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Articles by Ribes Metidieri

CERN Document Server

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By Yin Vallgren, Ribes Metidieri
| cds.cern.ch
Title Beam induced dynamic pressure during Run 2 (2015-2018) Author(s) Yin Vallgren, C (CERN) ; Ribes Metidieri, P (CERN) ; Bregliozzi, G (CERN) Imprint 8 p. In: CERN Yellow Rep. Conf. Proc.
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Studies of PACMAN effects in the HL-LHC

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By Ribes Metidieri
| cds.cern.ch
Report number CERN-ACC-NOTE-2019-0037 Title Studies of PACMAN effects in the HL-LHC Download Embed Viewed by 11 users Author(s) Ribes Metidieri, Ariadna (University of Barcelona (ES)) ; Buffat, Xavier (CERN) Corporate author(s) CERN. Geneva. ATS Department Imprint 03 Sep 2019. - 34 p.
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TDIS pressure profile simulations after LS2

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By Ribes Metidieri, Yin Vallgren
| cds.cern.ch
Internal Note Report number CERN-ACC-NOTE-2018-0075 Title TDIS pressure profile simulations after LS2 Author(s) Ribes Metidieri, Patricia (University of Barcelona (ES)) ; Yin Vallgren, Christina (CERN) ; Skripka, Galina (CERN) ; Iadarola, Giovanni (CERN) ; Bregliozzi, Giuseppe (CERN) Corporate author(s) CERN. Geneva. ATS Department Imprint 16 Oct 2018. - 18 p.
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Status of the studies on collective effects involving beam-beam interactions at the HL-LHC

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By Ribes Metidieri, Goncalves Jorge, Barranco Garcia
| cds.cern.ch
This note summarised the status of the studies on the coherent beam-beam effects in the HL-LHC project. It is shown that the obit, tune, chromaticity and dynamic β effects due to head-on and long-range beam-beam interactions are tolerable without dedicated mitigations in the baseline scenario.
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The Ghost Train Instability (MDs 2066 and 2936)

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By Lee Robert, Alemany Fernandez, Felix Pol Gaston, Ribes Metidieri
| cds.cern.ch
This notes describes experimental studies of the octupole strength required to stabilise bunch trains at 6.5 TeV in the LHC, performed over 3 MD blocks in 2017. An instability affecting the bunches at the head of the train in the horizontal plane of B1 was observed and could not be stabilised with the maximum octupole current available in the first 2 MD tests. The instability was no longer observed in the last experiment in similar conditions.
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