IPAC2016 - List of Authors (Raimondi, P.)

Paper	Title	Page
TUPMB001	Magnets for the ESRF-EBS Project	1096
	C. Benabderrahmane, J.C. Biasci, J-F. B. Bouteille, J. Chavanne, L. Farvacque, L. Goirand, G. Le Bec, S.M. Liuzzo, P. Raimondi, V. Villar ESRF, Grenoble, France
	A major upgrade project known as ESRF-EBS, Extremely Brilliant Source is planned at the European Synchrotron Radiation Facility (ESRF) in the coming years. A new storage ring will be built, aiming to decrease the horizontal emittance and to improve the brilliance and coherence of the X-ray beams. The lattice of the new storage ring relies on magnets with demanding specifications: dipoles with longitudinal gradient (field ranging from 0.17 T up to 0.67 T), strong quadrupoles (up to 90 T/m), combined function dipole-quadrupoles with high gradient (0.57 T and 37 T/m), strong sextupoles and octupoles. The design of these magnets is based on innovative solutions; in particular, the longitudinal gradient dipoles are permanent magnets and the combined dipole-quadrupoles are single-sided devices. The design of the magnets is finished and prototypes of innovative magnets have been built. The procurement of the magnets has started. Call for Tenders have been sent to a pre-qualified short list of magnet manufacturers. The longitudinal gradient dipoles will be assembled and measured in house. The design of the magnets, the prototype results and procurement status will be presented.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-TUPMB001
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TUPMY001	Very Low Emittance Muon Beam using Positron Beam on Target	1536
	M. Antonelli, M.E. Biagini, M. Boscolo, A. Variola INFN/LNF, Frascati (Roma), Italy E. Bagli INFN-Ferrara, Ferrara, Italy G. Cavoto INFN-Roma, Roma, Italy P. Raimondi ESRF, Grenoble, France
	Muon beams are customarily obtained via K/π decays produced in proton interaction on target. In this paper we investigate the possibility to produce low emittance muon beams from electron-positron collisions at centre-of-mass energy just above the μ⁺{+}μ⁺{-} production threshold with maximal beam energy asymmetry, corresponding to a positron beam of about 45 GeV interacting on electrons on target. Performances on both amorphous and crystal target are presented, and the general scheme for the muon production will be given. We present the main features of this scheme with a first preliminary evaluation of the performances that could be achieved by a multi-TeV muon collider.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-TUPMY001
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TUPOR001	Lifetime Improvements with a Harmonic RF System for the ESRF EBS	1644
	N. Carmignani, L. Farvacque, J. Jacob, S.M. Liuzzo, B. Nash, T.P. Perron, P. Raimondi, R. Versteegen, S.M. White ESRF, Grenoble, France
	A third-harmonic RF system to increase the Touschek lifetime is under study for the European Synchrotron Radiation Facility (ESRF) Extremely Brilliant Source (EBS) storage ring, in particular for modes with high current per bunch. Multi-particle simulations have been done to study the bunch lengthening and shape in presence of inductive impedance and a third-harmonic RF system.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-TUPOR001
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WEXA01	The ESRF Low-emittance Upgrade	2023
	P. Raimondi ESRF, Grenoble, France
	This talk focuses on novel aspects of the lattice design, describes the technical solutions that have been found for meeting the design goals (including the use of permanent magnet dipoles), outlines the main challenges that will be faced in commissioning and operating the new lattice in a very demanding parameter regime, and discusses how it is hoped to maximize eventual benefits for users while minimizing disruption during the upgrade process.
	Slides WEXA01 [23.005 MB]
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-WEXA01
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WEPOW005	Updates on Lattice Modeling and Tuning for the ESRF-EBS Lattice.	2818
	S.M. Liuzzo, N. Carmignani, J. Chavanne, L. Farvacque, G. Le Bec, B. Nash, P. Raimondi, R. Versteegen, S.M. White ESRF, Grenoble, France
	The ESRF-EBS lattice model is updated to include the effect of magnetic lengths in dipoles, quadrupoles, sextupoles and combined function magnets. The effect of this modification and the updates to the injection cell are considered with particular focus on injection efficiency and Touschek lifetime. The solutions to introduce new sources of radiation suitable for the existing bending magnet radiation beamlines are also presented.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-WEPOW005
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WEPOW006	Hybrid Multi Bend Achromat at 3 GeV for Future 4th Generation Light Sources	2822
	S.M. Liuzzo, D. Einfeld, L. Farvacque, P. Raimondi ESRF, Grenoble, France
	Starting from the Hybrid Multi Bend Achromat (HMBA) lattice designed for the 6GeV ESRF-EBS we rescale the lattice energy to 3GeV and optimize the lattice parameters to achieve dynamic apertures sufficient for injection and lifetimes of more than 7h without errors. The rescaling results to an emittance of roughly 140pmrad. Further optimizations of bending magnets longitudinal gradient, optics and sextupole fields show the possibility to further decrease emittance and increase the DA and lifetime. A comparison with other lattice designs is also presented.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-WEPOW006
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WEPOW044	Study of a Double Triple Bend Achromat (DTBA) Lattice for a 3 GeV Light Source	2940
	A. Alekou, R. Bartolini JAI, Oxford, United Kingdom A. Alekou, R. Bartolini Oxford University, Physics Department, Oxford, Oxon, United Kingdom A. Alekou, R. Bartolini, T. Pulampong, R.P. Walker DLS, Oxfordshire, United Kingdom N. Carmignani, S.M. Liuzzo, P. Raimondi ESRF, Grenoble, France
	Starting from the concepts of the Hybrid Multi Bend Achromat (HMBA) lattice developed at ESRF and of the Double-Double Bend Achromat (DDBA) lattice developed at Diamond, we present a new cell that includes all the advantages of the two designs. The resulting Double Triple Bend Achromat (DTBA) cell allows for a natural horizontal emittance of less than 100 pm with a large dynamic aperture and lifetime. It includes two straight sections, for insertion devices, five and three meters long. The lattice is consistent with the engineering design developed for the ESRF-EBS lattice and the layout and user requirements of Diamond. The characteristics of the cell are presented together with the results of the optimisation process.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-WEPOW044
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THPMR015	RCDS Optimizations for the ESRF Storage Ring	3420
	S.M. Liuzzo, N. Carmignani, L. Farvacque, B. Nash, T.P. Perron, P. Raimondi, R. Versteegen, S.M. White ESRF, Grenoble, France
	The Robust Conjugate Direction Search (RCDS)* optimizer is applied for online optimizations of the ESRF accelerators. This paper presents the successful application of the algorithm in reducing vertical emittance, improving injection efficiency and increasing lifetime. A new set of sextupole settings to increase chromaticity has been obtained with lifetimes comparable to the existing one. This allows to run with double current in a single bunch, and unifies the optics for few bunch (except 4x10 bunches) and multi-bunch modes. * X. Huang, J. Corbett, J. Safranek, J. Wu, "An algorithm for online optimization of accelerators", Nucl. Instr. Methods, A 726 (2013) 77-83.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-THPMR015
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THPMR016	Horizontal Phase Space Shaping for Optimized Off-axis Injection Efficiency	3424
	S.M. White, S. Lagarde, S.M. Liuzzo, B. Ogier, T.P. Perron, P. Raimondi ESRF, Grenoble, France
	With the introduction of top-up operation at the ESRF it becomes important to reduce as much as possible any kind of perturbation seen by the users during injection. For this purpose, a novel technique to improve injection efficiency by shaping the horizontal beam phase space to better match the storage ring acceptance and hence reduce the duration of injections was developed. Theoretical concept, simulations and first experimental results are presented.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-THPMR016
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

Magnets for the ESRF-EBS Project

1096

C. Benabderrahmane, J.C. Biasci, J-F. B. Bouteille, J. Chavanne, L. Farvacque, L. Goirand, G. Le Bec, S.M. Liuzzo, P. Raimondi, V. Villar
ESRF, Grenoble, France

A major upgrade project known as ESRF-EBS, Extremely Brilliant Source is planned at the European Synchrotron Radiation Facility (ESRF) in the coming years. A new storage ring will be built, aiming to decrease the horizontal emittance and to improve the brilliance and coherence of the X-ray beams. The lattice of the new storage ring relies on magnets with demanding specifications: dipoles with longitudinal gradient (field ranging from 0.17 T up to 0.67 T), strong quadrupoles (up to 90 T/m), combined function dipole-quadrupoles with high gradient (0.57 T and 37 T/m), strong sextupoles and octupoles. The design of these magnets is based on innovative solutions; in particular, the longitudinal gradient dipoles are permanent magnets and the combined dipole-quadrupoles are single-sided devices. The design of the magnets is finished and prototypes of innovative magnets have been built. The procurement of the magnets has started. Call for Tenders have been sent to a pre-qualified short list of magnet manufacturers. The longitudinal gradient dipoles will be assembled and measured in house. The design of the magnets, the prototype results and procurement status will be presented.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-TUPMB001

Export •

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TUPMY001

Very Low Emittance Muon Beam using Positron Beam on Target

1536

M. Antonelli, M.E. Biagini, M. Boscolo, A. Variola
INFN/LNF, Frascati (Roma), Italy
E. Bagli
INFN-Ferrara, Ferrara, Italy
G. Cavoto
INFN-Roma, Roma, Italy
P. Raimondi
ESRF, Grenoble, France

Muon beams are customarily obtained via K/π decays produced in proton interaction on target. In this paper we investigate the possibility to produce low emittance muon beams from electron-positron collisions at centre-of-mass energy just above the μ⁺{+}μ⁺{-} production threshold with maximal beam energy asymmetry, corresponding to a positron beam of about 45 GeV interacting on electrons on target. Performances on both amorphous and crystal target are presented, and the general scheme for the muon production will be given. We present the main features of this scheme with a first preliminary evaluation of the performances that could be achieved by a multi-TeV muon collider.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-TUPMY001

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TUPOR001

Lifetime Improvements with a Harmonic RF System for the ESRF EBS

1644

N. Carmignani, L. Farvacque, J. Jacob, S.M. Liuzzo, B. Nash, T.P. Perron, P. Raimondi, R. Versteegen, S.M. White
ESRF, Grenoble, France

A third-harmonic RF system to increase the Touschek lifetime is under study for the European Synchrotron Radiation Facility (ESRF) Extremely Brilliant Source (EBS) storage ring, in particular for modes with high current per bunch. Multi-particle simulations have been done to study the bunch lengthening and shape in presence of inductive impedance and a third-harmonic RF system.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-TUPOR001

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WEXA01

The ESRF Low-emittance Upgrade

2023

P. Raimondi
ESRF, Grenoble, France

This talk focuses on novel aspects of the lattice design, describes the technical solutions that have been found for meeting the design goals (including the use of permanent magnet dipoles), outlines the main challenges that will be faced in commissioning and operating the new lattice in a very demanding parameter regime, and discusses how it is hoped to maximize eventual benefits for users while minimizing disruption during the upgrade process.

Slides WEXA01 [23.005 MB]

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-WEXA01

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WEPOW005

Updates on Lattice Modeling and Tuning for the ESRF-EBS Lattice.

2818

S.M. Liuzzo, N. Carmignani, J. Chavanne, L. Farvacque, G. Le Bec, B. Nash, P. Raimondi, R. Versteegen, S.M. White
ESRF, Grenoble, France

The ESRF-EBS lattice model is updated to include the effect of magnetic lengths in dipoles, quadrupoles, sextupoles and combined function magnets. The effect of this modification and the updates to the injection cell are considered with particular focus on injection efficiency and Touschek lifetime. The solutions to introduce new sources of radiation suitable for the existing bending magnet radiation beamlines are also presented.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-WEPOW005

Export •

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

WEPOW006

Hybrid Multi Bend Achromat at 3 GeV for Future 4th Generation Light Sources

2822

S.M. Liuzzo, D. Einfeld, L. Farvacque, P. Raimondi
ESRF, Grenoble, France

Starting from the Hybrid Multi Bend Achromat (HMBA) lattice designed for the 6GeV ESRF-EBS we rescale the lattice energy to 3GeV and optimize the lattice parameters to achieve dynamic apertures sufficient for injection and lifetimes of more than 7h without errors. The rescaling results to an emittance of roughly 140pmrad. Further optimizations of bending magnets longitudinal gradient, optics and sextupole fields show the possibility to further decrease emittance and increase the DA and lifetime. A comparison with other lattice designs is also presented.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-WEPOW006

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WEPOW044

Study of a Double Triple Bend Achromat (DTBA) Lattice for a 3 GeV Light Source

2940

A. Alekou, R. Bartolini
JAI, Oxford, United Kingdom
A. Alekou, R. Bartolini
Oxford University, Physics Department, Oxford, Oxon, United Kingdom
A. Alekou, R. Bartolini, T. Pulampong, R.P. Walker
DLS, Oxfordshire, United Kingdom
N. Carmignani, S.M. Liuzzo, P. Raimondi
ESRF, Grenoble, France

Starting from the concepts of the Hybrid Multi Bend Achromat (HMBA) lattice developed at ESRF and of the Double-Double Bend Achromat (DDBA) lattice developed at Diamond, we present a new cell that includes all the advantages of the two designs. The resulting Double Triple Bend Achromat (DTBA) cell allows for a natural horizontal emittance of less than 100 pm with a large dynamic aperture and lifetime. It includes two straight sections, for insertion devices, five and three meters long. The lattice is consistent with the engineering design developed for the ESRF-EBS lattice and the layout and user requirements of Diamond. The characteristics of the cell are presented together with the results of the optimisation process.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-WEPOW044

Export •

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THPMR015

RCDS Optimizations for the ESRF Storage Ring

3420

S.M. Liuzzo, N. Carmignani, L. Farvacque, B. Nash, T.P. Perron, P. Raimondi, R. Versteegen, S.M. White
ESRF, Grenoble, France

The Robust Conjugate Direction Search (RCDS)* optimizer is applied for online optimizations of the ESRF accelerators. This paper presents the successful application of the algorithm in reducing vertical emittance, improving injection efficiency and increasing lifetime. A new set of sextupole settings to increase chromaticity has been obtained with lifetimes comparable to the existing one. This allows to run with double current in a single bunch, and unifies the optics for few bunch (except 4x10 bunches) and multi-bunch modes.
* X. Huang, J. Corbett, J. Safranek, J. Wu, "An algorithm for online optimization of accelerators", Nucl. Instr. Methods, A 726 (2013) 77-83.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-THPMR015

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THPMR016

Horizontal Phase Space Shaping for Optimized Off-axis Injection Efficiency

3424

S.M. White, S. Lagarde, S.M. Liuzzo, B. Ogier, T.P. Perron, P. Raimondi
ESRF, Grenoble, France

With the introduction of top-up operation at the ESRF it becomes important to reduce as much as possible any kind of perturbation seen by the users during injection. For this purpose, a novel technique to improve injection efficiency by shaping the horizontal beam phase space to better match the storage ring acceptance and hence reduce the duration of injections was developed. Theoretical concept, simulations and first experimental results are presented.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-THPMR016

Export •

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