Cyclotrons2016 - List of Keywords (space-charge)

Paper	Title	Other Keywords	Page
MOP03	Developed Numerical Code Based on the Effects of Space Charge in Central Region of 10 MeV Cyclotron	cyclotron, ion, ion-source, injection	49
	M. Afkhami Karaei, H. Afarideh, S. Azizpourian, M. Mousavinia, R. Solhju, F. Taft AUT, Tehran, Iran J.-S. Chai, M. Ghergherehchi SKKU, Suwon, Republic of Korea
	To study of space charge effects in 10 MeV cyclotron of Amirkabir University of Technology the C++ code is developed. This cyclotron is designed to accelerate H⁻ up to 10MeV energy. The important components of cyclotron that effect on calculations of space charge include four sector magnets, 2 RF cavities with 71MHz frequency and internal PIG ion source. Equations of motion and effects of charged particles in electromagnetic field of accelerator are integrated in C++ code. The conventional method, 4-order Runge-Kutta, is used to solve the equations. The results of calculations show space charge effects of beam particles on each other in accelerating process.
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MOP11	Injection Line Studies for the SPC2 Cyclotron at iThemba LABS	ion, cyclotron, bunching, simulation	75
	F. Nemulodi, J.I. Broodryk, J.L. Conradie, J.G. De Villiers, W. Duckitt, D.T. Fourie, J. Mira, R.W. Thomae, M.J. Van Niekerk iThemba LABS, Somerset West, South Africa J.J. Yang, T.J. Zhang CIAE, Beijing, People's Republic of China
	The transmission efficiency of some ion beams through the second solid-pole injector cyclotron (SPC2) at iThemba LABS requires improvement. In order to understand the beam optics in the injection line, and match the beam to the acceptance of the cyclotron, the beam envelope behaviour from the beginning of injection-line to the inside of the SPC2 cyclotron was investigated with different simulation programs. The transverse effects were taken into account by the beam transport codes TRANSOPTR and TRANSPORT, while the multi particle simulation code OPAL was used to include space-charge effects. Simulations of the effect of an additional buncher, operating at the second harmonic, on the transmission of the beam of charged particles through the cyclotron were made.
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WEA01	Some Examples of Recent Progress of Beam-Dynamics Studies for Cyclotrons	cyclotron, simulation, injection, extraction	244
	W.J.G.M. Kleeven IBA, Louvain-la-Neuve, Belgium
	Two subjects are highlighted. The first is the problem of high space charge effects in cyclotrons. The second is the the progress in development of tools and simulations for industrial and medical cyclotrons at IBA.
	Slides WEA01 [2.060 MB]
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WEA03	Space-charge Simulation of TRIUMF 500 MeV Cyclotron	cyclotron, TRIUMF, simulation, focusing	254
	T. Planche, R.A. Baartman, I.V. Bylinskii, Y.-N. Rao TRIUMF, Canada's National Laboratory for Particle and Nuclear Physics, Vancouver, Canada
	Funding: TRIUMF also receives federal funding via a contribution agreement through the National Research Council of Canada. We present a method to improve computation efficiency of space charge simulations in cyclotrons. This method is particularly efficient for simulating long bunches where length is large compared to both transverse size and turn separation. We show results of application to space charge effects in the TRIUMF 500 MeV cyclotron.
	Slides WEA03 [3.145 MB]
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THP16	Beam Based Calibration Measurements at the PSI Cyclotron Facility	extraction, cyclotron, survey, proton	342
	C. Baumgarten PSI, Villigen PSI, Switzerland
	The PSI cyclotron facility is in operation since four decades. Even though the design details of the original machine are well documented, doubts may remain, if all changes of the most relevant devices during 40 years of operation are known with certainty. Furthermore some measurements like magnetic field mappings and central region alignment measurements can be done only during the construction and assembly phase either for mechanical reasons, due to limited shutdown or maintenance periods or because of the activation of components. Therefore it is important to develop methods that allow to check important parameters during beam operation without a disassembling of components. An effective method to test the consistency of the data is based on the combination of beam tracking simulations and beam based measurements. We present some beam based alignment and calibration measurements concerning collimator positions, Dee voltage distributions, turn patterns, beam energy and trim coil field profiles using measurements of radial probes, phase pickups and profile monitors.
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THD01	High Intensity and Other World Wide Developments in FFAG	proton, cyclotron, injection, simulation	374
	S.L. Sheehy JAI, Oxford, United Kingdom
	Here I present an overview of developments in Fixed Field Alternating Gradient accelerators, focusing on high intensity hadron accelerator designs. The talk will detail progress in studies of space charge effects and simulation, experimental characterisation of a 150 MeV proton FFAG at KURRI in Japan, experimental optimisation of FFAGs and novel FFAG developments for future applications.
	Slides THD01 [12.473 MB]
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Paper

Title

Other Keywords

Page

MOP03

Developed Numerical Code Based on the Effects of Space Charge in Central Region of 10 MeV Cyclotron

cyclotron, ion, ion-source, injection

49

M. Afkhami Karaei, H. Afarideh, S. Azizpourian, M. Mousavinia, R. Solhju, F. Taft
AUT, Tehran, Iran
J.-S. Chai, M. Ghergherehchi
SKKU, Suwon, Republic of Korea

To study of space charge effects in 10 MeV cyclotron of Amirkabir University of Technology the C++ code is developed. This cyclotron is designed to accelerate H⁻ up to 10MeV energy. The important components of cyclotron that effect on calculations of space charge include four sector magnets, 2 RF cavities with 71MHz frequency and internal PIG ion source. Equations of motion and effects of charged particles in electromagnetic field of accelerator are integrated in C++ code. The conventional method, 4-order Runge-Kutta, is used to solve the equations. The results of calculations show space charge effects of beam particles on each other in accelerating process.

Export •

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

MOP11

Injection Line Studies for the SPC2 Cyclotron at iThemba LABS

ion, cyclotron, bunching, simulation

75

F. Nemulodi, J.I. Broodryk, J.L. Conradie, J.G. De Villiers, W. Duckitt, D.T. Fourie, J. Mira, R.W. Thomae, M.J. Van Niekerk
iThemba LABS, Somerset West, South Africa
J.J. Yang, T.J. Zhang
CIAE, Beijing, People's Republic of China

The transmission efficiency of some ion beams through the second solid-pole injector cyclotron (SPC2) at iThemba LABS requires improvement. In order to understand the beam optics in the injection line, and match the beam to the acceptance of the cyclotron, the beam envelope behaviour from the beginning of injection-line to the inside of the SPC2 cyclotron was investigated with different simulation programs. The transverse effects were taken into account by the beam transport codes TRANSOPTR and TRANSPORT, while the multi particle simulation code OPAL was used to include space-charge effects. Simulations of the effect of an additional buncher, operating at the second harmonic, on the transmission of the beam of charged particles through the cyclotron were made.

Export •

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

WEA01

Some Examples of Recent Progress of Beam-Dynamics Studies for Cyclotrons

cyclotron, simulation, injection, extraction

244

W.J.G.M. Kleeven
IBA, Louvain-la-Neuve, Belgium

Two subjects are highlighted. The first is the problem of high space charge effects in cyclotrons. The second is the the progress in development of tools and simulations for industrial and medical cyclotrons at IBA.

Slides WEA01 [2.060 MB]

Export •

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

WEA03

Space-charge Simulation of TRIUMF 500 MeV Cyclotron

cyclotron, TRIUMF, simulation, focusing

254

T. Planche, R.A. Baartman, I.V. Bylinskii, Y.-N. Rao
TRIUMF, Canada's National Laboratory for Particle and Nuclear Physics, Vancouver, Canada

Funding: TRIUMF also receives federal funding via a contribution agreement through the National Research Council of Canada.
We present a method to improve computation efficiency of space charge simulations in cyclotrons. This method is particularly efficient for simulating long bunches where length is large compared to both transverse size and turn separation. We show results of application to space charge effects in the TRIUMF 500 MeV cyclotron.

Slides WEA03 [3.145 MB]

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

THP16

Beam Based Calibration Measurements at the PSI Cyclotron Facility

extraction, cyclotron, survey, proton

342

C. Baumgarten
PSI, Villigen PSI, Switzerland

The PSI cyclotron facility is in operation since four decades. Even though the design details of the original machine are well documented, doubts may remain, if all changes of the most relevant devices during 40 years of operation are known with certainty. Furthermore some measurements like magnetic field mappings and central region alignment measurements can be done only during the construction and assembly phase either for mechanical reasons, due to limited shutdown or maintenance periods or because of the activation of components. Therefore it is important to develop methods that allow to check important parameters during beam operation without a disassembling of components. An effective method to test the consistency of the data is based on the combination of beam tracking simulations and beam based measurements. We present some beam based alignment and calibration measurements concerning collimator positions, Dee voltage distributions, turn patterns, beam energy and trim coil field profiles using measurements of radial probes, phase pickups and profile monitors.

Export •

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

THD01

High Intensity and Other World Wide Developments in FFAG

proton, cyclotron, injection, simulation

374

S.L. Sheehy
JAI, Oxford, United Kingdom

Here I present an overview of developments in Fixed Field Alternating Gradient accelerators, focusing on high intensity hadron accelerator designs. The talk will detail progress in studies of space charge effects and simulation, experimental characterisation of a 150 MeV proton FFAG at KURRI in Japan, experimental optimisation of FFAGs and novel FFAG developments for future applications.

Slides THD01 [12.473 MB]

Export •

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