CERN Accelerating science

LHC

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2014-10-31
14:41
New Mechanical Concept for Nb3Sn Quadrupole / Karppinen, Mikko (CERN)
A new mechanical design concept for the Nb3Sn quadrupoles has been developed with a goal of an accelerator quality magnet that can be industrially produced in large series. [...]
CERN-ACC-2014-0244.
- 2014. - 18 p.
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2014-10-30
17:16
Upgrade of the SPS Injection Kicker System for the LHC High Luminosity Operation with Heavy Ion Beam / Kramer, T (CERN, Switzerland) ; Borburgh, J (CERN, Switzerland) ; Goddard, B (CERN, Switzerland) ; Ducimetière, L (CERN, Switzerland) ; Sermeus, L (CERN, Switzerland) ; Uythoven, J (CERN, Switzerland) ; Velotti, FM (CERN, Switzerland)
In the context of the LHC High Luminosity Upgrade project a performance upgrade for heavy ions is envisaged. One of the performance limitations is the rise time of the present SPS injection kicker system MKP. [...]
CERN-ACC-2014-0243.- 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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2014-10-30
16:50
High Voltage Performance of the Beam Screen of the LHC Injection Kicker Magnets / Barnes, MJ (CERN, Switzerland) ; Adraktas, P (CERN, Switzerland) ; Bregliozzi, G (CERN, Switzerland) ; Calatroni, S (CERN, Switzerland) ; Costa Pinto, P (CERN, Switzerland) ; Day, H (CERN, Switzerland) ; Ducimetière, L (CERN, Switzerland) ; Kramer, T (CERN, Switzerland) ; Namora, V (CERN, Switzerland) ; Mertens, V (CERN, Switzerland) et al.
The LHC injection kicker magnets include beam screens to shield the ferrite yokes against wakefields resulting from the high intensity beam. The screening is provided by conductors lodged in the inner wall of a ceramic support tube. [...]
CERN-ACC-2014-0242.- 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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2014-10-30
16:39
Cooling of the LHC Injection Kicker Magnet Ferrite Yoke: Measurements and Future Proposals / Sobiech, Z (CERN, Switzerland) ; Barnes, MJ (CERN, Switzerland) ; Bouleghlimat, S (CERN, Switzerland) ; Ducimetière, L (CERN, Switzerland) ; Garlaschè, M (CERN, Switzerland) ; Kramer, T (CERN, Switzerland) ; Namora, V (CERN, Switzerland) ; Noulibos, R (CERN, Switzerland) ; Sillanoli, Y (CERN, Switzerland) ; Weterings, W (CERN, Switzerland)
LHC operation with high intensity beam, stable for many hours, resulted in significant heating of the ferrite yoke of the LHC Injection Kicker Magnets. For one kicker magnet the ferrite yoke approached its Curie temperature. [...]
CERN-ACC-2014-0241.- Geneva : CERN, 2014 - 4 p.
In : 5th International Particle Accelerator Conference, Dresden, Germany, 15 - 20 Jun 2014, pp.IPAC

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2014-10-30
16:09
Beam Dumping Impedance of the New Beam Screen of the LHC Injection Kicker Magnets / Day, H (CERN, Switzerland) ; Barnes, MJ (CERN, Switzerland) ; Caspers, F (CERN, Switzerland) ; Métral, E (CERN, Switzerland) ; Salvant, B (CERN, Switzerland) ; Uythoven, J (CERN, Switzerland)
The LHC injection kicker magnets experienced significant beam induced heating of the ferrite yoke, with high beam currents circulating for many hours, during operation of the LHC in 2011 and 2012. The causes of this beam induced heating were studied in depth and an improved beam screen implemented to reduce the impedance. [...]
CERN-ACC-2014-0240.- 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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2014-10-30
15:37
Performance Studies of the SPS Beam Dump System for HL-LHC Beams / Velotti, FM (CERN, Switzerland) ; Aberle, O (CERN, Switzerland) ; Bracco, C (CERN, Switzerland) ; Carlier, E (CERN, Switzerland) ; Cerutti, F (CERN, Switzerland) ; Cornelis, K (CERN, Switzerland) ; Ducimetiere, L (CERN, Switzerland) ; Goddard, B (CERN, Switzerland) ; Kain, V (CERN, Switzerland) ; Losito, R (CERN, Switzerland) et al.
The Super Proton Synchrotron (SPS) beam dump system is a concern for the planned High Luminosity LHC (HL-LHC) operation. The system has initially been designed for very different beam parameters compared to those which will reign after the completion of the LHC injectors upgrade, when the SPS will have to operate with unprecedented beam brightness. [...]
CERN-ACC-2014-0239.- 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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2014-10-24
11:43
Test and Simulation Results for Quenches Induced by Fast Losses on a LHC Quadrupole / Bracco, Ch (CERN) ; Auchmann, B (CERN) ; Bartmann, W (CERN) ; Bednarek, M (CERN) ; Lechner, A (CERN) ; Sapinski, M (CERN) ; Vittal Shetty, N (CERN) ; Schmidt, R (CERN) ; Solfaroli Camillocci, M (CERN) ; Verweij, A (CERN)
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.
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