RUPAC2012 - List of Keywords (multipole)

Paper	Title	Other Keywords	Page
THAOR01	Superconducting Quadrupole Module System for the SIS100 Synchrotron	quadrupole, dipole, sextupole, 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]

WEPPC021	Nonlinear Shunting as a Method of Magnetic Field Correction in Quadrupole Lenses	quadrupole, sextupole, insertion, synchrotron	492
	A.S. Tsyganov, E.S. Kazantseva, T.V. Rybitskaya, B.A. Skarbo, A.A. Starostenko BINP SB RAS, Novosibirsk, Russia
	Magnetic field quality requirements of lenses in modern particle accelerators are high. For example, harmonic fields of quadrupole lenses (manufactured in BINP SB RAS) of main ring of synchrotron source NSLS-II, must have no more than 1-2·10^-4 from the field at 75% of the aperture of the lens. Various methods of mechanical improvements are used to adjust the fields in the production process of magnetic lenses. Mechanical improvements result in increased time and cost of production. The report proposes a method for precise nondestructive correction of some magnetic field harmonics of the quadrupole lenses. Correction is performed using an additional element - non-linear current shunt of some coils. The report contains experimental data showing the possibilities of this method.

WEPPD021	HTS Wiggler Concept for a Damping Ring	wiggler, damping, dynamic-aperture, radiation	599
	A.V. Smirnov RadiaBeam, Santa Monica, USA A.A. Mikhailichenko CLASSE, Ithaca, New York, USA
	A new design for the proposed ILC damping ring (DR) is based on 2G HTS cabling technology applied to the DC windings with yoke and mu-metal-shimmed pole to achieve ~2 T high-quality field within a 86 mm gap and 32-40 cm period. Low levels of current densities (~90-100 A/mm²) provide a robust, reliable operation of the wiggler at higher heat loads, up to LN₂ temperatures with long leads, enhanced flexibility for cryostats and infrastructure in harsh radiation environment, and reduced failure rate compared to the baseline SC ILC DR wiggler design at very competitive cost.

Paper

Title

Other Keywords

Page

THAOR01

Superconducting Quadrupole Module System for the SIS100 Synchrotron

quadrupole, dipole, sextupole, 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]

WEPPC021

Nonlinear Shunting as a Method of Magnetic Field Correction in Quadrupole Lenses

quadrupole, sextupole, insertion, synchrotron

492

A.S. Tsyganov, E.S. Kazantseva, T.V. Rybitskaya, B.A. Skarbo, A.A. Starostenko
BINP SB RAS, Novosibirsk, Russia

Magnetic field quality requirements of lenses in modern particle accelerators are high. For example, harmonic fields of quadrupole lenses (manufactured in BINP SB RAS) of main ring of synchrotron source NSLS-II, must have no more than 1-2·10^-4 from the field at 75% of the aperture of the lens. Various methods of mechanical improvements are used to adjust the fields in the production process of magnetic lenses. Mechanical improvements result in increased time and cost of production. The report proposes a method for precise nondestructive correction of some magnetic field harmonics of the quadrupole lenses. Correction is performed using an additional element - non-linear current shunt of some coils. The report contains experimental data showing the possibilities of this method.

WEPPD021

HTS Wiggler Concept for a Damping Ring

wiggler, damping, dynamic-aperture, radiation

599

A.V. Smirnov
RadiaBeam, Santa Monica, USA
A.A. Mikhailichenko
CLASSE, Ithaca, New York, USA

A new design for the proposed ILC damping ring (DR) is based on 2G HTS cabling technology applied to the DC windings with yoke and mu-metal-shimmed pole to achieve ~2 T high-quality field within a 86 mm gap and 32-40 cm period. Low levels of current densities (~90-100 A/mm²) provide a robust, reliable operation of the wiggler at higher heat loads, up to LN₂ temperatures with long leads, enhanced flexibility for cryostats and infrastructure in harsh radiation environment, and reduced failure rate compared to the baseline SC ILC DR wiggler design at very competitive cost.