CERN Accelerating science

All CERN Accelerators documents

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2018-02-16
06:53
Space charge driven beam loss for cooled beams and mitigation measures in the CERN Low Energy Ion Ring / Bartosik, Hannes (CERN) ; Hancock, Steven (CERN) ; Huschauer, Alexander (CERN) ; Kain, Verena (CERN)
The performance of the CERN Low Energy Ion Ring (LEIR) with electron cooled lead ion beams is presently limited by losses, which occur during RF capture and the first part of acceleration. Extensive experimental studies performed in 2015 indicate that the losses are caused by the interplay of betatron resonances and the direct space charge detuning, which is significantly enhanced during bunching. [...]
2016 - 6 p. - Published in : 10.18429/JACoW-HB2016-TUAM5X01 Fulltext: PDF;
In : 57th ICFA Advanced Beam Dynamics Workshop on High-Intensity and High-Brightness Hadron Beams, Malmö, Sweden, 3 - 8 Jul 2016, pp.TUAM5X01

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2018-02-16
06:53
On the impact of non-symplecticity of space charge solvers / Titze, Malte (CERN)
To guarantee long-term reliability in the predictions of a numerical integrator, it is a well-known requirement that the underlying map has to be symplectic. It is therefore important to examine in detail the impact on emittance growth and noise generation in case this condition is violated. [...]
2016 - 4 p. - Published in : 10.18429/JACoW-HB2016-MOPR029 Fulltext: PDF;
In : 57th ICFA Advanced Beam Dynamics Workshop on High-Intensity and High-Brightness Hadron Beams, Malmö, Sweden, 3 - 8 Jul 2016, pp.MOPR029

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2018-02-16
06:53
Overview of the ESSnuSB accumulator ring / Olvegård, Maja (Uppsala U.) ; Benedetto, Elena (CERN) ; Cieslak-Kowalska, Magdalena (CERN) ; Ekelöf, Tord (Uppsala U.) ; Martini, Michel (CERN) ; Schönauer, Horst (CERN) ; Wildner, Elena (CERN)
The European Spallation Source (ESS) is a research center based on the world’s most powerful proton driver, 2.0 GeV, 5 MW on target, currently under construction in Lund. With an increased pulse frequency, the ESS linac could deliver additional beam pulses to a neutrino target, thus giving an excellent opportunity to produce a high-performance ESS neutrino Super-Beam (ESSnuSB). [...]
2016 - 5 p. - Published in : 10.18429/JACoW-HB2016-MOPR021 Fulltext: PDF;
In : 57th ICFA Advanced Beam Dynamics Workshop on High-Intensity and High-Brightness Hadron Beams, Malmö, Sweden, 3 - 8 Jul 2016, pp.MOPR021

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2018-02-16
06:53
Momentum acceptance optimization in FCC-ee lattice (CERN) / Bogomyagkov, Anton (Novosibirsk, IYF) ; Levichev, Evgeny (Novosibirsk, IYF)
The part of the ongoing study of the future circular collider (FCC) is an electron positron machine with center of mass energy from 90 to 350 GeV. Crab waist collision scheme and small (1 mm) vertical beta function at the interaction point (IP) provide superior luminosity. [...]
IPAC-2016-THPOR019.- 2016 - 4 p. - Published in : 10.18429/JACoW-IPAC2016-THPOR019 Fulltext: PDF;
In : 7th International Particle Accelerator Conference, Busan, Korea, 8 - 13 May 2016, pp.THPOR019

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2018-02-16
06:53
Simulation of the FCC-hh collimation system / Molson, James (Orsay, LAL) ; Bambade, Philip (Orsay, LAL) ; Chancé, Sophie (Orsay, LAL) ; Faus-Golfe, Angeles (Orsay, LAL ; Valencia U., IFIC)
The proposed CERN FCC-hh proton-proton collider will operate at unprecedented per-particle (50 TeV) and total stored beam energies (8.4 GJ). These high energies create the requirement for an efficient collimation system in order to protect the accelerator components and experiments. [...]
2016 - 3 p. - Published in : 10.18429/JACoW-IPAC2016-TUPMR054 Fulltext: PDF;
In : 7th International Particle Accelerator Conference, Busan, Korea, 8 - 13 May 2016, pp.TUPMR054

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2018-02-15
15:50
MD1271: Effect of low frequency noise on the evolution of the emittance and halo population / Fitterer, Miriam (Fermi National Accelerator Lab. (US)) ; Stancari, Giulio (Fermi National Accelerator Lab. (US)) ; Valishev, Alexander (Fermi National Accelerator Lab. (US)) ; Bruce, Roderik (CERN) ; Hofle, Wolfgang (CERN) ; Hostettler, Michi (Universitaet Bern (CH)) ; Papadopoulou, Parthena Stefania (CERN) ; Papotti, Giulia (CERN) ; Papaphilippou, Yannis (CERN) ; Pellegrini, Dario (CERN) et al.
For the High Luminosity upgrade the β* in IR1 and IR5 will be further reduced compared to the current LHC [...]
CERN-ACC-NOTE-2018-0006.
- 2018. - 40 p.
Full text

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2018-02-15
14:39
MD#1826: Measurement of Quench Heater vertical kick / Valette, Matthieu (CERN) ; Wollmann, Daniel (CERN) ; Lindstrom, Bjorn Hans Filip (Uppsala University (SE)) ; Bortot, Lorenzo (CERN) ; Fernandez Navarro, Alejandro (CERN) ; Schmidt, Rudiger (Technische Universitaet Darmstadt (DE)) ; Verweij, Arjan (CERN)
Following the observation of vertical orbit oscillations of the LHC beam between the detection of a (beam induced) quench of an LHC main dipole and the beam dump, a study was started to verify that the orbit distortions are caused by the firing of the quench heaters (QH). [...]
CERN-ACC-2018-0007.
- 2018. - 8 p.
Full text

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2018-02-15
11:25
Specification for correction magnets for the CERN 28 GeV proton synchrotron experimental beam transport / Bossard, P.
CERN-MPS-SI-Int-MAE-70-011.
- 1970. - 21 p.

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2018-02-15
11:21
Système mécanique modulaire standard pour la construction électronique / Division MPS et SI
CERN-MPS-SI-Int-DL-70-009.
- 1970. - 24 p.

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2018-02-15
11:16
The improved CPS as injector for the 300 GeV synchrotron : A first evaluation / Barbalat, O. ; Hardt, W. ; Reich, K.H.
CERN-MPS-SI-Int-DL-70-008.
- 1970. - 24 p.

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