CERN Accelerating science

LHC MD Notes

新增:
2019-04-08
17:53
MD3284: Partially Stripped Ions in the LHC / Schaumann, Michaela (CERN) ; Abramov, Andrey (University of London (GB)) ; Alemany Fernandez, Reyes (CERN) ; Argyropoulos, Theodoros (CERN) ; Bartosik, Hannes (CERN) ; Biancacci, Nicolo (CERN) ; Bohl, Thomas (CERN) ; Bracco, Chiara (CERN) ; Bruce, Roderik (CERN) ; Burger, Stephane (CERN) et al.
On 25 July 2018 partially stripped lead ions with one remaining electron (208Pb81+) were injected, accelerated and stored in the LHC for the first time in the scope of MD3284. [...]
CERN-ACC-NOTE-2019-0012.
- 2019.

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2019-04-04
11:29
MD3288: Instability latency with controlled noise / Furuseth, Sondre (EPFL - Ecole Polytechnique Federale Lausanne (CH)) ; Buffat, Xavier (CERN) ; Metral, Elias (CERN) ; Valuch, Daniel (CERN) ; Salvant, Benoit (CERN) ; Amorim, David (Universite Grenoble-Alpes (FR)) ; Mounet, Nicolas (CERN) ; Soderen, Martin (CERN) ; Antipov, Sergey (CERN) ; Pieloni, Tatiana (EPFL - Ecole Polytechnique Federale Lausanne (CH)) et al.
During this MD, performed on June 14th and July 26th, 2018, the latency of single bunch instabilities was tested with an external controllable noise produced by the ADT kicker. [...]
CERN-ACC-NOTE-2019-0011.
- 2019. - 29 p.
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2019-03-21
12:05
MD4036: New ADT signal processing for large tune acceptance / Komppula, Jani Paavo Olavi ; Buffat, Xavier (CERN) ; Kotzian, Gerd (CERN) ; Li, Kevin Shing Bruce (CERN) ; Valuch, Daniel (CERN)
Transverse feedback system (ADT) performance can be optimized with digital FIR filters [...]
CERN-ACC-NOTE-2019-0008.
- 2019. - 20 p.
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2018-12-17
15:31
MD3344 - Fully-Automatic Angular Alignment of LHC Collimators using Machine Learning / Azzopardi, Gabriella (University of Malta (MT)) ; Valentino, Gianluca (University of Malta (MT)) ; Salvachua Ferrando, Belen Maria (CERN)
A complex collimation system is installed in the LHC to protect its sensitive equipment from unavoidable beam losses. [...]
CERN-ACC-NOTE-2018-0083.
- 2018. - 10 p.
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2018-11-22
16:56
Crystal Collimation Cleaning Measurements with Lead Ion Beams in LHC / Rossi, Roberto (Sapienza Universita e INFN, Roma I (IT)) ; Aberle, Oliver (CERN) ; Andreassen, Odd Oyvind (CERN) ; Butcher, Mark (CERN) ; Dionisio Barreto, Cristovao Andre (CERN) ; Masi, Alessandro (CERN) ; Mirarchi, Daniele (University of Manchester (GB)) ; Montesano, Simone (Universita e INFN, Bologna (IT)) ; Lamas Garcia, Inigo (CERN) ; Redaelli, Stefano (CERN) et al.
During this MD, performed on November the 26th, 2016, bent silicon crystals were tested with lead ion beams for a possible usage of crystal-assisted collimation [...]
CERN-ACC-NOTE-2018-0077.
- 2016. - 12 p.
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2018-11-15
17:27
MD3343 - Fully-Automatic Parallel Collimation Alignment using Machine Learning / Azzopardi, Gabriella (University of Malta (MT)) ; Valentino, Gianluca (University of Malta (MT)) ; Salvachua Ferrando, Belen Maria (CERN)
The collimation system protects the LHC and its sensitive equipment form unavoidable beam losses [...]
CERN-ACC-NOTE-2018-0071.
- 2018. - 8 p.
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2018-11-15
17:07
MD1653 - Part 1: Characterisation of BLM Response at Collimators / Azzopardi, Gabriella (University of Malta (MT)) ; Valentino, Gianluca (University of Malta (MT)) ; Salvachua Ferrando, Belen Maria (CERN)
The Large Hadron Collider (LHC) has a collimation system which uses an alignment procedure to align the collimators around the beam [...]
CERN-ACC-NOTE-2018-0070.
- 2018. - 8 p.
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2018-10-11
14:05
Beam 2 Crystal Characterization Measurements with Proton Beams in the LHC / Rossi, Roberto (Sapienza Universita e INFN, Roma I (IT)) ; Aberle, Oliver (CERN) ; Andreassen, Odd Oyvind (CERN) ; Butcher, Mark (CERN) ; Dionisio Barreto, Cristovao Andre (CERN) ; Masi, Alessandro (CERN) ; Mirarchi, Daniele (University of Manchester (GB)) ; Montesano, Simone ; Lamas Garcia, Inigo (CERN) ; Redaelli, Stefano (CERN) et al.
In 2017, two new crystals were installed, with their goniometers, in the counterclockwise Beam 2 (B2) line [...]
CERN-ACC-NOTE-2018-0067.
- 2018. - 11 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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2018-07-24
10:28
Report from LHC MD 2171: Dynamic aperture at 6.5 TeV / Maclean, Ewen Hamish (University of Malta (MT)) ; Carlier, Felix Simon (Technische Universiteit Delft (NL)) ; Giovannozzi, Massimo (CERN) ; Tomas Garcia, Rogelio (CERN)
Throughout the LHC’s first and second operational runs, increasing emphasis has been placed on the study of nonlinear single-particle beam dynamics [...]
CERN-ACC-NOTE-2018-0054.
- 2018. - 25 p.
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