RuPAC2016 - List of Keywords (extraction)

Paper	Title	Other Keywords	Page
TUZMH01	Status of U-70	proton, target, flattop, acceleration	44
	S.V. Ivanov IHEP, Moscow Region, Russia
	Funding: National Research Centre "Kurchatov Institute" The report overviews present status of the Accelerator Complex U70 at IHEP of NRC "Kurchatov Institute". The emphasis is put on the recent activity and upgrades implemented since the previous conference RuPAC-2014, in a run-by-run chronological ordering. * on behalf of the U70 staff
	Slides TUZMH01 [6.858 MB]
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WECAMH01	Some Problems of the Beam Extraction from Circular Accelerators	controls, injection, booster, resonance	61
	S.N. Andrianov St. Petersburg State University, St. Petersburg, Russia N.S. Edamenko Saint Petersburg State University, Saint Petersburg, Russia
	In this article some problems of optimizing the output beam of particles from the circular accelerator are discussed. In particular, we consider some problems of matching the booster, Nuclotron and collider in the NICA project. The main attention is paid to the matching of the extraction beam systems. The proposed approach allows providing qualitative and quantitative analysis of the impact of various factors of the corresponding control systems.
	Slides WECAMH01 [1.912 MB]
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WEYMH01	Development of MHF Conception at ITEP	proton, ion, experiment, linac	73
	N.N. Alexeev, A. Andreev, A. Kolomiets, V.I. Nikolaev, Yu.A. Satov, A. Shumshurov, V. Stolbunov, A. Zarubin ITEP, Moscow, Russia
	The conception of Multi-purpose Hadrons Facility (MHF) began to be discussed at ITEP in the late ~2010s when ITEP-TWAC facility was intensively exploited for physical and applied research with the use of accelerated proton and ion beams varied in a wide range of operating parameters. Technological developments have continued to expand the scope of beams utilizing in diverse fields of science, medicine, industry and education. The ITEP-TWAC facility was decommissioned in 2012 and continues to remain in a state of waiting for reasonable decision on its recovery and upgrade, but conception of MHF is alive and aims at creating a technological base of particle accelerator technique intended for generation of proton and ion beams, covering the needs of many areas of fundamental, applied and technological research and industrial applications, represents a significant scientific and practical interest for modern and future engineering community. Created MHF environment should obviously be friendly and flexible for collaboration with industry, universities, and other national and foreign labs to provide continuous intelligent and technological progress. The key components of the MHF mission and vision are presented.
	Slides WEYMH01 [5.810 MB]
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WEZMH02	Radiocarbon analysis of different samples at BINP AMS	ion, ion-source, vacuum, detector	95
	S. Rastigeev, A.R. Frolov, A.D. Goncharov, V. Klyuev, E.S. Konstantinov, L.A. Kutnykova, V.V. Parkhomchuk, N. Petrischev, A.V. Petrozhitskii BINP SB RAS, Novosibirsk, Russia
	The accelerator mass spectrometer (AMS) created at BINP is used for biomedical, archaeological and other applications. Present status and experimental results are described.
	Slides WEZMH02 [2.944 MB]
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THCAMH03	The Target Development For Medical Radionuclides 67Cu and 82Sr Production	target, proton, diagnostics, cyclotron	111
	S.A. Krotov, A.E. Barzakh, L.Kh. Batist, D.V. Fedorov, V.S. Ivanov, P.L. Molkanov, F.V. Moroz, S.Yu. Orlov, V.N. Panteleev, Yu.M. Volkov PNPI, Gatchina, Leningrad District, Russia
	A high current cyclotron C-80 with the energy of extracted proton beam of 40-80 MeV and the current up to 200 mkA has been constructed at PNPI (Petersburg Nuclear Physics Institute). Presently the work is in progress for external proton beam adjustment. The main goal of the C-80 is production of medical radionuclides for diagnostics and therapy. This cyclotron is also intended for treatment of ophthalmologic diseases by irradiation of malignant eye formation. At the beam of C-80 the radioisotope complex RIC-80 (Radioactive Isotopes at cyclotron C-80), has been designed, which ensures obtaining sources of a high activity practically for the whole list of medical radionuclides produced at accelerators. An essential peculiarity of the RIC-80 is the use of the mass-separator that will allow the production of separated high purity radionuclides very important for medicine purposes. Presently different target prototypes for the production of radionuclides at the RIC-80 are being developed. The results of different target material tests for production of radioisotopes 67Cu, 82Sr, 223, 224Ra and others have been presented.
	Slides THCAMH03 [4.686 MB]
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THYMH02	Hadron Therapy Research and Applications at JINR	cyclotron, proton, acceleration, ion	123
	G. Shirkov, S. Gurskiy, O. Karamyshev, G.A. Karamysheva, N.A. Morozov, E.V. Samsonov, S.G. Shirkov, G.V. Trubnikov JINR, Dubna, Moscow Region, Russia D.V. Popov JINR/DLNP, Dubna, Moscow region, Russia
	JINR has the unique experience in cancer treatment with proton beam during about 50 years. In 2005 the collaboration with IBA (Belgium) was established. During these years the technical design of the first carbon superconducting cyclotron C400 was successfully created, the construction of serial proton cyclotron C230 was significantly improved and the fist modernized cyclotron C235 was assembled, debugged and put in the test operation in Dubna in 2013. This C235 will be used soon in the first Russian medical center with proton therapy in Dimitrovgrad. In 2015 the joint project with ASIPP (Hefei, China) on design and construction of superconducting proton cyclotron SC200 was started. Two samples of SC200 should be created according to the Collaboration Agreement between JINR and ASIPP. One will be used for proton therapy in Hefei and the second one should be used to replace the synchrocyclotron Phasotron in investigations on proton therapy at JINR.
	Slides THYMH02 [29.140 MB]
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TUCASH03	High Efficiency Stripping Extraction on 80 MeV H-minus Isochronous Cyclotron in PNPI	cyclotron, ion, H-minus, acceleration	176
	S.A. Artamonov, A.N. Chernov, E.M. Ivanov, G.A. Riabov, V.A. Tonkikh PNPI, Gatchina, Leningrad District, Russia
	H-minus cyclotron has the advantage that high intensity internal beam can be extracted from the acceleration chamber with practically 100% efficiency by transformation H-minus ions into H-plus ion by using thin foil. The extraction system is consists from the probe with stripping foil, extraction window in the vacuum chamber and two correct magnets to match the extracted beam with beam transport line. The beam optics calculations in the measured magnetic field make it possible to find optimal relative position of the extraction system elements as well the parameters of the extracted beam with energy 40 - 80 MeV. At present time the beam is extracted from the chamber with efficiency 100 % and there is good agreement with the optic calculations.
	Slides TUCASH03 [5.581 MB]
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WEPSB002	First Experimental Demonstration of the Extraction of Low Energy Beams from the ESR to the CRYRING@ESR	ion, septum, experiment, dipole	351
	S.A. Litvinov, Z. Andelkovic, D. Beck, A. Bräuning-Demian, S. Fedotova, W. Geithner, F. Herfurth, R. Hess, C.M. Kleffner, I. Kraus, M. Lestinsky, F. Nolden, M. Steck, G. Vorobyev GSI, Darmstadt, Germany
	The CRYRING@ESR facility will provide the unique possibility for studying properties of highly charged cooled stable and short-lived ions stored at low energy for atomic and nuclear research within the FAIR project. Heavy ion beams will be stored, cooled and decelerated to energies between 10 and 4 MeV/u in the ESR and then delivered to the CRYRING@ESR. There is no dedicated kicker magnet for the fast extraction in this direction. However, a specially developed distorted closed orbit of the beam stored in the ESR in combination with the injection kicker has been suggested for the extraction and experimentally verified in 2014. In the first experiment the ion beam was extracted and transported over a distance of 20 m towards the CRYRING@ESR. In the 2016 machine development run the heavy ion beam was successfully extracted from the ESR and delivered to the first fluorescent screen inside CRYRING@ESR for the first time. Detailed ion-optical simulations as well as the experimental results will be discussed.
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WEPSB028	Computer Simulation of the Slow Beam Extraction From Nuclotron	sextupole, dipole, resonance, lattice	422
	A.D. Kovalenko, I.L. Avvakumova JINR/VBLHEP, Moscow, Russia A.D. Kovalenko, V.A. Mikhaylov JINR, Dubna, Moscow Region, Russia
	The results of modelling of ion's motion during beam slow extraction from Nuclotron at the energy 6 GeV/Amu are shown in this work. Influence of sextupole field component of dipole magnets and fringe fields of Lambertson's magnets on the characteristics of extracted beam was analyzed. The calculations have been done via MadX. * Issinsky I., Mikhaylov V., Shchepunov V. Nuclotron lattice. Proceedings of EPAC 1990, p.458. Kovalenko A. Nuclotron: status and future. Proceedings of EPAC 2000, p.554. * Agapov N. et al. Slow beam extraction from Nuclotron. Proceedings of the 2001 Particle Accelerator Conference, p.1646.
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WEPSB046	A Cyclotron Complex for Acceleration of Carbon Ions	cyclotron, injection, ion, acceleration	467
	V.L. Smirnov, S.B. Vorozhtsov JINR, Dubna, Moscow Region, Russia
	An accelerating complex for hadron therapy is proposed. Facility consists of two superconducting cyclotrons and is aimed to produce beams of 12C⁶⁺ ions with energy of 400 MeV/nucleon. Accelerator-injector is a compact 70 MeV/nucleon cyclotron. Main machine is separated sector cyclotron consisting of six magnets. Basic features of the main cyclotron are high magnetic field, compact size, and feasible design of a magnetic system. The advantages of the dual cyclotron design are typical of cyclotron-based solutions. The first design studies of the sector magnet of the main cyclotron show that the beam dynamics is acceptable with the obtained magnetic field. Due to its relatively compact size (outer diameter of 12 m) the complex can be an alternative to synchrotrons. Design study of the main cyclotron is described here.
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WEPSB068	Radiation From Open-Ended Flanged Waveguide With Dielectric Loading	simulation, vacuum, radiation, electron	515
	V.V. Vorobev, S.N. Galyamin, A.A. Grigoreva, A.V. Tyukhtin Saint Petersburg State University, Saint Petersburg, Russia
	Funding: The work is supported by the Grant of the President of Russian Federation (No. 6765.2015.2) and the Grants from Russian Foundation for Basic Research (No. 15-32-20985, 15-02-03913). Terahertz radiation is considered as a promising tool for a number of applications. One possible way to emit THz waves is to pass short electron bunch through a waveguide structure loaded with dielectric. Previously we considered the extraction of radiation from the open end of the waveguide with dielectric loading in both approximate and rigorous formulation. We also developed a rigorous approach based on mode-matching technique and modified residue-calculus technique for the case when the waveguide with dielectric is co-axial with infinite waveguide with greater radius. The study presented is devoted to the case when the dielectric loaded waveguide has a flange and enclosed into another waveguide with a greater radius. The case of the flanged waveguide in the unbounded vacuum space can be described as the limiting case of the problem under consideration. We perform analytical calculation (based on mode-matching technique and modified residue-calculus technique) and direct numerical simulation.
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THPSC008	Magnetic Systems for Beam Transport at Extraction Channels of ILU Accelerators	electron, focusing, radiation, dipole	556
	V.V. Bezuglov, A.A. Bryazgin, B.L. Faktorovich, E.N. Kokin, V.E. Nekhaev, A.D. Panfilov, V.M. Radchenko, E.A. Shtarklev, V.O. Tkachenko, A. YU. Vlasov, L.A. Voronin BINP SB RAS, Novosibirsk, Russia
	This paper is devoted to magnetic systems for beam transport at extraction channels of electron industrial accelerators of the ILU type. The extraction systems meant for energy of the accelerated electrons up to 10 MeV and beam power up to 100 kW are described. The analysis of their work subject to the processes connected with the induced eddy currents in metal walls of beam scanning chambers is made; special attention is paid to forming of the dose field in a radiation zone. In paper the magnetic system for bending of the nonmonochromatic beams is offered to application. The essence of the described device consists in application of two identical magnetic mirrors in which distribution of magnetic field on depth is formed so that natural rise of magnetic field intensity on an entrance to a mirror is followed by decrease of this field under a certain law. In the issue of impact on charged particles of forces arising in cylindrical lenses of each mirror is possible to compensate angular divergence of strongly nonmonochromatic beams in gaps of magnetic mirrors and to receive after bending a beam with parameters close to phase characteristics of an input beam. The design procedure of such bending device and a general view of installation for experimental check of the offered bending system on electron beam are given in this paper.
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THPSC013	The Nonsymmetrical Variant of the Nonferromagnetic Extraction Kicker Magnet of the NICA Booster	kicker, booster, acceleration, injection	566
	V. Aleksandrov, A.A. Fateev, A. Tuzikov JINR, Dubna, Moscow Region, Russia
	Development and creation of the NICA acceleration complex are continued at JINR (Dubna). One of the main facilities of the complex is the Booster in which preliminary acceleration and cooling of an ion beam is performed. Further acceleration is fulfilled in the circular accelerator NUCLOTRON. The beam transfer from the Booster into the NUCLOTRON is provided by means of the fast extraction system and one of its central elements is the kicker magnet. For the beam deflecting into the extraction septum-magnet it is supposed to use the nonferrous kicker magnet consisting of two couples of conductors. Recent changes made in configuration of the Booster extraction section demand decrease of the kicker magnet length that leads to change of the beam extraction scheme. This report is devoted to the choice of the alternative design of the magnet (the nonsymmetrical variant).
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THPSC031	Power Supplies for IHEP Negative Hydrogen Ions Source	power-supply, ion, ion-source, H-minus	612
	B.A. Frolov IHEP, Moscow Region, Russia V.S. Klenov, V. Zubets RAS/INR, Moscow, Russia
	The source of negative hydrogen ions is constructed at IHEP for the implementation of multiturn charge-exchange injection to increase the intensity of IHEP buster. Surface-plasma ion souce (SPS) with Penning discharge is selected as a source of H-minus ions. A set of power supplies for SPS, which includes the extraction voltage power supply, the discharge power supplies, the hydrogen gas pulse valve power supply, cesium oven and cesium storage device temperature controllers, was designed, constructed and tested on the equivalent loads. This set of power supplies will allows for commissioning and testing the ion source with the beam extraction energy up to 25 keV and repetition rate 25 Hz.
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Paper

Title

Other Keywords

Page

TUZMH01

Status of U-70

proton, target, flattop, acceleration

44

S.V. Ivanov
IHEP, Moscow Region, Russia

Funding: National Research Centre "Kurchatov Institute"
The report overviews present status of the Accelerator Complex U70 at IHEP of NRC "Kurchatov Institute". The emphasis is put on the recent activity and upgrades implemented since the previous conference RuPAC-2014, in a run-by-run chronological ordering.
* on behalf of the U70 staff

Slides TUZMH01 [6.858 MB]

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WECAMH01

Some Problems of the Beam Extraction from Circular Accelerators

controls, injection, booster, resonance

61

S.N. Andrianov
St. Petersburg State University, St. Petersburg, Russia
N.S. Edamenko
Saint Petersburg State University, Saint Petersburg, Russia

In this article some problems of optimizing the output beam of particles from the circular accelerator are discussed. In particular, we consider some problems of matching the booster, Nuclotron and collider in the NICA project. The main attention is paid to the matching of the extraction beam systems. The proposed approach allows providing qualitative and quantitative analysis of the impact of various factors of the corresponding control systems.

Slides WECAMH01 [1.912 MB]

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WEYMH01

Development of MHF Conception at ITEP

proton, ion, experiment, linac

73

N.N. Alexeev, A. Andreev, A. Kolomiets, V.I. Nikolaev, Yu.A. Satov, A. Shumshurov, V. Stolbunov, A. Zarubin
ITEP, Moscow, Russia

The conception of Multi-purpose Hadrons Facility (MHF) began to be discussed at ITEP in the late ~2010s when ITEP-TWAC facility was intensively exploited for physical and applied research with the use of accelerated proton and ion beams varied in a wide range of operating parameters. Technological developments have continued to expand the scope of beams utilizing in diverse fields of science, medicine, industry and education. The ITEP-TWAC facility was decommissioned in 2012 and continues to remain in a state of waiting for reasonable decision on its recovery and upgrade, but conception of MHF is alive and aims at creating a technological base of particle accelerator technique intended for generation of proton and ion beams, covering the needs of many areas of fundamental, applied and technological research and industrial applications, represents a significant scientific and practical interest for modern and future engineering community. Created MHF environment should obviously be friendly and flexible for collaboration with industry, universities, and other national and foreign labs to provide continuous intelligent and technological progress. The key components of the MHF mission and vision are presented.

Slides WEYMH01 [5.810 MB]

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WEZMH02

Radiocarbon analysis of different samples at BINP AMS

ion, ion-source, vacuum, detector

95

S. Rastigeev, A.R. Frolov, A.D. Goncharov, V. Klyuev, E.S. Konstantinov, L.A. Kutnykova, V.V. Parkhomchuk, N. Petrischev, A.V. Petrozhitskii
BINP SB RAS, Novosibirsk, Russia

The accelerator mass spectrometer (AMS) created at BINP is used for biomedical, archaeological and other applications. Present status and experimental results are described.

Slides WEZMH02 [2.944 MB]

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THCAMH03

The Target Development For Medical Radionuclides 67Cu and 82Sr Production

target, proton, diagnostics, cyclotron

111

S.A. Krotov, A.E. Barzakh, L.Kh. Batist, D.V. Fedorov, V.S. Ivanov, P.L. Molkanov, F.V. Moroz, S.Yu. Orlov, V.N. Panteleev, Yu.M. Volkov
PNPI, Gatchina, Leningrad District, Russia

A high current cyclotron C-80 with the energy of extracted proton beam of 40-80 MeV and the current up to 200 mkA has been constructed at PNPI (Petersburg Nuclear Physics Institute). Presently the work is in progress for external proton beam adjustment. The main goal of the C-80 is production of medical radionuclides for diagnostics and therapy. This cyclotron is also intended for treatment of ophthalmologic diseases by irradiation of malignant eye formation. At the beam of C-80 the radioisotope complex RIC-80 (Radioactive Isotopes at cyclotron C-80), has been designed, which ensures obtaining sources of a high activity practically for the whole list of medical radionuclides produced at accelerators. An essential peculiarity of the RIC-80 is the use of the mass-separator that will allow the production of separated high purity radionuclides very important for medicine purposes. Presently different target prototypes for the production of radionuclides at the RIC-80 are being developed. The results of different target material tests for production of radioisotopes 67Cu, 82Sr, 223, 224Ra and others have been presented.

Slides THCAMH03 [4.686 MB]

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THYMH02

Hadron Therapy Research and Applications at JINR

cyclotron, proton, acceleration, ion

123

G. Shirkov, S. Gurskiy, O. Karamyshev, G.A. Karamysheva, N.A. Morozov, E.V. Samsonov, S.G. Shirkov, G.V. Trubnikov
JINR, Dubna, Moscow Region, Russia
D.V. Popov
JINR/DLNP, Dubna, Moscow region, Russia

JINR has the unique experience in cancer treatment with proton beam during about 50 years. In 2005 the collaboration with IBA (Belgium) was established. During these years the technical design of the first carbon superconducting cyclotron C400 was successfully created, the construction of serial proton cyclotron C230 was significantly improved and the fist modernized cyclotron C235 was assembled, debugged and put in the test operation in Dubna in 2013. This C235 will be used soon in the first Russian medical center with proton therapy in Dimitrovgrad. In 2015 the joint project with ASIPP (Hefei, China) on design and construction of superconducting proton cyclotron SC200 was started. Two samples of SC200 should be created according to the Collaboration Agreement between JINR and ASIPP. One will be used for proton therapy in Hefei and the second one should be used to replace the synchrocyclotron Phasotron in investigations on proton therapy at JINR.

Slides THYMH02 [29.140 MB]

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TUCASH03

High Efficiency Stripping Extraction on 80 MeV H-minus Isochronous Cyclotron in PNPI

cyclotron, ion, H-minus, acceleration

176

S.A. Artamonov, A.N. Chernov, E.M. Ivanov, G.A. Riabov, V.A. Tonkikh
PNPI, Gatchina, Leningrad District, Russia

H-minus cyclotron has the advantage that high intensity internal beam can be extracted from the acceleration chamber with practically 100% efficiency by transformation H-minus ions into H-plus ion by using thin foil. The extraction system is consists from the probe with stripping foil, extraction window in the vacuum chamber and two correct magnets to match the extracted beam with beam transport line. The beam optics calculations in the measured magnetic field make it possible to find optimal relative position of the extraction system elements as well the parameters of the extracted beam with energy 40 - 80 MeV. At present time the beam is extracted from the chamber with efficiency 100 % and there is good agreement with the optic calculations.

Slides TUCASH03 [5.581 MB]

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WEPSB002

First Experimental Demonstration of the Extraction of Low Energy Beams from the ESR to the CRYRING@ESR

ion, septum, experiment, dipole

351

S.A. Litvinov, Z. Andelkovic, D. Beck, A. Bräuning-Demian, S. Fedotova, W. Geithner, F. Herfurth, R. Hess, C.M. Kleffner, I. Kraus, M. Lestinsky, F. Nolden, M. Steck, G. Vorobyev
GSI, Darmstadt, Germany

The CRYRING@ESR facility will provide the unique possibility for studying properties of highly charged cooled stable and short-lived ions stored at low energy for atomic and nuclear research within the FAIR project. Heavy ion beams will be stored, cooled and decelerated to energies between 10 and 4 MeV/u in the ESR and then delivered to the CRYRING@ESR. There is no dedicated kicker magnet for the fast extraction in this direction. However, a specially developed distorted closed orbit of the beam stored in the ESR in combination with the injection kicker has been suggested for the extraction and experimentally verified in 2014. In the first experiment the ion beam was extracted and transported over a distance of 20 m towards the CRYRING@ESR. In the 2016 machine development run the heavy ion beam was successfully extracted from the ESR and delivered to the first fluorescent screen inside CRYRING@ESR for the first time. Detailed ion-optical simulations as well as the experimental results will be discussed.

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WEPSB028

Computer Simulation of the Slow Beam Extraction From Nuclotron

sextupole, dipole, resonance, lattice

422

A.D. Kovalenko, I.L. Avvakumova
JINR/VBLHEP, Moscow, Russia
A.D. Kovalenko, V.A. Mikhaylov
JINR, Dubna, Moscow Region, Russia

The results of modelling of ion's motion during beam slow extraction from Nuclotron at the energy 6 GeV/Amu are shown in this work. Influence of sextupole field component of dipole magnets and fringe fields of Lambertson's magnets on the characteristics of extracted beam was analyzed. The calculations have been done via MadX.
* Issinsky I., Mikhaylov V., Shchepunov V. Nuclotron lattice. Proceedings of EPAC 1990, p.458.
** Kovalenko A. Nuclotron: status and future. Proceedings of EPAC 2000, p.554.
*** Agapov N. et al. Slow beam extraction from Nuclotron. Proceedings of the 2001 Particle Accelerator Conference, p.1646.

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WEPSB046

A Cyclotron Complex for Acceleration of Carbon Ions

cyclotron, injection, ion, acceleration

467

V.L. Smirnov, S.B. Vorozhtsov
JINR, Dubna, Moscow Region, Russia

An accelerating complex for hadron therapy is proposed. Facility consists of two superconducting cyclotrons and is aimed to produce beams of 12C⁶⁺ ions with energy of 400 MeV/nucleon. Accelerator-injector is a compact 70 MeV/nucleon cyclotron. Main machine is separated sector cyclotron consisting of six magnets. Basic features of the main cyclotron are high magnetic field, compact size, and feasible design of a magnetic system. The advantages of the dual cyclotron design are typical of cyclotron-based solutions. The first design studies of the sector magnet of the main cyclotron show that the beam dynamics is acceptable with the obtained magnetic field. Due to its relatively compact size (outer diameter of 12 m) the complex can be an alternative to synchrotrons. Design study of the main cyclotron is described here.

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WEPSB068

Radiation From Open-Ended Flanged Waveguide With Dielectric Loading

simulation, vacuum, radiation, electron

515

V.V. Vorobev, S.N. Galyamin, A.A. Grigoreva, A.V. Tyukhtin
Saint Petersburg State University, Saint Petersburg, Russia

Funding: The work is supported by the Grant of the President of Russian Federation (No. 6765.2015.2) and the Grants from Russian Foundation for Basic Research (No. 15-32-20985, 15-02-03913).
Terahertz radiation is considered as a promising tool for a number of applications. One possible way to emit THz waves is to pass short electron bunch through a waveguide structure loaded with dielectric. Previously we considered the extraction of radiation from the open end of the waveguide with dielectric loading in both approximate and rigorous formulation. We also developed a rigorous approach based on mode-matching technique and modified residue-calculus technique for the case when the waveguide with dielectric is co-axial with infinite waveguide with greater radius. The study presented is devoted to the case when the dielectric loaded waveguide has a flange and enclosed into another waveguide with a greater radius. The case of the flanged waveguide in the unbounded vacuum space can be described as the limiting case of the problem under consideration. We perform analytical calculation (based on mode-matching technique and modified residue-calculus technique) and direct numerical simulation.

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THPSC008

Magnetic Systems for Beam Transport at Extraction Channels of ILU Accelerators

electron, focusing, radiation, dipole

556

V.V. Bezuglov, A.A. Bryazgin, B.L. Faktorovich, E.N. Kokin, V.E. Nekhaev, A.D. Panfilov, V.M. Radchenko, E.A. Shtarklev, V.O. Tkachenko, A. YU. Vlasov, L.A. Voronin
BINP SB RAS, Novosibirsk, Russia

This paper is devoted to magnetic systems for beam transport at extraction channels of electron industrial accelerators of the ILU type. The extraction systems meant for energy of the accelerated electrons up to 10 MeV and beam power up to 100 kW are described. The analysis of their work subject to the processes connected with the induced eddy currents in metal walls of beam scanning chambers is made; special attention is paid to forming of the dose field in a radiation zone. In paper the magnetic system for bending of the nonmonochromatic beams is offered to application. The essence of the described device consists in application of two identical magnetic mirrors in which distribution of magnetic field on depth is formed so that natural rise of magnetic field intensity on an entrance to a mirror is followed by decrease of this field under a certain law. In the issue of impact on charged particles of forces arising in cylindrical lenses of each mirror is possible to compensate angular divergence of strongly nonmonochromatic beams in gaps of magnetic mirrors and to receive after bending a beam with parameters close to phase characteristics of an input beam. The design procedure of such bending device and a general view of installation for experimental check of the offered bending system on electron beam are given in this paper.

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THPSC013

The Nonsymmetrical Variant of the Nonferromagnetic Extraction Kicker Magnet of the NICA Booster

kicker, booster, acceleration, injection

566

V. Aleksandrov, A.A. Fateev, A. Tuzikov
JINR, Dubna, Moscow Region, Russia

Development and creation of the NICA acceleration complex are continued at JINR (Dubna). One of the main facilities of the complex is the Booster in which preliminary acceleration and cooling of an ion beam is performed. Further acceleration is fulfilled in the circular accelerator NUCLOTRON. The beam transfer from the Booster into the NUCLOTRON is provided by means of the fast extraction system and one of its central elements is the kicker magnet. For the beam deflecting into the extraction septum-magnet it is supposed to use the nonferrous kicker magnet consisting of two couples of conductors. Recent changes made in configuration of the Booster extraction section demand decrease of the kicker magnet length that leads to change of the beam extraction scheme. This report is devoted to the choice of the alternative design of the magnet (the nonsymmetrical variant).

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THPSC031

Power Supplies for IHEP Negative Hydrogen Ions Source

power-supply, ion, ion-source, H-minus

612

B.A. Frolov
IHEP, Moscow Region, Russia
V.S. Klenov, V. Zubets
RAS/INR, Moscow, Russia

The source of negative hydrogen ions is constructed at IHEP for the implementation of multiturn charge-exchange injection to increase the intensity of IHEP buster. Surface-plasma ion souce (SPS) with Penning discharge is selected as a source of H-minus ions. A set of power supplies for SPS, which includes the extraction voltage power supply, the discharge power supplies, the hydrogen gas pulse valve power supply, cesium oven and cesium storage device temperature controllers, was designed, constructed and tested on the equivalent loads. This set of power supplies will allows for commissioning and testing the ion source with the beam extraction energy up to 25 keV and repetition rate 25 Hz.

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