IPAC2016 - List of Authors (Boland, M.J.)

Paper	Title	Page
MOPMR054	Double-slit Interferometer Measurements at SPEAR3	368
	C.L. Li, W.J. Zhang East China University of Science and Technology, Shanghai, People's Republic of China M.J. Boland SLSA, Clayton, Australia W.J. Corbett, M. Grinberg SLAC, Menlo Park, California, USA T.M. Mitsuhashi KEK, Ibaraki, Japan Y.H. Xu DongHua University, Songjiang, People's Republic of China W.J. Zhang University of Saskatchewan, Saskatoon, Canada
	The resolution of a conventional telescope used to image visible-light synchrotron radiation is often limited by diffraction effects. To improve resolution, the double-slit interferometer method was developed at KEK and has since become popular around the world. Based on the Van Cittert-Zernike theorem relating transverse source profile to transverse spatial coherence, the particle beam size can be inferred by recording fringe contrast as a function of interferometer slit separation. In this paper, we describe the SPEAR3 double-slit interferometer, develop a theoretical framework for the interferometer and provide experimental results. Of note the double-slit system is 'rotated' about the beam axis to map the dependence of photon beam coherence on angle.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-MOPMR054
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MOPOW003	RF Phase Jitter Consideration in Bunch Compression	704
	T.K. Charles, D.M. Paganin Monash University, Faculty of Science, Clayton, Victoria, Australia M.J. Boland, R.T. Dowd SLSA, Clayton, Australia
	Error propagation of RF phase jitter is analysed for various linac layout configurations and the sensitivity of the compression ratio due to RF phase jitter is analysed. Multiple sources of jitter have the opportunity to destructively interfere, and (perhaps counter intuitively) found to not add in quadrature. Results are compared to Elegant simulations.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-MOPOW003
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MOPOW004	Electron Trajectory Caustic Formation Resulting in Current Horns present in Bunch Compression	708
	T.K. Charles, D.M. Paganin Monash University, Faculty of Science, Clayton, Victoria, Australia M.J. Boland, R.T. Dowd SLSA, Clayton, Australia
	Current horns are ubiquitous in Free Electron Laser (FEL) bunch compression. In this paper, we analyse the formation of these current spikes and identify the cause as caustic formation in the electron trajectories. We also present a possible solution to avoid or mitigate the current horns from developing through using optical linearization.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-MOPOW004
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TUPOR023	Investigation of Trapped Resonant Modes in Insertion Devices at the Australian Synchrotron	1710
	R.T. Dowd, M.P. Atkinson, M.J. Boland, G. LeBlanc, Y.E. Tan SLSA, Clayton, Australia D. Teytelman Dimtel, San Jose, USA
	The Australian Synchrotron light Source has 3 variable gap in-vacuum undulators (IVU) in the storage ring. Since installation, these devices have been the source of strong beam instabilities. These instabilities seem to behave as trapped resonant modes of very high Q and high frequency, although a definite source has not been identified. The presence of these instabilities has necessitated operating at unusually high chromaticity for much of the light source's operations. More recently transverse feedback has been able to control the instabilities and recent developments in diagnostics have allowed some investigation of the frequency and mode response of these resonances. The results of this investigation will be presented in this paper.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-TUPOR023
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TUPOW055	Coronagraph Measurements on the Australian Synchrotron Storage Ring Optical Diagnostic Beamline	1895
	M.J. Boland, Y.E. Tan SLSA, Clayton, Australia T.M. Mitsuhashi KEK, Ibaraki, Japan
	A coronagraph was constructed on the Optical Diagnostic Beamline at the Australian Synchrotron to observe the tails of the stored beam and the injected beam on the first few turns. Some results are presented with special emphasis on the limitation of the dynamic range due to the quality of the synchrotron light extraction mirror.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-TUPOW055
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Paper

Title

Page

Double-slit Interferometer Measurements at SPEAR3

368

C.L. Li, W.J. Zhang
East China University of Science and Technology, Shanghai, People's Republic of China
M.J. Boland
SLSA, Clayton, Australia
W.J. Corbett, M. Grinberg
SLAC, Menlo Park, California, USA
T.M. Mitsuhashi
KEK, Ibaraki, Japan
Y.H. Xu
DongHua University, Songjiang, People's Republic of China
W.J. Zhang
University of Saskatchewan, Saskatoon, Canada

The resolution of a conventional telescope used to image visible-light synchrotron radiation is often limited by diffraction effects. To improve resolution, the double-slit interferometer method was developed at KEK and has since become popular around the world. Based on the Van Cittert-Zernike theorem relating transverse source profile to transverse spatial coherence, the particle beam size can be inferred by recording fringe contrast as a function of interferometer slit separation. In this paper, we describe the SPEAR3 double-slit interferometer, develop a theoretical framework for the interferometer and provide experimental results. Of note the double-slit system is 'rotated' about the beam axis to map the dependence of photon beam coherence on angle.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-MOPMR054

Export •

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

MOPOW003

RF Phase Jitter Consideration in Bunch Compression

704

T.K. Charles, D.M. Paganin
Monash University, Faculty of Science, Clayton, Victoria, Australia
M.J. Boland, R.T. Dowd
SLSA, Clayton, Australia

Error propagation of RF phase jitter is analysed for various linac layout configurations and the sensitivity of the compression ratio due to RF phase jitter is analysed. Multiple sources of jitter have the opportunity to destructively interfere, and (perhaps counter intuitively) found to not add in quadrature. Results are compared to Elegant simulations.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-MOPOW003

Export •

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

MOPOW004

Electron Trajectory Caustic Formation Resulting in Current Horns present in Bunch Compression

708

T.K. Charles, D.M. Paganin
Monash University, Faculty of Science, Clayton, Victoria, Australia
M.J. Boland, R.T. Dowd
SLSA, Clayton, Australia

Current horns are ubiquitous in Free Electron Laser (FEL) bunch compression. In this paper, we analyse the formation of these current spikes and identify the cause as caustic formation in the electron trajectories. We also present a possible solution to avoid or mitigate the current horns from developing through using optical linearization.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-MOPOW004

Export •

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

TUPOR023

Investigation of Trapped Resonant Modes in Insertion Devices at the Australian Synchrotron

1710

R.T. Dowd, M.P. Atkinson, M.J. Boland, G. LeBlanc, Y.E. Tan
SLSA, Clayton, Australia
D. Teytelman
Dimtel, San Jose, USA

The Australian Synchrotron light Source has 3 variable gap in-vacuum undulators (IVU) in the storage ring. Since installation, these devices have been the source of strong beam instabilities. These instabilities seem to behave as trapped resonant modes of very high Q and high frequency, although a definite source has not been identified. The presence of these instabilities has necessitated operating at unusually high chromaticity for much of the light source's operations. More recently transverse feedback has been able to control the instabilities and recent developments in diagnostics have allowed some investigation of the frequency and mode response of these resonances. The results of this investigation will be presented in this paper.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-TUPOR023

Export •

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

TUPOW055

Coronagraph Measurements on the Australian Synchrotron Storage Ring Optical Diagnostic Beamline

1895

M.J. Boland, Y.E. Tan
SLSA, Clayton, Australia
T.M. Mitsuhashi
KEK, Ibaraki, Japan

A coronagraph was constructed on the Optical Diagnostic Beamline at the Australian Synchrotron to observe the tails of the stored beam and the injected beam on the first few turns. Some results are presented with special emphasis on the limitation of the dynamic range due to the quality of the synchrotron light extraction mirror.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-TUPOW055

Export •

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