2020-10-02 06:50 |
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2020-10-02 06:50 |
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2020-10-02 06:50 |
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2020-10-01 06:01 |
Recent secondary electron modeling at Princeton Plasma Physics Laboratory
/ Swanson, C (Unlisted, US, NJ) ; Kaganovich, I D (Princeton U., Plasma Physics Lab.)
Over the past 5 years, researchers at Princeton Plasma Physics Laboratory (PPPL) have been engaged in research to theoretically characterize Secondary Electron Emission (SEE) from complex surfaces. We have used both a Monte Carlo numerical method and an analytic integral model to study the phenomenon. [...]
2020 - 6 p.
Fulltext from publisher: PDF;
In : ECLOUD’18: Proceedings of the Joint INFN-CERN-ARIES Workshop on Electron-Cloud Effects, La Biodola, Isola d'Elba, Italy, 3 - 7 Jun 2018, pp.131-136 (CERN-2020-007)
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2020-10-01 06:01 |
Photo reflectivity and photo electron yield from technical surfaces
/ Liedl, A (Frascati) ; Angelucci, M (Frascati) ; La Francesca, E (Frascati ; Rome U.) ; Schäfers, F (Helmholtz-Zentrum, Berlin) ; Sertsu, M G (Helmholtz-Zentrum, Berlin) ; Siewert, F (Helmholtz-Zentrum, Berlin) ; Sokolov, A (Helmholtz-Zentrum, Berlin) ; Cimino, R (Frascati)
The knowledge of material properties is an essential stepto design particle accelerators and High Energy Colliders.During operation of these machines, the walls of the vac-uum chambers are subjected to bombardment of photonsand electrons. The detrimental interactions may be followedby issues related to vacuum and beam instability. [...]
2020 - 6 p.
Fulltext from publisher: PDF;
In : ECLOUD’18: Proceedings of the Joint INFN-CERN-ARIES Workshop on Electron-Cloud Effects, La Biodola, Isola d'Elba, Italy, 3 - 7 Jun 2018, pp.125-130 (CERN-2020-007)
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2020-10-01 06:01 |
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2020-10-01 06:01 |
Experiments with stable confined electron columns
/ Thoma, K I (Goethe U., Frankfurt (main)) ; Britten, V (Goethe U., Frankfurt (main)) ; Droba, M (Goethe U., Frankfurt (main)) ; Meusel, O (Goethe U., Frankfurt (main)) ; Podlech, H (Goethe U., Frankfurt (main)) ; Scheible, B (Goethe U., Frankfurt (main)) ; Schulte, K (Goethe U., Frankfurt (main))
Gabor Lenses were invented for focusing ion beams by the electric field of a confined electron column. In synchrotrons spontaneously occurring electron clouds have an influence on the beam dynamics. [...]
2020 - 3 p.
Fulltext from publisher: PDF;
In : ECLOUD’18: Proceedings of the Joint INFN-CERN-ARIES Workshop on Electron-Cloud Effects, La Biodola, Isola d'Elba, Italy, 3 - 7 Jun 2018, pp.143-146 (CERN-2020-007)
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2020-10-01 06:01 |
Electron cloud effects in SuperKEKB commissioning
/ Ohmi, K (KEK, Tsukuba ; Sokendai, Tsukuba) ; Flanagan, J (KEK, Tsukuba ; Sokendai, Tsukuba) ; Fukuma, H (KEK, Tsukuba ; Sokendai, Tsukuba) ; Ikeda, H (KEK, Tsukuba ; Sokendai, Tsukuba) ; Mulyani, E (KEK, Tsukuba ; Sokendai, Tsukuba) ; Shibata, K (KEK, Tsukuba ; Sokendai, Tsukuba) ; Suetsugu, Y (KEK, Tsukuba ; Sokendai, Tsukuba) ; Tobiyama, M (KEK, Tsukuba ; Sokendai, Tsukuba)
A vertical emittance growth (beam size blow-up) due to electron cloud has been observed in the positron low energy ring (LER) in Phase-I commissioning (2016) of SuperKEKB. The emittance growth is caused by fast head-tail instability due to wake force induced by electron cloud. [...]
2020 - 4 p.
Fulltext from publisher: PDF;
In : ECLOUD’18: Proceedings of the Joint INFN-CERN-ARIES Workshop on Electron-Cloud Effects, La Biodola, Isola d'Elba, Italy, 3 - 7 Jun 2018, pp.179-182 (CERN-2020-007)
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2020-10-01 06:01 |
Electron cloud effect and its cures in the SuperKEKB positron ring
/ Suetsugu, Y (KEK, Tsukuba) ; Fukuma, H (KEK, Tsukuba) ; Ohmi, K (KEK, Tsukuba) ; Tobiyama, M (KEK, Tsukuba) ; Shibata, K (KEK, Tsukuba)
Various countermeasures against the electron cloud effect (ECE) were adopted for the positron ring of SuperKEKB. During Phase-1 commissioning from February to June 2016, however, the ECE was observed, such as a blow up of the vertical beam size. [...]
2020 - 7 p.
Fulltext from publisher: PDF;
In : ECLOUD’18: Proceedings of the Joint INFN-CERN-ARIES Workshop on Electron-Cloud Effects, La Biodola, Isola d'Elba, Italy, 3 - 7 Jun 2018, pp.201-208 (CERN-2020-007)
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2020-10-01 06:01 |
ECLOUD’18 summary and outlook
/ Cimino, R (Frascati) ; Zimmermann, F (CERN)
This article reports some highlights from the joint INFN/ARIES workshop ECLOUD’18. We focus on electron-cloud eects in the LHC and at SuperKEKB, predictions for future machines like FCC-hh, HE-LHC and FCC-ee, models and parameters for the secondary-emission yield, recent trends in electron-cloud simulations, mitigation measures, and novel phenomena. [...]
2020 - 8 p.
Fulltext from publisher: PDF;
In : ECLOUD’18: Proceedings of the Joint INFN-CERN-ARIES Workshop on Electron-Cloud Effects, La Biodola, Isola d'Elba, Italy, 3 - 7 Jun 2018, pp.229-236 (CERN-2020-007)
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