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Experimental Investigation of Vacuum Breakdown Triggering Mechanisms in a DC Electrode System / Peacock, Ruth
This thesis describes the testing and results of the two pulsed DC large electrode systems at CERN, as part of a collaborations with the Compact Linear Collider (CLIC) and Linear Accelerator 4 (Linac 4) projects [...]
CERN-THESIS-2023-160 - Lancaster : Lancaster University, 2023-09-20. - 324 p.

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Pulsed DC High Field Measurements of Irradiated and Non-Irradiated Electrodes of Different Materials / Peacock, Ruth (Lancaster U. (main) ; CERN) ; Bellodi, Giulia (CERN) ; Burt, Graeme (Lancaster U. (main)) ; Calatroni, Sergio (CERN) ; Da Palma Serafim, Catarina (CERN) ; Grudiev, Alexej (CERN) ; Lombardi, Alessandra (CERN) ; Perez Fontenla, Ana Teresa (CERN) ; Ramberger, Suitbert (CERN) ; Sargsyan, Edgar (CERN) et al.
Beam loss occurs in Radio Frequency Quadrupoles (RFQ), and has been observed in the H⁻ linear accelerator Linac4 (L4) at CERN. To determine if beam loss can induce breakdowns, and to compare the robustness of different materials, tests have been done using pulsed high-voltage DC systems. [...]
2022 - 4 p. - Published in : JACoW LINAC 2022 (2022) 441-444 Fulltext: PDF;
In : 31st Linear Accelerator Conference (LINAC22), Liverpool, UK, 28 Aug - 2 Sep 2022, pp.441-444

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Microscopy Investigation on Different Materials After Pulsed High Field Conditioning and Low Energy H$^{-}$ Irradiation / Da Palma Serafim, Catarina (CERN ; U. Helsinki (main)) ; Bellodi, Giulia (CERN) ; Calatroni, Sergio (CERN) ; Djurabekova, Flyura (U. Helsinki (main)) ; Grudiev, Alexej (CERN) ; Lombardi, Alessandra (CERN) ; Peacock, Ruth (CERN) ; Perez Fontenla, Ana Teresa (CERN) ; Ramberger, Suitbert (CERN) ; Sargsyan, Edgar (CERN) et al.
During operation the RFQ (Radio-Frequency-Quadrupole) of the LINAC4 at CERN is exposed to high electric fields which can lead to vacuum breakdown. It is also subject to beam loss that can cause surface modification, including blistering, which can result in reduced electric field handling and an increased breakdown rate. [...]
2022 - 4 p. - Published in : JACoW LINAC 2022 (2022) 422-425 Fulltext: PDF;
In : 31st Linear Accelerator Conference (LINAC22), Liverpool, UK, 28 Aug - 2 Sep 2022, pp.422-425

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Measurements of Field Emission Induced Optical Spectra / Peacock, Ruth C (CERN ; Lancaster U.) ; Burt, Graeme (Lancaster U.) ; Calatroni, Sergio (CERN) ; Wuensch, Walter (CERN)
Field emission induced optical spectra in a dc electrode system have been measured using a spectrometer and CCD camera system in order to gain insight into the nature of field emissions sites. Spectra were measured from between 2 ridged parallel copper electrodes with a gap ranging from 60µm to 100µm and a bias voltage of up to 8000V under high vacuum conditions. [...]
Geneva : JACoW, 2021 - 4 p. - Published in : JACoW IPAC '21 (2021) 3602-3605 Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.3602-3605

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Identifying critical plastic activity in electrodes under intense electric fields and the link to breakdown nucleation / Ashkenazy, Yinon (Hebrew U.) ; Popov, Inna (Hebrew U.) ; Yashar, Ayelet (Hebrew U.) ; Gad, Raanan (Hebrew U.) ; Profatilova, Iaroslava (CERN) ; Paszkiewicz, Jan (CERN) ; Peacock, Ruth (CERN) ; Wuensch, Walter (CERN)
The hypothesis that arc nucleation is related to plastic activity due to collective motion of dislocation in the cathode is examined via experiments and theoretical efforts over the last few years. Current theoretical and experimental observations indicating specific dislocation activity related to the applied high field are reviewed. [...]
2021 - 2 p. - Published in : 10.1109/ISDEIV46977.2021.9586897
In : 29th International Symposium on Discharges and Electrical Insulation in Vacuum, Online, 26 - 30 Sep 2021, pp.1-2

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Dark current spikes as an indicator of mobile dislocation dynamics under intense dc electric fields / Engelberg, Eliyahu Zvi (Hebrew U.) ; Paszkiewicz, Jan (CERN) ; Peacock, Ruth (CERN) ; Lachmann, Sagy (Hebrew U.) ; Ashkenazy, Yinon (Hebrew U.) ; Wuensch, Walter (CERN)
Breakdown of metals subject to intense electric fields is a long-standing limiting factor in high-voltage applications. The mechanism leading to breakdown nucleation is not completely understood. [...]
2020 - 9 p. - Published in : Phys. Rev. Accel. Beams 23 (2020) 123501 Fulltext: PDF;

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Voir aussi: noms d'auteurs similaires
1	Peacock, R
2	Peacock, R N
1	Peacock, R.
1	Peacock, Roy E
1	Peacock, Ruth C

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