IPAC2017 - List of Keywords (survey)

Paper	Title	Other Keywords	Page
MOPVA075	Development of High Sensitive X-Ray Mapping for SC Cavities	cavity, operation, interface, cryogenics	1040
	H. Tongu, H. Hokonohara, Y. Iwashita Kyoto ICR, Uji, Kyoto, Japan R.L. Geng, A.D. Palczewski JLab, Newport News, Virginia, USA H. Hayano, T. Kubo, T. Saeki, Y. Yamamoto KEK, Ibaraki, Japan H. Oikawa Utsunomiya University, Utsunomiya, Japan
	We developed an X-ray mapping system sX-map for superconducting cavities. The sensors are inserted under the stiffener rings between cavity cells, whose locations are close to the iris areas. The whole circuits are im-mersed in liquid He and the multiplexed signals reduces the number of cables to the room temperature region. sX-map has the advantages in its compact size, low cost and simple setup for nondestructive inspections. The sX-map system detected X-rays from field emissions in vertical RF tests of ILC 9-cell cavities at Jefferson Lab (JLab) and KEK. sX-map showed an excellent performance in the meas-urement test at JLab, it exhibited a high sensitivity com-pared with an the fixed diode rings colocated at irises and ion chamber located out side of the vertical test cryostat.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-MOPVA075
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TUPIK096	Data-Driven Controller Design for High Precision Pulsed Power Converters for Bumper Magnets of the PS Booster	controls, flattop, framework, booster	1928
	A. Nicoletti, M. Martino CERN, Geneva, Switzerland
	A new data-driven approach using the frequency response function of a system is proposed for designing robust digital controllers for the injection bumper magnet (BSW) power supplies of the PS Booster. The powering of the BSW requires high precision 3.4 kA to 6.7 kA trapezoidal current pulses with 2 ms flat-top and 5 ms ramp-up and ramp-down time. The tracking error must remain within ± 50 parts-per-million (ppm) during the flat-top of the trapezoidal reference, and ± 500 ppm during the ramp-down. The BSW is powered with a four quadrant switch-mode power converter and the current through the magnet is controlled in closed-loop form with a 2-degree-of-freedom controller at a sampling rate of 10 kHz. A convex optimization algorithm is performed for obtaining the controller parameters. The effectiveness of the method is illustrated by designing the controller for a full-scale prototype of the BSW system at CERN, which is in the framework of the LHC Injector Upgrade (LIU) project.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPIK096
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TUPVA118	Particle Accelerators for Humanity: Resources for Public Engagement with Particle Accelerators	proton, quadrupole, neutron, photon	2369
	S.L. Sheehy JAI, Oxford, United Kingdom
	To those who work in the accelerator field, it is obvious that there are many applications of accelerators beyond particle physics. Yet the public remains largely unaware of the far reaching uses of accelerators, or the scientific and engineering challenges that lay behind them. A recent project Particle Accelerators for Humanity has addressed this gap by creating a series of video resources, based on a programme of live events, short films and a specially commissioned animation. The project captured the dedication and diversity of those who design, operate and work with accelerators and highlights the varied ways in which their work is impacting on our lives. Here we overview the project and the resources, available under Creative Commons license, and discuss the impact of the project so far. We encourage the accelerator community to use the resources in their teaching and public engagement activities.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPVA118
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WEPAB091	Progress on Transparent Realignment of the Diamond Storage Ring	alignment, controls, storage-ring, monitoring	2790
	M. Apollonio, R. Bartolini, W.J. Hoffman, A.J. Rose, A. Thomson DLS, Oxfordshire, United Kingdom R. Bartolini JAI, Oxford, United Kingdom
	The mechanical alignment of Diamond Storage Ring is achieved by means of a 5-axis motion system under remote control via the EPICS toolkit from the Diamond Control Room. We have completed the first phase of the realignment program meant to improve the mechanical alignment of the machine by carefully moving the magnet girders with a virtually zero impact on the associated beamlines, hence the name Transparent Realignment (TR). During this phase we have equipped and realigned 3 out of 24 cells, involving two beamlines. We have also tested and perfected the technique to execute a move with live beam and total remote control of the realignment process. The program has entered a second phase entailing the commissioning of 6 more cells. Details of tests on the machine are reported.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-WEPAB091
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THPVA069	NSC KIPT Experience in Use of Laser Tracker Leica at 401 in Equipment Alignment of 100 MeV/100 KW Electron Linear Accelerator of Neutron Source Driver	target, quadrupole, neutron, electron	4604
	M. Moisieienko, O. Bezditko, I.M. Karnaukhov, A. Mytsykov, A.Y. Zelinsky NSC/KIPT, Kharkov, Ukraine
	For successful operation of electron linear accelerator that is driver of NSC KIPT Neutron source it is necessary that all the acceleration sections and all the electromagnetic elements should be installed in design position according to the designed lattice. Accuracies of all electromagnetic elements installation are 150 mkm in transverse positions and 200 mrad for all three rotation directions. The whole process, fiducialization and developing of coordinate net, is controlled by Laser tracker Leica AT 401. Well-planned methods allow to realize uniform irradiation of neutron-generation target.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-THPVA069
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Paper

Title

Other Keywords

Page

MOPVA075

Development of High Sensitive X-Ray Mapping for SC Cavities

cavity, operation, interface, cryogenics

1040

H. Tongu, H. Hokonohara, Y. Iwashita
Kyoto ICR, Uji, Kyoto, Japan
R.L. Geng, A.D. Palczewski
JLab, Newport News, Virginia, USA
H. Hayano, T. Kubo, T. Saeki, Y. Yamamoto
KEK, Ibaraki, Japan
H. Oikawa
Utsunomiya University, Utsunomiya, Japan

We developed an X-ray mapping system sX-map for superconducting cavities. The sensors are inserted under the stiffener rings between cavity cells, whose locations are close to the iris areas. The whole circuits are im-mersed in liquid He and the multiplexed signals reduces the number of cables to the room temperature region. sX-map has the advantages in its compact size, low cost and simple setup for nondestructive inspections. The sX-map system detected X-rays from field emissions in vertical RF tests of ILC 9-cell cavities at Jefferson Lab (JLab) and KEK. sX-map showed an excellent performance in the meas-urement test at JLab, it exhibited a high sensitivity com-pared with an the fixed diode rings colocated at irises and ion chamber located out side of the vertical test cryostat.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-MOPVA075

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TUPIK096

Data-Driven Controller Design for High Precision Pulsed Power Converters for Bumper Magnets of the PS Booster

controls, flattop, framework, booster

1928

A. Nicoletti, M. Martino
CERN, Geneva, Switzerland

A new data-driven approach using the frequency response function of a system is proposed for designing robust digital controllers for the injection bumper magnet (BSW) power supplies of the PS Booster. The powering of the BSW requires high precision 3.4 kA to 6.7 kA trapezoidal current pulses with 2 ms flat-top and 5 ms ramp-up and ramp-down time. The tracking error must remain within ± 50 parts-per-million (ppm) during the flat-top of the trapezoidal reference, and ± 500 ppm during the ramp-down. The BSW is powered with a four quadrant switch-mode power converter and the current through the magnet is controlled in closed-loop form with a 2-degree-of-freedom controller at a sampling rate of 10 kHz. A convex optimization algorithm is performed for obtaining the controller parameters. The effectiveness of the method is illustrated by designing the controller for a full-scale prototype of the BSW system at CERN, which is in the framework of the LHC Injector Upgrade (LIU) project.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPIK096

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TUPVA118

Particle Accelerators for Humanity: Resources for Public Engagement with Particle Accelerators

proton, quadrupole, neutron, photon

2369

S.L. Sheehy
JAI, Oxford, United Kingdom

To those who work in the accelerator field, it is obvious that there are many applications of accelerators beyond particle physics. Yet the public remains largely unaware of the far reaching uses of accelerators, or the scientific and engineering challenges that lay behind them. A recent project Particle Accelerators for Humanity has addressed this gap by creating a series of video resources, based on a programme of live events, short films and a specially commissioned animation. The project captured the dedication and diversity of those who design, operate and work with accelerators and highlights the varied ways in which their work is impacting on our lives. Here we overview the project and the resources, available under Creative Commons license, and discuss the impact of the project so far. We encourage the accelerator community to use the resources in their teaching and public engagement activities.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPVA118

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

WEPAB091

Progress on Transparent Realignment of the Diamond Storage Ring

alignment, controls, storage-ring, monitoring

2790

M. Apollonio, R. Bartolini, W.J. Hoffman, A.J. Rose, A. Thomson
DLS, Oxfordshire, United Kingdom
R. Bartolini
JAI, Oxford, United Kingdom

The mechanical alignment of Diamond Storage Ring is achieved by means of a 5-axis motion system under remote control via the EPICS toolkit from the Diamond Control Room. We have completed the first phase of the realignment program meant to improve the mechanical alignment of the machine by carefully moving the magnet girders with a virtually zero impact on the associated beamlines, hence the name Transparent Realignment (TR). During this phase we have equipped and realigned 3 out of 24 cells, involving two beamlines. We have also tested and perfected the technique to execute a move with live beam and total remote control of the realignment process. The program has entered a second phase entailing the commissioning of 6 more cells. Details of tests on the machine are reported.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-WEPAB091

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THPVA069

NSC KIPT Experience in Use of Laser Tracker Leica at 401 in Equipment Alignment of 100 MeV/100 KW Electron Linear Accelerator of Neutron Source Driver

target, quadrupole, neutron, electron

4604

M. Moisieienko, O. Bezditko, I.M. Karnaukhov, A. Mytsykov, A.Y. Zelinsky
NSC/KIPT, Kharkov, Ukraine

For successful operation of electron linear accelerator that is driver of NSC KIPT Neutron source it is necessary that all the acceleration sections and all the electromagnetic elements should be installed in design position according to the designed lattice. Accuracies of all electromagnetic elements installation are 150 mkm in transverse positions and 200 mrad for all three rotation directions. The whole process, fiducialization and developing of coordinate net, is controlled by Laser tracker Leica AT 401. Well-planned methods allow to realize uniform irradiation of neutron-generation target.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-THPVA069

Export •

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