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  • Report on FLASH2 Photon Beam Diagnostics...2016/03/08  · FLASH2 Photon Beam Divergence FL2 8.27 nm (9.3µJ) FL2 82,74 nm (100µJ) FL1 4,2 nm FL1 25,8 nm Marion Kuhlmann FEL Seminar
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Marion Kuhlmann FEL Seminar 05.April 2016 Report on FLASH2 Photon Beam Diagnostics • Overview of FLASH2 Photon Diagnostics. • What was done in 2016 so far. • Accomplishments of FEL beam shifts of last weeks. OPIS, Grating Spectrometer, Beamlines • What is next? What is different to FLASH1. Comments on status of operation. Comments on ‘how to operate’ and jddd features. Comments on ‘nice beam’.

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Page 1: Report on FLASH2 Photon Beam Diagnostics...2016/03/08  · FLASH2 Photon Beam Divergence FL2 8.27 nm (9.3µJ) FL2 82,74 nm (100µJ) FL1 4,2 nm FL1 25,8 nm Marion Kuhlmann FEL Seminar

Marion Kuhlmann FEL Seminar 05.April 2016

Report on FLASH2 Photon Beam Diagnostics

• Overview of FLASH2 Photon Diagnostics.

• What was done in 2016 so far.

• Accomplishments of FEL beam shifts of last weeks.

OPIS, Grating Spectrometer, Beamlines

• What is next?

What is different to FLASH1.

Comments on status of operation.

Comments on ‘how to operate’ and jddd features.

Comments on ‘nice beam’.

Page 2: Report on FLASH2 Photon Beam Diagnostics...2016/03/08  · FLASH2 Photon Beam Divergence FL2 8.27 nm (9.3µJ) FL2 82,74 nm (100µJ) FL1 4,2 nm FL1 25,8 nm Marion Kuhlmann FEL Seminar

Marion Kuhlmann FEL Seminar 05.April 2016

Photondiagnostics

More than one Absorber!

Mirrors in the tunnel

Differences to FLASH1

Online wavelengths measurement

Grating Spectrometer

in ExpHall

Page 3: Report on FLASH2 Photon Beam Diagnostics...2016/03/08  · FLASH2 Photon Beam Divergence FL2 8.27 nm (9.3µJ) FL2 82,74 nm (100µJ) FL1 4,2 nm FL1 25,8 nm Marion Kuhlmann FEL Seminar

Marion Kuhlmann FEL Seminar 05.April 2016

FLASH2: Tunnel Section

Page 4: Report on FLASH2 Photon Beam Diagnostics...2016/03/08  · FLASH2 Photon Beam Divergence FL2 8.27 nm (9.3µJ) FL2 82,74 nm (100µJ) FL1 4,2 nm FL1 25,8 nm Marion Kuhlmann FEL Seminar

Marion Kuhlmann FEL Seminar 05.April 2016

GMD

Standard gas change in 6 min.

Larger wavelengths regions to cover.

Automatic error handling.

Page 5: Report on FLASH2 Photon Beam Diagnostics...2016/03/08  · FLASH2 Photon Beam Divergence FL2 8.27 nm (9.3µJ) FL2 82,74 nm (100µJ) FL1 4,2 nm FL1 25,8 nm Marion Kuhlmann FEL Seminar

Marion Kuhlmann FEL Seminar 05.April 2016

FLASH2: OPIS

Markus Braune

Page 6: Report on FLASH2 Photon Beam Diagnostics...2016/03/08  · FLASH2 Photon Beam Divergence FL2 8.27 nm (9.3µJ) FL2 82,74 nm (100µJ) FL1 4,2 nm FL1 25,8 nm Marion Kuhlmann FEL Seminar

Marion Kuhlmann FEL Seminar 05.April 2016

FLASH2 Photon Beam Divergence

(insufficient statistics!)

Page 7: Report on FLASH2 Photon Beam Diagnostics...2016/03/08  · FLASH2 Photon Beam Divergence FL2 8.27 nm (9.3µJ) FL2 82,74 nm (100µJ) FL1 4,2 nm FL1 25,8 nm Marion Kuhlmann FEL Seminar

Marion Kuhlmann FEL Seminar 05.April 2016

FLASH2 Photon Beam Divergence

FL2 8.27 nm (9.3µJ) FL2 82,74 nm (100µJ) FL1 4,2 nm FL1 25,8 nm

Page 8: Report on FLASH2 Photon Beam Diagnostics...2016/03/08  · FLASH2 Photon Beam Divergence FL2 8.27 nm (9.3µJ) FL2 82,74 nm (100µJ) FL1 4,2 nm FL1 25,8 nm Marion Kuhlmann FEL Seminar

Marion Kuhlmann FEL Seminar 05.April 2016

FLASH2 Experimental Hall

Grating Spectrometer FL22

First Experiments FL24

Page 9: Report on FLASH2 Photon Beam Diagnostics...2016/03/08  · FLASH2 Photon Beam Divergence FL2 8.27 nm (9.3µJ) FL2 82,74 nm (100µJ) FL1 4,2 nm FL1 25,8 nm Marion Kuhlmann FEL Seminar

Marion Kuhlmann FEL Seminar 05.April 2016

Grating Spectrometer: Concept and Design

fixed 1mm

3 different

svls blazed

gratings

movable fine slits

camera position

translates into

wavelength

different image positions

for different gratings

FEL

mirror

1st order 2nd order

0th order

grating

(top view)

Page 10: Report on FLASH2 Photon Beam Diagnostics...2016/03/08  · FLASH2 Photon Beam Divergence FL2 8.27 nm (9.3µJ) FL2 82,74 nm (100µJ) FL1 4,2 nm FL1 25,8 nm Marion Kuhlmann FEL Seminar

Marion Kuhlmann FEL Seminar 05.April 2016

Grating Spectrometer:

Page 11: Report on FLASH2 Photon Beam Diagnostics...2016/03/08  · FLASH2 Photon Beam Divergence FL2 8.27 nm (9.3µJ) FL2 82,74 nm (100µJ) FL1 4,2 nm FL1 25,8 nm Marion Kuhlmann FEL Seminar

Marion Kuhlmann FEL Seminar 05.April 2016

Grating Spectrometer: jddd path

Exp hall

FL22

Spectrometer

Page 12: Report on FLASH2 Photon Beam Diagnostics...2016/03/08  · FLASH2 Photon Beam Divergence FL2 8.27 nm (9.3µJ) FL2 82,74 nm (100µJ) FL1 4,2 nm FL1 25,8 nm Marion Kuhlmann FEL Seminar

Marion Kuhlmann FEL Seminar 05.April 2016

Grating Spectrometer: Higher Orders

Samples of narrow profiles 1st grating order 5th grating order

1st

5th

center wavelength standard deviation: 0.08nm

average fwhm of single gaussian fits: 0.42nm

Page 13: Report on FLASH2 Photon Beam Diagnostics...2016/03/08  · FLASH2 Photon Beam Divergence FL2 8.27 nm (9.3µJ) FL2 82,74 nm (100µJ) FL1 4,2 nm FL1 25,8 nm Marion Kuhlmann FEL Seminar

Marion Kuhlmann FEL Seminar 05.April 2016

Grating Spectrometer:

(not normalizised)

narrow profiles of 5th grating order

20s single bunch 10Hz at 10nm setting.

Page 14: Report on FLASH2 Photon Beam Diagnostics...2016/03/08  · FLASH2 Photon Beam Divergence FL2 8.27 nm (9.3µJ) FL2 82,74 nm (100µJ) FL1 4,2 nm FL1 25,8 nm Marion Kuhlmann FEL Seminar

Marion Kuhlmann FEL Seminar 05.April 2016

Grating Spectrometer: Resolution l/Dl

1st order grating (measured)

measured 5th order

1st order design theoretical

Page 15: Report on FLASH2 Photon Beam Diagnostics...2016/03/08  · FLASH2 Photon Beam Divergence FL2 8.27 nm (9.3µJ) FL2 82,74 nm (100µJ) FL1 4,2 nm FL1 25,8 nm Marion Kuhlmann FEL Seminar

Marion Kuhlmann FEL Seminar 05.April 2016

Grating Spectrometer: Possible Fudge Factor

line fit at 1.96%

(insufficient statistics!)

Page 16: Report on FLASH2 Photon Beam Diagnostics...2016/03/08  · FLASH2 Photon Beam Divergence FL2 8.27 nm (9.3µJ) FL2 82,74 nm (100µJ) FL1 4,2 nm FL1 25,8 nm Marion Kuhlmann FEL Seminar

Marion Kuhlmann FEL Seminar 05.April 2016

Grating Spectrometer: jddd Operation

Page 17: Report on FLASH2 Photon Beam Diagnostics...2016/03/08  · FLASH2 Photon Beam Divergence FL2 8.27 nm (9.3µJ) FL2 82,74 nm (100µJ) FL1 4,2 nm FL1 25,8 nm Marion Kuhlmann FEL Seminar

Marion Kuhlmann FEL Seminar 05.April 2016

Grating Spectrometer: Spectrum Viewer

Page 18: Report on FLASH2 Photon Beam Diagnostics...2016/03/08  · FLASH2 Photon Beam Divergence FL2 8.27 nm (9.3µJ) FL2 82,74 nm (100µJ) FL1 4,2 nm FL1 25,8 nm Marion Kuhlmann FEL Seminar

Marion Kuhlmann FEL Seminar 05.April 2016

Grating Spectrometer:

Grating Spectrometer: (34,5h in 7d)

• Tool is in place at FL22 and aligned.

• Operation for Grating 3 [11-62nm] is set up.

Operation of Grating 1+2 [1-5nm+5-20nm] requires l<7nm.

Solve problems with FL20M3.

Wavelength change by operators.

Spectrum viewer full operation and grating change by operators.

DAQ operation on demand.

Comparison shot to shot with OPIS.

High mJ operation.

Encoder for translation movements.

Change to camera objective as in the original design.

Build in FL21M1

Page 19: Report on FLASH2 Photon Beam Diagnostics...2016/03/08  · FLASH2 Photon Beam Divergence FL2 8.27 nm (9.3µJ) FL2 82,74 nm (100µJ) FL1 4,2 nm FL1 25,8 nm Marion Kuhlmann FEL Seminar

Marion Kuhlmann FEL Seminar 05.April 2016

What is next on the list of FLASH2 Photondiagnostics

User Run Treusch, Duesterer, Toleikis, Braune, Kuhlmann

Brachmanski, Grunewald, Müller,

More Beamline Setup and Alignment Treusch, Duesterer, Kuhlmann, Brachmanski,

Grunewald, Müller, Bican, Toleikis, Weigelt

FS-BT Degenhardt, Steffen, Hans,

More Grating Spectrometer Kuhlmann, Grunewald, Kreis,

More OPIS Braune, Jastrow, Grunewald,

Setup GMD H and Attenuator Jastrow, Tiedtke, Degenhardt, Bican,

First Wavefront Measurements Keitel, Plönjes, Kuhlmann,

GMD at Experiment Tiedtke, Jastrow, Sorokin, Bican, Bonfigt,

Compact Spectrometer Dziarzhytski,

Preparation Pulselengths Diagnostics Ivanov, Duesterer,


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