Cyclotrons2019 - List of Keywords (neutron)

Paper	Title	Other Keywords	Page
MOA01	Recent Experimental Results of the Accelerator Driven System with a Sub-Critical Nuclear Reactor (ADS) Program	proton, FFAG, experiment, target	1
	Y. Ishi, Y. Fuwa, Y. Kuriyama, Y. Mori, H. Okita, K. Suga, T. Uesugi Kyoto University, Research Reactor Institute, Osaka, Japan Y. Fuwa JAEA/J-PARC, Tokai-mura, Japan
	A series of study on the accelerator driven system (ADS) has been carried out since 2009 at KURNS. In these studies, Kyoto University Critical Assembly (KUCA) has been used as sub-critical system connected with the proton beam line from FFAG accelerator facility. A profile of accelerator facility and experimental results, including the first evidence of the transmutation of minor actinides at ADS, will be presented. stands for Institute for Integrated Radiation and Nuclear Science, Kyoto University.
	Slides MOA01 [18.120 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-Cyclotrons2019-MOA01
About •	paper received ※ 15 September 2019 paper accepted ※ 24 September 2019 issue date ※ 20 June 2020
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

MOP022	Project of a Novel Multi-Orbital Beam Bunching and Extraction from the U-120M Cyclotron	cyclotron, target, extraction, bunching	80
	M. Čihák, R. Běhal, P. Krist, T. Matlocha, J. Stursa, V. Zach NPI, Řež near Prague, Czech Republic
	We introduce the bunching system for a time structure control of the U-120M cyclotron beam. The system is based on a unique pulsed vertical deflection of the selected final orbits of the internal accelerated beam of the H⁻ ions to an extractor-stripper (a thin carbon foil positioned below the cyclotron median plane). A set of home-made programs have been developed for simulations and parameters determination of the system. Results of some simulations (i.e. dimensions of the deflection system, parameters of the pulsed high voltage power supply, position of the stripper, beam trajectories, beam parameters, beam losses, Be target position etc.) are presented. The system will be used for fast neutron generation and consequently for spectrometric measurement of neutron energy by the time of flight (ToF) method. The system will provide beam bunch interval up to 1000 ns range of a defined beam time structure (up to beam bunch period to beam bunch width ratio min 100).
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-Cyclotrons2019-MOP022
About •	paper received ※ 15 September 2019 paper accepted ※ 25 September 2019 issue date ※ 20 June 2020
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

MOP023	Synchronization and High Speed High Voltage Switcher for Pulse Bunching System of the Cyclotron U-120M	cyclotron, proton, PLC, bunching	83
	P. Krist, D. Poklop, J. Stursa NPI, Řež near Prague, Czech Republic V. Cervenka HiLASE Centre, Institute of Physics ASCR, v.v.i., Dolní BřeÂany, Czech Republic J. Vozáb Radan s.r.o., Barchov, Czech Republic
	Pulse bunching system for neutron time of flight (ToF) measurements on the cyclotron U-120M exploits a unique pulsed vertical deflection of the selected final orbits of the internal accelerated beam of the H⁻ ions to an extractor-stripper. This system is described in details on an individual poster of this conference. A key device is the pulse HV power supply (HV switcher) which is supplying the deflector and elevates H⁻ ions in defined time structure to an extractor-stripper. The developed HV switcher is based on the SiC MOSFET transistors. It can provide HV pulses with the following pulse parameters: amplitude up to 13 kV, front edge less than 20 ns, flat top 20 ns, back edge less than 20 ns and repetition frequency up to several hundred of kHz. We have also developed the pulse synchronization with the cyclotron RF (25 MHz), which enables to set up front edge of bunching pulses within 2pi with accuracy 80 ps. Human-machine interface is based on SCADA software Reliance and PLC Tecomat Foxtrot. The time waveforms of the real pulses are part of the presentation.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-Cyclotrons2019-MOP023
About •	paper received ※ 15 September 2019 paper accepted ※ 25 September 2019 issue date ※ 20 June 2020
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TUA04	Characterization of Neutron Leakage Field Coming from 18O(p, n)18F Reaction in PET Production Cyclotron	proton, detector, experiment, cyclotron	136
	M. Schulc, M. Antos, F. Brijar, M. Cuhra, T. Czakoj, M. Košťál, E. Losa, V. Rypar, J. Simon, S. Vadjak Nuclear Research Institute Řež plc, Řež, Czech Republic F. Cvachovec University of Defence, Brno, Czech Republic Z. Matej, F. Mravec Masaryk University, Brno, Czech Republic
	This paper shows a new method for characterization of the secondary neutron field quantities, specifically neutron spectrum leaking from 18O enriched H₂O XL cylindrical target in IBA Cyclone 18/9 in the energy range of 1-15 MeV. Spectrum is measured by stilbene scintillation detector in different places. The neutron spectra are evaluated from the measured proton recoil spectra using deconvolution through maximum likelihood estimation. A leakage neutron field is an interesting option for irradiation experiments due to quite high flux, but also to the validation of high energy threshold reactions due to relatively high average energy. Measured neutron spectra are compared with calculations in MCNP6 model using TENDL-2017, FENDL-3, and default MCNP6 model calculations. TENDL-2017 and FENDL-3 libraries results differ significantly in the shape of the neutron spectrum for energies above 10 MeV while MCNP6 gives incorrect angular distributions. Activation measurements of different neutron induced reactions support characterization. The 18F production yield is in a good agreement with TENDL-2017 proton library calculation within respective uncertainties.
	Slides TUA04 [2.286 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-Cyclotrons2019-TUA04
About •	paper received ※ 05 September 2019 paper accepted ※ 25 September 2019 issue date ※ 20 June 2020
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUP005	Three Years Operation of CYCIAE-100	experiment, proton, target, radiation	156
	T. Ge, L.C. Cao, Z.H. Fu, S.G. Hou, B. Ji, H. Jiang, S.Q. Li, Y.Q. Li, Z.W. Liu, Y.L. Lv, G.F. Pan, L. Wang, L.P. Wen, Z.G. Yin, T.J. Zhang CIAE, Beijing, People’s Republic of China
	The 100 MeV high intensity proton cyclotron (CYCIAE-100) developed by China Institute of Atomic Energy is a multi-purpose variable energy AVF cyclotron. Its design specifications are: energy from 75 to 100 MeV continuously adjustable, beam intensity 200uA, beam current can be extracted in both directions. CYCIAE-100 was commissioned to extract 100 MeV proton beam for the first time in July 2014. The first physics experiment was carried out in November 2016. By June 2019, the design specifications of CYCIAE-100 was commissioned and the maximum beam power was 52 kW. The beam intensity range from 1 pA to 520 µA is achieved, and the beam stability is about 1% for 8 hours. Several typical physics experiments have been carried out. Such as: The physics experiment of CYCIAE-100 driving ISOL device to generate radioactive nuclear beam, SiC and SRAM proton irradiation experiments, calibration experiment of high-energy proton electron total dose detector probe, etc. At present, the beam time for CYCIAE-100 is about 5,000 hours, providing effective beam time for more than 3,000 hours for many users at home and abroad, and the other beam time for beam development.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-Cyclotrons2019-TUP005
About •	paper received ※ 15 September 2019 paper accepted ※ 26 September 2019 issue date ※ 20 June 2020
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUP012	Upgrade of the iThemba LABS Neutron Beam Vault to a Metrology Facility	target, proton, experiment, radiation	181
	N.B. Ndlovu, P.P. Maleka, F.D. Smit iThemba LABS, Somerset West, South Africa A. Boso NPL, Middlesex, United Kingdom A. Buffler, D. Geduld, T. Hutton, T. Leadbeater UCT Physics, Cape Town, South Africa V. Lacoste IRSN, Saint-Paul-Lez-Durance, France
	Quasi-monoenergetic neutron beams are typically produced at the iThemba LABS fast neutron beam facility by the 7Li(p, xn) or 9Be(p, xn) reactions. With the proton beams available from the separated sector cyclotron, the neutron energy range from about 30 MeV to 200 MeV can be covered almost continuously. The facility first became operational in the late 1980s. The fast neutron beam facility at iThemba LABS has been designated by the National Metrology Institute of South Africa (NMISA) as an entity responsible for providing traceability for the medium and high-energy neutron measurements in South Africa. As a result, the facility is undergoing a major upgrade and development in order for it to meet the requirements for a medium and high-energy neutron metrology facility. As part of the ongoing upgrade, Monte Carlo (MC) simulations aimed at benchmarking the experimental data are ongoing.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-Cyclotrons2019-TUP012
About •	paper received ※ 14 September 2019 paper accepted ※ 25 September 2019 issue date ※ 20 June 2020
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUP019	Recent Extensions of JULIC for HBS Investigations	experiment, cyclotron, target, proton	195
	O. Felden, N. Demary, N.-O. Fröhlich, R. Gebel, Y. Valdau FZJ, Jülich, Germany M. Rimmler JCNS, Jülich, Germany
	At the Forschungszentrum Jülich (FZJ) the energy variable cyclotron JULIC is used as injector of the Cooler Synchrotron (COSY) and for low to medium current irradiations of different types. Recently a new target station was set up and is mainly used for tests of new target materials, neutron target development and neutron yield investigations with high power proton or deuteron beam in perspective of a high brilliance accelerator based neutron source (HBS) with the Jülich Center for Neutron Science. The neutrons are produced exposing material targets or compounds to proton or deuterium particles of relative low final particle energy in the MeV range and will be optimized for neutron scattering to be realized at reasonable costs. Beside this, ToF-experiments are performed to investigate and optimize the pulsing structure for HBS. The target station is installed inside an experimental area offering space for complex detector and component setups for nuclear and neutron related experiments. But it is used for other purposes like electronic or detector tests and irradiation as well. This report briefly summarizes the history of JULIC and the activities for its future perspectives.
	Poster TUP019 [1.562 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-Cyclotrons2019-TUP019
About •	paper received ※ 15 September 2019 paper accepted ※ 25 September 2019 issue date ※ 20 June 2020
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUC04	Status of the Cyclotron Facility at Research Center for Nuclear Physics	cyclotron, proton, operation, ion-source	259
	H. Kanda, M. Fukuda, S. Hara, T. Hara, K. Hatanaka, K. Kamakura, H.W. Koay, S. Morinobu, Y. Morita, M. Nakao, K. Omoto, T. Saito, K. Takeda, H. Tamura, Y. Yasuda, T. Yorita RCNP, Osaka, Japan
	Research Center for Nuclear Physics (RCNP), Osaka University operates a K140 AVF cyclotron and a K400 ring cyclotron and promotes the nuclear physics, accelerator physics, material science, nuclear medicine and related scientific fields. In the recent years, we operated the CAGRA campaign and Grand-RAIDEN+CAGRA campaign experiments* for taking advantage of the low background environment of the RCNP experimental halls and the high quality beams. We have successfully completed the low energy muon beam line, MuSIC*. We have been carrying out a program of the upgrade of the K140 AVF cyclotron which continued working since 1973. We aim at 10 times higher intensity for the proton beam than before and further stability of the operation. We also carried out the upgrade of the cyclotron building and related facilities to handle beams with higher intensity. From 2019, the RCNP started the Research Center of Subatomic Sciences as the International Joint Usage/Research Center in Japan. These upgrades are the most important programs to extend the function of the newly established center. E. Ideguchi, SSNET’17 - Abstracts and slides, (p. 1990). France, (2017). **D. Tomono, PoS(NuFact2017) 111, (2018).
	Slides TUC04 [8.696 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-Cyclotrons2019-TUC04
About •	paper received ※ 15 September 2019 paper accepted ※ 26 September 2019 issue date ※ 20 June 2020
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEC01	Conceptual Design of Central Region for High-Temperature Superconducting Skeleton Cyclotron (HTS-SC)	cyclotron, injection, space-charge, extraction	279
	H.W. Koay, M. Fukuda, H. Kanda, M. Nakao, T. Yorita RCNP, Osaka, Japan
	A compact high-current accelerator is highly desirable for short and effective Boron Neutron Capture Therapy (BNCT) as well as radioisotopes production in a hospital environment. In accordance with this, a compact high-temperature superconducting skeleton cyclotron (HTS-SC) was proposed. HTS-SC is an air-core K-80 cyclotron with a relatively small extraction radius of 40 cm for a 50 MeV H⁺ and 40 MeV D⁺ beam. Owing to its compactness, a relatively high central magnetic field (>2.4 T) remains as a significant challenge for high current injection. This work describes a preliminary study of the injection using a spiral inflector and the central region design of the HTS-SC. Besides, the transverse beam dynamics are also discussed in order to investigate the upper limit of injection current.
	Slides WEC01 [3.191 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-Cyclotrons2019-WEC01
About •	paper received ※ 15 September 2019 paper accepted ※ 25 September 2019 issue date ※ 20 June 2020
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Other Keywords

Page

MOA01

Recent Experimental Results of the Accelerator Driven System with a Sub-Critical Nuclear Reactor (ADS) Program

proton, FFAG, experiment, target

1

Y. Ishi, Y. Fuwa, Y. Kuriyama, Y. Mori, H. Okita, K. Suga, T. Uesugi
Kyoto University, Research Reactor Institute, Osaka, Japan
Y. Fuwa
JAEA/J-PARC, Tokai-mura, Japan

A series of study on the accelerator driven system (ADS) has been carried out since 2009 at KURNS*. In these studies, Kyoto University Critical Assembly (KUCA) has been used as sub-critical system connected with the proton beam line from FFAG accelerator facility. A profile of accelerator facility and experimental results, including the first evidence of the transmutation of minor actinides at ADS, will be presented.
* stands for Institute for Integrated Radiation and Nuclear Science, Kyoto University.

Slides MOA01 [18.120 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-Cyclotrons2019-MOA01

About •

paper received ※ 15 September 2019 paper accepted ※ 24 September 2019 issue date ※ 20 June 2020

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

MOP022

Project of a Novel Multi-Orbital Beam Bunching and Extraction from the U-120M Cyclotron

cyclotron, target, extraction, bunching

80

M. Čihák, R. Běhal, P. Krist, T. Matlocha, J. Stursa, V. Zach
NPI, Řež near Prague, Czech Republic

We introduce the bunching system for a time structure control of the U-120M cyclotron beam. The system is based on a unique pulsed vertical deflection of the selected final orbits of the internal accelerated beam of the H⁻ ions to an extractor-stripper (a thin carbon foil positioned below the cyclotron median plane). A set of home-made programs have been developed for simulations and parameters determination of the system. Results of some simulations (i.e. dimensions of the deflection system, parameters of the pulsed high voltage power supply, position of the stripper, beam trajectories, beam parameters, beam losses, Be target position etc.) are presented. The system will be used for fast neutron generation and consequently for spectrometric measurement of neutron energy by the time of flight (ToF) method. The system will provide beam bunch interval up to 1000 ns range of a defined beam time structure (up to beam bunch period to beam bunch width ratio min 100).

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-Cyclotrons2019-MOP022

About •

paper received ※ 15 September 2019 paper accepted ※ 25 September 2019 issue date ※ 20 June 2020

Export •

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

MOP023

Synchronization and High Speed High Voltage Switcher for Pulse Bunching System of the Cyclotron U-120M

cyclotron, proton, PLC, bunching

83

P. Krist, D. Poklop, J. Stursa
NPI, Řež near Prague, Czech Republic
V. Cervenka
HiLASE Centre, Institute of Physics ASCR, v.v.i., Dolní BřeÂany, Czech Republic
J. Vozáb
Radan s.r.o., Barchov, Czech Republic

Pulse bunching system for neutron time of flight (ToF) measurements on the cyclotron U-120M exploits a unique pulsed vertical deflection of the selected final orbits of the internal accelerated beam of the H⁻ ions to an extractor-stripper. This system is described in details on an individual poster of this conference. A key device is the pulse HV power supply (HV switcher) which is supplying the deflector and elevates H⁻ ions in defined time structure to an extractor-stripper. The developed HV switcher is based on the SiC MOSFET transistors. It can provide HV pulses with the following pulse parameters: amplitude up to 13 kV, front edge less than 20 ns, flat top 20 ns, back edge less than 20 ns and repetition frequency up to several hundred of kHz. We have also developed the pulse synchronization with the cyclotron RF (25 MHz), which enables to set up front edge of bunching pulses within 2pi with accuracy 80 ps. Human-machine interface is based on SCADA software Reliance and PLC Tecomat Foxtrot. The time waveforms of the real pulses are part of the presentation.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-Cyclotrons2019-MOP023

About •

paper received ※ 15 September 2019 paper accepted ※ 25 September 2019 issue date ※ 20 June 2020

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

TUA04

Characterization of Neutron Leakage Field Coming from 18O(p, n)18F Reaction in PET Production Cyclotron

proton, detector, experiment, cyclotron

136

M. Schulc, M. Antos, F. Brijar, M. Cuhra, T. Czakoj, M. Košťál, E. Losa, V. Rypar, J. Simon, S. Vadjak
Nuclear Research Institute Řež plc, Řež, Czech Republic
F. Cvachovec
University of Defence, Brno, Czech Republic
Z. Matej, F. Mravec
Masaryk University, Brno, Czech Republic

This paper shows a new method for characterization of the secondary neutron field quantities, specifically neutron spectrum leaking from 18O enriched H₂O XL cylindrical target in IBA Cyclone 18/9 in the energy range of 1-15 MeV. Spectrum is measured by stilbene scintillation detector in different places. The neutron spectra are evaluated from the measured proton recoil spectra using deconvolution through maximum likelihood estimation. A leakage neutron field is an interesting option for irradiation experiments due to quite high flux, but also to the validation of high energy threshold reactions due to relatively high average energy. Measured neutron spectra are compared with calculations in MCNP6 model using TENDL-2017, FENDL-3, and default MCNP6 model calculations. TENDL-2017 and FENDL-3 libraries results differ significantly in the shape of the neutron spectrum for energies above 10 MeV while MCNP6 gives incorrect angular distributions. Activation measurements of different neutron induced reactions support characterization. The 18F production yield is in a good agreement with TENDL-2017 proton library calculation within respective uncertainties.

Slides TUA04 [2.286 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-Cyclotrons2019-TUA04

About •

paper received ※ 05 September 2019 paper accepted ※ 25 September 2019 issue date ※ 20 June 2020

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

TUP005

Three Years Operation of CYCIAE-100

experiment, proton, target, radiation

156

T. Ge, L.C. Cao, Z.H. Fu, S.G. Hou, B. Ji, H. Jiang, S.Q. Li, Y.Q. Li, Z.W. Liu, Y.L. Lv, G.F. Pan, L. Wang, L.P. Wen, Z.G. Yin, T.J. Zhang
CIAE, Beijing, People’s Republic of China

The 100 MeV high intensity proton cyclotron (CYCIAE-100) developed by China Institute of Atomic Energy is a multi-purpose variable energy AVF cyclotron. Its design specifications are: energy from 75 to 100 MeV continuously adjustable, beam intensity 200uA, beam current can be extracted in both directions. CYCIAE-100 was commissioned to extract 100 MeV proton beam for the first time in July 2014. The first physics experiment was carried out in November 2016. By June 2019, the design specifications of CYCIAE-100 was commissioned and the maximum beam power was 52 kW. The beam intensity range from 1 pA to 520 µA is achieved, and the beam stability is about 1% for 8 hours. Several typical physics experiments have been carried out. Such as: The physics experiment of CYCIAE-100 driving ISOL device to generate radioactive nuclear beam, SiC and SRAM proton irradiation experiments, calibration experiment of high-energy proton electron total dose detector probe, etc. At present, the beam time for CYCIAE-100 is about 5,000 hours, providing effective beam time for more than 3,000 hours for many users at home and abroad, and the other beam time for beam development.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-Cyclotrons2019-TUP005

About •

paper received ※ 15 September 2019 paper accepted ※ 26 September 2019 issue date ※ 20 June 2020

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

TUP012

Upgrade of the iThemba LABS Neutron Beam Vault to a Metrology Facility

target, proton, experiment, radiation

181

N.B. Ndlovu, P.P. Maleka, F.D. Smit
iThemba LABS, Somerset West, South Africa
A. Boso
NPL, Middlesex, United Kingdom
A. Buffler, D. Geduld, T. Hutton, T. Leadbeater
UCT Physics, Cape Town, South Africa
V. Lacoste
IRSN, Saint-Paul-Lez-Durance, France

Quasi-monoenergetic neutron beams are typically produced at the iThemba LABS fast neutron beam facility by the 7Li(p, xn) or 9Be(p, xn) reactions. With the proton beams available from the separated sector cyclotron, the neutron energy range from about 30 MeV to 200 MeV can be covered almost continuously. The facility first became operational in the late 1980s. The fast neutron beam facility at iThemba LABS has been designated by the National Metrology Institute of South Africa (NMISA) as an entity responsible for providing traceability for the medium and high-energy neutron measurements in South Africa. As a result, the facility is undergoing a major upgrade and development in order for it to meet the requirements for a medium and high-energy neutron metrology facility. As part of the ongoing upgrade, Monte Carlo (MC) simulations aimed at benchmarking the experimental data are ongoing.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-Cyclotrons2019-TUP012

About •

paper received ※ 14 September 2019 paper accepted ※ 25 September 2019 issue date ※ 20 June 2020

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

TUP019

Recent Extensions of JULIC for HBS Investigations

experiment, cyclotron, target, proton

195

O. Felden, N. Demary, N.-O. Fröhlich, R. Gebel, Y. Valdau
FZJ, Jülich, Germany
M. Rimmler
JCNS, Jülich, Germany

At the Forschungszentrum Jülich (FZJ) the energy variable cyclotron JULIC is used as injector of the Cooler Synchrotron (COSY) and for low to medium current irradiations of different types. Recently a new target station was set up and is mainly used for tests of new target materials, neutron target development and neutron yield investigations with high power proton or deuteron beam in perspective of a high brilliance accelerator based neutron source (HBS) with the Jülich Center for Neutron Science. The neutrons are produced exposing material targets or compounds to proton or deuterium particles of relative low final particle energy in the MeV range and will be optimized for neutron scattering to be realized at reasonable costs. Beside this, ToF-experiments are performed to investigate and optimize the pulsing structure for HBS. The target station is installed inside an experimental area offering space for complex detector and component setups for nuclear and neutron related experiments. But it is used for other purposes like electronic or detector tests and irradiation as well. This report briefly summarizes the history of JULIC and the activities for its future perspectives.

Poster TUP019 [1.562 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-Cyclotrons2019-TUP019

About •

paper received ※ 15 September 2019 paper accepted ※ 25 September 2019 issue date ※ 20 June 2020

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

TUC04

Status of the Cyclotron Facility at Research Center for Nuclear Physics

cyclotron, proton, operation, ion-source

259

H. Kanda, M. Fukuda, S. Hara, T. Hara, K. Hatanaka, K. Kamakura, H.W. Koay, S. Morinobu, Y. Morita, M. Nakao, K. Omoto, T. Saito, K. Takeda, H. Tamura, Y. Yasuda, T. Yorita
RCNP, Osaka, Japan

Research Center for Nuclear Physics (RCNP), Osaka University operates a K140 AVF cyclotron and a K400 ring cyclotron and promotes the nuclear physics, accelerator physics, material science, nuclear medicine and related scientific fields. In the recent years, we operated the CAGRA campaign and Grand-RAIDEN+CAGRA campaign experiments* for taking advantage of the low background environment of the RCNP experimental halls and the high quality beams. We have successfully completed the low energy muon beam line, MuSIC**. We have been carrying out a program of the upgrade of the K140 AVF cyclotron which continued working since 1973. We aim at 10 times higher intensity for the proton beam than before and further stability of the operation. We also carried out the upgrade of the cyclotron building and related facilities to handle beams with higher intensity. From 2019, the RCNP started the Research Center of Subatomic Sciences as the International Joint Usage/Research Center in Japan. These upgrades are the most important programs to extend the function of the newly established center.
*E. Ideguchi, SSNET’17 - Abstracts and slides, (p. 1990). France, (2017).
**D. Tomono, PoS(NuFact2017) 111, (2018).

Slides TUC04 [8.696 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-Cyclotrons2019-TUC04

About •

paper received ※ 15 September 2019 paper accepted ※ 26 September 2019 issue date ※ 20 June 2020

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WEC01

Conceptual Design of Central Region for High-Temperature Superconducting Skeleton Cyclotron (HTS-SC)

cyclotron, injection, space-charge, extraction

279

H.W. Koay, M. Fukuda, H. Kanda, M. Nakao, T. Yorita
RCNP, Osaka, Japan

A compact high-current accelerator is highly desirable for short and effective Boron Neutron Capture Therapy (BNCT) as well as radioisotopes production in a hospital environment. In accordance with this, a compact high-temperature superconducting skeleton cyclotron (HTS-SC) was proposed. HTS-SC is an air-core K-80 cyclotron with a relatively small extraction radius of 40 cm for a 50 MeV H⁺ and 40 MeV D⁺ beam. Owing to its compactness, a relatively high central magnetic field (>2.4 T) remains as a significant challenge for high current injection. This work describes a preliminary study of the injection using a spiral inflector and the central region design of the HTS-SC. Besides, the transverse beam dynamics are also discussed in order to investigate the upper limit of injection current.

Slides WEC01 [3.191 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-Cyclotrons2019-WEC01

About •

paper received ※ 15 September 2019 paper accepted ※ 25 September 2019 issue date ※ 20 June 2020

Export •

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