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მთავარი > ძიების შედეგები: Spear, B.
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CERN Document Server 9 ჩანაწერია ნაპოვნი  ძიებას დასჭირდა 1.22 წამი. 
1.
Measurement of the emittance of accelerated electron bunches at the AWAKE experiment / AWAKE Collaboration
The vertical plane transverse emittance of accelerated electron bunches at the AWAKE experiment at CERN has been determined, using three different methods of data analysis. [...]
arXiv:2411.08681. - 20.
Fulltext
დეტალური ჩანაწერი - მსგავსი ჩანაწერები
2.
Beam studies using a Cherenkov diffraction based beam position monitor for AWAKE / Spear, Bethany (JAI, UK) ; Pakuza, Collette (CERN) ; Senes, Eugenio (CERN) ; Wendt, Manfred (CERN) ; Burrows, Philip (JAI, UK) ; Mazzoni, Stefano (CERN) ; Lefevre, Thibaut (CERN)
A beam position monitor based on Cherenkov diffraction radiation (ChDR) is being investigated as a way to disentangle the signals generated by the electromagnetic fields of a short-pulse electron bunch from a long proton bunch co-propagating in the AWAKE plasma acceleration experiment at CERN. These ChDR BPMs have undergone renewed testing under a variety of beam conditions with proton and electron bunches in the AWAKE common beamline, at 3 different frequency ranges between 20-110 GHz to quantify the effectiveness of discriminating the electron beam position with and without proton bunches present. [...]
2024 - 4 p. - Published in : JACoW IPAC 2024 (2024) WEPG49 Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.WEPG49
დეტალური ჩანაწერი - მსგავსი ჩანაწერები
3.
Selective electron beam sensing through coherent Cherenkov diffraction radiation / Senes, E (CERN) ; Krupa, M (CERN) ; Mazzoni, S (CERN) ; Lasocha, K (CERN) ; Lefevre, T (CERN) ; Shloegelhofer, A (CERN) ; Wendt, M (CERN) ; Davut, C (Manchester U.) ; Karataev, P (JAI, UK) ; Pakuza, C (JAI, UK) et al.
We exploit the coherent emission of Cherenkov diffraction radiation (ChDR) by a relativistic electron beam to sense its position even in the presence of other particle beams. ChDR is produced in alumina inserts embedded in the vacuum chamber walls and recorded in a narrow band centered at 30 GHz. [...]
2024 - 6 p. - Published in : Phys. Rev. Res. 6 (2024) 023278 Fulltext: PDF;
დეტალური ჩანაწერი - მსგავსი ჩანაწერები
4.
Experimental Observation of Motion of Ions in a Resonantly Driven Plasma Wakefield Accelerator / AWAKE Collaboration
We show experimentally that an effect of motion of ions, observed in a plasma-based accelerator, depends inversely on the plasma ion mass. [...]
arXiv:2406.16361. - 9.
Fulltext
დეტალური ჩანაწერი - მსგავსი ჩანაწერები
5.
Electron beam studies on a beam position monitor based on Cherenkov diffraction radiation / Pakuza, Collette (JAI, UK) ; Malyzhenkov, Alexander (CERN) ; Schloegelhofer, Andreas (CERN) ; Aksoy, Avni (CERN) ; Spear, Bethany (JAI, UK) ; Senes, Eugenio (CERN) ; Lasocha, Kacper (CERN) ; Wendt, Manfred (CERN) ; Krupa, Michal (CERN) ; Chritin, Nicolas (CERN) et al.
A beam position monitor based on Cherenkov diffraction radiation (ChDR BPM) is currently under investigation to disentangle the electromagnetic field of an electron bunch from that of a proton bunch travelling together in time and space in the beam-line of the AWAKE plasma acceleration experiment at CERN. The signals from a horizontal pair of ChDR BPM radiators have been studied under a variety of beam conditions at the CLEAR electron beam test facility. [...]
2023 - 4 p. - Published in : JACoW IPAC 2023 (2023) THPL146 Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.THPL146
დეტალური ჩანაწერი - მსგავსი ჩანაწერები
6.
Hosing of a long relativistic particle bunch in plasma / AWAKE Collaboration
Experimental results show that hosing of a long particle bunch in plasma can be induced by wakefields driven by a short, misaligned preceding bunch. Hosing develops in the plane of misalignment, self-modulation in the perpendicular plane, at frequencies close to the plasma electron frequency, and are reproducible. [...]
arXiv:2309.03785.- 2024-02-13 - 7 p. - Published in : Phys. Rev. Lett. 132 (2024) 075001 Fulltext: 2309.03785 - PDF; Publication - PDF;
დეტალური ჩანაწერი - მსგავსი ჩანაწერები
7.
Filamentation of a Relativistic Proton Bunch in Plasma / AWAKE Collaboration
We show in experiments that a long, underdense, relativistic proton bunch propagating in plasma undergoes the oblique instability, that we observe as filamentation. We determine a threshold value for the ratio between the bunch transverse size and plasma skin depth for the instability to occur. [...]
arXiv:2312.13883.- 2024-05-07 - 8 p. - Published in : Phys. Rev. E 109 (2024) 055203 Fulltext: Publication - PDF; 2312.13883 - PDF; External link: Physics Synopsis
დეტალური ჩანაწერი - მსგავსი ჩანაწერები
8.
Development of the Self-Modulation Instability of a Relativistic Proton Bunch in Plasma / AWAKE Collaboration
Self-modulation is a beam-plasma instability that is useful to drive large-amplitude wakefields with bunches much longer than the plasma skin depth. We present experimental results showing that, when increasing the ratio between the initial transverse size of the bunch and the plasma skin depth, the instability occurs later along the bunch, or not at all, over a fixed plasma length, because the amplitude of the initial wakefields decreases. [...]
arXiv:2305.05478.- 2023-08-01 - 10 p. - Published in : Phys. Plasmas 30 (2023) 083104 Fulltext: 2305.05478 - PDF; Publication - PDF;
დეტალური ჩანაწერი - მსგავსი ჩანაწერები
9.
FCC-ee design project report / Spear, Bethany
The Future Circular electron-positron Collider (FCC-ee) has been proposed to reach the higher energies, luminosities, and sensitivities, that are needed to observe signs of novel physical processes [...]
2022. - 59 p. (JAI Graduate Accelerator Physics Programme - student design projects ; 2022)


10.17181/CERN.GSBF.JG2K
დეტალური ჩანაწერი - მსგავსი ჩანაწერები

ასევე იხილეთ: მსგავსი ავტორის სახელები
1 Spear, B
3 Spear, Bethany
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