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Accelerator Physics

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2018-08-15
23:32
Validation of the LNE51 AEGIS transfer line optics and electrostatic deflector / Bass, Rachel Miranda
The Antihydrogen Experiment: Gravity, Interferometry, Spectroscopy (AEGIS) will move from its current location to another area within the Antiproton Decelerator (AD) hall. [...]
CERN-STUDENTS-Note-2018-029.
- 2018.
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2018-08-13
15:09
Review of path-length calculations for rectangular bending magnets with arbitrary pole-face angles / Berrig, Olav Ejner (CERN)
This document shows how to calculate the path-length of rectangular bending magnets in a beam line. [...]
CERN-ACC-NOTE-2018-0059.
- 2017. - 9 p.
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2018-08-10
09:55
Studies on potential use and needs of a wideband feedback system for the HL-LHC / Li, Kevin Shing Bruce (CERN) ; Arduini, Gianluigi (CERN) ; Hofle, Wolfgang (CERN) ; Iadarola, Giovanni (CERN) ; Komppula, Jani Paavo Olavi (CERN) ; Metral, Elias (CERN) ; Tomas Garcia, Rogelio (CERN)
Transverse feedback systems are one of the crucial and fundamental devices needed in high brightness proton synchrotrons to ensure a reliable and stable operation. [...]
CERN-ACC-NOTE-2018-0058.
- 2018. - 16 p.

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2018-08-09
12:13
The impact of the use of alternative RF frequencies on the TMCI thresholds for HL-LHC / Li, Kevin Shing Bruce (CERN) ; Arduini, Gianluigi (CERN) ; Iadarola, Giovanni (CERN) ; Metral, Elias (CERN) ; Rumolo, Giovanni (CERN) ; Tomas Garcia, Rogelio (CERN)
Alternative scenarios for using different configurations of RF frequencies exist and are under study for the HL-LHC. [...]
CERN-ACC-NOTE-2018-0057.
- 2018. - 9 p.

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2018-08-01
11:15
An Updated Global Optics Correction Scheme / Dilly, Joschua Werner (Ministere des affaires etrangeres et europeennes (FR)) ; Malina, Lukas (CERN) ; Tomas Garcia, Rogelio (CERN)
Currently, the linear global correction scheme implemented in the OMC software uses responses to the available correctors, computed as difference quotients by MAD-X requiring appropriate step-size. [...]
CERN-ACC-NOTE-2018-0056.
- 2018. - 15 p.
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2018-07-24
15:55
MD 2563: Optics measurement and corrections with half integer tune / Wegscheider, Andreas (Hamburg University (DE)) ; Coello De Portugal - Martinez Vazquez, Jaime Maria (Universitat Politecnica Catalunya (ES)) ; Dilly, Joschua Werner (Ministere des affaires etrangeres et europeennes (FR)) ; Fartoukh, Stephane (CERN) ; Fol, Elena (Johann-Wolfgang-Goethe Univ. (DE)) ; Garcia-Tabares Valdivieso, Ana (Universidad Complutense (ES)) ; Maclean, Ewen Hamish (University of Malta (MT)) ; Papaphilippou, Yannis (CERN) ; Pellegrini, Dario (CERN) ; Persson, Tobias Hakan Bjorn (CERN) et al.
This note reports on the optics measurement and correction actions that were performed during the study of the LHC at a working point close to the half integer resonance..
CERN-ACC-NOTE-2018-0055.
- 2018. - 11 p.

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2018-07-23
16:30
Optics measurements and corrections at β∗= 2.5 km / Garcia-Tabares Valdivieso, Ana (Universidad Complutense (ES)) ; Burkhardt, Helmut (CERN) ; Carlier, Felix Simon (Technische Universiteit Delft (NL)) ; Coello De Portugal - Martinez Vazquez, Jaime Maria (Universitat Politecnica Catalunya (ES)) ; Fol, Elena (Johann-Wolfgang-Goethe Univ. (DE)) ; Maclean, Ewen Hamish (University of Malta (MT)) ; Malina, Lukas (CERN) ; Tomas Garcia, Rogelio (CERN) ; Wegscheider, Andreas (Hamburg University (DE))
This paper reports on the results of the high β∗ (2.5 km) optics measurements and corrections for the LHC at 6.5 TeV in 2016..
CERN-ACC-NOTE-2018-0052.
- 2018. - 18 p.
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2018-07-23
16:20
MD2148: Flat optics / Coello De Portugal - Martinez Vazquez, Jaime Maria (Universitat Politecnica Catalunya (ES)) ; Fartoukh, Stephane (CERN) ; Fol, Elena (Johann-Wolfgang-Goethe Univ. (DE)) ; Garcia-Tabares Valdivieso, Ana (Universidad Complutense (ES)) ; Maclean, Ewen Hamish (University of Malta (MT)) ; Malina, Lukas (CERN) ; Persson, Tobias Hakan Bjorn (CERN) ; Skowronski, Piotr Krzysztof (CERN) ; Solfaroli Camillocci, Matteo (CERN) ; Tomas Garcia, Rogelio (CERN) et al.
This note reports on the first attempt to measure and correct optics errors at β∗=60/30 cm and β∗=60/15 cm flat optics. [...]
CERN-ACC-NOTE-2018-0051.
- 2018. - 14 p.
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2018-07-17
04:14
Emittance reduction with variable bending magnet strengths: Analytical optics considerations / Papadopoulou, S. (CERN ; Crete U. ; Crete, Tech. U.) ; Antoniou, F. (CERN) ; Papaphilippou, Y. (CERN)
One of the main challenges of the lattice design of $e^+e^{{-}} $ synchrotrons, used as light sources or damping rings, is the minimization of the emittance. [...]
arXiv:1806.07318.
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2018-07-16
20:11
Online Transverse Beam Instability Detection in the LHC. High Throughput Real-Time Parallel Data Analysis / Soderen, Martin
This thesis presents the ADT transverse instability detection system, the next generation of instability detection in the LHC at CERN, Geneva [...]
CERN-THESIS-2017-401 LIU-IDA/LITH-EX-A--17/053--SE. - 125 p.

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