CERN Accelerating science

CERN Yellow Report Articles

See also CERN Yellow Reports collection
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2020-10-02
06:50
Elements of QCD for hadron colliders / Salam, G P (CERN)
The aim of these lectures is to provide students with an introduction to some of the core concepts and methods of QCD that are relevant in an LHC context..
2020 - 56 p. - Published in : 10.23730/CYRSP-2020-005.1 Fulltext: PDF;
In : Proceedings of the 2018 Asia–Europe–Pacific School of High-Energy Physics, Quy Nhon, Vietnam, 12 - 25 Sep 2018, pp.1-56 (CERN-2020-005)

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2020-10-02
06:50
Flavour physics and CP violation / Nir, Y (Weizmann Inst.)
We explain the reasons for the interest in flavor physics. We describe flavor physics and the related CP violation within the Standard Model, and explain how the B-factories proved that the CKM (KM) mechanism dominates the flavor changing (CP violating) processes that have been observed in meson decays. [...]
2020 - 49 p. - Published in : 10.23730/CYRSP-2020-005.79 Fulltext: PDF;
In : Proceedings of the 2018 Asia–Europe–Pacific School of High-Energy Physics, Quy Nhon, Vietnam, 12 - 25 Sep 2018, pp.79-128 (CERN-2020-005)

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2020-10-02
06:50
Heavy-ion physics / Nguyen, M (Ecole Polytechnique)
These proceedings cover two lectures on heavy-ion physics given at the 2018 edition of the Asia-Europe-Pacific School of High-Energy Physics. After a brief introduction of basic concepts that are relevant for heavy-ion collisions, I discuss several interesting phenomena that have been observed, and mention currently still open questions..
2020 - 19 p. - Published in : 10.23730/CYRSP-2020-005.129 Fulltext: PDF;
In : Proceedings of the 2018 Asia–Europe–Pacific School of High-Energy Physics, Quy Nhon, Vietnam, 12 - 25 Sep 2018, pp.129-148 (CERN-2020-005)

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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
Facets of spacecraft charging; critical temperature and dependence on ambient electron density / Lai, Shu T (MIT ; Boston Coll.)
Spacecraft charging is important. Space plasmas, secondary and backscattered electrons, and surface conditions, are some of the main factors controlling spacecraft charging. [...]
2020 - 6 p. Fulltext form 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.137-142 (CERN-2020-007)

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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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