IPAC2014 - List of Authors (Vogt, M.)

Paper	Title	Page
TUOCA02	Status of the Free Electron Laser User Facility FLASH	938
	M. Vogt, B. Faatz, J. Feldhaus, K. Honkavaara, S. Schreiber, R. Treusch DESY, Hamburg, Germany
	FLASH, the Free Electron Laser User Facility at DESY (Hamburg, Germany), delivers high brilliance XUV and soft X-ray FEL radiation to photon experiments. After a shutdown to connect the second undulator beamline FLASH2 to the FLASH linac, re-commissioning of FLASH started in autumn 2013. The year 2014 is dedicated to FLASH1 user experiments. The commissioning of the FLASH2 beamline takes place in 2014 in parallel to FLASH1 operation.
	Slides TUOCA02 [9.156 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-TUOCA02
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TUPRO050	Measurements of the Optical Functions at FLASH	1141
	J. Zemella, T. Hellert, M. Scholz, M. Vogt DESY, Hamburg, Germany
	In 2013 the superconducting soft x-ray Free Electron Laser FLASH at DESY (Hamburg, Germany) the extraction section needed to connect the 2nd beam line FLASH2 was installed. In order to allow simultaneous operation of the two beam lines (FLASH1/2), the optical functions in the extraction area needed to be modified. During the recommissioning of FLASH we have optimized, measured and corrected the optical functions in the machine. We report on the the results and the methods.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-TUPRO050
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THPRO061	New and Unifying Formalism for Study of Particle-Spin Dynamics Using Tools Distilled From Theory of Bundles	3014
	K.A. Heinemann, J.A. Ellison UNM, Albuquerque, New Mexico, USA D.P. Barber Cockcroft Institute, Warrington, Cheshire, United Kingdom D.P. Barber, M. Vogt DESY, Hamburg, Germany
	Funding: The work of JAE and KH was supported by DOE under DE-FG-99ER41104 and the work of DPB and MV was supported by DESY. We summarize our recent work on spin motion in storage rings . In fact we return to our study * of spin motion in storage rings. We again focus on spin tunes, polarization fields etc. but in contrast to ** we base the description on one turn maps and refine and expand our toolset from that in * by using a rather modern method from Dynamical-Systems theory, developed in the 1980's by R. Zimmer and others based on bundles , . With this we obtain new insights into invariant spin fields, invariant frame fields, spin tunes and spin-orbit resonances. At the same time we get a unified way to treat spin-1/2 and spin-1 particles. The bundle aspect is pointed out and we briefly mention the relation to Yang-Mills Theory as well. K.Heinemann, D.P.Barber, J.A.Ellison, M.Vogt. To be submitted. D.P.B., J.A.E., K.H., PRSTAB 7 (2004) 124002. * K.Heinemann, PhD Thesis, University of New Mexico, 2010 (available on the web).
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPRO061
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THPME116	Studies on a Diagnostic Pulse for FLASH	3506
	F. Mayet, R.W. Aßmann, S. Schreiber, M. Vogt DESY, Hamburg, Germany
	The long-term stability of the beam optics at FLASH is crucial for all connected experiments and the operation of the new second beamline FLASH2. It is therefore desirable to have a simple procedure to monitor the beam optics routinely and at the same time minimally invasive. This way user operation is not disturbed. An automated procedure, which has been successfully employed at the SLAC linac is presented in the context of FLASH. The betatron oscillations of selectively kicked pulses are recorded using BPMs at a fixed time interval. An online algorithm is then used to extract the betatron phase advance, as well as potential growth of the betatron oscillation amplitude and the Twiss parameters beta and alpha. Using this method, the long-term beam optics stability can be monitored in order to identify potential sources of drifts.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPME116
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Paper

Title

Page

Status of the Free Electron Laser User Facility FLASH

938

M. Vogt, B. Faatz, J. Feldhaus, K. Honkavaara, S. Schreiber, R. Treusch
DESY, Hamburg, Germany

FLASH, the Free Electron Laser User Facility at DESY (Hamburg, Germany), delivers high brilliance XUV and soft X-ray FEL radiation to photon experiments. After a shutdown to connect the second undulator beamline FLASH2 to the FLASH linac, re-commissioning of FLASH started in autumn 2013. The year 2014 is dedicated to FLASH1 user experiments. The commissioning of the FLASH2 beamline takes place in 2014 in parallel to FLASH1 operation.

Slides TUOCA02 [9.156 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-TUOCA02

Export •

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

TUPRO050

Measurements of the Optical Functions at FLASH

1141

J. Zemella, T. Hellert, M. Scholz, M. Vogt
DESY, Hamburg, Germany

In 2013 the superconducting soft x-ray Free Electron Laser FLASH at DESY (Hamburg, Germany) the extraction section needed to connect the 2nd beam line FLASH2 was installed. In order to allow simultaneous operation of the two beam lines (FLASH1/2), the optical functions in the extraction area needed to be modified. During the recommissioning of FLASH we have optimized, measured and corrected the optical functions in the machine. We report on the the results and the methods.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-TUPRO050

Export •

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

THPRO061

New and Unifying Formalism for Study of Particle-Spin Dynamics Using Tools Distilled From Theory of Bundles

3014

K.A. Heinemann, J.A. Ellison
UNM, Albuquerque, New Mexico, USA
D.P. Barber
Cockcroft Institute, Warrington, Cheshire, United Kingdom
D.P. Barber, M. Vogt
DESY, Hamburg, Germany

Funding: The work of JAE and KH was supported by DOE under DE-FG-99ER41104 and the work of DPB and MV was supported by DESY.
We summarize our recent work on spin motion in storage rings *. In fact we return to our study ** of spin motion in storage rings. We again focus on spin tunes, polarization fields etc. but in contrast to ** we base the description on one turn maps and refine and expand our toolset from that in * by using a rather modern method from Dynamical-Systems theory, developed in the 1980's by R. Zimmer and others based on bundles **, ***. With this we obtain new insights into invariant spin fields, invariant frame fields, spin tunes and spin-orbit resonances. At the same time we get a unified way to treat spin-1/2 and spin-1 particles. The bundle aspect is pointed out and we briefly mention the relation to Yang-Mills Theory as well.
* K.Heinemann, D.P.Barber, J.A.Ellison, M.Vogt. To be submitted.
** D.P.B., J.A.E., K.H., PRSTAB 7 (2004) 124002.
*** K.Heinemann, PhD Thesis, University of New Mexico, 2010 (available on the web).

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPRO061

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

THPME116

Studies on a Diagnostic Pulse for FLASH

3506

F. Mayet, R.W. Aßmann, S. Schreiber, M. Vogt
DESY, Hamburg, Germany

The long-term stability of the beam optics at FLASH is crucial for all connected experiments and the operation of the new second beamline FLASH2. It is therefore desirable to have a simple procedure to monitor the beam optics routinely and at the same time minimally invasive. This way user operation is not disturbed. An automated procedure, which has been successfully employed at the SLAC linac is presented in the context of FLASH. The betatron oscillations of selectively kicked pulses are recorded using BPMs at a fixed time interval. An online algorithm is then used to extract the betatron phase advance, as well as potential growth of the betatron oscillation amplitude and the Twiss parameters beta and alpha. Using this method, the long-term beam optics stability can be monitored in order to identify potential sources of drifts.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPME116

Export •

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