2018-05-22
11:55 |
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LHCb Upgrades and operation at 1034 cm-2 s-1 luminosity –A first study
/ Efthymiopoulos, Ilias (CERN) ; Arduini, Gianluigi (CERN) ; Baglin, Vincent (CERN) ; Burkhardt, Helmut (CERN) ; Cerutti, Francesco (CERN) ; Claudet, Serge (CERN) ; Di Girolamo, Beniamino (CERN) ; De Maria, Riccardo (CERN) ; Esposito, Luigi Salvatore (CERN) ; Karastathis, Nikos (CERN) et al.
Presently, the LHCb experiment at IP8 operates at reduced luminosity (~4.0 1032 cm-2 s-1) compared to ATLAS and CMS experiments. [...]
CERN-ACC-NOTE-2018-0038.
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2018.
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2018-02-21
12:14 |
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2018-01-25
13:18 |
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2017-12-21
09:43 |
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2017-10-18
06:37 |
Improved Protection of the Warm Magnets of the LHC Betatron Cleaning Insertion
/ Bahamonde Castro, Cristina (CERN) ; Cerutti, Francesco (CERN) ; Fessia, Paolo (CERN) ; Lechner, Anton (CERN) ; Mereghetti, Alessio (CERN) ; Mirarchi, Daniele (CERN) ; Redaelli, Stefano (CERN) ; Skordis, Eleftherios (U. Liverpool (main) ; CERN)
After the High Luminosity (HL) upgrade in 2024-2026, the LHC is anticipated to increase its integrated luminosity by a factor of 10 beyond its original design value of 300 fb-1. In preparation for this, several improvements to the equipment will already be implemented during the next Long Shutdown (LS2) starting in 2019. [...]
CERN-ACC-2017-120.-
2017 - 4 p.
- Published in : 10.18429/JACoW-IPAC2017-MOPAB004
Fulltext: PDF;
In : 8th International Particle Accelerator Conference, Copenhagen, Denmark, 14 - 19 May 2017, pp.MOPAB004
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2017-10-18
06:36 |
Studies on Luminous Region, Pile-up and Performance for HL-LHC Scenarios
/ Medina Medrano, Luis (CERN ; Unlisted, MX) ; Arduini, Gianluigi (CERN) ; Tomás, Rogelio (CERN)
Studies on luminous region and pile-up density are of great interest for the experiments at the future High Luminosity LHC (HL-LHC) in order to optimize the detector performance. The evolution of these parameters at the two main interaction points of the HL-LHC along optimum physics fills is studied for the baseline and alternative operational scenarios with the latest set of parameters, including a refined description of the longitudinal bunch profile. [...]
CERN-ACC-2017-135.-
2017 - 4 p.
- Published in : 10.18429/JACoW-IPAC2017-TUPIK089
Fulltext: PDF;
In : 8th International Particle Accelerator Conference, Copenhagen, Denmark, 14 - 19 May 2017, pp.TUPIK089
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2017-10-18
06:36 |
HL-LHC Alignment Requirements and Associated Solutions
/ Mainaud Durand, Helene (CERN) ; Bartolome-Jimenez, Sonia (CERN) ; Dijoud, Thibault (CERN) ; Duquenne, Mathieu (ESGT, Le Mans) ; Herty, Andreas (CERN) ; Rude, Vivien (ESGT, Le Mans) ; Sosin, Mateusz (CERN)
To increase by more than 10 times the luminosity reach w.r.t the first 10 years of the LHC lifetime, the HL-LHC project will replace nearly 1.2 km of the accelerator during the Long Shutdown 3 scheduled in 2024 [1][2][3]. This paper presents the HL-LHC alignment and internal metrology requirements of all the new components to be installed, from the magnet components to the beam instrumentation and vacuum devices. [...]
CERN-ACC-2017-138.-
2017 - 4 p.
- Published in : 10.18429/JACoW-IPAC2017-TUPIK085
Fulltext: PDF;
In : 8th International Particle Accelerator Conference, Copenhagen, Denmark, 14 - 19 May 2017, pp.TUPIK085
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2017-10-18
06:36 |
Radiation Levels at the LHC: 2012, 2015 and 2016 Proton Physics Operations in View of HL-LHC requirements
/ Martinella, Corinna (CERN) ; Brugger, Markus (CERN) ; Danzeca, Salvatore (CERN) ; Garcia Alia, Ruben (CERN) ; Kadi, Yacine (CERN) ; Stein, Oliver (CERN) ; Xu, Chen (CERN)
The variety of beam losses produced in the Large Hadron Collider (LHC) creates a mixed and complex radiation field. During 2012, 2015 and 2016, Beam Loss Monitors and RadMons were used to monitor the inte-grated dose and the High Energy Hadrons fluence in order to anticipate the electronics degradation and inves-tigate the cause of failures. [...]
CERN-ACC-2017-142.-
2017 - 3 p.
- Published in : 10.18429/JACoW-IPAC2017-TUPVA015
Fulltext: PDF;
In : 8th International Particle Accelerator Conference, Copenhagen, Denmark, 14 - 19 May 2017, pp.TUPVA015
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2017-10-18
06:36 |
Lessons Learnt from the 2016 LHC Run and Prospects for HL-LHC Availability
/ Apollonio, Andrea (CERN) ; Rey Orozko, Odei (CERN) ; Schmidt, Ruediger (CERN) ; Valette, Matthieu (CERN) ; Wollmann, Daniel (CERN) ; Zerlauth, Markus (CERN)
The LHC exhibited unprecedented availability during the 2016 proton run, producing about 40 fb-1 of integrated luminosity, surpassing the sum of production during the 4 previous years. This was achieved while running steadily with a peak luminosity above the design target of 1034 cm- 2s^{−1}. [...]
CERN-ACC-2017-145.-
2017 - 4 p.
- Published in : 10.18429/JACoW-IPAC2017-TUPVA006
Fulltext: PDF;
In : 8th International Particle Accelerator Conference, Copenhagen, Denmark, 14 - 19 May 2017, pp.TUPVA006
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2017-10-18
06:36 |
Measurement of Beta-Beating Due to Strong Head-on Beam-Beam Interactions in the LHC
/ Gonçalves Jorge, Patrik (Ecole Polytechnique, Lausanne) ; Barranco García, Javier (Ecole Polytechnique, Lausanne) ; Buffat, Xavier (CERN) ; Carlier, Felix (CERN) ; Coello de Portugal, Jaime Maria (CERN) ; Fol, Elena (CERN) ; Medina Medrano, Luis (CERN) ; Pieloni, Tatiana (Ecole Polytechnique, Lausanne) ; Tomás, Rogelio (CERN) ; Wegscheider, Andreas (CERN)
The LHC operation relies on a good knowledge of the optics, usually corrected in absence of beam-beam interactions. In a near future, both the LHC and the HL-LHC will need to cope with large head-on beam-beam parameters, the impact on the optics needs to be understood and, if necessary, corrected. [...]
CERN-ACC-2017-151.-
2017 - 4 p.
- Published in : 10.18429/JACoW-IPAC2017-TUPVA030
Fulltext: PDF;
In : 8th International Particle Accelerator Conference, Copenhagen, Denmark, 14 - 19 May 2017, pp.TUPVA030
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