IPAC2014 - List of Keywords (magnet-design)

Paper	Title	Other Keywords	Page
TUPRO078	AREAL Solenoid, Dipole and Steering Magnets Design and Performance	dipole, solenoid, electron, simulation	1223
	A.V. Tsakanian, H. Gagiyan, A.A. Gevorgyan, B. Grigoryan, V.G. Khachatryan, M. Manukyan, T.H. Mkrtchyan, S. Naghdalyan, A.S. Simonyan, V. V. Vardanyan CANDLE SRI, Yerevan, Armenia
	The AREAL solenoid, dipole and corrector magnets design, simulations and performance are presented. A solenoid magnet will be used for the focusing of the low energy (E~5MeV) electron beam after RF gun as well as in the beam diagnostic section. The magnetic iron cover of solenoid provides return path for magnetic field screening effectively the field in the outer space and concentrating it inside solenoid gap. The dipole magnet is part of the spectrometer for beam energy spread measurements. An Iron-free corrector magnet design allows independent horizontal and vertical beam steering. The design optimization and magnetic field calculations are performed using CST-EM Studio. A good agreement between measurements and simulations is obtained.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-TUPRO078
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TUPRO082	Shape Optimization for the ESRF II Magnets	multipole, quadrupole, software, lattice	1232
	G. Le Bec, J. Chavanne, P. N'gotta ESRF, Grenoble, France
	Magnets are a keystone of the ESRF upgrade programme. The specifications of the magnets of the ESRF II lattice are stringent: high gradients, extended Good Field Region (GFR) and vertical gaps large enough for the X-ray beam ports. The magnet design approach is presented here. Shape optimization of the magnet poles is systematically used. The magnet design is treated as an ill-posed, non linear, constrained problem. Iterative algorithms have been developed; the algorithms converge in less than 10 iterations, leading to very short computation time. This design method has been applied to high gradient quadrupole magnets. The shape optimization leads to original pole profiles.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-TUPRO082
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TUPRO113	Design and Measurement of a Low-energy Tunable Permanent Magnet Quadrupole Prototype	quadrupole, permanent-magnet, linear-collider, collider	1316
	B.J.A. Shepherd, J.A. Clarke, P. Wadhwa STFC/DL/ASTeC, Daresbury, Warrington, Cheshire, United Kingdom A. Bartalesi, M. Modena, M. Struik CERN, Geneva, Switzerland N.A. Collomb STFC/DL, Daresbury, Warrington, Cheshire, United Kingdom
	The 42 km long CLIC Drive Beam Decelerator (DBD) will decelerate beams of electrons from 2.4 GeV to 240 MeV. ASTeC in collaboration with CERN has developed a novel type of tunable permanent magnet quadrupole for the DBD. Two versions of the design were produced, for the high-energy and low-energy ends of the DBD respectively. This paper outlines the design of the low-energy version, which has a tuning range of 3.5-43 T/m. A prototype was built at Daresbury Laboratory (DL) in 2013, and extensive magnetic measurements were carried out at DL.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-TUPRO113
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TUPRO115	Progress on the Dipole Magnet for a Rapid Cycling Synchrotron	dipole, simulation, synchrotron, feedback	1322
	H. Witte, J.S. Berg BNL, Upton, Long Island, New York, USA M.L. Lopes Fermilab, Batavia, Illinois, USA
	Funding: Work supported by Brookhaven Science Associates, LC under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy. A rapid cycling hybrid synchrotron has been proposed for the acceleration of muons from 375 to 750 GeV. The bending in a hybrid synchrotron is created with interleaved cold and warm dipoles; the warm dipoles modulate the average bending field for the different particle momenta. A key challenge for the warm dipole magnets is the ramp rate, which is equivalent to frequencies of 400-1000 Hz. Recently a design has been suggested which employs 6.5 Si steel for the return yoke and FeCo for the poles. In simulations the design has shown a good performance (up to 2T) due to the FeCo and acceptable power losses by employing SiFe with a high Si content. The paper discusses the effect of eddy currents induced in the laminations and hysteresis effects on the field quality.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-TUPRO115
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TUPME014	Development of Six-dimensional Helical Muon Beam Cooling Channel for Muon Colliders	emittance, solenoid, cavity, collider	1373
	K. Yonehara Fermilab, Batavia, Illinois, USA
	A six-dimensional (6D) helical muon beam cooling channel (HCC) has been developed for a last decade. The practical HCC lattice parameters were optimized for the cooling performance in theoretical and numerical simulations. The HCC design group has been formed and has begun the machine development to realize the channel. Recent accomplishments and present critical issues are discussed in the presentation.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-TUPME014
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WEPRO101	A Compact Superconducting 330 MeV Proton Gantry for Radiotherapy and Computed Tomography	proton, dipole, target, superconducting-magnet	2202
	D.J. Holder Cockcroft Institute, Warrington, Cheshire, United Kingdom A.F. Green, H.L. Owen UMAN, Manchester, United Kingdom
	Funding: Work supported by STFC Cockcroft Institute Grant No. ST/G008248/1 The primary advantage of proton beam therapy as a cancer treatment is its ability to maximize the radiation dose delivered to the target volume and minimize the dose to surrounding healthy tissue, due to the inherently narrow Bragg peak at the end of the proton range. This can be further enhanced by imaging the target volume and surrounding tissues using proton Computed Tomography (pCT), which directly measures the energy loss from individual protons to infer the tissue density. Proton energies up to 330 MeV are required for pCT. We describe a superconducting gantry design which can deliver protons for both therapy and pCT with a similar size to existing treatment gantries. The use of ten identical combined-function superconducting dipole magnets minimizes the weight and technical development required. Based on experience with superconducting magnets for carbon gantries it should be possible to change the magnetic field sufficiently quickly to perform spot-scanning over successive layers without inducing quenching. It is envisaged that a combination of cryogenic cooling and cryogen-free cooling will be used to achieve the required operating temperature for the magnet windings.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-WEPRO101
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WEPRI083	The SIS100 Superconducting Fast Ramped Dipole Magnet	dipole, operation, controls, quadrupole	2681
	E.S. Fischer, A. Bleile, J.P. Meier, A. Mierau, P. Schnizer GSI, Darmstadt, Germany P.G. Akishin JINR, Dubna, Moscow Region, Russia
	The first dipole magnet of the superconducting SIS100 accelerator was delivered by industry and its thermodynamic, electrical and magnetic field performance was measured. We describe the build of the test facility, the infrastructure and its performance, outline the chosen measurement methods along with the optimisation of the magnet end required for obtaining the requested integral field quality. The measured ac loss parameters will be discussed in respect of the possible operation performance of the whole machine, the relevant cooling conditions of the main dipole magnet.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-WEPRI083
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WEPRI097	STATUS OF 11 T 2-IN-1 Nb3Sn DIPOLE DEVELOPMENT FOR LHC	dipole, status, luminosity, lattice	2722
	A.V. Zlobin, N. Andreev, G. Apollinari, E.Z. Barzi, R. Bossert, M. Buehler, G. Chlachidze, J. DiMarco, A. Nobrega, I. Novitski, D. Turrioni, G. Velev Fermilab, Batavia, Illinois, USA B. Auchmann, M. Karppinen, L. Rossi, D. Smekens CERN, Geneva, Switzerland
	Funding: Work is supported by Fermi Research Alliance, LLC, under contract No. DE-AC02-07CH11359 with the U.S. Department of Energy and European Commission under FP7 project HiLumi LHC, GA no.284404 The LHC upgrade plans foresee installation of additional collimators in the LHC lattice. To provide the necessary longitudinal space for these collimators, shorter and stronger Nb3Sn dipoles compatible with the LHC lattice and main systems could be used. This paper describes the design and status of the twin-aperture Nb3Sn dipole being developed by FNAL and CERN for the LHC, and reports test results of two collared coils to be used in the first 1 m long twin-aperture dipole model.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-WEPRI097
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THPRO057	Advanced Magnetic Field Description and Measurements on Curved Accelerator Magnets	multipole, dipole, operation, quadrupole	3002
	P. Schnizer, E.S. Fischer, A. Mierau GSI, Darmstadt, Germany P.G. Akishin JINR, Dubna, Moscow Region, Russia B. Schnizer TUG/ITP, Graz, Austria
	The SIS100 accelerator will be built within the first realisation phase of the FAIR project. The series production of its superconducting bending magnets was started without any test model in 2013. This time saving strategy requires a careful investigation of the magnetic field quality for the first manufactured dipole. The consequences of the curved magnet design was analysed developing advanced multipoles for elliptical and toroidal magnet geometries. We present the theoretical results together with measured data obtained for the first of series dipole. A description of the rotating coil probe based measurement method will be given together with the achieved field quality as well as an estimation of the limits of the chosen field representation and its beam dynamics interpretation.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPRO057
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Paper

Title

Other Keywords

Page

TUPRO078

AREAL Solenoid, Dipole and Steering Magnets Design and Performance

dipole, solenoid, electron, simulation

1223

A.V. Tsakanian, H. Gagiyan, A.A. Gevorgyan, B. Grigoryan, V.G. Khachatryan, M. Manukyan, T.H. Mkrtchyan, S. Naghdalyan, A.S. Simonyan, V. V. Vardanyan
CANDLE SRI, Yerevan, Armenia

The AREAL solenoid, dipole and corrector magnets design, simulations and performance are presented. A solenoid magnet will be used for the focusing of the low energy (E~5MeV) electron beam after RF gun as well as in the beam diagnostic section. The magnetic iron cover of solenoid provides return path for magnetic field screening effectively the field in the outer space and concentrating it inside solenoid gap. The dipole magnet is part of the spectrometer for beam energy spread measurements. An Iron-free corrector magnet design allows independent horizontal and vertical beam steering. The design optimization and magnetic field calculations are performed using CST-EM Studio. A good agreement between measurements and simulations is obtained.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-TUPRO078

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPRO082

Shape Optimization for the ESRF II Magnets

multipole, quadrupole, software, lattice

1232

G. Le Bec, J. Chavanne, P. N'gotta
ESRF, Grenoble, France

Magnets are a keystone of the ESRF upgrade programme. The specifications of the magnets of the ESRF II lattice are stringent: high gradients, extended Good Field Region (GFR) and vertical gaps large enough for the X-ray beam ports. The magnet design approach is presented here. Shape optimization of the magnet poles is systematically used. The magnet design is treated as an ill-posed, non linear, constrained problem. Iterative algorithms have been developed; the algorithms converge in less than 10 iterations, leading to very short computation time. This design method has been applied to high gradient quadrupole magnets. The shape optimization leads to original pole profiles.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-TUPRO082

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPRO113

Design and Measurement of a Low-energy Tunable Permanent Magnet Quadrupole Prototype

quadrupole, permanent-magnet, linear-collider, collider

1316

B.J.A. Shepherd, J.A. Clarke, P. Wadhwa
STFC/DL/ASTeC, Daresbury, Warrington, Cheshire, United Kingdom
A. Bartalesi, M. Modena, M. Struik
CERN, Geneva, Switzerland
N.A. Collomb
STFC/DL, Daresbury, Warrington, Cheshire, United Kingdom

The 42 km long CLIC Drive Beam Decelerator (DBD) will decelerate beams of electrons from 2.4 GeV to 240 MeV. ASTeC in collaboration with CERN has developed a novel type of tunable permanent magnet quadrupole for the DBD. Two versions of the design were produced, for the high-energy and low-energy ends of the DBD respectively. This paper outlines the design of the low-energy version, which has a tuning range of 3.5-43 T/m. A prototype was built at Daresbury Laboratory (DL) in 2013, and extensive magnetic measurements were carried out at DL.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-TUPRO113

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPRO115

Progress on the Dipole Magnet for a Rapid Cycling Synchrotron

dipole, simulation, synchrotron, feedback

1322

H. Witte, J.S. Berg
BNL, Upton, Long Island, New York, USA
M.L. Lopes
Fermilab, Batavia, Illinois, USA

Funding: Work supported by Brookhaven Science Associates, LC under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy.
A rapid cycling hybrid synchrotron has been proposed for the acceleration of muons from 375 to 750 GeV. The bending in a hybrid synchrotron is created with interleaved cold and warm dipoles; the warm dipoles modulate the average bending field for the different particle momenta. A key challenge for the warm dipole magnets is the ramp rate, which is equivalent to frequencies of 400-1000 Hz. Recently a design has been suggested which employs 6.5 Si steel for the return yoke and FeCo for the poles. In simulations the design has shown a good performance (up to 2T) due to the FeCo and acceptable power losses by employing SiFe with a high Si content. The paper discusses the effect of eddy currents induced in the laminations and hysteresis effects on the field quality.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-TUPRO115

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPME014

Development of Six-dimensional Helical Muon Beam Cooling Channel for Muon Colliders

emittance, solenoid, cavity, collider

1373

K. Yonehara
Fermilab, Batavia, Illinois, USA

A six-dimensional (6D) helical muon beam cooling channel (HCC) has been developed for a last decade. The practical HCC lattice parameters were optimized for the cooling performance in theoretical and numerical simulations. The HCC design group has been formed and has begun the machine development to realize the channel. Recent accomplishments and present critical issues are discussed in the presentation.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-TUPME014

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPRO101

A Compact Superconducting 330 MeV Proton Gantry for Radiotherapy and Computed Tomography

proton, dipole, target, superconducting-magnet

2202

D.J. Holder
Cockcroft Institute, Warrington, Cheshire, United Kingdom
A.F. Green, H.L. Owen
UMAN, Manchester, United Kingdom

Funding: Work supported by STFC Cockcroft Institute Grant No. ST/G008248/1
The primary advantage of proton beam therapy as a cancer treatment is its ability to maximize the radiation dose delivered to the target volume and minimize the dose to surrounding healthy tissue, due to the inherently narrow Bragg peak at the end of the proton range. This can be further enhanced by imaging the target volume and surrounding tissues using proton Computed Tomography (pCT), which directly measures the energy loss from individual protons to infer the tissue density. Proton energies up to 330 MeV are required for pCT. We describe a superconducting gantry design which can deliver protons for both therapy and pCT with a similar size to existing treatment gantries. The use of ten identical combined-function superconducting dipole magnets minimizes the weight and technical development required. Based on experience with superconducting magnets for carbon gantries it should be possible to change the magnetic field sufficiently quickly to perform spot-scanning over successive layers without inducing quenching. It is envisaged that a combination of cryogenic cooling and cryogen-free cooling will be used to achieve the required operating temperature for the magnet windings.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-WEPRO101

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPRI083

The SIS100 Superconducting Fast Ramped Dipole Magnet

dipole, operation, controls, quadrupole

2681

E.S. Fischer, A. Bleile, J.P. Meier, A. Mierau, P. Schnizer
GSI, Darmstadt, Germany
P.G. Akishin
JINR, Dubna, Moscow Region, Russia

The first dipole magnet of the superconducting SIS100 accelerator was delivered by industry and its thermodynamic, electrical and magnetic field performance was measured. We describe the build of the test facility, the infrastructure and its performance, outline the chosen measurement methods along with the optimisation of the magnet end required for obtaining the requested integral field quality. The measured ac loss parameters will be discussed in respect of the possible operation performance of the whole machine, the relevant cooling conditions of the main dipole magnet.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-WEPRI083

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPRI097

STATUS OF 11 T 2-IN-1 Nb3Sn DIPOLE DEVELOPMENT FOR LHC

dipole, status, luminosity, lattice

2722

A.V. Zlobin, N. Andreev, G. Apollinari, E.Z. Barzi, R. Bossert, M. Buehler, G. Chlachidze, J. DiMarco, A. Nobrega, I. Novitski, D. Turrioni, G. Velev
Fermilab, Batavia, Illinois, USA
B. Auchmann, M. Karppinen, L. Rossi, D. Smekens
CERN, Geneva, Switzerland

Funding: Work is supported by Fermi Research Alliance, LLC, under contract No. DE-AC02-07CH11359 with the U.S. Department of Energy and European Commission under FP7 project HiLumi LHC, GA no.284404
The LHC upgrade plans foresee installation of additional collimators in the LHC lattice. To provide the necessary longitudinal space for these collimators, shorter and stronger Nb3Sn dipoles compatible with the LHC lattice and main systems could be used. This paper describes the design and status of the twin-aperture Nb3Sn dipole being developed by FNAL and CERN for the LHC, and reports test results of two collared coils to be used in the first 1 m long twin-aperture dipole model.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-WEPRI097

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPRO057

Advanced Magnetic Field Description and Measurements on Curved Accelerator Magnets

multipole, dipole, operation, quadrupole

3002

P. Schnizer, E.S. Fischer, A. Mierau
GSI, Darmstadt, Germany
P.G. Akishin
JINR, Dubna, Moscow Region, Russia
B. Schnizer
TUG/ITP, Graz, Austria

The SIS100 accelerator will be built within the first realisation phase of the FAIR project. The series production of its superconducting bending magnets was started without any test model in 2013. This time saving strategy requires a careful investigation of the magnetic field quality for the first manufactured dipole. The consequences of the curved magnet design was analysed developing advanced multipoles for elliptical and toroidal magnet geometries. We present the theoretical results together with measured data obtained for the first of series dipole. A description of the rotating coil probe based measurement method will be given together with the achieved field quality as well as an estimation of the limits of the chosen field representation and its beam dynamics interpretation.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPRO057

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)