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2019-07-17
12:06
Numerical and experimental studies to model and reduce the impedance in the CERN Super Proton Synchrotron (SPS) / Beck, Mario
Intensity-driven beam instabilities are studied in simulations with a refined impedance model and in experimental measurements for this thesis. The High Luminosity Large Hadron Collider (HL-LHC) project at CERN aims for an increase in the integrated luminosity in the Large Hadron Collider (LHC). [...]
CERN-THESIS-2018-433.- 181 p. Fulltext: PDF; External link: Approve this document (restricted)

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2019-07-17
09:29
Q drift during debunching time / Meer, S van der
CERN-SPS-Tech-Note-76-077-APS ; SPS-PS-Int-Note-76-77. - 1976. - 5 p.
Full text

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2019-07-17
08:01
Beamline Design for Plasma-Wakefield Acceleration Experiments at MAX IV / Svensson, Jonas Björklund (Lund U.) ; Ekerfelt, Henrik (Lund U.) ; Lundh, Olle (Lund U.) ; Mansten, Erik (Lund U., MAX-lab) ; Andersson, Joel (Lund U., MAX-lab) ; Kotur, Marija (Lund U., MAX-lab) ; Lindau, Filip (Lund U., MAX-lab) ; Thorin, Sara (Lund U., MAX-lab) ; Charles, Tessa K (CERN ; Melbourne U.)
The MAX IV Laboratory is a synchrotron radiation user facility located just outside the city of Lund, Sweden. The facility is made up of two storage rings, at 3 GeV and 1.5 GeV, respectively, and a linear accelerator, serving as a full-energy injector for the rings as well as a driver for the Short-Pulse Facility (SPF) located downstream of the extraction point to the 3 GeV ring. [...]
2019 - 4 p. - Published in : 10.1109/AAC.2018.8659401
In : 18th Advanced Accelerator Concepts Workshop, Breckenridge, CO, US, 12 - 17 Aug 2018, pp.8659401

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2019-07-16
17:43
Emittance growth in collision with optimised ADT settings (MD3291) / Buffat, Xavier (CERN) ; Furuseth, Sondre (EPFL - Ecole Polytechnique Federale Lausanne (CH)) ; Valuch, Daniel (CERN) ; Soderen, Martin (CERN)
A short end of fill experiment, aiming at evaluating the variation of the emittance growth rate on operational beams in collision when reducing the bandwidth of the transverse damper, is described in this note [...]
CERN-ACC-NOTE-2019-0028. - 2019. - 6 p.

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2019-07-16
17:34
Intensity dependance of the train instability threshold and high pile-up test with 12b trains (MD3294) / Buffat, Xavier (CERN) ; Amorim, David (Universite Grenoble-Alpes (FR)) ; Antipov, Sergey (CERN) ; Bartosik, Hannes (CERN) ; Crockford, Guy (CERN) ; Furuseth, Sondre (EPFL - Ecole Polytechnique Federale Lausanne (CH)) ; Iadarola, Giovanni (CERN) ; Levens, Tom (CERN) ; Metral, Elias (CERN) ; Mounet, Nicolas (CERN) et al.
As signs of electron cloud driven instabilities at top energy were observed in MDs in 2017 even with short trains(12b), an additional experiment was performed in 2018 to assess the intensity scaling of this instability mechanism using high intensity 12b trains available from the existing injector chain, i.e [...]
CERN-ACC-NOTE-2019-0027. - 2019. - 8 p.

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2019-07-16
16:26
Noise studies with new ADT pickups (MD4143) / Buffat, Xavier (CERN) ; Albert, Markus (CERN) ; Amorim, David (Universite Grenoble-Alpes (FR)) ; Antipov, Sergey (CERN) ; Crockford, Guy (CERN) ; Furuseth, Sondre (EPFL - Ecole Polytechnique Federale Lausanne (CH)) ; Komppula, Jani Paavo Olavi ; Kotzian, Gerd (CERN) ; Mounet, Nicolas (CERN) ; Oeftiger, Adrian (GSI - Helmholtzzentrum fur Schwerionenforschung GmbH (DE)) et al.
An experiment aiming at characterizing the performance of a new engineering prototype for the ADT pickup readout electronics with a low noise floor from the point of view of beam stability and emittance growth in collision is described in this note [...]
CERN-ACC-NOTE-2019-0026. - 2019. - 12 p.

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2019-07-16
12:16
The International Particle Physics Outreach Group Who we are, what we do and what we hope to accomplish / Goldfarb, Steven (University of Melbourne (AU))
Presentation made to the First Meeting of the International Gravitational Outreach Group in Valencia, Spain. The talk provides a brief description of IPPOG, its goals, history, accomplishments, and future ambitions, with the aim of inspiring the Gravitational Wave outreach community to pursue a similar mission in that field..
IPPOG-CONF-SLIDES-003.- Geneva : CERN, 2019 - Published in : IPPOG
- Published in : Particle Physics Masterclasses Powerpoint Slides: PPTX;

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2019-07-12
12:57
Future Challenges in Particle Physics Education and Outreach / Beck, Hans Peter (Universitaet Bern (CH))
The European Particle Physics Strategy Update 2020 discusses what Europe, taking into account the worldwide particle physics landscape, sees as the highest priorities for particle physics research in the coming decades. A wide spectrum of proposals and opportunities are examined to explore the basic building blocks of matter, the structure of time and space, and with it the origins of our Universe. [...]
IPPOG-CONF-SLIDES-002.- Geneva : CERN, 2019 EPS HEPP 2019, 10-17 July, Ghent, Belgium : PDF;

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2019-07-11
06:00
Design studies of a compact superconducting rf crab cavity for future colliders using Nb/Cu technology / Papke, K (CERN) ; Carvalho, A A (CERN) ; Zanoni, C (CERN) ; Grudiev, A (CERN)
The design of a compact crab cavity using Nb/Cu technology is presented. The cavity shape is based on a ridged waveguide resonator with wide-open apertures to provide access to the inner surface of the cavity and facilitate coating. [...]
2019 - 14 p. - Published in : Phys. Rev. Accel. Beams 22 (2019) 072001 Fulltext: PDF;

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2019-07-11
06:00
Future circular collider injection and extraction kicker topologies and solid state generators / Barnes, M J (CERN) ; Bartmann, W (CERN) ; Burkart, F (CERN) ; Ducimetière, L (CERN) ; Goddard, B (CERN) ; Kramer, T (CERN) ; Senaj, V (CERN) ; Stadlbauer, T (CERN) ; Woog, D (CERN) ; Barna, D (Wigner RCP, Budapest) et al.
A 100 TeV center-of-mass energy frontier proton collider, in a new tunnel of 80–100 km circumference, is a central part of CERN’s Future Circular Colliders (FCC) design study. The designs of the injection and extraction systems of the FCC are initially based upon the parameters of the injection and extraction systems of the Large Hadron Collider and a preliminary study of the FCC beam optics and lattice. [...]
2019 - 12 p. - Published in : Phys. Rev. Accel. Beams 22 (2019) 071001 Fulltext: PDF;

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