IBIC2022 - List of Keywords (timing)

Paper	Title	Other Keywords	Page
MOP16	Time Resolved Dynamics of Transverse Resonance Island Buckets at SPEAR3	kicker, experiment, resonance, lattice	62
	K. Tian, W.J. Corbett, J. Kim, J.A. Safranek SLAC, Menlo Park, California, USA
	The Transverse Resonance Island Buckets have been studied at SPEAR3 as an option for timing experiment mode operation of this third generation synchrotron radiation facility. In this mode, with proper optics setting, the electron beam is populated to island orbits with the excitation from a kicker. In this paper, we will report the experimental observation of the beam dynamics with turn by turn beam position monitors and a fast gated camera. The results are also compared with tracking simulations.
DOI •	reference for this paper ※ doi:10.18429/JACoW-IBIC2022-MOP16
About •	Received ※ 07 September 2022 — Revised ※ 09 September 2022 — Accepted ※ 11 September 2022 — Issue date ※ 22 September 2022
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

MOP40	Synchronous Data Service at the European Spallation Source	EPICS, controls, interface, software	148
	R. Titmarsh STFC/RAL/ISIS, Chilton, Didcot, Oxon, United Kingdom J.F. Esteban Müller, J.P.S. Martins ESS, Lund, Sweden
	The Synchronous Data Service (SDS) is a tool to monitor and capture events in the European Spallation Source, building on top of the EPICS control system. Large amounts of data from different input output controllers are acquired and synchronised at the level of beam pulses. The acquisition can be triggered by beam events though the timing system or manually by a user. Captured data is stored in standardised NeXus files and indexed in a database for easy searching and retrieval.
DOI •	reference for this paper ※ doi:10.18429/JACoW-IBIC2022-MOP40
About •	Received ※ 07 September 2022 — Revised ※ 09 September 2022 — Accepted ※ 12 September 2022 — Issue date ※ 12 October 2022
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUP23	Commissioning of the Timing System at ESS	MMI, controls, MEBT, ion-source	281
	N. Milas, G.S. Fedel, A.A. Gorzawski, J.J. Jamróz, J.P.S. Martins ESS, Lund, Sweden
	The European Spallation Source (ESS), currently under construction and initial commissioning in Lund, Sweden, will be the brightest spallation neutron source in the world, when its driving proton linac achieves the design power of 5 MW at 2 GeV. Such a high power requires production, efficient acceleration, and almost no-loss transport of a high current beam, thus making design and beam commissioning of this machine challenging. The commissioning runs of 2021 and early 2022 were the first where the master timing system for the linac was fully available. As a consequence of that, the beam actuators and beam monitoring equipment relied fully on timing events sent accross the machine, not only to be triggered to act but also to get the configuration. In this paper, we describe the timing system as available today, present how we define and create the beam pulses using the available parameters. We also present planned future upgrades and other outlook for the system.
DOI •	reference for this paper ※ doi:10.18429/JACoW-IBIC2022-TUP23
About •	Received ※ 07 September 2022 — Revised ※ 10 September 2022 — Accepted ※ 13 September 2022 — Issue date ※ 12 October 2022
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEP24	Modeling and Experimental Evaluation of a Bunch Arrival-Time Monitor with Rod-Shaped Pickups and a Low-Pi-Voltage Ultra-Wideband Traveling Wave Electro-Optic Modulator for X-Ray Free-Electron Lasers	laser, pick-up, electron, GUI	447
	K. Kuzmin, E. Bründermann, A.-S. Müller, G. Niehues KIT, Karlsruhe, Germany W. Ackermann, H. De Gersem TEMF, TU Darmstadt, Darmstadt, Germany M.K. Czwalinna, H. Schlarb DESY, Hamburg, Germany C. Eschenbaum, C. Koos, A. Kotz, A. Schwarzenberger IPQ KIT, Karlsruhe, Germany A. Penirschke, B.E.J. Scheible THM, Friedberg, Germany
	X-ray Free-Electron Laser (XFEL) facilities, such as the 3.4-km European XFEL, use all-optical links with electro-optic bunch arrival-time monitors (BAM) for a long-range synchronization. The current BAM systems achieve a resolution of 3.5 fs for 250 pC bunches. Precise bunch arrival timing is essential for experiments, which study ultra-fast dynamical phenomena with highest temporal resolution. These experiments will crucially rely on femtosecond pulses from bunch charges well below 20 pC. The state-of-the-art BAMs are not allowing accurate timing for operation with such low bunch charges. Here we report on the progress in development of an advanced BAM (system) based on rod-shaped pickups mounted on a printed circuit board and ultra-wideband travelling-wave electro-optic modulators with low operating voltages. We perform modeling and experimental evaluation for the fabricated pickups and electro-optic modulators and analytically estimate timing jitter for the advanced BAM system. We discuss an experimental setup to demonstrate joint operation of new pickups and wideband EO modulators for low bunch charges less than 5 pC.
DOI •	reference for this paper ※ doi:10.18429/JACoW-IBIC2022-WEP24
About •	Received ※ 07 September 2022 — Revised ※ 10 September 2022 — Accepted ※ 12 September 2022 — Issue date ※ 13 October 2022
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEP25	Installation and Commissioning of the Pulsed Optical Timing System Extension	controls, detector, polarization, laser	451
	F. Rossi, M. Ferianis Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy
	At the FERMI FEL user facility, a fully optical timing system has been operated, to synchronize it, since the start of machine commissioning, back in 2009. In the past years the system has been progressively extended to support more clients. The latest upgrade is focusing on the pulsed subsystem which provides the phase reference to remote lasers and the bunch arrival monitor diagnostic stations. In origin the pulsed subsystem had a capacity to feed simultaneously six stabilized fiber links. The upgrade to the original layout makes it possible to install up to eight new additional links. Here we will describe the new setup and the results achieved in terms of short- and long-term stability.
	Poster WEP25 [3.843 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-IBIC2022-WEP25
About •	Received ※ 07 September 2022 — Revised ※ 10 September 2022 — Accepted ※ 12 September 2022 — Issue date ※ 08 November 2022
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Other Keywords

Page

MOP16

Time Resolved Dynamics of Transverse Resonance Island Buckets at SPEAR3

kicker, experiment, resonance, lattice

62

K. Tian, W.J. Corbett, J. Kim, J.A. Safranek
SLAC, Menlo Park, California, USA

The Transverse Resonance Island Buckets have been studied at SPEAR3 as an option for timing experiment mode operation of this third generation synchrotron radiation facility. In this mode, with proper optics setting, the electron beam is populated to island orbits with the excitation from a kicker. In this paper, we will report the experimental observation of the beam dynamics with turn by turn beam position monitors and a fast gated camera. The results are also compared with tracking simulations.

DOI •

reference for this paper ※ doi:10.18429/JACoW-IBIC2022-MOP16

About •

Received ※ 07 September 2022 — Revised ※ 09 September 2022 — Accepted ※ 11 September 2022 — Issue date ※ 22 September 2022

Cite •

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

MOP40

Synchronous Data Service at the European Spallation Source

EPICS, controls, interface, software

148

R. Titmarsh
STFC/RAL/ISIS, Chilton, Didcot, Oxon, United Kingdom
J.F. Esteban Müller, J.P.S. Martins
ESS, Lund, Sweden

The Synchronous Data Service (SDS) is a tool to monitor and capture events in the European Spallation Source, building on top of the EPICS control system. Large amounts of data from different input output controllers are acquired and synchronised at the level of beam pulses. The acquisition can be triggered by beam events though the timing system or manually by a user. Captured data is stored in standardised NeXus files and indexed in a database for easy searching and retrieval.

DOI •

reference for this paper ※ doi:10.18429/JACoW-IBIC2022-MOP40

About •

Received ※ 07 September 2022 — Revised ※ 09 September 2022 — Accepted ※ 12 September 2022 — Issue date ※ 12 October 2022

Cite •

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

TUP23

Commissioning of the Timing System at ESS

MMI, controls, MEBT, ion-source

281

N. Milas, G.S. Fedel, A.A. Gorzawski, J.J. Jamróz, J.P.S. Martins
ESS, Lund, Sweden

The European Spallation Source (ESS), currently under construction and initial commissioning in Lund, Sweden, will be the brightest spallation neutron source in the world, when its driving proton linac achieves the design power of 5 MW at 2 GeV. Such a high power requires production, efficient acceleration, and almost no-loss transport of a high current beam, thus making design and beam commissioning of this machine challenging. The commissioning runs of 2021 and early 2022 were the first where the master timing system for the linac was fully available. As a consequence of that, the beam actuators and beam monitoring equipment relied fully on timing events sent accross the machine, not only to be triggered to act but also to get the configuration. In this paper, we describe the timing system as available today, present how we define and create the beam pulses using the available parameters. We also present planned future upgrades and other outlook for the system.

DOI •

reference for this paper ※ doi:10.18429/JACoW-IBIC2022-TUP23

About •

Received ※ 07 September 2022 — Revised ※ 10 September 2022 — Accepted ※ 13 September 2022 — Issue date ※ 12 October 2022

Cite •

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

WEP24

Modeling and Experimental Evaluation of a Bunch Arrival-Time Monitor with Rod-Shaped Pickups and a Low-Pi-Voltage Ultra-Wideband Traveling Wave Electro-Optic Modulator for X-Ray Free-Electron Lasers

laser, pick-up, electron, GUI

447

K. Kuzmin, E. Bründermann, A.-S. Müller, G. Niehues
KIT, Karlsruhe, Germany
W. Ackermann, H. De Gersem
TEMF, TU Darmstadt, Darmstadt, Germany
M.K. Czwalinna, H. Schlarb
DESY, Hamburg, Germany
C. Eschenbaum, C. Koos, A. Kotz, A. Schwarzenberger
IPQ KIT, Karlsruhe, Germany
A. Penirschke, B.E.J. Scheible
THM, Friedberg, Germany

X-ray Free-Electron Laser (XFEL) facilities, such as the 3.4-km European XFEL, use all-optical links with electro-optic bunch arrival-time monitors (BAM) for a long-range synchronization. The current BAM systems achieve a resolution of 3.5 fs for 250 pC bunches. Precise bunch arrival timing is essential for experiments, which study ultra-fast dynamical phenomena with highest temporal resolution. These experiments will crucially rely on femtosecond pulses from bunch charges well below 20 pC. The state-of-the-art BAMs are not allowing accurate timing for operation with such low bunch charges. Here we report on the progress in development of an advanced BAM (system) based on rod-shaped pickups mounted on a printed circuit board and ultra-wideband travelling-wave electro-optic modulators with low operating voltages. We perform modeling and experimental evaluation for the fabricated pickups and electro-optic modulators and analytically estimate timing jitter for the advanced BAM system. We discuss an experimental setup to demonstrate joint operation of new pickups and wideband EO modulators for low bunch charges less than 5 pC.

DOI •

reference for this paper ※ doi:10.18429/JACoW-IBIC2022-WEP24

About •

Received ※ 07 September 2022 — Revised ※ 10 September 2022 — Accepted ※ 12 September 2022 — Issue date ※ 13 October 2022

Cite •

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

WEP25

Installation and Commissioning of the Pulsed Optical Timing System Extension

controls, detector, polarization, laser

451

F. Rossi, M. Ferianis
Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy

At the FERMI FEL user facility, a fully optical timing system has been operated, to synchronize it, since the start of machine commissioning, back in 2009. In the past years the system has been progressively extended to support more clients. The latest upgrade is focusing on the pulsed subsystem which provides the phase reference to remote lasers and the bunch arrival monitor diagnostic stations. In origin the pulsed subsystem had a capacity to feed simultaneously six stabilized fiber links. The upgrade to the original layout makes it possible to install up to eight new additional links. Here we will describe the new setup and the results achieved in terms of short- and long-term stability.

Poster WEP25 [3.843 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-IBIC2022-WEP25

About •

Received ※ 07 September 2022 — Revised ※ 10 September 2022 — Accepted ※ 12 September 2022 — Issue date ※ 08 November 2022

Cite •

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