CERN Accelerating science

LHC

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2014-10-24
11:43
Test and Simulation Results for Quenches Induced by Fast Losses on a LHC Quadrupole / Bracco, Ch (CERN, Switzerland) ; Auchmann, B (CERN, Switzerland) ; Bartmann, W (CERN, Switzerland) ; Bednarek, M (CERN, Switzerland) ; Lechner, A (CERN, Switzerland) ; Sapinski, M (CERN, Switzerland) ; Vittal Shetty, N (CERN, Switzerland) ; Schmidt, R (CERN, Switzerland) ; Solfaroli Camillocci, M (CERN, Switzerland) ; Verweij, A (CERN, Switzerland)
A test program for beam induced quenches was started in the LHC in 2011 in order to reduce as much as possible BLM-triggered beam dumps, without jeopardising the safety of the superconducting magnets. A first measurement was performed to asses the quench level of a quadrupole located in the LHC injection region in case of fast (ns) losses. [...]
CERN-ACC-2014-0232.- Geneva : CERN, 2014 - 4 p. Fulltext: PDF;
In : 5th International Particle Accelerator Conference, Dresden, Germany, 15 - 20 Jun 2014, pp.IPAC

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2014-10-22
20:02
Future Hadron Colliders from physics perspectives to technology R&D / Barletta, W (MIT, UCLA) ; Battaglia, M (CERN, LBL, SCIPP) ; Klute, M (MIT) ; Mangano, M (CERN) ; Prestemon, S (LBL) ; Rossi, L (CERN) ; Skands, P (CERN)
High energy hadron colliders have been instrumental to discoveries in particle physics at the energy frontier and their role as discovery machines will remain unchallenged for the foreseeable future. The full exploitation of the LHC is now the highest priority of the energy frontier collider program. [...]
CERN-ACC-2014-0230.- Geneva : CERN, 2014 - 17 p. - Published in : Nucl. Instrum. Methods Phys. Res. A: 764 (2014) , pp. 352-368 Fulltext: PDF;

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2014-10-21
12:10
The Large Hadron Collider of CERN and the roadmap toward higher performance / Rossi, L (CERN)
The Large Hadron Collider is exploring the new frontier of particle physics. It is the largest and most ambitious scientific instrument ever built and 100 years after the Rutherford experiment it continues that tradition of “smashing atoms” to unveil the secret of the infinitely small. [...]
CERN-ACC-2014-0225.- Geneva : CERN, 2012 - 14 p. Fulltext: PDF;
In : Subnuclear Physics: Past, Present and Future, Vatican City, Vatican City State, 30 Oct - 2 Nov 2011, pp.528-541

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2014-10-21
11:04
LS1 “First Long Shutdown of LHC and its Injector Chains” / Foraz, K ; Baird, S ; Barberan, M ; Bernardini, M ; Coupard, J ; Gilbert, N ; Hay, D ; Mataguez, S ; McFarlane, D
The LHC and its Injectors were stopped in February 2013, in order to maintain, consolidate and upgrade the different equipment of the accelerator chain, with the goal of achieving LHC operation at the design energy of 14 TeV in the centre-of-mass. [...]
CERN-ACC-POSTER-2014-0001.
- 2014. - 1 p.
Full text

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2014-10-21
10:54
Optimisation and Implementation of the R2E Shielding and Relocation Mitigation Measures at the LHC during LS1 / Perrot, A L ; Andujar, O ; Barberan Marin, M ; Brugger, M ; Corso, J P ; Foraz, K ; Jeckel, M ; Lazzaroni, M ; Lefort, B ; Mikulec, B et al.
In the framework of the Radiation to Electronics (R2E) project, important mitigation actions are being implemented in the LHC during the first Long Shutdown (LS1) to reduce the Single Event Error (SEE) occurrence in standard electronics present in much of the equipment installed in the LHC underground areas. [...]
CERN-ACC-2014-0224.
- 2014. - 4 p.
Full text

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2014-10-21
10:33
LS1 “First Long Shutdown of LHC and its Injector Chains” / Foraz, K ; Baird, S ; Barberan, M ; Bernardini, M ; Coupard, J ; Gilbert, N ; Hay, D ; Mataguez, S ; McFarlane, D
The LHC and its Injectors were stopped in February 2013, in order to maintain, consolidate and upgrade the different equipment of the accelerator chain, with the goal of achieving LHC operation at the design energy of 14 TeV in the centre-of-mass. [...]
CERN-ACC-2014-0223.
- 2014. - 4 p.

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2014-10-08
17:19
Long Range Beam-beam Effects in the LHC / Herr, W (TRIUMF) ; Buffat, X (TRIUMF) ; Calaga, R (TRIUMF) ; Giachino, R (TRIUMF) ; Papotti, G (TRIUMF) ; Pieloni, T (TRIUMF) ; Kaltchev, D (TRIUMF)
We report on the experience with long-range beam--beam effects in the LHC, in dedicated studies as well as the experience from operation. Where possible, we compare the observations with the expectations..
arXiv:1409.4942.- Geneva : CERN, 2014 - 6 p. - Published in : CERN-2014-004, pp. 87-92 Fulltext: PDF; Published version from CERN: PDF; External link: Preprint
In : ICFA Mini-Workshop on Beam-Beam Effects in Hadron Colliders, CERN, Geneva, Switzerland, 18 - 22 Mar 2013, pp.87-92

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2014-09-26
10:03
Simulation of the CERN GTS-LHC ECR ion source extraction system with lead and argon ion beams / Toivanen, V ; Bellodi, G ; Küchler, D ; Lombardi, A ; Scrivens, R ; Stafford-Haworth, J
A comprehensive study of beam formation and beam transport has been initiated in order to improve the performance of the CERN heavy ion injector, Linac3. [...]
CERN-ACC-2014-0205.
- 2014. - 8 p.

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2014-09-18
15:47
Scans of the Physics Debris Absorbers (TCL) at the 4TeV LHC / Marsili, A ; Bruce, R ; Quaranta, E ; Redaelli, S ; Salvachua, B ; Valentino, G
At the Large Hadron Collider (LHC), dedicated physics debris collimators (TCL) protect the machine from the collision products at the high-luminosity experiments. [...]
CERN-ACC-NOTE-2014-0064.
- 2014. - 24 p.
Full text

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2014-09-17
12:26
SPS Beam Steering for LHC Extraction / Gianfelice Wendt, E (Fermilab) ; Bartosik, H (-) ; Cornelis, K (-) ; Norderhaug Drosdal, L (-) ; Goddard, B (-) ; Kain, V (-) ; Meddahi, M (-) ; Papaphilippou, Y (-) ; Wenninger, J (-)
Beside producing beams for fixed target operation, the CERN Super Proton Synchrotron (SPS) accelerates beams for injection into the Large Hadron Collider (LHC). [...]
CERN-ACC-2014-0204.
- 2014. - 3 p.

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