IPAC2015 - List of Authors (Mikulec, B.)

Paper	Title	Page
MOPJE063	Orbit Correction in the CERN PS Booster	449
	M. McAteer, E. Benedetto, C. Carli, G.P. Di Giovanni, B. Mikulec, R. Tomás CERN, Geneva, Switzerland
	Funding: This project has received funding from the European Union’s Seventh Framework Programme for research, technological development and demonstration under grant agreement no (PITN-GA-2011-289485-OPAC). Prior to the Long Shutdown of 2013-2014 (LS1), control of the closed orbit in the four rings of the CERN PS Booster (PSB) was achieved by adjusting the alignment of several focusing quadrupoles. After a set of orbit corrector dipoles was installed, a major realignment campaign was undertaken to remove these intentional quadrupole offsets and any other magnet misalignments. This paper summarizes the effects of the magnet realignment on the closed orbit in the PSB and the results of closed orbit correction with corrector dipoles.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-MOPJE063
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THPF083	Painting Schemes for CERN PS Booster H⁻ Injection	3879
	J.L. Abelleira, W. Bartmann, E. Benedetto, C. Bracco, G.P. Di Giovanni, V. Forte, M. Kowalska, M. Meddahi, B. Mikulec, G. Rumolo CERN, Geneva, Switzerland V. Forte Université Blaise Pascal, Clermont-Ferrand, France M. Kowalska EPFL, Lausanne, Switzerland
	The present 50-MeV proton injection into the PS Booster will be replaced by a H⁻ charge exchange injection at 160 MeV to be provided by Linac 4. The higher energy will allow producing beams at higher brightness. A set of kicker magnets (KSW) will move the beam across the stripping foil to perform phase space painting in the horizontal plane to reduce space charge effects. The PSB must satisfy the different users with very different beams in terms of emittance and intensity. Therefore, the KSW waveforms must be adapted for each case to meet the beam characteristics while minimizing beam losses. Here we present the results of the simulations performed to optimise the injection system. A detailed analysis of the different painting schemes is discussed, including the effect of the working point on the painted beam, and variations in the offset of the injected beam.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-THPF083
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THPF087	New Shaving Scheme for Low-Intensity Beams in the CERN PS Booster and Feasibility at 160 MeV	3893
	M. Kowalska, E. Benedetto, V. Forte, B. Mikulec, G. Rumolo CERN, Geneva, Switzerland V. Forte Université Blaise Pascal, Clermont-Ferrand, France M. Kowalska EPFL, Lausanne, Switzerland
	The PS Booster is the first synchrotron in the CERN proton accelerator chain, serving all downstream machines. As part of the LHC Injector Upgrade Project, the PSB injection energy will increase from 50 MeV to 160 MeV and a new H⁻ charge-exchange injection scheme will be implemented. Beam losses are a concern due to the increased injection energy, and mitigation scenarios are under investigation. On the other hand it is desirable for low-intensity beams to have the possibility to precisely tailor sub-micron beam emittances through controlled scraping (transverse shaving process) towards a suitable aperture restriction. Challenges are the higher activation potential of the beam and the smaller transverse beam sizes around 160 MeV as compared to 63 MeV, at which the shaving is presently done. This paper describes the proposal of a new shaving scheme, more robust with respect to the steering errors and the choice of the working point, which localizes the scraping losses on the main PS Booster aperture restriction. The robustness of the new method, together with the results of simulations and measurements are discussed for the current (50 MeV) and future (160 MeV) situation.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-THPF087
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THPF088	CERN PS Booster Upgrade and LHC Beams Emittance	3897
	E. Benedetto, J.L. Abelleira, C. Bracco, V. Forte, B. Mikulec, G. Rumolo CERN, Geneva, Switzerland V. Forte Université Blaise Pascal, Clermont-Ferrand, France
	By increasing the CERN PS Booster injection energy from 50 MeV to 160 MeV, the LHC Injector Upgrade Project aims at producing twice as brighter beams for the LHC. Previous measurements showed a linear dependence of the transverse emittance with the beam intensity and space-charge simulations confirmed the linear scaling. This paper is discussing in detail the dependence on the longitudinal emittance and on the choice of the working point, with a special attention to the H⁻ injection process and to the beam dynamics in the first 5 ms, during the fall of the injection chicane bump.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-THPF088
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THPF090	Status and Plans for the Upgrade of the CERN PS Booster	3905
	K. Hanke, D. Aguglia, M.E. Angoletta, W. Bartmann, C. Bedel, E. Benedetto, S. Bertolasi, C. Bertone, J. Betz, T.W. Birtwistle, A. Blas, J. Borburgh, C. Bracco, A.C. Butterworth, E. Carlier, S. Chemli, P. Dahlen, A. Dallocchio, G.P. Di Giovanni, T. Dobers, A. Findlay, R. Froeschl, A. Funken, S. Gabourin, J.L. Grenard, D. Grenier, J. Hansen, D. Hay, J.-M. Lacroix, P. Le Roux, L.A. Lopez Hernandez, C. Martin, A. Masi, B. Mikulec, Y. Muttoni, A. Newborough, D. Nisbet, M.R. Obrecht, M.M. Paoluzzi, S. Pittet, B. Puccio, J. Tan, J. Vollaire, W.J.M. Weterings CERN, Geneva, Switzerland
	CERN’s Proton Synchrotron Booster (PSB) is undergoing a major upgrade program in the frame of the LHC Injectors Upgrade (LIU) project. During the first long LHC shutdown (LS1) some parts of the upgrade have already been implemented, and the machine has been successfully re-commissioned. More work is planned for the upcoming end-of-year technical stops, notably in 2016/17, while most of the upgrade is planned to take place during the second long LHC shutdown (LS2). We report on the upgrade items already completed and commissioned, the first Run 2 beam performance and give a status of the ongoing design and integration work.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-THPF090
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THPF093	Status of the LHC Injectors Upgrade (LIU) Project at CERN	3915
	M. Meddahi, J. Coupard, H. Damerau, A. Funken, S.S. Gilardoni, B. Goddard, K. Hanke, L. Kobzeva, A.M. Lombardi, D. Manglunki, S. Mataguez, B. Mikulec, G. Rumolo, E.N. Shaposhnikova, M. Vretenar CERN, Geneva, Switzerland
	CERN is currently carrying out an ambitious improvement programme of the full LHC Injectors chain in order to enable the delivery of beams with the challenging HL-LHC parameters. The LHC Injectors Upgrade project coordinates this massive upgrade program, and covers a new linac (Linac4 project) as well as upgrades to the Proton Synchrotron Booster, the Proton Synchrotron and Super Proton Synchrotron. The heavy ion injector chain is also included, adding the Linac3 and Low Energy Ion Ring to the list of accelerators concerned. The performance objectives and roadmap of the main upgrades will be presented, including the work status and outlook. The machine studies and milestones during LHC Run 2 will be discussed and a preliminary Long Shutdown 2 installation planning given. Finally, for the LHC Run 3, the beam performance across the full injector chain after all the upgrades will be estimated and the required commissioning stages outlined.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-THPF093
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Paper

Title

Page

Orbit Correction in the CERN PS Booster

449

M. McAteer, E. Benedetto, C. Carli, G.P. Di Giovanni, B. Mikulec, R. Tomás
CERN, Geneva, Switzerland

Funding: This project has received funding from the European Union’s Seventh Framework Programme for research, technological development and demonstration under grant agreement no (PITN-GA-2011-289485-OPAC).
Prior to the Long Shutdown of 2013-2014 (LS1), control of the closed orbit in the four rings of the CERN PS Booster (PSB) was achieved by adjusting the alignment of several focusing quadrupoles. After a set of orbit corrector dipoles was installed, a major realignment campaign was undertaken to remove these intentional quadrupole offsets and any other magnet misalignments. This paper summarizes the effects of the magnet realignment on the closed orbit in the PSB and the results of closed orbit correction with corrector dipoles.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-MOPJE063

Export •

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

THPF083

Painting Schemes for CERN PS Booster H⁻ Injection

3879

J.L. Abelleira, W. Bartmann, E. Benedetto, C. Bracco, G.P. Di Giovanni, V. Forte, M. Kowalska, M. Meddahi, B. Mikulec, G. Rumolo
CERN, Geneva, Switzerland
V. Forte
Université Blaise Pascal, Clermont-Ferrand, France
M. Kowalska
EPFL, Lausanne, Switzerland

The present 50-MeV proton injection into the PS Booster will be replaced by a H⁻ charge exchange injection at 160 MeV to be provided by Linac 4. The higher energy will allow producing beams at higher brightness. A set of kicker magnets (KSW) will move the beam across the stripping foil to perform phase space painting in the horizontal plane to reduce space charge effects. The PSB must satisfy the different users with very different beams in terms of emittance and intensity. Therefore, the KSW waveforms must be adapted for each case to meet the beam characteristics while minimizing beam losses. Here we present the results of the simulations performed to optimise the injection system. A detailed analysis of the different painting schemes is discussed, including the effect of the working point on the painted beam, and variations in the offset of the injected beam.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-THPF083

Export •

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

THPF087

New Shaving Scheme for Low-Intensity Beams in the CERN PS Booster and Feasibility at 160 MeV

3893

M. Kowalska, E. Benedetto, V. Forte, B. Mikulec, G. Rumolo
CERN, Geneva, Switzerland
V. Forte
Université Blaise Pascal, Clermont-Ferrand, France
M. Kowalska
EPFL, Lausanne, Switzerland

The PS Booster is the first synchrotron in the CERN proton accelerator chain, serving all downstream machines. As part of the LHC Injector Upgrade Project, the PSB injection energy will increase from 50 MeV to 160 MeV and a new H⁻ charge-exchange injection scheme will be implemented. Beam losses are a concern due to the increased injection energy, and mitigation scenarios are under investigation. On the other hand it is desirable for low-intensity beams to have the possibility to precisely tailor sub-micron beam emittances through controlled scraping (transverse shaving process) towards a suitable aperture restriction. Challenges are the higher activation potential of the beam and the smaller transverse beam sizes around 160 MeV as compared to 63 MeV, at which the shaving is presently done. This paper describes the proposal of a new shaving scheme, more robust with respect to the steering errors and the choice of the working point, which localizes the scraping losses on the main PS Booster aperture restriction. The robustness of the new method, together with the results of simulations and measurements are discussed for the current (50 MeV) and future (160 MeV) situation.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-THPF087

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THPF088

CERN PS Booster Upgrade and LHC Beams Emittance

3897

E. Benedetto, J.L. Abelleira, C. Bracco, V. Forte, B. Mikulec, G. Rumolo
CERN, Geneva, Switzerland
V. Forte
Université Blaise Pascal, Clermont-Ferrand, France

By increasing the CERN PS Booster injection energy from 50 MeV to 160 MeV, the LHC Injector Upgrade Project aims at producing twice as brighter beams for the LHC. Previous measurements showed a linear dependence of the transverse emittance with the beam intensity and space-charge simulations confirmed the linear scaling. This paper is discussing in detail the dependence on the longitudinal emittance and on the choice of the working point, with a special attention to the H⁻ injection process and to the beam dynamics in the first 5 ms, during the fall of the injection chicane bump.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-THPF088

Export •

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

THPF090

Status and Plans for the Upgrade of the CERN PS Booster

3905

K. Hanke, D. Aguglia, M.E. Angoletta, W. Bartmann, C. Bedel, E. Benedetto, S. Bertolasi, C. Bertone, J. Betz, T.W. Birtwistle, A. Blas, J. Borburgh, C. Bracco, A.C. Butterworth, E. Carlier, S. Chemli, P. Dahlen, A. Dallocchio, G.P. Di Giovanni, T. Dobers, A. Findlay, R. Froeschl, A. Funken, S. Gabourin, J.L. Grenard, D. Grenier, J. Hansen, D. Hay, J.-M. Lacroix, P. Le Roux, L.A. Lopez Hernandez, C. Martin, A. Masi, B. Mikulec, Y. Muttoni, A. Newborough, D. Nisbet, M.R. Obrecht, M.M. Paoluzzi, S. Pittet, B. Puccio, J. Tan, J. Vollaire, W.J.M. Weterings
CERN, Geneva, Switzerland

CERN’s Proton Synchrotron Booster (PSB) is undergoing a major upgrade program in the frame of the LHC Injectors Upgrade (LIU) project. During the first long LHC shutdown (LS1) some parts of the upgrade have already been implemented, and the machine has been successfully re-commissioned. More work is planned for the upcoming end-of-year technical stops, notably in 2016/17, while most of the upgrade is planned to take place during the second long LHC shutdown (LS2). We report on the upgrade items already completed and commissioned, the first Run 2 beam performance and give a status of the ongoing design and integration work.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-THPF090

Export •

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

THPF093

Status of the LHC Injectors Upgrade (LIU) Project at CERN

3915

M. Meddahi, J. Coupard, H. Damerau, A. Funken, S.S. Gilardoni, B. Goddard, K. Hanke, L. Kobzeva, A.M. Lombardi, D. Manglunki, S. Mataguez, B. Mikulec, G. Rumolo, E.N. Shaposhnikova, M. Vretenar
CERN, Geneva, Switzerland

CERN is currently carrying out an ambitious improvement programme of the full LHC Injectors chain in order to enable the delivery of beams with the challenging HL-LHC parameters. The LHC Injectors Upgrade project coordinates this massive upgrade program, and covers a new linac (Linac4 project) as well as upgrades to the Proton Synchrotron Booster, the Proton Synchrotron and Super Proton Synchrotron. The heavy ion injector chain is also included, adding the Linac3 and Low Energy Ion Ring to the list of accelerators concerned. The performance objectives and roadmap of the main upgrades will be presented, including the work status and outlook. The machine studies and milestones during LHC Run 2 will be discussed and a preliminary Long Shutdown 2 installation planning given. Finally, for the LHC Run 3, the beam performance across the full injector chain after all the upgrades will be estimated and the required commissioning stages outlined.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-THPF093

Export •

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