HB2016 - Table of Session: WEA5 (Working Group A

Paper

Title

Page

Beam-Dynamics Issues in the FCC

373

F. Zimmermann, W. Bartmann, M. Benedikt, M.I. Besana, R. Bruce, O.S. Brüning, X. Buffat, F. Burkart, H. Burkhardt, S. Calatroni, F. Cerutti, S.D. Fartoukh, M. Fiascaris, C. Garion, B. Goddard, B.J. Holzer, W. Höfle, J.M. Jowett, R. Kersevan, R. Martin, L. Mether, A. Milanese, T. Pieloni, S. Redaelli, G. Rumolo, B. Salvant, M. Schaumann, D. Schulte, E.N. Shaposhnikova, L.S. Stoel, C. Tambasco, R. Tomás, D. Tommasini
CERN, Geneva, Switzerland
J.L. Abelleira, E. Cruz Alaniz, A. Seryi
JAI, Oxford, United Kingdom
R.B. Appleby
UMAN, Manchester, United Kingdom
P. Bambade, A. Faus-Golfe, J. Molson
LAL, Orsay, France
J. Barranco
EPFL, Lausanne, Switzerland
J.-L. Biarrotte, A. Lachaize
IPN, Orsay, France
O. Boine-Frankenheim, U. Niedermayer
TEMF, TU Darmstadt, Darmstadt, Germany
M. Boscolo, F. Collamati, A. Drago
INFN/LNF, Frascati (Roma), Italy
A. Chancé
CEA, Gif-sur-Yvette, France
B. Dalena, J. Payet
CEA/IRFU, Gif-sur-Yvette, France
J.D. Fox, G. Stupakov
SLAC, Menlo Park, California, USA
G. Guillermo Cantón
CINVESTAV, Mérida, Mexico
S. Khan, B. Riemann
DELTA, Dortmund, Germany
V. Kornilov
GSI, Darmstadt, Germany
T.M. Mitsuhashi, K. Ohmi
KEK, Ibaraki, Japan

Funding: European Commission under the Capacities 7th Framework Programme project EuCARD-2, grant agreement 312453, and the HORIZON 2020 project EuroCirCol, grant agreement 654305. Also by the German BMBF.
The international Future Circular Collider (FCC) study is designing hadron, lepton and lepton-hadron colliders based on a new 100 km tunnel in the Geneva region. The main focus and ultimate goal of the study are high-luminosity proton-proton collisions at a centre-of-mass energy of 100 TeV, using 16 T Nb3Sn dipole magnets. Specific FCC beam dynamics issues are related to the large circumference, the high brightness - made available by radiation damping -, the small geometric emittance, unprecedented collision energy and luminosity, the huge amount of energy stored in the beam, large synchrotron radiation power, plus the injection scenarios. In addition to the FCC-hh proper, also a High-Energy LHC (HE-LHC) is being explored, using the FCC-hh magnet technology in the existing LHC tunnel, which can yield a centre-of-mass energy around 25 TeV.

Slides WEAM5X01 [10.402 MB]

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reference for this paper ※ DOI:10.18429/JACoW-HB2016-WEAM5X01

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WEAM6X01

Studies of High Intensity Proton FFAGs at RAL

379

C.R. Prior
STFC/RAL/ISIS, Chilton, Didcot, Oxon, United Kingdom

The paper describes studies of high intensity proton accelerators for a next-generation source of short-pulse spallation neutrons. Along with conventional designs using rapid cycling synchrotrons, the long-term nature of the project provides scope for novel accelerator designs and developing technological ideas. A range of FFAG options is under consideration for the main spallation driver. Theory and simulation in the UK are combined with experimental studies of FFAGs in Japan, and a small prototype FFAG ring is planned to go on the FETS injector at RAL for essential R&D. The paper covers the broad scope of the programme and details the success of the study to date.

Slides WEAM6X01 [12.105 MB]

DOI •

reference for this paper ※ DOI:10.18429/JACoW-HB2016-WEAM6X01

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WEAM7X01

Nonlinear Focusing in IOTA for Space-Charge Compensation and Landau Damping

S. Nagaitsev
Fermilab, Batavia, Illinois, USA

Funding: This research is supported by FRA, LLC for the U. S. Department of Energy under contract DE-AC02-07CH11359.
In 1967 Edwin McMillan proposed the first stable nonlinear accelerator focusing system (Report UCRL-17795). Since then, there have been several additional theoretical proposals on how to implement a practical nonlinear accelerator focusing system, but none were ever tested experimentally. This presentation will describe several practical proposals to implement nonlinear focusing elements in the Fermilab IOTA ring. These nonlinear elements would employ magnetic fields and electron lenses to create a large betatron tune spread and may help increase beam intensities in present and future accelerators, by providing space-charge compensation and increasing Landau damping.

Slides WEAM7X01 [7.950 MB]

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WEAM8X01

Two-plane Painting Injection in BRing of HIAF Project

W.P. Chai
IMP/CAS, Lanzhou, People's Republic of China

HIAF-BRing is a high intensity heavy ion booster ring in which the particle number is designed up to 1.0·10¹¹ (238U³⁴⁺). In order to prevent the stored beam from being killed immediately by the electron-ion interaction (while accumulating with electron-cooling) and strong space charge effect, the incoming iLinac beam must be accumulated as fast as possible. The two-plane painting injection is consequently adopted. In this talk, the detailed mechanism of the two-plane painting injection is shown, the orbit design and simulation is performed, and the injection parameters are optimized according to the simulation results using PSO (particle swarm optimization) algorism.

Slides WEAM8X01 [3.756 MB]

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Paper	Title	Page
WEAM5X01	Beam-Dynamics Issues in the FCC	373
	F. Zimmermann, W. Bartmann, M. Benedikt, M.I. Besana, R. Bruce, O.S. Brüning, X. Buffat, F. Burkart, H. Burkhardt, S. Calatroni, F. Cerutti, S.D. Fartoukh, M. Fiascaris, C. Garion, B. Goddard, B.J. Holzer, W. Höfle, J.M. Jowett, R. Kersevan, R. Martin, L. Mether, A. Milanese, T. Pieloni, S. Redaelli, G. Rumolo, B. Salvant, M. Schaumann, D. Schulte, E.N. Shaposhnikova, L.S. Stoel, C. Tambasco, R. Tomás, D. Tommasini CERN, Geneva, Switzerland J.L. Abelleira, E. Cruz Alaniz, A. Seryi JAI, Oxford, United Kingdom R.B. Appleby UMAN, Manchester, United Kingdom P. Bambade, A. Faus-Golfe, J. Molson LAL, Orsay, France J. Barranco EPFL, Lausanne, Switzerland J.-L. Biarrotte, A. Lachaize IPN, Orsay, France O. Boine-Frankenheim, U. Niedermayer TEMF, TU Darmstadt, Darmstadt, Germany M. Boscolo, F. Collamati, A. Drago INFN/LNF, Frascati (Roma), Italy A. Chancé CEA, Gif-sur-Yvette, France B. Dalena, J. Payet CEA/IRFU, Gif-sur-Yvette, France J.D. Fox, G. Stupakov SLAC, Menlo Park, California, USA G. Guillermo Cantón CINVESTAV, Mérida, Mexico S. Khan, B. Riemann DELTA, Dortmund, Germany V. Kornilov GSI, Darmstadt, Germany T.M. Mitsuhashi, K. Ohmi KEK, Ibaraki, Japan
	Funding: European Commission under the Capacities 7th Framework Programme project EuCARD-2, grant agreement 312453, and the HORIZON 2020 project EuroCirCol, grant agreement 654305. Also by the German BMBF. The international Future Circular Collider (FCC) study is designing hadron, lepton and lepton-hadron colliders based on a new 100 km tunnel in the Geneva region. The main focus and ultimate goal of the study are high-luminosity proton-proton collisions at a centre-of-mass energy of 100 TeV, using 16 T Nb3Sn dipole magnets. Specific FCC beam dynamics issues are related to the large circumference, the high brightness - made available by radiation damping -, the small geometric emittance, unprecedented collision energy and luminosity, the huge amount of energy stored in the beam, large synchrotron radiation power, plus the injection scenarios. In addition to the FCC-hh proper, also a High-Energy LHC (HE-LHC) is being explored, using the FCC-hh magnet technology in the existing LHC tunnel, which can yield a centre-of-mass energy around 25 TeV.
	Slides WEAM5X01 [10.402 MB]
DOI •	reference for this paper ※ DOI:10.18429/JACoW-HB2016-WEAM5X01
Export •	reference for this paper to ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEAM6X01	Studies of High Intensity Proton FFAGs at RAL	379
	C.R. Prior STFC/RAL/ISIS, Chilton, Didcot, Oxon, United Kingdom
	The paper describes studies of high intensity proton accelerators for a next-generation source of short-pulse spallation neutrons. Along with conventional designs using rapid cycling synchrotrons, the long-term nature of the project provides scope for novel accelerator designs and developing technological ideas. A range of FFAG options is under consideration for the main spallation driver. Theory and simulation in the UK are combined with experimental studies of FFAGs in Japan, and a small prototype FFAG ring is planned to go on the FETS injector at RAL for essential R&D. The paper covers the broad scope of the programme and details the success of the study to date.
	Slides WEAM6X01 [12.105 MB]
DOI •	reference for this paper ※ DOI:10.18429/JACoW-HB2016-WEAM6X01
Export •	reference for this paper to ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEAM7X01	Nonlinear Focusing in IOTA for Space-Charge Compensation and Landau Damping
	S. Nagaitsev Fermilab, Batavia, Illinois, USA
	Funding: This research is supported by FRA, LLC for the U. S. Department of Energy under contract DE-AC02-07CH11359. In 1967 Edwin McMillan proposed the first stable nonlinear accelerator focusing system (Report UCRL-17795). Since then, there have been several additional theoretical proposals on how to implement a practical nonlinear accelerator focusing system, but none were ever tested experimentally. This presentation will describe several practical proposals to implement nonlinear focusing elements in the Fermilab IOTA ring. These nonlinear elements would employ magnetic fields and electron lenses to create a large betatron tune spread and may help increase beam intensities in present and future accelerators, by providing space-charge compensation and increasing Landau damping.
	Slides WEAM7X01 [7.950 MB]
Export •	reference for this paper to ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEAM8X01	Two-plane Painting Injection in BRing of HIAF Project
	W.P. Chai IMP/CAS, Lanzhou, People's Republic of China
	HIAF-BRing is a high intensity heavy ion booster ring in which the particle number is designed up to 1.0·10¹¹ (238U³⁴⁺). In order to prevent the stored beam from being killed immediately by the electron-ion interaction (while accumulating with electron-cooling) and strong space charge effect, the incoming iLinac beam must be accumulated as fast as possible. The two-plane painting injection is consequently adopted. In this talk, the detailed mechanism of the two-plane painting injection is shown, the orbit design and simulation is performed, and the injection parameters are optimized according to the simulation results using PSO (particle swarm optimization) algorism.
	Slides WEAM8X01 [3.756 MB]
Export •	reference for this paper to ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)