RUPAC2012 - List of Keywords (dipole)

Paper	Title	Other Keywords	Page
THAOR01	Superconducting Quadrupole Module System for the SIS100 Synchrotron	quadrupole, sextupole, multipole, vacuum	143
	E.S. Fischer, O.K. Kester, J.P. Meier, A. Mierau, P. Schnizer, P.J. Spiller, K. Sugita GSI, Darmstadt, Germany H.G. Khodzhibagiyan, G.V. Trubnikov JINR, Dubna, Moscow Region, Russia
	The SIS100 heavy ion synchrotron, the core machine of the FAIR complex, uses fast ramped superconducting magnets. As for its ancestor, the Nuclotron operational at JINR Dubna since 1993, its superconducting magnets are based on iron dominated design and coils made of Nuclotron type cables. The SIS100 magnets differ from the Nuclotron magnets in the following points: they are longer, the field aperture was enlarged and the field quality improved, its AC losses reduced. The coils have a lower hydraulic resistance and the operation current is doubled. These achievements were obtained in a R&D collaboration between JINR and GSI. Now in the realization phase GSI will procure and test the SIS100 dipole magnets, while JINR together with GSI will finalize the design of the quadrupoles units (consisting of one quadrupole and one corrector), procure, test and assemble them into doublets. We report on the status of the project, the scheme of the JINR-GSI collaboration for developing and manufacturing the SIS100 quadrupole modules and the steps required to achieve the start of the series production.
	Slides THAOR01 [4.337 MB]

THAOR02	Production of Superconducting Magnets and Cryogenic Systems at IHEP	cryogenics, quadrupole, kaon, controls	146
	S. Kozub, A.I. Ageev, A. Bakay, I. Bogdanov, E. Kashtanov, A.P. Orlov, V.A. Pokrovsky, P.A. Shcherbakov, L.S. Shirshov, I. Slabodchikov, M.N. Stolyarov, V. Sytnik, L. Tkachenko, S. Zinchenko IHEP, Moscow Region, Russia
	Largest in Russia cryogenic system of 280 W refrigeration capacity at 1.8 K temperature for cooling with superfluid helium of superconducting RF separator for the OKA experimental complex to produce a separated Kaon beam from U-70 proton accelerator was developed and commissioned at Institute for High Energy Physics (IHEP). Experience of the cryogenic system operation and direction of its modernization are discussed. Results of the development of fast-cycling superconducting magnets for the FAIR project (European Research Centre of Ions and Antiprotons, Germany) are presented.
	Slides THAOR02 [1.471 MB]

THAOR03	Status of the Design and Test of Superconducting Magnets for the NICA Project	booster, collider, quadrupole, superconducting-magnet	149
	H.G. Khodzhibagiyan, P.G. Akishin, A.V. Bychkov, A. Donyagin, A.R. Galimov, O.S. Kozlov, G.L. Kuznetsov, I.N. Meshkov, V.A. Mikhaylov, E.V. Muravieva, P.I. Nikitaev, A.V. Shabunov, A.V. Smirnov, A.Y. Starikov, G.V. Trubnikov JINR, Dubna, Moscow Region, Russia
	NICA is a new accelerator complex being under design and construction at Joint Institute for Nuclear Research in Dubna. The actual design and the main characteristics of superconducting magnets for the NICA booster and the NICA collider are given. The magnets are based on a cold window frame iron yoke and a single-layered superconducting winding made from a hollow NbTi composite superconductor cable cooled with forced two-phase helium flow. The first results of cryogenic tests of the magnets for the NICA project are presented.
	Slides THAOR03 [0.884 MB]

MOPPA017	Collider of the NICA Accelerator Complex: Optical Structure and Beam Dynamics	collider, ion, luminosity, quadrupole	278
	O.S. Kozlov, A.V. Eliseev, H.G. Khodzhibagiyan, S.A. Kostromin, I.N. Meshkov, A.O. Sidorin, G.V. Trubnikov JINR, Dubna, Moscow Region, Russia
	Accelerator complex NICA, developed in VBLHEP JINR, must provide an ion-ion (Au79 +) and ion-proton collisions at energies of 1-4.5 GeV/u, as well as experiments on collisions of polarized proton-proton and deuteron-deuteron beams. The calculations of the optical properties of superconducting collider rings have been aimed to create appropriate conditions for the collisions of beams and obtaining the required luminosity parameters in the working range of energies. The collider characteristics and the beam dynamics have been worked out in most for ion-ion mode of the complex.

TUPPB015	The Parameters Extracted Beams in Recirculator SALO	electron, quadrupole, recirculation, extraction	344
	I.S. Guk, S.G. Kononenko, F.A. Peev, A.S. Tarasenko NSC/KIPT, Kharkov, Ukraine
	Taking into account the nonlinearity of the dipole and quadrupole lenses are calculated beam parameters on the output channels of the recirculator SALO.

WEPPC002	RF Design and Tuning of Linac4 RFQ	rfq, linac, quadrupole, controls	448
	A. France, M. Desmons, O. Piquet CEA/DSM/IRFU, France C. Rossi CERN, Geneva, Switzerland
	In the Linac4 (a part of CERN accelerator complex upgrade), a 3 MeV, 3-meter long, 352 MHz RFQ accelerates a 70 mA H⁻ ion beam from source to DTL input energy. RF design and tuning both rely on the same 4-wire transmission model (TLM), which ensures a consistent control of all RF parameters. 3D simulations are used to determine electrical parameters of TLM in the design process. RFQ end-circuits are designed to minimize sensitivity of RFQ voltage profile to perturbations that might occur during operation, and are tuned with quadrupole rods. Slug tuners size and distribution take into account fabrication tolerances and bead-pull measurement constraints. The three 1-meter long RFQ sections are machined and brazed in CERN. RF bead-pull measurements used to estimate RFQ electrical parameters throughout fabrication steps have not revealed any significant departure from expected values. Vacuum ports position is also adjusted prior to braze using RF measurements. Electrical parameters of end-circuits are derived from sets of five linearly independent bead-pull measurements. Slugs are tuned using a closed-loop algorithm, where "command" quantities are tuner positions, "control" quantities are measured fields, and RFQ inverse transfer function is based on the TLM. Tuning convergence and final accuracy will be presented.

WEPPC014	Performance of the Magnetic System of a 12 MeV UPC Race-Track Microtron	simulation, factory, microtron, vacuum	472
	I. Vladimirov MSU SINP, Moscow, Russia I.V. Chernov, V.V. Zacharov Elamt-PM, Kaluga, Russia Yu.A. Kubyshin, J.P. Rigla UPC, Barcelona, Spain N.I. Pakhomov, V.I. Shvedunov MSU, Moscow, Russia
	The performance of the magnetic system of a 12 MeV electron race-track microtron (RTM) which is under construction at the Universitat Politècnica de Catalunya (UPC) is described. The RTM magnetic system consists of two four-pole end magnets with the main field level about 0.8 T, one quadrupole and four beam extraction dipoles. As a source of the magnetic field in these magnets a Sa-Co rare earth permanent magnet material is used. This helps to get a quite compact design of the RTM and allows to place the magnetic systems in a high vacuum environment of the accelerator vacuum chamber. We discuss results of numerical simulations of the tuning of the end magnets by mean of special tuners and describe their engineering design which permits to assemble the magnets and fix the Sa-Co blocks without gluing. Also a method and results of magnetic field distribution measurements and magnet tuning are reported.

WEPPC027	Correcting Magnet Power Supplies for the NSLS-II Booster	booster, sextupole, controls, synchrotron	500
	K.R. Yaminov, O.V. Belikov, P.B. Cheblakov, A.I. Erokhin, S.E. Karnaev, V.V. Kolmogorov, A.S. Medvedko, S.R. Singatulin BINP SB RAS, Novosibirsk, Russia
	Budkers Institute of Nuclear physics builds booster for syncrotron light source NSLS-II. Booster should accelerate electrons from energy 200 MeV to energy 3 GeV, acceleration phase duration is 250 ms, repetition rate – up to 2 Hz. Booster magnet system includes 16 sextuples and 36 dipole correcting magnets powered separately. Forth-quadratant current sources for sextuples and correcting magnets have maximum output current ±6 А, maximum output voltage ±100 V, maximim output current ripples and long-term stability are better than 0,1% relative to 6 A. In ramping mode with current slew rate up to 200 A/s time lag between setpoint and output current is not more than 1msec and can be compensated by software. Results of power supplies system tests and commissioning will be presented in paper.

WEPPC037	Cylindrical Phased Dipoles Array for Hyperthermia of Deep-Situated Tumors	simulation, radiation, electromagnetic-fields, radio-frequency	521
	A.M. Fadeev, V.N. Belyaev, S.M. Polozov MEPhI, Moscow, Russia E.A. Perelstein JINR, Dubna, Moscow Region, Russia
	The treatment of deep-situated malignant tumors is often a difficult problem in which the purpose is to reduce the size of completely remove a tumor by using one or more modalities. The traditional methods are: radiation therapy, chemotherapy and surgery. Hyperthermia is another method which is used alone or coupled with other methods of cancer treatment. Hyperthermia is a heating of the tumor that makes it more sensitive to chemotherapy or radiation therapy and leads to it thermal damage. Temperature range for hyperthermia treatment is from 42.5 C to 45 C. It is important to prevent heating of healthy tissues and to produce sufficient heating at the site of a deep-situated tumor. This kind of hyperthermia is called the local hyperthermia. The electromagnetic field in 100-200 MHz frequency range is optimal for heating of deep-situated tumors. The system for local hyperthermia of cancer was simulated. This system is based on cylindrical phased array consisting of multiple dipole antennas with operating frequency 150 MHz. The electric fields and specific absorption rate distributions are calculated in cut of tissue-equivalent phantom. Shown that electric field can be focused in desirable region by means of varying of amplitudes and phases of each dipole. The advantages of using combined therapy of common hyperthermia with chemotherapy or radiation therapy are discussed.

WEPPC038	RF Power and Control Systems for Phased Dipoles Array System for Hyperthermia	controls, electromagnetic-fields, focusing, site	524
	A.M. Fadeev, V.N. Belyaev, A.A. Blinnikov, S.M. Polozov MEPhI, Moscow, Russia E.A. Perelstein JINR, Dubna, Moscow Region, Russia
	Cylindrical array of independently phased dipoles is suggested for hyperthermia of deep-situated tumors as a kind of treatment of cancer coupled with other methods such as radiation therapy and chemotherapy. It was proposed to focus the maximum of electromagnetic field at the site of tumor to produce high efficiency heating of tumor and to prevent overheating of surrounding healthy tissues. That's why we use system of independently fed dipole antennas. The operating frequency is 150 MHz. The independent feeding permits us to focus electromagnetic field producing by phased array in desirable area by means of changing of amplitudes and phases of each dipole. The RF power system schematic layout for 8 independently phased dipole antennas is presented. The control system of RF power system elements is considered. The software developing to provide choosing amplitude's and phase's values of dipoles are discussed.

WEPPD024	The Quench Detection System for Superconducting Elements of Nuclotron Acceleration Complex	controls, quadrupole, power-supply, monitoring	605
	A.O. Sidorin, E.V. Ivanov, G.V. Trubnikov JINR, Dubna, Moscow Region, Russia
	The system provides highly effective detection of quenches in superconducting elements of Nuclotron. Full information about quench element is transmitted to control room. Diagram of analogue quench signal could be displayed on screen for further analysis. The system performs scheduled self-test diagnostics in real time and controls power elements of energy evacuation.

Paper

Title

Other Keywords

Page

THAOR01

Superconducting Quadrupole Module System for the SIS100 Synchrotron

quadrupole, sextupole, multipole, vacuum

143

E.S. Fischer, O.K. Kester, J.P. Meier, A. Mierau, P. Schnizer, P.J. Spiller, K. Sugita
GSI, Darmstadt, Germany
H.G. Khodzhibagiyan, G.V. Trubnikov
JINR, Dubna, Moscow Region, Russia

The SIS100 heavy ion synchrotron, the core machine of the FAIR complex, uses fast ramped superconducting magnets. As for its ancestor, the Nuclotron operational at JINR Dubna since 1993, its superconducting magnets are based on iron dominated design and coils made of Nuclotron type cables. The SIS100 magnets differ from the Nuclotron magnets in the following points: they are longer, the field aperture was enlarged and the field quality improved, its AC losses reduced. The coils have a lower hydraulic resistance and the operation current is doubled. These achievements were obtained in a R&D collaboration between JINR and GSI. Now in the realization phase GSI will procure and test the SIS100 dipole magnets, while JINR together with GSI will finalize the design of the quadrupoles units (consisting of one quadrupole and one corrector), procure, test and assemble them into doublets. We report on the status of the project, the scheme of the JINR-GSI collaboration for developing and manufacturing the SIS100 quadrupole modules and the steps required to achieve the start of the series production.

Slides THAOR01 [4.337 MB]

THAOR02

Production of Superconducting Magnets and Cryogenic Systems at IHEP

cryogenics, quadrupole, kaon, controls

146

S. Kozub, A.I. Ageev, A. Bakay, I. Bogdanov, E. Kashtanov, A.P. Orlov, V.A. Pokrovsky, P.A. Shcherbakov, L.S. Shirshov, I. Slabodchikov, M.N. Stolyarov, V. Sytnik, L. Tkachenko, S. Zinchenko
IHEP, Moscow Region, Russia

Largest in Russia cryogenic system of 280 W refrigeration capacity at 1.8 K temperature for cooling with superfluid helium of superconducting RF separator for the OKA experimental complex to produce a separated Kaon beam from U-70 proton accelerator was developed and commissioned at Institute for High Energy Physics (IHEP). Experience of the cryogenic system operation and direction of its modernization are discussed. Results of the development of fast-cycling superconducting magnets for the FAIR project (European Research Centre of Ions and Antiprotons, Germany) are presented.

Slides THAOR02 [1.471 MB]

THAOR03

Status of the Design and Test of Superconducting Magnets for the NICA Project

booster, collider, quadrupole, superconducting-magnet

149

H.G. Khodzhibagiyan, P.G. Akishin, A.V. Bychkov, A. Donyagin, A.R. Galimov, O.S. Kozlov, G.L. Kuznetsov, I.N. Meshkov, V.A. Mikhaylov, E.V. Muravieva, P.I. Nikitaev, A.V. Shabunov, A.V. Smirnov, A.Y. Starikov, G.V. Trubnikov
JINR, Dubna, Moscow Region, Russia

NICA is a new accelerator complex being under design and construction at Joint Institute for Nuclear Research in Dubna. The actual design and the main characteristics of superconducting magnets for the NICA booster and the NICA collider are given. The magnets are based on a cold window frame iron yoke and a single-layered superconducting winding made from a hollow NbTi composite superconductor cable cooled with forced two-phase helium flow. The first results of cryogenic tests of the magnets for the NICA project are presented.

Slides THAOR03 [0.884 MB]

MOPPA017

Collider of the NICA Accelerator Complex: Optical Structure and Beam Dynamics

collider, ion, luminosity, quadrupole

278

O.S. Kozlov, A.V. Eliseev, H.G. Khodzhibagiyan, S.A. Kostromin, I.N. Meshkov, A.O. Sidorin, G.V. Trubnikov
JINR, Dubna, Moscow Region, Russia

Accelerator complex NICA, developed in VBLHEP JINR, must provide an ion-ion (Au79 +) and ion-proton collisions at energies of 1-4.5 GeV/u, as well as experiments on collisions of polarized proton-proton and deuteron-deuteron beams. The calculations of the optical properties of superconducting collider rings have been aimed to create appropriate conditions for the collisions of beams and obtaining the required luminosity parameters in the working range of energies. The collider characteristics and the beam dynamics have been worked out in most for ion-ion mode of the complex.

TUPPB015

The Parameters Extracted Beams in Recirculator SALO

electron, quadrupole, recirculation, extraction

344

I.S. Guk, S.G. Kononenko, F.A. Peev, A.S. Tarasenko
NSC/KIPT, Kharkov, Ukraine

Taking into account the nonlinearity of the dipole and quadrupole lenses are calculated beam parameters on the output channels of the recirculator SALO.

WEPPC002

RF Design and Tuning of Linac4 RFQ

rfq, linac, quadrupole, controls

448

A. France, M. Desmons, O. Piquet
CEA/DSM/IRFU, France
C. Rossi
CERN, Geneva, Switzerland

In the Linac4 (a part of CERN accelerator complex upgrade), a 3 MeV, 3-meter long, 352 MHz RFQ accelerates a 70 mA H⁻ ion beam from source to DTL input energy. RF design and tuning both rely on the same 4-wire transmission model (TLM), which ensures a consistent control of all RF parameters. 3D simulations are used to determine electrical parameters of TLM in the design process. RFQ end-circuits are designed to minimize sensitivity of RFQ voltage profile to perturbations that might occur during operation, and are tuned with quadrupole rods. Slug tuners size and distribution take into account fabrication tolerances and bead-pull measurement constraints. The three 1-meter long RFQ sections are machined and brazed in CERN. RF bead-pull measurements used to estimate RFQ electrical parameters throughout fabrication steps have not revealed any significant departure from expected values. Vacuum ports position is also adjusted prior to braze using RF measurements. Electrical parameters of end-circuits are derived from sets of five linearly independent bead-pull measurements. Slugs are tuned using a closed-loop algorithm, where "command" quantities are tuner positions, "control" quantities are measured fields, and RFQ inverse transfer function is based on the TLM. Tuning convergence and final accuracy will be presented.

WEPPC014

Performance of the Magnetic System of a 12 MeV UPC Race-Track Microtron

simulation, factory, microtron, vacuum

472

I. Vladimirov
MSU SINP, Moscow, Russia
I.V. Chernov, V.V. Zacharov
Elamt-PM, Kaluga, Russia
Yu.A. Kubyshin, J.P. Rigla
UPC, Barcelona, Spain
N.I. Pakhomov, V.I. Shvedunov
MSU, Moscow, Russia

The performance of the magnetic system of a 12 MeV electron race-track microtron (RTM) which is under construction at the Universitat Politècnica de Catalunya (UPC) is described. The RTM magnetic system consists of two four-pole end magnets with the main field level about 0.8 T, one quadrupole and four beam extraction dipoles. As a source of the magnetic field in these magnets a Sa-Co rare earth permanent magnet material is used. This helps to get a quite compact design of the RTM and allows to place the magnetic systems in a high vacuum environment of the accelerator vacuum chamber. We discuss results of numerical simulations of the tuning of the end magnets by mean of special tuners and describe their engineering design which permits to assemble the magnets and fix the Sa-Co blocks without gluing. Also a method and results of magnetic field distribution measurements and magnet tuning are reported.

WEPPC027

Correcting Magnet Power Supplies for the NSLS-II Booster

booster, sextupole, controls, synchrotron

500

K.R. Yaminov, O.V. Belikov, P.B. Cheblakov, A.I. Erokhin, S.E. Karnaev, V.V. Kolmogorov, A.S. Medvedko, S.R. Singatulin
BINP SB RAS, Novosibirsk, Russia

Budkers Institute of Nuclear physics builds booster for syncrotron light source NSLS-II. Booster should accelerate electrons from energy 200 MeV to energy 3 GeV, acceleration phase duration is 250 ms, repetition rate – up to 2 Hz. Booster magnet system includes 16 sextuples and 36 dipole correcting magnets powered separately. Forth-quadratant current sources for sextuples and correcting magnets have maximum output current ±6 А, maximum output voltage ±100 V, maximim output current ripples and long-term stability are better than 0,1% relative to 6 A. In ramping mode with current slew rate up to 200 A/s time lag between setpoint and output current is not more than 1msec and can be compensated by software. Results of power supplies system tests and commissioning will be presented in paper.

WEPPC037

Cylindrical Phased Dipoles Array for Hyperthermia of Deep-Situated Tumors

simulation, radiation, electromagnetic-fields, radio-frequency

521

A.M. Fadeev, V.N. Belyaev, S.M. Polozov
MEPhI, Moscow, Russia
E.A. Perelstein
JINR, Dubna, Moscow Region, Russia

The treatment of deep-situated malignant tumors is often a difficult problem in which the purpose is to reduce the size of completely remove a tumor by using one or more modalities. The traditional methods are: radiation therapy, chemotherapy and surgery. Hyperthermia is another method which is used alone or coupled with other methods of cancer treatment. Hyperthermia is a heating of the tumor that makes it more sensitive to chemotherapy or radiation therapy and leads to it thermal damage. Temperature range for hyperthermia treatment is from 42.5 C to 45 C. It is important to prevent heating of healthy tissues and to produce sufficient heating at the site of a deep-situated tumor. This kind of hyperthermia is called the local hyperthermia. The electromagnetic field in 100-200 MHz frequency range is optimal for heating of deep-situated tumors. The system for local hyperthermia of cancer was simulated. This system is based on cylindrical phased array consisting of multiple dipole antennas with operating frequency 150 MHz. The electric fields and specific absorption rate distributions are calculated in cut of tissue-equivalent phantom. Shown that electric field can be focused in desirable region by means of varying of amplitudes and phases of each dipole. The advantages of using combined therapy of common hyperthermia with chemotherapy or radiation therapy are discussed.

WEPPC038

RF Power and Control Systems for Phased Dipoles Array System for Hyperthermia

controls, electromagnetic-fields, focusing, site

524

A.M. Fadeev, V.N. Belyaev, A.A. Blinnikov, S.M. Polozov
MEPhI, Moscow, Russia
E.A. Perelstein
JINR, Dubna, Moscow Region, Russia

Cylindrical array of independently phased dipoles is suggested for hyperthermia of deep-situated tumors as a kind of treatment of cancer coupled with other methods such as radiation therapy and chemotherapy. It was proposed to focus the maximum of electromagnetic field at the site of tumor to produce high efficiency heating of tumor and to prevent overheating of surrounding healthy tissues. That's why we use system of independently fed dipole antennas. The operating frequency is 150 MHz. The independent feeding permits us to focus electromagnetic field producing by phased array in desirable area by means of changing of amplitudes and phases of each dipole. The RF power system schematic layout for 8 independently phased dipole antennas is presented. The control system of RF power system elements is considered. The software developing to provide choosing amplitude's and phase's values of dipoles are discussed.

WEPPD024

The Quench Detection System for Superconducting Elements of Nuclotron Acceleration Complex

controls, quadrupole, power-supply, monitoring

605

A.O. Sidorin, E.V. Ivanov, G.V. Trubnikov
JINR, Dubna, Moscow Region, Russia

The system provides highly effective detection of quenches in superconducting elements of Nuclotron. Full information about quench element is transmitted to control room. Diagram of analogue quench signal could be displayed on screen for further analysis. The system performs scheduled self-test diagnostics in real time and controls power elements of energy evacuation.