

X-field vs. X-position

-0.004

-0.003

-0.002

-0.001

0

0.001

0.002

0.003

0.004

0.015 0.02 0.025 0.03 0.035 0.04

meters

T

Bx ShimNew Design

Smaller external fieldsUniform Bx field in gap

Yurii Levashov

Inconel

SteelSpot weld

OldShim

Design

Page 10: Zachary Wolf Undulator Tuningwolf@slac.stanford.edu Oct 12, 2006 1 LCLS Undulator Tuning Zack Wolf, Yurii Levashov, Achim Weidemann, Seva Kaplounenko,

Zachary Wolf

Undulator Tuning [email protected]

Oct 12, 200610

Rough Tuning Test Plan1) Place undulator

Use kinematic mount2) Mechanically align to test stand

Optical alignment check, use capacitive sensors and cam movers3) Magnetically align Hall probe to undulator

Move Hall probe in x and y to magnetic center4) Rough tuning

Tune x and y trajectories, anticipate magnetic shield5) Adjust gap

Measure K, adjust gap to set K to required value for that undulator6) Check alignment

Alignment may have changed from gap adjustment7) Rough tuning

Anticipate magnetic shield8) Add magnetic shield9) Check tuning

Achim Weidemann

Page 11: Zachary Wolf Undulator Tuningwolf@slac.stanford.edu Oct 12, 2006 1 LCLS Undulator Tuning Zack Wolf, Yurii Levashov, Achim Weidemann, Seva Kaplounenko,

Zachary Wolf

Undulator Tuning [email protected]

Oct 12, 200611

Each Undulator Has Its Own K Value

From Heinz-Dieter Nuhn

Page 12: Zachary Wolf Undulator Tuningwolf@slac.stanford.edu Oct 12, 2006 1 LCLS Undulator Tuning Zack Wolf, Yurii Levashov, Achim Weidemann, Seva Kaplounenko,

Zachary Wolf

Undulator Tuning [email protected]

Oct 12, 200612

Fine Tuning Bench Components

Page 13: Zachary Wolf Undulator Tuningwolf@slac.stanford.edu Oct 12, 2006 1 LCLS Undulator Tuning Zack Wolf, Yurii Levashov, Achim Weidemann, Seva Kaplounenko,

Zachary Wolf

Undulator Tuning [email protected]

Oct 12, 200613

Fine Tuning Bench

Kugler Bench

Cable Handling

Steel GirderAnd Stands

Cam Movers

UndulatorWith MagneticShield

Page 14: Zachary Wolf Undulator Tuningwolf@slac.stanford.edu Oct 12, 2006 1 LCLS Undulator Tuning Zack Wolf, Yurii Levashov, Achim Weidemann, Seva Kaplounenko,

Zachary Wolf

Undulator Tuning [email protected]

Oct 12, 200614

Kugler Bench Performance

Measurements by Georg Gassner

X Y straightness spec: < 14 μmPitch and yaw spec: < 4.2 μrad

Specs met in long block region

Page 15: Zachary Wolf Undulator Tuningwolf@slac.stanford.edu Oct 12, 2006 1 LCLS Undulator Tuning Zack Wolf, Yurii Levashov, Achim Weidemann, Seva Kaplounenko,

Zachary Wolf

Undulator Tuning [email protected]

Oct 12, 200615

Coils For Fine Tuning Bench

Field Integral Coil

Short Coil Zero Gauss Chamber

Dave Jensen

Bx, By One Undulator Period Long Coils

I1

I2

Page 16: Zachary Wolf Undulator Tuningwolf@slac.stanford.edu Oct 12, 2006 1 LCLS Undulator Tuning Zack Wolf, Yurii Levashov, Achim Weidemann, Seva Kaplounenko,

Zachary Wolf

Undulator Tuning [email protected]

Oct 12, 200616

Fine Tuning Test Plan1) Place undulator Use kinematic mount, use steel girder and stands, shield on2) Mechanically align to test stand

Optical alignment check, use capacitive sensors and cam movers3) Magnetically align Hall probe to undulator

Move Hall probe in x and y to magnetic center4) Determine the tuning axis Move in x to where K has the required value5) Tuning Tune x and y trajectories, phase6) Add phase matching shims7) Adjust field integrals Use long coil, I1 and I2 for both Bx and By8) Adjust field uniformity Add quadrupole and sextupole shims as necessary9) Final checks before gluing shims Check x and y trajectory, phase, phase matching, field integrals, uniformity

Yurii Levashov

Page 17: Zachary Wolf Undulator Tuningwolf@slac.stanford.edu Oct 12, 2006 1 LCLS Undulator Tuning Zack Wolf, Yurii Levashov, Achim Weidemann, Seva Kaplounenko,

Zachary Wolf

Undulator Tuning [email protected]

Oct 12, 200617

Fine Tuning Test Plan (cont.)10) Glue shims in place Remove y trajectory, quadrupole, sextupole, and phase shims, apply glue, replace11) Check the gap

Make sure no parts of a shim protrude into the gap12) Check for errors while gluing shims

Check x and y trajectories, phase, I1 and I2 of Bx and By, uniformity13) Map Bx and By in the retracted position14) Final results data set Measure Bx and By at x = -6, -5, …, 6 mm, y = -0.2, -0.08, 0 0.08, 0.2 mm, calculate field integrals vs z, 65 scans15) Find the x position, y=0, where K has the required value16) Add fiducialization magnets to both ends Measure offsets from beam axis to the center of the fiducialization magnets17) Rough fiducialization using alignment equipment18) Measure roll on flats at each undulator end19) Move undulator to CMM, finish fiducialization

Page 18: Zachary Wolf Undulator Tuningwolf@slac.stanford.edu Oct 12, 2006 1 LCLS Undulator Tuning Zack Wolf, Yurii Levashov, Achim Weidemann, Seva Kaplounenko,

Zachary Wolf

Undulator Tuning [email protected]

Oct 12, 200618

Fiducialization

Page 19: Zachary Wolf Undulator Tuningwolf@slac.stanford.edu Oct 12, 2006 1 LCLS Undulator Tuning Zack Wolf, Yurii Levashov, Achim Weidemann, Seva Kaplounenko,

Zachary Wolf

Undulator Tuning [email protected]

Oct 12, 200619

Hall Probe Calibration

SENIS 24-06

-50

-40

-30

-20

-10

0

10

20

30

40

50

-10 -8 -6 -4 -2 0 2 4 6 8 10

Voltage (V)

Fie

ld-0

.2*V

olt

age

(G)

SENIS 24-06

-2

-1.5

-1

-0.5

0

0.5

1

1.5

2

-10 -8 -6 -4 -2 0 2 4 6 8 10

Voltage (V)

Fie

ld (

T)

ChillerFor probetemperature

Magnet

Water NMR

MetrolabNMR

HP3458

Seva Kaplounenko

Page 20: Zachary Wolf Undulator Tuningwolf@slac.stanford.edu Oct 12, 2006 1 LCLS Undulator Tuning Zack Wolf, Yurii Levashov, Achim Weidemann, Seva Kaplounenko,

Zachary Wolf

Undulator Tuning [email protected]

Oct 12, 200620

Schedule

Robert Ruland

Page 21: Zachary Wolf Undulator Tuningwolf@slac.stanford.edu Oct 12, 2006 1 LCLS Undulator Tuning Zack Wolf, Yurii Levashov, Achim Weidemann, Seva Kaplounenko,

Zachary Wolf

Undulator Tuning [email protected]

Oct 12, 200621

Conclusion

• MMF construction is complete, temperature stability and set point accuracy requirements have been met• The rough tuning bench is complete• The Hall probe calibration system is complete• The fine tuning bench has all components complete. Some fixturing work remains.• The software is mostly complete. Some automation work remains.• Mechanical alignment takes about 15 minutes.• New Bx shims have been designed.• The fine tuning bench construction meets all specifications.• The expected throughput is one undulator per week. Each undulator, however, spends about 4 weeks in the MMF.• One reference undulator gets re-measured every fourth undulator.