IBIC2021 - List of Authors (Gerth, C.)

Paper	Title	Page
WEPP14	Bunch Compression Monitor Based on Coherent Diffraction Radiation at European XFEL and FLASH	400
	C. Gerth, N.M. Lockmann DESY, Hamburg, Germany
	Bunch compression monitors (BCMs) based on the detection of coherent diffraction radiation have been installed at the European XFEL for a beam-based stabilisation of the accelerating phases as well as monitoring of bunch lengths. The monitor systems comprise zero-bias Schottky and pyro-electric detectors in combination with low and high pass filters. The detector responses and filters are matched to the spectral ranges of the coherent part of the emitted diffraction radiation which is given by the particular beam energy and bunch lengths after each bunch compression stage. In this paper, we describe in detail the experimental setup of the BCMs. The last BCM has been calibrated with the help of a transverse deflecting structure to establish a (rms) bunch length monitor in the range of a few tens of femtoseconds, and results from compression scans are presented. To enable operation at megahertz repetition rates of the superconducting accelerator, a correction method for the signal pileup of the pyro-electric detectors has been applied. Installation of the same BCMs is foreseen at FLASH within the FLASH²⁰²⁰⁺ upgrade project.
	Poster WEPP14 [1.387 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2021-WEPP14
About •	paper received ※ 07 September 2021 paper accepted ※ 27 September 2021 issue date ※ 12 October 2021
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

Bunch Compression Monitor Based on Coherent Diffraction Radiation at European XFEL and FLASH

400

C. Gerth, N.M. Lockmann
DESY, Hamburg, Germany

Bunch compression monitors (BCMs) based on the detection of coherent diffraction radiation have been installed at the European XFEL for a beam-based stabilisation of the accelerating phases as well as monitoring of bunch lengths. The monitor systems comprise zero-bias Schottky and pyro-electric detectors in combination with low and high pass filters. The detector responses and filters are matched to the spectral ranges of the coherent part of the emitted diffraction radiation which is given by the particular beam energy and bunch lengths after each bunch compression stage. In this paper, we describe in detail the experimental setup of the BCMs. The last BCM has been calibrated with the help of a transverse deflecting structure to establish a (rms) bunch length monitor in the range of a few tens of femtoseconds, and results from compression scans are presented. To enable operation at megahertz repetition rates of the superconducting accelerator, a correction method for the signal pileup of the pyro-electric detectors has been applied. Installation of the same BCMs is foreseen at FLASH within the FLASH²⁰²⁰⁺ upgrade project.

Poster WEPP14 [1.387 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2021-WEPP14

About •

paper received ※ 07 September 2021 paper accepted ※ 27 September 2021 issue date ※ 12 October 2021

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)