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2nd Meeting on Future XFEL Optics

"Damage threshold of mirrors and multilayers"

Date: 23. - 24. November 2006
Location: Institute of Physis, Czech Academy of Science, Prague
Organisers: K. Tiedtke, H. Wabnitz

X-ray optics at the European XFEL will have to fulfil extreme requirements in terms of figure and roughness errors, wavefront preservation, and stability. Furthermore, the particular properties of the European XFEL with up to 3000 pulses in a period of 0.6ms and a peak power of the individual pulses in the GW range request a high long-term stability of optical elements. The influence of the ultra-short and intense X-Ray radiation pulses may damage due to ablation processes or thermal fatigue or at least degrade the optical properties of coatings and substrates.

In order to start a research and development program for XFEL optics a workshop series has been initiated by H. Wabnitz and K. Tiedtke (DESY). This series provides amongst other the possibility to review current state of the art technologies, to define development projects and experimental campaigns, and to discuss further steps to develop beam transport and focusing optics fulfilling the extreme requirements of the XFEL."

Scientific Program

Time

Speaker

Title

Thursday, 23. Nov

   

9:00

K. Tiedtke/H. Wabnitz

Objectives of Meeting

9:20

F. Siewert

0.05 ┬Árad Accuracy Metrology for the Inspection of FEL-Optics

9:50

R. Sobierajski

FLASH-induced damage to various optical materials

10:20

L. Juha

Influence of Pulse Energy and Duration, Wavelength and Incidence Angle on XUV/X-ray Damage Phenomena

10:50

 

Coffee Break

11:10

 

Open discussion

13:00

 

Lunch Break

14:00

A. Gleeson

4GLS Interests in Optics

14:20

M. Yabashi

Current Status of Development of XFEL Optics in Japan

14:40

J. Chalupsky

PMMA-Ablation for Characterization of focused XUV radiation beams

15:00

F. Bijkerk

Multilayer Fabrication at FOM

15:20

B. Ziaja

Theoretical Approach to estimate Damage in FEL irradiated Samples

15:50

 

Coffee Break

16:10

 

Final discussion with resume

Thursday, 24. Nov

   

9:00

 

Visit of Prague Asterix Laser System (PALS)

 

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