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Letzte Einträge:
2017-04-24
15:22
Report from LHC MD 1399: Effect of linear coupling on nonlinear observables in the LHC. / Maclean, Ewen Hamish (CERN) ; Carlier, Felix Simon (Technische Universiteit Delft (NL)) ; Giovannozzi, Massimo (CERN) ; Persson, Tobias Hakan Bjorn (CERN) ; Tomas Garcia, Rogelio (CERN)
Simulation work during Run 1 established that linear coupling had a large impact on nonlinear observables such as detuning with amplitude and dynamic aperture. [...]
CERN-ACC-NOTE-2017-0024.
- 2017. - 11 p.
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2017-04-06
14:42
MD#1182: Calibration of diamond particle detectors in IP6 / Valette, Matthieu (CERN) ; Wollmann, Daniel (CERN) ; Lindstrom, Bjorn Hans Filip (Uppsala University (SE)) ; Wiesner, Christoph (CERN)
In case of an asynchronous beam dump with a fully filled LHC machine it is expected that all standard ionisation chamber Beam Loss Monitors (IC BLM) around the LHC dumping region in IP6 will be saturated. [...]
CERN-ACC-2017-0018.
- 2017. - 8 p.
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2017-04-03
09:40
Crystal Collimation with protons at flat top energy / Rossi, Roberto (Sapienza Universita e INFN, Roma I (IT)) ; Redaelli, Stefano (CERN) ; Galluccio, Francesca (Universita e INFN, Napoli (IT)) ; Masi, Alessandro (CERN) ; Mirarchi, Daniele (CERN) ; Montesano, Simone (CERN) ; Valentino, Gianluca (University of Malta (MT)) ; Scandale, Walter (CERN)
During this MD, performed on November 6th, 2015, bent silicon crystals were tested with proton beams for a possible usage of crystal-assisted collimation. [...]
CERN-ACC-NOTE-2017-0021.
- 2017. - 6 p.
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2017-03-31
15:35
Effect of the total RF voltage on heavy ions at injection energy in the LHC / Schaumann, Michaela (CERN) ; Alemany Fernandez, Reyes (CERN) ; Jebramcik, Marc Andre (Johann-Wolfgang-Goethe Univ. (DE)) ; Jowett, John (CERN) ; Mertens, Tom (CERN)
Emittance growth and particle losses from intra-beam scattering (IBS) are an important source of beam losses, especially at injection energy, for the heavy ions in LHC. [...]
CERN-ACC-NOTE-2017-0020.
- 2017. - 11 p.
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2017-03-30
12:14
LHC MD 1279: Bunch Flattening in Physics / Timko, Helga (CERN) ; Baudrenghien, Philippe (CERN) ; Esteban Muller, Juan ; Shaposhnikova, Elena (CERN)
Vertex reconstruction is not accurate enough for LHCb when the bunch length in physics shrinks below about 0.9 ns. [...]
CERN-ACC-NOTE-2017-0019.
- 2017. - 13 p.
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2017-03-30
12:03
LHC MD 1087: Controlled Longitudinal Emittance Blow-up with Short Bunches / Timko, Helga (CERN) ; Baudrenghien, Philippe (CERN) ; Esteban Muller, Juan ; Jaussi, Michael (CERN) ; Lasheen, Alexandre (CERN) ; Shaposhnikova, Elena (CERN)
The aim of the MD was to study the controlled longitudinal emittance blow-up applied during the ramp with bunches that are slightly shorter than operational. [...]
CERN-ACC-NOTE-2017-0018.
- 2017. - 7 p.
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2017-03-30
11:33
LHC MD 652: Coupled-Bunch Instability with Smaller Emittance (all HOMs) / Esteban Muller, Juan ; shaposhnikova, Elena (CERN) ; Timko, Helga (CERN)
The aim of the MD was to measure the coupled-bunch stability from all HOM impedances, with a reduced longitudinal emittance in order to explore the HL-LHC conditions. [...]
CERN-ACC-NOTE-2017-0017.
- 2017. - 6 p.
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2017-03-30
11:23
LHC MD 232: Longitudinal Impedance Evaluation / Esteban Muller, Juan ; Timko, Helga (CERN) ; Baudrenghien, Philippe (CERN) ; Shaposhnikova, Elena (CERN)
The aim of the MDstudies presented here was to evaluate the imaginary part of the longitudinal impedance of the LHC by means of synchrotron frequency shift measurements [...]
CERN-ACC-NOTE-2017-0016.
- 2017. - 6 p.
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2017-03-27
16:47
Observation of the Higgs Boson Decaying to WW to leptons and neutrinos / Ilic, Nikolina
The search for the Higgs boson produced through gluon fusion and vector boson fusion and decaying to WW bosons is performed [...]
CERN-THESIS-2014-388 - Toronto : Toronto U., 2015-03-01.

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2017-03-24
15:12
Documentation relating to the PS Booster : 1966 to 1976 / Innocenti, M (CERN)
CERN-PS-BR-76-13.
- 1966. - 10 p.
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