1.
|
Landau Damping Studies for the FCC: Octupole Magnets, Electron Lens and Beam-Beam Effects
/ Tambasco, Claudia (Ecole Polytechnique, Lausanne) ; Arsenyev, Sergey (CERN) ; Barranco García, Javier (Ecole Polytechnique, Lausanne) ; Buffat, Xavier (CERN) ; Pieloni, Tatiana (Ecole Polytechnique, Lausanne) ; Rivkin, Leonid (Ecole Polytechnique, Lausanne) ; Schulte, Daniel (CERN)
Stability studies for the FCC-hh operational cycle are explored using Landau octupoles and electron lenses alone and in the presence of long-range as well as head-on beam-beam effects. Pros and cons of the various methods are compared and an optimum operational scenario to guarantee the maximum stability is proposed..
CERN-ACC-2018-153.-
2018 - 4 p.
- Published in : 10.18429/JACoW-IPAC2018-THPAF074
Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.THPAF074
|
|
2.
|
The High Energy LHC Beam-Beam Effects studies
/ Pieloni, Tatiana (Ecole Polytechnique, Lausanne) ; Amorim, David (CERN) ; Antipov, Sergey (CERN) ; Barranco García, Javier (Ecole Polytechnique, Lausanne) ; Buffat, Xavier (CERN) ; Rivkin, Leonid (Ecole Polytechnique, Lausanne) ; Salvant, Benoit (CERN) ; Tambasco, Claudia (Ecole Polytechnique, Lausanne) ; Zimmermann, Frank (CERN)
We present in this paper the studies of beam-beam effects for the High Energy Large Hadron Collider. We will describe and review the different aspects of beam-beam interactions (i.e. [...]
CERN-ACC-2018-074.-
2018 - 4 p.
- Published in : 10.18429/JACoW-IPAC2018-MOPMF069
Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.MOPMF069
|
|
3.
|
High-Energy LHC Design
/ Zimmermann, Frank (CERN) ; Abelleira, Jose Luis (JAI, UK) ; Amorim, David (CERN) ; Antipov, Sergey (CERN) ; Apyan, Armen (Yerevan Phys. Inst.) ; Arsenyev, Sergey (CERN) ; Barranco García, Javier (Ecole Polytechnique, Lausanne) ; Benedikt, Michael (CERN) ; Bruce, Roderik (CERN) ; Burkart, Florian (DESY) et al.
In the frame of the FCC study we are designing a 27 TeV hadron collider in the LHC tunnel, called the High Energy LHC (HE-LHC)..
CERN-ACC-2018-150.-
2018 - 8 p.
- Published in : (2018) , pp. MOPMF064
- Published in : J. Phys.: Conf. Ser. 1067 (2018) 022009
Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.MOPMF064
|
|
4.
|
Updated High-Energy LHC design
/ Zimmermann, Frank (CERN) ; Abelleira, Jose Luis (JAI, UK) ; Abramov, Andrey (JAI, UK ; Royal Holloway, U. of London) ; Amorim, David (CERN) ; Antipov, Sergey (CERN) ; Apyan, Armen (Yerevan Phys. Inst.) ; Arsenyev, Sergey (CERN) ; Barranco, Javier (Ecole Polytechnique, Lausanne) ; Benedikt, Michael (CERN) ; Bruce, Roderik (CERN) et al.
We present updated design parameters for a future High-Energy LHC. A more realistic turnaround time has led to a revision of the target peak luminosity, as well as a choice of a larger IP beta function, and longer physics fills. [...]
CERN-ACC-2019-089.-
2019 - 4 p.
- Published in : 10.18429/JACoW-IPAC2019-MOPMP037
Fulltext from publisher: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.MOPMP037
|
|
5.
|
Assessment of Linear and Non-Linear Optics Errors due to Beam-Beam with Multipoles for the High Luminosity LHC
/ Medina Medrano, Luis (Guanajuato U. ; CERN) ; Barranco García, Javier (Ecole Polytechnique, Lausanne) ; Buffat, Xavier (CERN) ; Pieloni, Tatiana (Ecole Polytechnique, Lausanne) ; Tomás, Rogelio (CERN)
Study of the head-on and long-range beam-beam effects in the High Luminosity LHC (HL-LHC) is of interest to evaluate their potential impact on performance (in the form of luminosity imbalance) and machine operation (collimator system), and, depending on their magnitude, correction schemes might be necessary to minimize them. In this work, both the β-beating at zero amplitude and its amplitude-dependence are computed for the current HL-LHC baseline optics and parameters, as well as the amplitude detuning, at the main interaction points and collimators. [...]
2018 - 4 p.
- Published in : 10.18429/JACoW-IPAC2018-THPAK135
Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.THPAK135
|
|
6.
|
Impact of Incoherent Effects on the Landau Stability Diagram at the LHC
/ Tambasco, Claudia (CERN) ; Barranco García, Javier (Ecole Polytechnique, Lausanne ; CERN) ; Buffat, Xavier (CERN ; Ecole Polytechnique, Lausanne) ; Pieloni, Tatiana (CERN ; Ecole Polytechnique, Lausanne)
Instability thresholds are explored at the Large Hadron Collider (LHC) by means of the computation of the Landau Stability Diagrams (SD). In the presence of diffusive mechanisms, caused by resonance excitations or noise, the SD can be reduced due to the modification of the particle distribution inside the beam. [...]
CERN-ACC-2017-150.-
2017 - 4 p.
- Published in : 10.18429/JACoW-IPAC2017-TUPVA031
Fulltext: PDF;
In : 8th International Particle Accelerator Conference, Copenhagen, Denmark, 14 - 19 May 2017, pp.TUPVA031
|
|
7.
|
Dynamic Aperture Studies of the Long-Range Beam-Beam Interaction at the LHC
/ Crouch, Matthew (U. Manchester (main)) ; Appleby, Robert (U. Manchester (main)) ; Barranco García, Javier (Ecole Polytechnique, Lausanne) ; Buffat, Xavier (CERN) ; Giovannozzi, Massimo (CERN) ; Maclean, Ewen (CERN) ; Muratori, Bruno (Daresbury) ; Pieloni, Tatiana (Ecole Polytechnique, Lausanne) ; Tambasco, Claudia (Ecole Polytechnique, Lausanne)
Long-range beam-beam interactions dictate the choice of operational parameters for the LHC, such as the crossing angle and β^{*} and therefore the luminosity reach for the collider. These effects can lead to particle losses, closed orbit effects and emittance growth. [...]
CERN-ACC-2017-182.-
2017 - 4 p.
- Published in : 10.18429/JACoW-IPAC2017-THPAB056
Fulltext: PDF;
In : 8th International Particle Accelerator Conference, Copenhagen, Denmark, 14 - 19 May 2017, pp.THPAB056
|
|
8.
|
Single-beam transverse collective effects for HE-LHC
/ Amorim, David (CERN) ; Antipov, Sergey (CERN) ; Arsenyev, Sergey (CERN) ; Biancacci, Nicolo (CERN) ; Buffat, Xavier (CERN) ; Oeftiger, Adrian (CERN) ; Mether, Lotta (Ecole Polytechnique, Lausanne, LPAP) ; Métral, Elias (CERN) ; Pieloni, Tatiana (Ecole Polytechnique, Lausanne, LPAP) ; Salvant, Benoit (CERN) et al.
2017 - 24 p.
- Published in : ICFA Beam Dyn. Newsl.: 72 (2017) , pp. 151-174
Fulltext: PDF;
|
|
9.
|
Dynamic beta and beta-beating effects in the presence of the beam-beam interactions
/ Pieloni, Tatiana (CERN) ; Barranco, Javier (Ecole Polytechnique, Lausanne) ; Buffat, Xavier (CERN) ; Concalves Jorge, Patrik (Ecole Polytechnique, Lausanne) ; Medina Medrano, Luis (CERN) ; Tambasco, Claudia (CERN) ; Tomás, Rogelio (CERN)
The Large Hadron Collider (LHC) has achieved correction of beta beat down to better than 5%. The beam-beam interactions at the four experiments result as extra quadrupole error in the lattice. [...]
2016 - 4 p.
- Published in : 10.18429/JACoW-HB2016-MOPR027
Fulltext: PDF;
In : 57th ICFA Advanced Beam Dynamics Workshop on High-Intensity and High-Brightness Hadron Beams, Malmö, Sweden, 3 - 8 Jul 2016, pp.MOPR027
|
|
10.
|
First BTF Measurements at the Large Hadron Collider
/ Tambasco, Claudia (CERN ; Ecole Polytechnique, Lausanne) ; Barranco, Javier (Ecole Polytechnique, Lausanne) ; Boccardi, Andrea (CERN) ; Buffat, Xavier (CERN) ; Fuchsberger, Kajetan (CERN) ; Gąsior, Marek (CERN) ; Giachino, Rossano (CERN) ; Lefèvre, Thibaut (CERN) ; Levens, Thomas (CERN) ; Pieloni, Tatiana (CERN) et al.
During the Run I in 2012, several instabilities have been observed at the Large Hadron Collider (LHC) during the Betatron squeeze. The predictions of instability thresholds are based on the computation of the beam Landau damping by calculating the Stability Diagrams (SD). [...]
CERN-ACC-2016-194.-
2016 - 4 p.
- Published in : 10.18429/JACoW-IPAC2016-WEPOY030
Published version from JACoW: PDF;
In : 7th International Particle Accelerator Conference, Busan, Korea, 8 - 13 May 2016, pp.WEPOY030
|
|