IBIC2017 - List of Authors (Bahlo, T.)

Paper	Title	Page
MOPCC08	Time-of-Flight Measurements and Analysis of the Longitudinal Dispersion at the S-DALINAC	57
	T. Bahlo, M. Arnold, J. Pforr, N. Pietralla, F. Schließmann TU Darmstadt, Darmstadt, Germany
	Funding: funded by DFG through RTG 2128, INST163/383-1/FUGG and INST163/384-1/FUGG The Superconducting Darmstadt Linear Accelerator S-DALINAC is capable of accelerating electrons to kinetic energies of up to 130 MeV. Due to its three recirculating beamlines the 30 MeV main linac can be used up to four times. The electron beam is recirculated non-isochronously with a distinct longitudinal dispersion to conserve the energy spread of the injector. Time-of-flight measurements at the beamline connecting injector and main linac will be presented, showing a non-linear dependency on the energy. This effect can be reproduced by simulations using elegant and are caused by traversing accelerating cavities with a small transversal displacement and a small angular deviation. Besides the first recirculation beamline does not provide enough degrees of freedom to set the desired longitudinal dispersion for the non-isochronous recirculation mode. This has to be compensated in succeeding recirculation beamlines or by installation of additional magnets at the first recirculation beamline. Possible beamline modifications and time-of-flight measurements representing the longitudinal dispersion will be presented.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2017-MOPCC08
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Paper

Title

Page

Time-of-Flight Measurements and Analysis of the Longitudinal Dispersion at the S-DALINAC

57

T. Bahlo, M. Arnold, J. Pforr, N. Pietralla, F. Schließmann
TU Darmstadt, Darmstadt, Germany

Funding: funded by DFG through RTG 2128, INST163/383-1/FUGG and INST163/384-1/FUGG
The Superconducting Darmstadt Linear Accelerator S-DALINAC is capable of accelerating electrons to kinetic energies of up to 130 MeV. Due to its three recirculating beamlines the 30 MeV main linac can be used up to four times. The electron beam is recirculated non-isochronously with a distinct longitudinal dispersion to conserve the energy spread of the injector. Time-of-flight measurements at the beamline connecting injector and main linac will be presented, showing a non-linear dependency on the energy. This effect can be reproduced by simulations using elegant and are caused by traversing accelerating cavities with a small transversal displacement and a small angular deviation. Besides the first recirculation beamline does not provide enough degrees of freedom to set the desired longitudinal dispersion for the non-isochronous recirculation mode. This has to be compensated in succeeding recirculation beamlines or by installation of additional magnets at the first recirculation beamline. Possible beamline modifications and time-of-flight measurements representing the longitudinal dispersion will be presented.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2017-MOPCC08

Export •

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