CERN Accelerating science

ATS Reports

新增:
2018-10-29
09:24
Machine Parameters and Projected Luminosity Performance of Proposed Future Colliders at CERN / Bordry, Frederick (CERN) ; Benedikt, Michael (CERN) ; Bruning, Oliver (CERN) ; Jowett, John (CERN) ; Rossi, Lucio (CERN) ; Schulte, Daniel (CERN) ; Stapnes, Steinar (CERN) ; Zimmermann, Frank (CERN)
In response to a request from the CERN Scientific Policy Committee (SPC), the machine parameters and expected luminosity performance for several proposed post-LHC collider projects at CERN are compiled: three types of hadron colliders (HL-LHC upgrade, FCC-hh and HE-LHC), a circular lepton collider (FCC-ee), a linear lepton collider (CLIC), and three options for lepton-hadron colliders (LHeC, HE-LHeC, and FCC-eh). [...]
arXiv:1810.13022 ; CERN-ACC-2018-0037.
- 2018. - 14 p.
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2018-10-23
17:16
New SC Algorithm for MAD-X / Schmidt, Frank (CERN) ; Alexahin, Yuri (Fermi National Accelerator Lab. (US))
MAD-X allows to simulate space-charge effects by approximating the macro-particle ensemble with a Gaussian distribution and using analytic formulas for calculation of the space-charge kick at locations which should be chosen in advance e.g [...]
CERN-ACC-2018-0036.
- 2018. - 20 p.
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2018-10-12
14:35
RF design of accelerating structure for the main linac of the klystron-based first stage of CLIC at 380 GeV / Liu, Jiayang (Tsinghua University, Beijing, China; CERN, Geneva, Switzerland) ; Grudiev, Alexej (CERN)
An alternative klystron-based scenario for the first stage of Compact Linear Collider (CLIC) at 380 GeV center-of-mass energy was proposed. [...]
CERN-ACC-2018-0034 ; CLIC-Note-1082.
- 2018. - 16 p.
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2018-10-12
14:26
Natural sources of geomagnetic field variations / Heilig, Balázs (Mining and Geological Survey of Hungary, Tihany, Hungary) ; Beggan, Ciarán (British Geological Survey, United Kingdom) ; Lichtenberger, János (Eötvös University, Budapest, Hungary)
The Earth’s magnetic field is a dynamic system and varies on a wide spectrum of timescales from microseconds to hundreds of millions of years. [...]
CERN-ACC-2018-0033 ; CLIC-Note-1083.
- 2018. - 16 p.
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2018-10-10
16:26
Round telescopic optics with large telescopic index / Fartoukh, Stephane (CERN) ; Amorim, David (Universite Grenoble-Alpes (FR)) ; Antipov, Sergey (CERN) ; Bracco, Chiara (CERN) ; Bruce, Roderik (CERN) ; Buffat, Xavier (CERN) ; Carlier, Felix Simon (Technische Universiteit Delft (NL)) ; Coello De Portugal - Martinez Vazquez, Jaime Maria (Universitat Politecnica Catalunya (ES)) ; Fuster Martinez, Nuria (CERN) ; Garcia-Tabares Valdivieso, Ana (Universidad Complutense (ES)) et al.
This paper highlights the main results from the 2017 LHC MD program which was deployed to commission round ATS optics with high telescopic index, and ultimately to study their properties in terms of long-range beam-beam effect and octupole thresholds for coherent instabilities (MD2269) [...]
CERN-ACC-2018-0032.
- 2018. - 24 p.

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2018-10-10
10:18
Thermal control for the two-beam module of the compact linear collider with computational fluid dynamics simulations of conjugate heat transfer problems, with subsidiary finite-element simulations / Lam, Edmond (ETH Zurich (CH)) ; Vamvakas, Alex (National Technical Univ. of Athens (GR)) ; Aicheler, Markus (Helsinki Institute of Physics (FI)) ; Vainola, Jukka Ilmari (Helsinki Institute of Physics (FI)) ; Doebert, Steffen (CERN)
Conjugate heat transfer simulations were performed for the two-beam module of the Compact Linear Collider (CLIC). [...]
CERN-ACC-2018-0031 ; CLIC-Note-1081.
- 2018. - 130 p.
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2018-10-09
10:57
High power testing of a prototype clic structure: Td26cc r05 n3 / Lucas, Thomas Geoffrey (University of Melbourne (AU)) ; Volpi, Matteo (University of Melbourne (AU)) ; Giansiracusa, Paul Joseph (University of Melbourne (AU)) ; Rassool, Roger Paul (Australian Synchrotron (AU)) ; Argyropoulos, Theodoros (CERN) ; Bursali, Hikmet (CERN) ; Catalan-Lasheras, Nuria (CERN) ; Grudiev, Alexej (CERN) ; Mcmonagle, Gerard (CERN) ; Syrachev, Igor (CERN) et al.
Testing of high gradient accelerating structure prototypes for the Compact Linear Collider is ongoing at CERN. [...]
CERN-ACC-2018-0030 ; CLIC-Note-1080.
- 2018. - 9 p.
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2018-10-09
10:39
Radiation damage to permanent magnet materials: A survey of experimental results / Shepherd, Ben (ASTeC, STFC Daresbury Laboratory, Warrington, UK)
A large fraction of the total power consumption of the CLIC machine is taken up by electro- magnets. [...]
CERN-ACC-2018-0029 ; CLIC-Note-1079.
- 2018. - 9 p.
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2018-10-02
09:31
Effect of an externally applied magnetic field on the breakdown rate in ultra-high vacuum measured in the "large electrode system" at CERN / Shipman, Nicholas (CERN) ; Profatilova, Iaroslava (CERN) ; Perez Fontenla, Ana Teresa (CERN) ; Wuensch, Walter (CERN) ; Calatroni, Sergio (CERN)
The influence of external magnetic fields of up to 0.5 T on the breakdown rate between copper electrodes, subjected to pulsed DC voltages in ultra-high vacuum, is investigated. [...]
CERN-ACC-2018-0028 ; CLIC-Note-1078.
- 2017. - 13 p.
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2018-07-23
11:15
The economic impact of technological procurement for large-scale research infrastructures: Evidence from the Large Hadron Collider at CERN / Florio, Massimo (Università degli Studi e INFN Milano (IT)) ; Castelnovo, Paolo (Università degli Studi e INFN Milano (IT)) ; Forte, Stefano (Università degli Studi e INFN Milano (IT)) ; Rossi, Lucio (CERN) ; Sirtori, Emanuela (CSIL Centre for Industrial Studies)
The Large Hadron Collider at CERN, the European Organisation for Nuclear Research, is the world’s highest-energy particle accelerator. Its construction (1995-2008) required frontier technologies and close collaboration between CERN scientists and contracting firms. [...]
CERN-ACC-2018-0022.- Geneva : CERN, 2018 - 42 p. - Published in : Res. Pol. 47 (2018) 1853-1867 Fulltext: PDF;

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