CERN Accelerating science

LHC MD Notes

Darreres entrades:
2019-06-17
15:43
Crystal Collimation Tests with Pb Ion Beams / D'Andrea, Marco (Universita e INFN, Padova (IT)) ; Mirarchi, Daniele (University of Manchester (GB)) ; Redaelli, Stefano (CERN) ; Fomin, Alex (NSC Kharkiv Institute of Physics and Technology (UA)) ; Belli, Eleonora (CERN) ; Salvachua Ferrando, Belen Maria (CERN) ; Nevay, Laurence James (University of London (GB)) ; Rossi, Roberto (Sapienza Universita e INFN, Roma I (IT)) ; Scandale, Walter (CERN) ; Montesano, Simone (Universita e INFN, Bologna (IT)) et al.
During MD4168, performed on November 27th 2018, silicon crystals for a crystal-assisted collimation system were tested. [...]
CERN-ACC-NOTE-2019-0024.
- 2019.
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2019-06-17
15:38
Operational Aspects of Crystal Collimation with Proton Beams / D'Andrea, Marco (Universita e INFN, Padova (IT)) ; Mirarchi, Daniele (University of Manchester (GB)) ; Redaelli, Stefano (CERN) ; Salvachua Ferrando, Belen Maria (CERN) ; Nevay, Laurence James (University of London (GB)) ; Rossi, Roberto (Sapienza Universita e INFN, Roma I (IT)) ; Scandale, Walter (CERN) ; Montesano, Simone (Universita e INFN, Bologna (IT)) ; Galluccio, Francesca (Universita e sezione INFN di Napoli (IT)) ; Serrano Galvez, Pablo (Universidad de Oviedo (ES)) et al.
During MD4167, performed on September 12th 2018, silicon crystals for a crystal-assisted collimation system were tested, with particular focus on operational aspects such as evaluation of cleaning performances and deployment during dynamical phases of the machine. [...]
CERN-ACC-NOTE-2019-0023.
- 2019.
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2019-06-17
15:34
Crystal Collimation Tests with Proton Beams / D'Andrea, Marco (Universita e INFN, Padova (IT)) ; Mirarchi, Daniele (University of Manchester (GB)) ; Redaelli, Stefano (CERN) ; Salvachua Ferrando, Belen Maria (CERN) ; Nevay, Laurence James (University of London (GB)) ; Rossi, Roberto (Sapienza Universita e INFN, Roma I (IT)) ; Scandale, Walter (CERN) ; Montesano, Simone (Universita e INFN, Bologna (IT)) ; Galluccio, Francesca (Universita e sezione INFN di Napoli (IT)) ; Serrano Galvez, Pablo (Universidad de Oviedo (ES)) et al.
During MD3327, performed in two steps on June 14th and July 27th 2018, silicon crystals for a crystal-assisted collimation system were tested, with particular focus on the newly installed crystal on the horizontal plane of Beam 2. [...]
CERN-ACC-NOTE-2019-0022.
- 2019.
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2019-06-11
16:46
LHC MDs 3163, 3164, and 3166: Injection oscillations throughout the cycle / Timko, Helga (CERN) ; Argyropoulos, Theodoros (CERN) ; Baudrenghien, Philippe (CERN) ; Calaga, Rama (CERN) ; Karpov, Ivan (CERN) ; Medina Medrano, Luis Eduardo (CERN) ; Peauger, Franck (CERN) ; Shaposhnikova, Elena (CERN) ; Turaj, Katarzyna (CERN)
This note summarizes three inter-related machine development sessions that were performed in the LHC in the course of 2018. [...]
CERN-ACC-NOTE-2019-0021.
- 2019.
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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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