CERN Accelerating science

Accelerator Physics

Ultimi arrivi:
ATF2 Ultra-low βy∗ study report for March 2019 run / Cilento, Vera (Université Paris-Saclay (FR)) ; Pastushenko, Andrii (Université Paris-Saclay (FR)) ; Yang, Renjun (CERN) ; Tomas Garcia, Rogelio (CERN) ; Faus-Golfe, Angeles (Centre National de la Recherche Scientifique (FR)) ; Terunuma, Nobuhiro ; Okugi, Toshiyuki (KEK) ; Kubo, Kiyoshi
One of the main requests for future linear colliders is to achieve a nanometer vertical beam size at the Interaction Point (IP). [...]
- 2020. - 15 p.
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Effect of Head-Tail Mode Diffusion due to Synchrotron Radiation on Transverse Coupled-Bunch Instabilities with Harmonic-Cavity-Lengthened Bunches / Cullinan, F J (Lund U., MAX-lab ; ; Tavares, P F (Lund U., MAX-lab) ; Nagaoka, R (SOLEIL, Saint-Aubin) ; Skripka, G (CERN)
Many present and future storage-ring-based light sources make use of cavities at a harmonic of the main RF to lengthen the electron bunches. [...]
WSP, 2019. - 8 p.

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Challenges for the Electric Field Devices for a CERN Proton EDM Storage Ring / Borburgh, J (CERN) ; Atanasov, M (CERN) ; Goddard, B (CERN) ; Jorat, L (CERN) ; Sgobba, S (CERN)
In the framework of the Physics Beyond Colliders (PBC) study at CERN, the Electric Dipole Moment (EDM) working group is investigating the feasibility of building an approximately 500 m circumference storage ring to precisely measure the permanent electric dipole moment of the proton. Protons are stored in an EDM ring at the so-called `magic' energy of 233 MeV using only electric field elements in order to ensure that spin and momentum vectors precess horizontally at the same rate. [...]
Sept - 4 p. - Published in : 10.1109/DEIV.2018.8537088
In : 28th International Symposium on Discharges and Electrical Insulation in Vacuum, Greifswald, Germany, 23 - 28 Sep 2018, pp.765-768

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Automatic detection of transverse beam instabilities in the Large Hadron Collider / Levens, T E (CERN ; Glasgow U.) ; Łasocha, K (CERN ; Jagiellonian U.) ; Lefevre, T (CERN) ; Gąsior, M (CERN) ; Jones, R (CERN) ; Włostowski, T (CERN) ; Ellis, J P (CERN ; Melbourne U.) ; Steinhagen, R J (CERN ; Darmstadt, GSI)
Transverse beam instabilities are a major cause of emittance dilution and beam losses in high intensity hadron accelerators. This paper presents an overview of the system that has been developed for automatic detection of transverse beam instabilities in the Large Hadron Collider at CERN. [...]
2019 - 12 p. - Published in : Phys. Rev. Accel. Beams 22 (2019) 112803 Fulltext: PDF;

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Optimization of the Beam Screen for the FCC Injection Kicker Magnets / Chmielinska, Agnieszka
The Future Circular Collider for hadrons (FCC-hh) is a proposed high-energy frontier particle accelerator, which would be built in a new ∼100 km circumference tunnel and would enable proton-proton collisions at a centre-of-mass energy of 100 TeV [...]
CERN-THESIS-2019-245 8079. - 200 p.

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LHC MD4243: Q22 optics in TI2 / Velotti, Francesco Maria (CERN) ; Bartmann, Wolfgang (CERN) ; Bracco, Chiara (CERN) ; Goddard, Brennan (CERN) ; Hessler, Christoph ; Kain, Verena (CERN) ; Chapochnikova, Elena (CERN) ; Timko, Helga (CERN)
This MD shows the feasibility of operating TI2 with an optics matched to the SPS Q22 optics.Optics studies in the transfer line (TL) were performed together with an injection voltage scan toassess, also, the longitudinal quality of the injected single bunch..
- 2019. - 5 p.
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Performance and Operational Aspects of High-Luminosity LHC Operational Scenarios / Medina Medrano, Luis Eduardo
The High-Luminosity LHC (HL-LHC) is the upgrade of the Large Hadron Collider (LHC) at the European Organization for Nuclear Research (CERN) aiming at the full exploitation of the collider, with operations scheduled to start after 2025 [...]
CERN-THESIS-2019-219 - 223 p.

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A new proposal for damping the resonances in CERN accelerators, using HOM couplers / Gilardi, Antonio
Parasitic resonances are a fundamental problem in the world of accelerators (there are also resonating cavities, but in this case the resonance is designed and is used to accelerate the beam) [...]
CERN-THESIS-2017-480 - volume = "146", pages = "938 - 947" : Measurement, 2019-11-01. - 136 p.

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LHeC optics with β∗ = 10 cm and L∗ = 15 m / Cruz Alaniz, Emilia (University of Liverpool (GB)) ; Martin, Roman ; Tomas Garcia, Rogelio (CERN)
New proton optics have been designed for LHeC taking into account new final focus magnet designs and ensuring a full compatibility with HL-LHC version 1.3. [...]
- 2019. - 17 p.
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Optics-measurement-based Beam Position Monitor Calibration. / Garcia-Tabares Valdivieso, Ana
Accurate measurements of the focusing properties of an accelerator are essential for proper operation of a synchrotron, both for the machine protection and for the performance of the experiment [...]
CERN-THESIS-2019-211 - 153 p.

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