HB2016 - List of Authors (Shaposhnikova, E.N.)

Paper

Title

Page

CERN PS Booster Longitudinal Dynamics Simulations for the Post-LS2 Scenario

140

D. Quartullo, S.C.P. Albright, E.N. Shaposhnikova, H. Timko
CERN, Geneva, Switzerland

The CERN PS Booster is the first synchrotron in the LHC proton injection chain, it currently accelerates particles from 50 MeV to 1.4 GeV kinetic energy. Several upgrades foreseen by the LHC Injectors Upgrade Program will allow the beam to be accelerated from 160 MeV to 2 GeV after Long Shutdown 2 in 2021. The present RF systems will be replaced by a new one, based on Finemet technology. These and other improvements will help to increase the LHC luminosity by a factor of ten. In order to study beam stability in the longitudinal plane simulations have been performed with the CERN BLonD code, using an accurate longitudinal impedance model and a reliable estimation of the longitudinal space charge. Particular attention has been dedicated to the three main features that currently let the beam go stably through the ramp: Double RF operation in bunch-lengthening mode to reduce the transverse space charge tune spread, exploitation of feedback loops to damp dipole oscillations, and controlled longitudinal emittance blow-up. RF phase noise injection has been considered to study if it could complement or substitute the currently used method based on sinusoidal phase modulation.

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TUAM3X01

Identification and Reduction of the CERN SPS Impedance

260

E.N. Shaposhnikova, T. Argyropoulos, T. Bohl, A. Lasheen, J. Repond, H. Timko
CERN, Geneva, Switzerland

The first SPS impedance reduction programme has been completed in 2001, preparing the ring for its role as an injector of the LHC. This action has eliminated microwave instability on the SPS flat bottom and later nominal beam could be delivered to the LHC. The High Luminosity (HL-) LHC project is based on beam with twice higher intensity than the nominal one. One of the important SPS intensity limitations are longitudinal instabilities with minimum threshold reached on the 450 GeV flat top. In this paper the work which was carried on to identify the impedance sources driving these instabilities is described together with the next campaign of the SPS impedance reduction planned by the LHC Injector Upgrade (LIU) project. The present knowledge of the SPS transverse impedance is also presented.

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TUPM4X01

LHC Injectors Upgrade for the HL-LHC

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

The goal of the HL-LHC is to increase the LHC peak nominal Luminosity by a factor of seven in order to provide more accurate measurements of new particles and enable observation of rare processes that occur below the current sensitivity level. Achieving this target requires to double the beam intensity and reduce the emittance by 40%. All the LHC injectors, from the LINAC to the Super Proton Synchrotron (SPS) including the heavy ion chain, have to be improved to reliably supply such high brightness beams to the HL-LHC. The upgrade campaign will be completed during the Second Long Shutdown (LS2) in 2019-2020. The performance objectives and the status of this challenging program is presented.

Slides TUPM4X01 [10.021 MB]

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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]

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Paper	Title	Page
MOPR028	CERN PS Booster Longitudinal Dynamics Simulations for the Post-LS2 Scenario	140
	D. Quartullo, S.C.P. Albright, E.N. Shaposhnikova, H. Timko CERN, Geneva, Switzerland
	The CERN PS Booster is the first synchrotron in the LHC proton injection chain, it currently accelerates particles from 50 MeV to 1.4 GeV kinetic energy. Several upgrades foreseen by the LHC Injectors Upgrade Program will allow the beam to be accelerated from 160 MeV to 2 GeV after Long Shutdown 2 in 2021. The present RF systems will be replaced by a new one, based on Finemet technology. These and other improvements will help to increase the LHC luminosity by a factor of ten. In order to study beam stability in the longitudinal plane simulations have been performed with the CERN BLonD code, using an accurate longitudinal impedance model and a reliable estimation of the longitudinal space charge. Particular attention has been dedicated to the three main features that currently let the beam go stably through the ramp: Double RF operation in bunch-lengthening mode to reduce the transverse space charge tune spread, exploitation of feedback loops to damp dipole oscillations, and controlled longitudinal emittance blow-up. RF phase noise injection has been considered to study if it could complement or substitute the currently used method based on sinusoidal phase modulation.
Export •	reference for this paper to ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUAM3X01	Identification and Reduction of the CERN SPS Impedance	260
	E.N. Shaposhnikova, T. Argyropoulos, T. Bohl, A. Lasheen, J. Repond, H. Timko CERN, Geneva, Switzerland
	The first SPS impedance reduction programme has been completed in 2001, preparing the ring for its role as an injector of the LHC. This action has eliminated microwave instability on the SPS flat bottom and later nominal beam could be delivered to the LHC. The High Luminosity (HL-) LHC project is based on beam with twice higher intensity than the nominal one. One of the important SPS intensity limitations are longitudinal instabilities with minimum threshold reached on the 450 GeV flat top. In this paper the work which was carried on to identify the impedance sources driving these instabilities is described together with the next campaign of the SPS impedance reduction planned by the LHC Injector Upgrade (LIU) project. The present knowledge of the SPS transverse impedance is also presented.
	Slides TUAM3X01 [6.457 MB]
Export •	reference for this paper to ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPM4X01	LHC Injectors Upgrade for the HL-LHC
	C. Bracco, J. Coupard, H. Damerau, A. Funken, B. Goddard, K. Hanke, A.M. Lombardi, D. Manglunki, S. Mataguez, M. Meddahi, B. Mikulec, G. Rumolo, R. Scrivens, E.N. Shaposhnikova, M. Vretenar CERN, Geneva, Switzerland
	The goal of the HL-LHC is to increase the LHC peak nominal Luminosity by a factor of seven in order to provide more accurate measurements of new particles and enable observation of rare processes that occur below the current sensitivity level. Achieving this target requires to double the beam intensity and reduce the emittance by 40%. All the LHC injectors, from the LINAC to the Super Proton Synchrotron (SPS) including the heavy ion chain, have to be improved to reliably supply such high brightness beams to the HL-LHC. The upgrade campaign will be completed during the Second Long Shutdown (LS2) in 2019-2020. The performance objectives and the status of this challenging program is presented.
	Slides TUPM4X01 [10.021 MB]
Export •	reference for this paper to ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

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]
Export •	reference for this paper to ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)