RuPAC2016 - List of Keywords (rfq)

Paper	Title	Other Keywords	Page
TUZMH03	Status of IFMIF-EVEDA RFQ	linac, vacuum, controls, operation	51
	E. Fagotti, L. Antoniazzi, A. Baldo, A. Battistello, P. Bottin, L. Ferrari, M.G. Giacchini, F. Grespan, M. Montis, A. Pisent, D. Scarpa INFN/LNL, Legnaro (PD), Italy D. Agguiaro, A.G. Colombo, A. Pepato, L. Ramina INFN- Sez. di Padova, Padova, Italy F. Borotto Dalla Vecchia, G. Dughera, G. Giraudo, E.A. Macri, P. Mereu, R. Panero INFN-Torino, Torino, Italy K. Kondo, T. Shinya QST, Aomori, Japan F. Scantamburlo IFMIF/EVEDA, Rokkasho, Japan
	All IFMIF - EVEDA RFQ modules were completed in summer 2015. In the previous year the last three modules were RF tested at LNL at nominal power up to cw operation. At the beginning of this year all the modules were assembled in three 3.3 m long super-modules structures that were shipped to Japan. RFQ was then installed and tuned with provisional aluminum tuners and end plates to nominal frequency and field distribution. Replacement of movable aluminum components with copper fixed ones increased cavity quality value not affecting field flatness and frequency.
	Slides TUZMH03 [18.884 MB]
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WECAMH05	Optimization and Simuations of Beam Dynamics in APF Accelerators	linac, simulation, acceleration, ion	70
	D.A. Ovsyannikov, V.V. Altsybeyev Saint Petersburg State University, Saint Petersburg, Russia
	Design problem of APF accelerator for ensurance enough high quality of output beam is considered. As we know, this problem is not easy because we have to achieve stability of longitudinal and transversal motions simultaneously. One of the first significant results in this subject were obtained by V. V. Kushin. In this work the problems of optimizations of intense ion beam are considered. The optimazation approaches for some beam characteristics improving (acceleration and transmission rates) are considered. Obtained results are confirmed by particle in cell simulations.
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FRCAMH02	Commissioning of New Light Ion RFQ Linac and First Nuclotron Run with New Injector	ion, linac, ion-source, vacuum	153
	A.V. Butenko, A.M. Bazanov, D.E. Donets, A.D. Kovalenko, K.A. Levterov, D.A. Lyuosev, A.A. Martynov, V.V. Mialkovskiy, D.O. Ponkin, R.G. Pushkar, V.V. Seleznev, K.V. Shevchenko, I.V. Shirikov, A.O. Sidorin JINR/VBLHEP, Moscow, Russia S.V. Barabin, A.V. Kozlov, G. Kropachev, T. Kulevoy, V.G. Kuzmichev ITEP, Moscow, Russia A. Belov RAS/INR, Moscow, Russia V.V. Fimushkin, B.V. Golovenskiy, A. Govorov, V. Kobets, V.A. Monchinsky, A.V. Smirnov, G.V. Trubnikov JINR, Dubna, Moscow Region, Russia S.M. Polozov MEPhI, Moscow, Russia
	The new accelerator complex Nuclotron-based Ion Collider fAcility (NICA) is now under development and construction at JINR, Dubna. This complex is assumed to operate using two injectors: the Alvarez-type linac LU-20 as injector of light ions, polarized protons and deuterons and a new linac HILAc - injector of heavy ions beams. Old HV for-injector of the LU-20, which operated from 1974, is replaced by the new RFQ accelerator, which was commissioned in spring 2016. The first Nuclotron technological run with new fore-injector was performed in June 2016. Beams of D⁺ and H²⁺ were successfully injected and accelerated in the Nuclotron ring. Main results of the RFQ commissioning and the first Nuclotron run with new for-injector is discussed in this paper.
	Slides FRCAMH02 [30.140 MB]
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FRCAMH03	Commissioning of the New Heavy Ion Linac at the NICA Project	ion, linac, ion-source, heavy-ion	156
	A.V. Butenko, A.M. Bazanov, D.E. Donets, A.D. Kovalenko, K.A. Levterov, D.A. Lyuosev, A.A. Martynov, V.V. Mialkovskiy, V.V. Seleznev, K.V. Shevchenko, I.V. Shirikov, A.O. Sidorin JINR/VBLHEP, Moscow, Russia B.V. Golovenskiy, A. Govorov, V. Kobets, V.A. Monchinsky, A.V. Smirnov, E. Syresin, G.V. Trubnikov JINR, Dubna, Moscow Region, Russia H. Hoeltermann, H. Podlech, U. Ratzinger, A. Schempp BEVATECH, Frankfurt, Germany D.A. Liakin ITEP, Moscow, Russia
	The new accelerator complex Nuclotron-based Ion Collider fAcility (NICA) is now under development and construction at JINR, Dubna. This complex is assumed to operate using two injectors: modernized old Alvarez-type linac LU-20 as injector of light polarized ions and a new Heavy Ion Linear Accelerator HILAc - injector of heavy ions beams. The new heavy ion linac accelerate ions with q/A values above 0.16 to 3.2 MeV/u is under commissioning. The main components are 4-Rod-RFQ and two IH - drift tube cavities is operated at 100.6 MHz. Main results of the HILAc commissioning with carbon beam from the laser ion source are discussed.
	Slides FRCAMH03 [14.452 MB]
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TUPSA013	Investigation of a Second Order Method of RFQ Channel Optimization	controls, focusing, acceleration, software	240
	O.I. Drivotin St. Petersburg State University, St. Petersburg, Russia D.A. Starikov Saint Petersburg State University, Saint Petersburg, Russia
	This report is devoted to a numerical method of solution of the RFQ structure optimization problem. The problem is considered as a control theory problem. Control functions representing geometry of the electrodes and a quality functional describing the beam are introduced. To solve the problem numerically these control functions are parametrized. The presented method is based on the computation of the derivatives of the first and the second order of the quality functional on the parameters. Results of investigation of efficiency of the method relatively to a method including computation of the derivatives only of the first order are presented.
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TUPSA014	A Simple Model for Electromagnetic Field in RFQ Channel	electromagnetic-fields, focusing, real-time, software	244
	O.I. Drivotin, I.T. Dulatov St. Petersburg State University, St. Petersburg, Russia
	Numerical solution of the RFQ structure optimization problem requires a great amount of computation. Each consecutive step of the numerical optimization includes modification of geometry of the channel and computation of electromagnetic field for modified geometry. Therefore, a simple model describing the field in the channel is needed for the optimization. Such model is proposed in this report. It differs from the commonly used traditional model of the field, which can be applied when profiles of the vanes are described by the harmonic functions of the longitudinal coordinate. Our model is more general and can be applied for arbitrary profiles of the vanes.
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TUPSA015	Acceleration of Deuterons and Protons in Single RFQ Strucrure	ion, acceleration, focusing, proton	247
	A.D. Ovsyannikov, D.A. Ovsyannikov, Y.A. Svistunov Saint Petersburg State University, Saint Petersburg, Russia A.P. Durkin MRTI RAS, Moscow, Russia
	Some aspects of acceleration of protons and deuterons in single RFQ are considered. Usually vane voltage for protons must be two times less than vane voltage for deuterons. If space charge is significant vane voltage for protons can be too small to reach high efficiency of bunching and focusing of protons beam. It is shown that a rising of voltage up to nominal value for deuterons leads to increasing of capture and transmission for protons. Another problem is concerned with a choice of radial matching section parameters, which are optimal for both beams (proton and deuterons) simultaneously. Methods of optimization are discussed. Analysis of particles dynamics is illustrated by calculation's results.
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TUPSA026	Beam Dynamics Study for the New CW RFQ	linac, simulation, proton, space-charge	267
	S.M. Polozov, W.A. Barth, T. Kulevoy, Y. Lozeev, S. Yaramyshev MEPhI, Moscow, Russia W.A. Barth, F.D. Dziuba, S. Yaramyshev GSI, Darmstadt, Germany W.A. Barth, F.D. Dziuba HIM, Mainz, Germany T. Kulevoy, S.M. Polozov ITEP, Moscow, Russia
	A compact "university scale" CW research proton accelerator, as well as driver linac with three branches of experimental beam lines, delivering beam energy of 3, 10 and 30 MeV for dedicated experiments, are recently under development in Russia. A proposed front-end system of both linacs comprises a 2 MeV CW RFQ, which is foreseen to bunch and accelerate up to 10 mA proton beam. The RFQ design is presented. The beam dynamics simulation results, obtained by means of different simulation code, are discussed and compared.
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TUPSA038	The RF Power System for RFQ-Injector of Linac-20	ion, DTL, high-voltage, acceleration	297
	V.G. Kuzmichev, A.V. Kozlov, T. Kulevoy, S.M. Polozov, D.N. Selesnev, Yu. Stasevich ITEP, Moscow, Russia A.V. Butenko JINR, Dubna, Moscow Region, Russia T. Kulevoy, S.M. Polozov MEPhI, Moscow, Russia
	In the frame of the Nuclotron-M project the electrostatic injector of LU-20 is replaced by a RFQ accelerator, which has been developed in ITEP. The construction of 400 kW, 145 MHz RF system for RFQ-injector are described. Pa-rameters and test results of the RF power system operated on the resistive load and on RFQ during ion beam accele-ration are presented
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WEPSB005	On the Minimax Problem of Beam Dynamics Optimization	controls, acceleration, linac, focusing	360
	M.A. Mizintseva, D.A. Ovsyannikov St. Petersburg State University, St. Petersburg, Russia
	The problem of simultaneous optimization of the ensemble of trajectories and some selected trajectory arises in the research of the charged particle beam dynamics. The present work suggests the use of a smooth functional for the evaluation of the selected trajectories and a minimax functional for the evaluation of the dynamics of the beam of trajectories. A combination of those functionals is considered.
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WEPSB012	On The Beam Dynamics Simulation In The Injection System	injection, simulation, software, controls	382
	A.D. Ovsyannikov, S.A. Kozynchenko, V.A. Kozynchenko Saint Petersburg State University, Saint Petersburg, Russia
	When developing a particle accelerator for generating the high-precision beams, the injection system design is of importance, because it largely determines the output characteristics of the beam. At the present paper we consider the injection systems consisting of electrodes with given potentials. The design of such systems requires carrying out simulation of beam dynamics in the electrostatic fields. For external field simulation we use the new approach, proposed by A.D. Ovsyannikov, which is based on analytical approximations, or finite difference method, taking into account the real geometry of the injection system. The software designed for solving the problems of beam dynamics simulation and optimization in the injection system for non-relativistic beams has been developed. Both beam dynamics and electric field simulations in the injection system, that use analytical approach and finite difference method have been made and the results presented in this paper.
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WEPSB073	Design Study of the Proton Linac for Radiopharmaceuticals Production	DTL, linac, cavity, focusing	524
	G. Kropachev, A.I. Balabin, T. Kulevoy, D.N. Selesnev, A. Sitnikov ITEP, Moscow, Russia T. Kulevoy MEPhI, Moscow, Russia
	The 8 MeV 200 MHz linac for acceleration of quasi cw 0.2 mA proton beam is under development at ITEP. The linac is designed for radiopharmaceuticals production which will be used in the Positron-Emission Tomography. The linac includes RFQ and DTL sections with 6D-beam matching between them. The DTL section has modular structure and consists of separated individually phased IH-cavities with beam focusing by permanent magnet quadrupoles located between the cavities. This DTL structure provides linac compactness and enables its tuning and commissioning cavity by cavity. Results of beam dynamic simulation and electrodynamics characteristics of linac cavities are presented.
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Paper

Title

Other Keywords

Page

TUZMH03

Status of IFMIF-EVEDA RFQ

linac, vacuum, controls, operation

51

E. Fagotti, L. Antoniazzi, A. Baldo, A. Battistello, P. Bottin, L. Ferrari, M.G. Giacchini, F. Grespan, M. Montis, A. Pisent, D. Scarpa
INFN/LNL, Legnaro (PD), Italy
D. Agguiaro, A.G. Colombo, A. Pepato, L. Ramina
INFN- Sez. di Padova, Padova, Italy
F. Borotto Dalla Vecchia, G. Dughera, G. Giraudo, E.A. Macri, P. Mereu, R. Panero
INFN-Torino, Torino, Italy
K. Kondo, T. Shinya
QST, Aomori, Japan
F. Scantamburlo
IFMIF/EVEDA, Rokkasho, Japan

All IFMIF - EVEDA RFQ modules were completed in summer 2015. In the previous year the last three modules were RF tested at LNL at nominal power up to cw operation. At the beginning of this year all the modules were assembled in three 3.3 m long super-modules structures that were shipped to Japan. RFQ was then installed and tuned with provisional aluminum tuners and end plates to nominal frequency and field distribution. Replacement of movable aluminum components with copper fixed ones increased cavity quality value not affecting field flatness and frequency.

Slides TUZMH03 [18.884 MB]

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WECAMH05

Optimization and Simuations of Beam Dynamics in APF Accelerators

linac, simulation, acceleration, ion

70

D.A. Ovsyannikov, V.V. Altsybeyev
Saint Petersburg State University, Saint Petersburg, Russia

Design problem of APF accelerator for ensurance enough high quality of output beam is considered. As we know, this problem is not easy because we have to achieve stability of longitudinal and transversal motions simultaneously. One of the first significant results in this subject were obtained by V. V. Kushin. In this work the problems of optimizations of intense ion beam are considered. The optimazation approaches for some beam characteristics improving (acceleration and transmission rates) are considered. Obtained results are confirmed by particle in cell simulations.

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FRCAMH02

Commissioning of New Light Ion RFQ Linac and First Nuclotron Run with New Injector

ion, linac, ion-source, vacuum

153

A.V. Butenko, A.M. Bazanov, D.E. Donets, A.D. Kovalenko, K.A. Levterov, D.A. Lyuosev, A.A. Martynov, V.V. Mialkovskiy, D.O. Ponkin, R.G. Pushkar, V.V. Seleznev, K.V. Shevchenko, I.V. Shirikov, A.O. Sidorin
JINR/VBLHEP, Moscow, Russia
S.V. Barabin, A.V. Kozlov, G. Kropachev, T. Kulevoy, V.G. Kuzmichev
ITEP, Moscow, Russia
A. Belov
RAS/INR, Moscow, Russia
V.V. Fimushkin, B.V. Golovenskiy, A. Govorov, V. Kobets, V.A. Monchinsky, A.V. Smirnov, G.V. Trubnikov
JINR, Dubna, Moscow Region, Russia
S.M. Polozov
MEPhI, Moscow, Russia

The new accelerator complex Nuclotron-based Ion Collider fAcility (NICA) is now under development and construction at JINR, Dubna. This complex is assumed to operate using two injectors: the Alvarez-type linac LU-20 as injector of light ions, polarized protons and deuterons and a new linac HILAc - injector of heavy ions beams. Old HV for-injector of the LU-20, which operated from 1974, is replaced by the new RFQ accelerator, which was commissioned in spring 2016. The first Nuclotron technological run with new fore-injector was performed in June 2016. Beams of D⁺ and H²⁺ were successfully injected and accelerated in the Nuclotron ring. Main results of the RFQ commissioning and the first Nuclotron run with new for-injector is discussed in this paper.

Slides FRCAMH02 [30.140 MB]

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FRCAMH03

Commissioning of the New Heavy Ion Linac at the NICA Project

ion, linac, ion-source, heavy-ion

156

A.V. Butenko, A.M. Bazanov, D.E. Donets, A.D. Kovalenko, K.A. Levterov, D.A. Lyuosev, A.A. Martynov, V.V. Mialkovskiy, V.V. Seleznev, K.V. Shevchenko, I.V. Shirikov, A.O. Sidorin
JINR/VBLHEP, Moscow, Russia
B.V. Golovenskiy, A. Govorov, V. Kobets, V.A. Monchinsky, A.V. Smirnov, E. Syresin, G.V. Trubnikov
JINR, Dubna, Moscow Region, Russia
H. Hoeltermann, H. Podlech, U. Ratzinger, A. Schempp
BEVATECH, Frankfurt, Germany
D.A. Liakin
ITEP, Moscow, Russia

The new accelerator complex Nuclotron-based Ion Collider fAcility (NICA) is now under development and construction at JINR, Dubna. This complex is assumed to operate using two injectors: modernized old Alvarez-type linac LU-20 as injector of light polarized ions and a new Heavy Ion Linear Accelerator HILAc - injector of heavy ions beams. The new heavy ion linac accelerate ions with q/A values above 0.16 to 3.2 MeV/u is under commissioning. The main components are 4-Rod-RFQ and two IH - drift tube cavities is operated at 100.6 MHz. Main results of the HILAc commissioning with carbon beam from the laser ion source are discussed.

Slides FRCAMH03 [14.452 MB]

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TUPSA013

Investigation of a Second Order Method of RFQ Channel Optimization

controls, focusing, acceleration, software

240

O.I. Drivotin
St. Petersburg State University, St. Petersburg, Russia
D.A. Starikov
Saint Petersburg State University, Saint Petersburg, Russia

This report is devoted to a numerical method of solution of the RFQ structure optimization problem. The problem is considered as a control theory problem. Control functions representing geometry of the electrodes and a quality functional describing the beam are introduced. To solve the problem numerically these control functions are parametrized. The presented method is based on the computation of the derivatives of the first and the second order of the quality functional on the parameters. Results of investigation of efficiency of the method relatively to a method including computation of the derivatives only of the first order are presented.

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TUPSA014

A Simple Model for Electromagnetic Field in RFQ Channel

electromagnetic-fields, focusing, real-time, software

244

O.I. Drivotin, I.T. Dulatov
St. Petersburg State University, St. Petersburg, Russia

Numerical solution of the RFQ structure optimization problem requires a great amount of computation. Each consecutive step of the numerical optimization includes modification of geometry of the channel and computation of electromagnetic field for modified geometry. Therefore, a simple model describing the field in the channel is needed for the optimization. Such model is proposed in this report. It differs from the commonly used traditional model of the field, which can be applied when profiles of the vanes are described by the harmonic functions of the longitudinal coordinate. Our model is more general and can be applied for arbitrary profiles of the vanes.

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TUPSA015

Acceleration of Deuterons and Protons in Single RFQ Strucrure

ion, acceleration, focusing, proton

247

A.D. Ovsyannikov, D.A. Ovsyannikov, Y.A. Svistunov
Saint Petersburg State University, Saint Petersburg, Russia
A.P. Durkin
MRTI RAS, Moscow, Russia

Some aspects of acceleration of protons and deuterons in single RFQ are considered. Usually vane voltage for protons must be two times less than vane voltage for deuterons. If space charge is significant vane voltage for protons can be too small to reach high efficiency of bunching and focusing of protons beam. It is shown that a rising of voltage up to nominal value for deuterons leads to increasing of capture and transmission for protons. Another problem is concerned with a choice of radial matching section parameters, which are optimal for both beams (proton and deuterons) simultaneously. Methods of optimization are discussed. Analysis of particles dynamics is illustrated by calculation's results.

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TUPSA026

Beam Dynamics Study for the New CW RFQ

linac, simulation, proton, space-charge

267

S.M. Polozov, W.A. Barth, T. Kulevoy, Y. Lozeev, S. Yaramyshev
MEPhI, Moscow, Russia
W.A. Barth, F.D. Dziuba, S. Yaramyshev
GSI, Darmstadt, Germany
W.A. Barth, F.D. Dziuba
HIM, Mainz, Germany
T. Kulevoy, S.M. Polozov
ITEP, Moscow, Russia

A compact "university scale" CW research proton accelerator, as well as driver linac with three branches of experimental beam lines, delivering beam energy of 3, 10 and 30 MeV for dedicated experiments, are recently under development in Russia. A proposed front-end system of both linacs comprises a 2 MeV CW RFQ, which is foreseen to bunch and accelerate up to 10 mA proton beam. The RFQ design is presented. The beam dynamics simulation results, obtained by means of different simulation code, are discussed and compared.

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TUPSA038

The RF Power System for RFQ-Injector of Linac-20

ion, DTL, high-voltage, acceleration

297

V.G. Kuzmichev, A.V. Kozlov, T. Kulevoy, S.M. Polozov, D.N. Selesnev, Yu. Stasevich
ITEP, Moscow, Russia
A.V. Butenko
JINR, Dubna, Moscow Region, Russia
T. Kulevoy, S.M. Polozov
MEPhI, Moscow, Russia

In the frame of the Nuclotron-M project the electrostatic injector of LU-20 is replaced by a RFQ accelerator, which has been developed in ITEP. The construction of 400 kW, 145 MHz RF system for RFQ-injector are described. Pa-rameters and test results of the RF power system operated on the resistive load and on RFQ during ion beam accele-ration are presented

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WEPSB005

On the Minimax Problem of Beam Dynamics Optimization

controls, acceleration, linac, focusing

360

M.A. Mizintseva, D.A. Ovsyannikov
St. Petersburg State University, St. Petersburg, Russia

The problem of simultaneous optimization of the ensemble of trajectories and some selected trajectory arises in the research of the charged particle beam dynamics. The present work suggests the use of a smooth functional for the evaluation of the selected trajectories and a minimax functional for the evaluation of the dynamics of the beam of trajectories. A combination of those functionals is considered.

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WEPSB012

On The Beam Dynamics Simulation In The Injection System

injection, simulation, software, controls

382

A.D. Ovsyannikov, S.A. Kozynchenko, V.A. Kozynchenko
Saint Petersburg State University, Saint Petersburg, Russia

When developing a particle accelerator for generating the high-precision beams, the injection system design is of importance, because it largely determines the output characteristics of the beam. At the present paper we consider the injection systems consisting of electrodes with given potentials. The design of such systems requires carrying out simulation of beam dynamics in the electrostatic fields. For external field simulation we use the new approach, proposed by A.D. Ovsyannikov, which is based on analytical approximations, or finite difference method, taking into account the real geometry of the injection system. The software designed for solving the problems of beam dynamics simulation and optimization in the injection system for non-relativistic beams has been developed. Both beam dynamics and electric field simulations in the injection system, that use analytical approach and finite difference method have been made and the results presented in this paper.

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WEPSB073

Design Study of the Proton Linac for Radiopharmaceuticals Production

DTL, linac, cavity, focusing

524

G. Kropachev, A.I. Balabin, T. Kulevoy, D.N. Selesnev, A. Sitnikov
ITEP, Moscow, Russia
T. Kulevoy
MEPhI, Moscow, Russia

The 8 MeV 200 MHz linac for acceleration of quasi cw 0.2 mA proton beam is under development at ITEP. The linac is designed for radiopharmaceuticals production which will be used in the Positron-Emission Tomography. The linac includes RFQ and DTL sections with 6D-beam matching between them. The DTL section has modular structure and consists of separated individually phased IH-cavities with beam focusing by permanent magnet quadrupoles located between the cavities. This DTL structure provides linac compactness and enables its tuning and commissioning cavity by cavity. Results of beam dynamic simulation and electrodynamics characteristics of linac cavities are presented.

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