RuPAC-2010 - List of Keywords (dipole)

A B C D E F G H I K L M O P Q R S T U V W

dipole

Paper	Title	Other Keywords	Page
TUPSA004	Superconducting Magnets for the NICA Accelerator Complex in Dubna	collider, booster, quadrupole, synchrotron	41
	E. V. Muravieva, H. G. Khodzhibagiyan, V. A. Mikhailov JINR, Dubna, Moscow Region
	The Nuclotron-based Ion Collider Facility (NICA) is the new accelerator complex being constructed at JINR aimed to provide collider experiments with heave ions and polarized deuterons. It includes new linac, Booster, upgraded superconducting (SC) synchrotron Nuclotron and Collider consisting of two storage rings. The NICA Booster dipole and quadrupole magnets are based on the Nuclotron type magnet with "cold" iron yoke and winding of hollow superconductor. This paper presents the basic characteristics, describes the design and status of manufacturing of the NICA Booster dipole and quadrupole full size model magnets.

TUPSA014	Design of the Nuclotron Booster in the NICA Project	ion, booster, injection, electron	68
	A. O. Sidorin, N. N. Agapov, A. V. Eliseev, V. Karpinsky, H. G. Khodzhibagiyan, A. D. Kovalenko, G. L. Kuznetsov, I. N. Meshkov, V. A. Mikhailov, V. Monchinsky, A. V. Smirnov, G. V. Trubnikov, B. Vasilishin JINR, Dubna, Moscow Region
	The main goal of the Nuclotron booster construction are following: accumulation up to 4*10⁺⁹ Au³²⁺ ions; acceleration of the ions up to energy of 600 MeV/u that is sufficient for stripping of the ions to the bare nucleus state; simplification of the requirements to the vacuum conditions in the Nuclotron; forming of the required beam emittance at the energy of 100 MeV/u with electron cooling system. The features of this booster, the requirement to the main synchrotron systems and their parameters are presented.

TUPSA017	Project of JINR Superconducting Synchrotron for Hadron Therapy	injection, synchrotron, ion, emittance	77
	E. Syresin, N. N. Agapov, A. V. Eliseev, G. G. Hodshibagijan, V. Karpinsky, A. D. Kovalenko, I. N. Meshkov, V. A. Mikhailov, A. G. Olshevsky, G. Shirkov, S. G. Shirkov, G. V. Trubnikov, A. Tuzikov JINR, Dubna, Moscow Region
	The project of medical carbon synchrotron at maximal ion energy of 400 MeV/n was developed in JINR. The project goal is accumulation of the superconducting technology at construction of the carbon synchrotron with a circumference of 65 m on basis of Nuclotron type magnet elements. For injection of the carbon ions it is proposed to use IH linac of C⁴⁺ at energy 4 MeV/n. Superconducting gantry at a weight of 150 t is developed for patient treatment.

TUPSA019	Power Supply and Protection System of the Nuclotron Booster in the NICA Project	power-supply, booster, quadrupole, superconducting-magnet	83
	A. V. Kudashkin JINR/VBLHEP, Moscow
	The Nuclotron Booster in NICA project is aimed to accelerate heavy ions up to 600 MeV/u to provide effective stripping before injection into the Nuclotron. The Booster power supply system consists of one powerful unit, providing maximum current of 12 kA and field ramp up to 1 T/s, and two additional units, that are used for the ring working point adjustment. The quench protection system is based on thyristor keys. Structure and parameters of the power sypply system is presented.

WEPSB022	Nonlinear Electron Beam Dynamics with Large Energy Spread in the Magnetic Mirror	electron, linac, quadrupole, sextupole	212
	Y. A. Fomin, V. Korchuganov RRC, Moscow
	One of the features of new injection system for Kurchatov source of synchrotron radiation is an energy doubling of electron beam in forinjector – linear accelerator. The magnetic mirror provides 180° turn of electron beam into acceleration structure of linac for twice beam energy increase. This paper describes linear and nonlinear electron beam dynamics with energy 80 MeV and large energy spread in the magnetic mirror. The theoretical first- and second order optical functions of the magnetic mirror and the results of computer simulation of electron beam trajectories taking into account large energy spread and curvature of trajectories are presented. The structure of the magnetic mirror providing the achromatic and isochronous 180° turn of electron beam with 7% energy spread is suggested. Mutual influence of “the head” and “the tail” of electron beam when colliding in a straight section spaced in between linac output and magnetic mirror on particle losses and on the longitudinal and transversal parameters are considered.

THCHC01	Development and Production of Superconducting and Cryogenic Equipment and Systems for Accelerators by IHEP	cryogenics, quadrupole, electron, vacuum	295
	S. Kozub, A. I. Ageev, I. Bogdanov, E. Kashtanov, A. P. Orlov, V. A. Pokrovsky, P. A. Shcherbakov, L. S. Shirshov, I. Slabodchikov, V. Sytnik, L. Tkachenko, S. Zinchenko, V. Zubko IHEP Protvino, Protvino, Moscow Region
	Superconducting and cryogenic programs at IHEP were got a powerful upsurge in the early eighties of the last century within the framework of the UNK project. More than hundred model superconducting magnets and the pilot batch of UNK superconducting dipoles and quadrupoles were produced and tested with the help of cryogenic test facilities built for this purpose. Cooperation with international scientific accelerator centers was developed in last ten years. Two superconducting magnetic systems of Electron Lens for the Tevatron accelerator (USA) were developed, manufactured and successfully brought into operation. 42 cryogenic electrical feed boxes of various types for Large Hadron Collider (Switzerland) were developed, produced and put into commission. Results of the development of fast-cycling superconducting magnets for the FAIR project (European Research Centre of Ions and Antiprotons, Germany) are discussed. Description of the largest in Russia cryogenic system for cooling with superfluid helium of superconducting RF separator for the new beam channel of the U-70 accelerator (Russia) is presented.
	Slides

THCHC02	Development of Fast-Cycling Superconducting Quadrupole and Corrector Magnets for the SIS 300	quadrupole, multipole, sextupole, resonance	300
	L. Tkachenko, I. Bogdanov, S. Kozub, P. A. Shcherbakov, I. Slabodchikov, V. Sytnik, V. Zubko IHEP Protvino, Protvino, Moscow Region
	Funding: Rosatom, contract Н.4е.45.03.10.1027 IHEP participates in the development of superconducting fast-cycling magnets for the FAIR project. In the frame of this project IHEP has developed a prototype of the main quadrupole, assigned for using in the SIS300 ring. The main parameters of the quadrupole are: 45-T/m central gradient in 125-mm ID of the coil with the useful aperture of 10⁵ mm; the gradient ramp rate is 10 T/m/c and the length of the prototype is 1 m. The main characteristics of the designed quadrupole magnet are discussed here. The correction system consists of multipole magnets, resonance and chromaticity sextupoles and steering dipoles. The multipole magnet contains octupole, sextupole and quadrupole coils and the steering magnet involves horizontal and vertical dipoles. Geometries of corrector and steering magnets are presented as well as their main magnetic parameters.
	Slides

THCHC03	Cooling System of the SIS300 Accelerator	cryogenics, quadrupole, multipole, superconducting-magnet	303
	S. Zinchenko, A. I. Ageev, S. Kozub, V. Zubko IHEP Protvino, Protvino, Moscow Region
	The Facility for Antiprotons and Ion Research (FAIR) being under construction in Germany as an international project is a cascade of accelerators; two last accelerators from this cascade will be made with the use of superconducting magnets. The large volume of the executed work on the SIS300 superconductive equipment allowed to start the estimation of the basic parameters of SIS300 cooling system. On the base of many research notes and calculations the item-by-item heat load budget at the helium temperature level is composed. Cooling system flow diagram is proposed, the calculated single phase helium temperature profiles along the string of magnets are presented and discussed. Helium flow pressure drop along the string of magnets during cooling down is calculated on the basis of "temperature wave" model and cooling down time of the accelerator is estimated.
	Slides

THPSC004	Input Couplers for the Dipole Mode Periodic Structures	coupling, simulation, resonance, emittance	328
	M. V. Lalayan, A. Anisimov, S. V. Kutsaev, A. Yu. Smirnov, N. P. Sobenin MEPhI, Moscow V. V. Paramonov RAS/INR, Moscow A. A. Zavadtsev, D. A. Zavadtsev Nano, Moscow
	Funding: Research is supported by Federal Education agency grant P1141 27.08.2009 and by FCP "Scientific and scientific-educational stuff of innovative Russia" grant. Three variants of the input coupler for the periodic deflecting structure operating at hybrid dipole TM11 mode, with the phase velocity equal to the light velocity are considered: non-symmetric design and two symmetric designs with auxiliary rectangular waveguide and shorting plates in it and with auxiliary cut-off rectangular waveguide. The reflection depending on the coupling window width and on the coupling cell diameter was been investigated for all coupler designs. The reflection coefficient has been calculated in the whole dipole mode passband. The field asymmetry in the beam area has been considered. The eigen frequency of the coupling cell has been calculated.

THPSC005	Materials for Fast Cycling Accelerator Superconducting Magnets	quadrupole, vacuum, insertion, superconducting-magnet	331
	P. A. Shcherbakov, I. Bogdanov, S. Kozub, L. S. Shirshov, I. Slabodchikov, V. Sytnik, L. Tkachenko, V. Zubko IHEP Protvino, Protvino, Moscow Region
	Funding: Rosatom, contract Í.4å.45.03.10.1027 Development of fast-cycling superconducting magnets with high field amplitudes and ramp rate makes severe requirements especially to material properties in order to improve field quality and to reduce AC losses. Analysis of experimental and literature data is fulfilled for magnetic characteristics of electric steels at different temperatures. Susceptibilities of stainless steels of different grades are examined as well as a tolerance on the value of the magnetic permeability. Mechanical, thermophysical and technological properties at room and cryogenic temperatures are presented. Comparison of steel characteristics, selected for the SIS300 quadrupole prototype, with the steels, used in the SIS300 dipole and steels, applied in the SIS100 prototype magnets is carried out. General advices to the choice of materials for electrical and stainless steels, used in a design of fast-cycling magnets, are given.

THPSC008	Superconducting Transformers for Study of High-Current Superconducting Cables	induction, superconducting-magnet, cryogenics, power-supply	340
	L. S. Shirshov, I. Bogdanov, E. Kashtanov, S. Kozub, P. A. Shcherbakov, I. Slabodchikov, L. Tkachenko, V. Zubko IHEP Protvino, Protvino, Moscow Region
	A facility for measurement of critical current and minimal quench energy of Rutherford-type superconducting cables for accelerator magnets is created. The sample current is energized by a superconducting transformer circuit using an inductive method, where the sample conductor is a part of the secondary circuit. Two superconducting transformers were built; one of them is a solenoid type coil. The transformer consists of two concentric solenoids; the secondary coil is placed inside the primary coil. External magnetic field up to 6.5 T is provided by a superconducting solenoid with the aperture diameter of 60 mm. The second superconducting transformer with race-track coils has been designed and taken into operation. Short-circuited sample, fixed on a special holder, is placed in the aperture of a superconducting dipole magnet such way that the plane of sample loop is perpendicular to direction of external magnetic field, which can reach up to 6 T. The critical current of the secondary superconducting coil is 18 kA. The equipment for measurements of characteristics superconducting cable versus magnetic field is described.