IBIC2015 - List of Authors (Gensch, M.)

Paper	Title	Page
MOCLA03	Fully Intensity and Timing Jitter Compensated Ultra-Fast Experiments at Accelerator-Driven Photonsources at High Repetition Rates
	S. Kovalev, M. Gensch, B.W. Green HZDR, Dresden, Germany A.S. Fisher SLAC, Menlo Park, California, USA T. Golz, N. Stojanovic DESY, Hamburg, Germany T. Kampfrath FHI, Berlin, Germany
	Funding: European Union through project EUCALL Timing jitter and power instabilities are crucial parameters which greatly reduce the applicability of accelerator driven light sources for time-resolved experiments. In this contribution we present a technique that allows achieving few 10 fs time-resolution in experiments operating at cw repetition rates of up to 100 kHz by employing high repetition rate data acquisition. The method employs a fs-level arrival time monitor based on electro-optic sampling* of residual pulses from a coherent diffraction radiator and a fast THz detector allowing for pulse to pulse detection of arrival time and pump intensity. The monitor can operate at high repetition rates cw (presently up to a few 100 kHz) and low electron bunch charges (sub pC). The prototype device has been tested at the quasi CW SRF accelerator (ELBE) by performing an ultra-fast THz driven magnetization dynamics experiment. Our method has high potential to provide few fs level timing on next generation large scale X-ray photon sources based on high repetition rate electron accelerators such as LCLSII. A demonstrator aiming at operation up to 4.7 MHz is under development for the European X-FEL. Z. Jiang, X. C. Zhang, IEEE Journal of Quantum Electronics, 36, 1214, 2000 I. Wilke et al., Phys. Rev. Lett., 88, 124801, 2002. * S. Kovalev et. al., under review (2015).
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MOPB009	Jitter Analysis at CW Repetition Rate With Large Spectral Range and High Resolution	43
	M. Kuntzsch, M. Gensch, U. Lehnert, P. Michel, R. Schurig, J. Teichert HZDR, Dresden, Germany
	At the superconducting CW accelerator ELBE electron bunch diagnostics has been installed recently, enabling the investigation of bunch arrival-time jitter and electron energy fluctuations for varying bunch compression states. Using these diagnostic systems, a comprehensive investigation has been performed that reveals the influence of the bunch compression to spectral noise components up to a frequency of 100 kHz (i.e. 200 kHz bunch repetition rate). The transformation of arrival-time jitter into energy jitter and vice versa can be observed. The perfomances of a DC thermionic and a SRF photoinjector at the CW- SRF Linac ELBE are compared and an interpretation for different noise components is presented.
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Paper

Title

Page

MOCLA03

Fully Intensity and Timing Jitter Compensated Ultra-Fast Experiments at Accelerator-Driven Photonsources at High Repetition Rates

S. Kovalev, M. Gensch, B.W. Green
HZDR, Dresden, Germany
A.S. Fisher
SLAC, Menlo Park, California, USA
T. Golz, N. Stojanovic
DESY, Hamburg, Germany
T. Kampfrath
FHI, Berlin, Germany

Funding: European Union through project EUCALL
Timing jitter and power instabilities are crucial parameters which greatly reduce the applicability of accelerator driven light sources for time-resolved experiments. In this contribution we present a technique that allows achieving few 10 fs time-resolution in experiments operating at cw repetition rates of up to 100 kHz by employing high repetition rate data acquisition. The method employs a fs-level arrival time monitor based on electro-optic sampling* ** of residual pulses from a coherent diffraction radiator and a fast THz detector allowing for pulse to pulse detection of arrival time and pump intensity. The monitor can operate at high repetition rates cw (presently up to a few 100 kHz) and low electron bunch charges (sub pC). The prototype device has been tested at the quasi CW SRF accelerator (ELBE) by performing an ultra-fast THz driven magnetization dynamics experiment***. Our method has high potential to provide few fs level timing on next generation large scale X-ray photon sources based on high repetition rate electron accelerators such as LCLSII. A demonstrator aiming at operation up to 4.7 MHz is under development for the European X-FEL.
* Z. Jiang, X. C. Zhang, IEEE Journal of Quantum Electronics, 36, 1214, 2000
** I. Wilke et al., Phys. Rev. Lett., 88, 124801, 2002.
*** S. Kovalev et. al., under review (2015).

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MOPB009

Jitter Analysis at CW Repetition Rate With Large Spectral Range and High Resolution

43

M. Kuntzsch, M. Gensch, U. Lehnert, P. Michel, R. Schurig, J. Teichert
HZDR, Dresden, Germany

At the superconducting CW accelerator ELBE electron bunch diagnostics has been installed recently, enabling the investigation of bunch arrival-time jitter and electron energy fluctuations for varying bunch compression states. Using these diagnostic systems, a comprehensive investigation has been performed that reveals the influence of the bunch compression to spectral noise components up to a frequency of 100 kHz (i.e. 200 kHz bunch repetition rate). The transformation of arrival-time jitter into energy jitter and vice versa can be observed. The perfomances of a DC thermionic and a SRF photoinjector at the CW- SRF Linac ELBE are compared and an interpretation for different noise components is presented.

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reference for this paper to ※ BibTeX, ※ LaTeX, ※ Text, ※ RIS/RefMan, ※ EndNote (xml)