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Accelerator Physics

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2025-01-23
17:04
108/36 degree optics for LEP: a first look / Beloshitsky, P
CERN-SL-Note-96-77-AP.- Geneva : CERN, 1996 Note

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2025-01-21
06:24
Studies of single and multi-bunch instabilities in linacs using RF-Track / Latina, Andrea (CERN)
In high-intensity linacs, bunch-to-bunch effects due to the excitation of short and long-range wakefields can lead to beam instabilities and beam breakup. Wakefields can be due to resistive or geometric effects excited in the RF structures or in the beam pipe. [...]
2024 - 4 p. - Published in : JACoW LINAC 2024 (2024) MOPB039 Fulltext: PDF;
In : 32nd Linear Accelerator Conference (LINAC 2024), Chicago, Illinois, United States, 25 - 30 Aug 2024, pp.MOPB039

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2025-01-14
16:31
Design and Optimization of the ASACUSA1 Beam Transport Line / Bojtar, Lajos (CERN) ; Dutheil, Yann (CERN)
The document presents an analysis of beam transport optimization in the ASACUSA1 line at CERN. [...]
CERN-ACC-NOTE-2025-0001. - 2025

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2025-01-14
11:18
Long-range beam-beam mitigation for round optics / Fartoukh, Stephane (CERN) ; Kostoglou, Sofia (CERN)
When colliding high intensity bunch trains at low beta*, a sufficiently large crossing angle needs to be imposed at the interaction point (IP) in order to separate the two beams before and after the collision, and mitigate the so-called long-range beam-beam (BBLR) effect, which otherwise can be very detrimental to the beam lifetime. [...]
CERN-ACC-2023-0005. - 2023 - 22.

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2024-12-20
12:11
Long-range beam-beam mitigation for round optics / Fartoukh, Stephane (CERN) ; Kostoglou, Sofia (CERN)
When colliding high intensity bunch trains at low beta*, a sufficiently large crossing angle needs to be imposed at the interaction point (IP) in order to separate the two beams before and after the collision, and mitigate the so-called long-range beam-beam (BBLR) effect, which otherwise can be very detrimental to the beam lifetime. [...]
CERN-ACC-NOTE-2023-0029. - 2023

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2024-12-19
05:10
Development of self-modulation as a function of plasma length / Clairembaud, Arthur (Munich, Max Planck Inst. ; Munich, Tech. U.) ; Turner, Marlene (CERN) ; Muggli, Patric (Munich, Max Planck Inst.)
We use numerical simulations to determine whether the saturation length of the self-modulation (SM) instability of a long proton bunch in plasma could be determined by measuring the radius of the bunch halo SM produces. [...]
arXiv:2412.12922. - 13.
Fulltext

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2024-12-11
06:11
A Novel Method for Transverse Beam-Coupling Impedance Measurements in Particle Accelerator Devices Using the Bead-Pull Method / Antuono, Chiara (U. Rome La Sapienza (main) ; CERN) ; Sito, Leonardo (CERN ; Naples U.) ; Calzone, Eleonora (U. Rome La Sapienza (main) ; CERN) ; el Dali, D (CERN) ; Migliorati, Mauro (CERN ; U. Rome La Sapienza (main)) ; Mostacci, Andrea (CERN ; U. Rome La Sapienza (main)) ; Fienga, Francesco (CERN ; Naples U.) ; Marrazzo, Vincenzo Romano (CERN ; Naples U.) ; Breglio, Giovanni (CERN ; Naples U.) ; Rumolo, G (CERN) et al.
In high-energy particle accelerators, circulating particle beams with high intensity interact electromagnetically with their surroundings (i.e., metallic vacuum chambers of various geometries). These electromagnetic interactions, which are typically described through the concept of beam-coupling impedance, can represent a serious issue in terms of stability of the particle beam and heating on the accelerator structures. [...]
2024 - 9 p. - Published in : IEEE Trans. Instrum. Meas. 73 (2024) 8005209 Fulltext: PDF;

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2024-12-10
05:13
Development and commissioning of ion-optical elements for ion and antiproton beams with energies up to 5 keV / Klink, Clara (Darmstadt, Tech. U. ; CERN) ; Schlaich, Moritz (Darmstadt, Tech. U.) ; Fischer, Jonas (Darmstadt, Tech. U.) ; Obertelli, Alexandre (Darmstadt, Tech. U.) ; Schmidt, Alexander (Darmstadt, Tech. U.) ; Wienholtz, Frank (Darmstadt, Tech. U.)
In nuclear and atomic physics experiments, charged ion beams often need to be guided from the ion production to the experimental site. In the PUMA experiment, an ion source beamline was developed, which can be operated with up to \SI5{\kilo\electronvolt} beam energy at a base pressure of $10^{-9}$ mbar or better. [...]
arXiv:2410.18724.- 2024-11-15 - 22 p. - Published in : JINST 19 (2024) T11009 Fulltext: 2410.18724 - PDF; Publication - PDF;

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2024-12-02
12:20
Optics Measurements with the Transverse Damper in the Large Hadron Collider / Nissinen, Tuuli
Effective control of beam optics is critical for achieving the luminosity targets in particle colliders such as the Large Hadron Collider (LHC) [...]
CERN-THESIS-2024-245 - 2024 - 67.


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2024-11-30
06:10
Precision luminosity measurement at hadron colliders / Wanczyk, Joanna Malgorzata
This thesis links two realms of particle accelerator dynamics and precision particle physics [...]
2024 - 171.


10.5075/epfl-thesis-10500

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