CERN Accelerating science

SPS and CNGS

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2015-01-21
09:15
Development of high $\beta^*$-optics for ALICE / Hermes, Pascal Dominik
This thesis describes a feasibility study for a special optical configuration in Insertion Region 2 (IR2) of the Large Hadron Collider (LHC), which is host of the ALICE detector [...]
CERN-THESIS-2013-370 - 114 p.

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2015-01-21
09:10
A charge-pump 60kV modulator for the ISOLDE target extraction voltage / Barlow, R A (CERN, Switzerland) ; Bleus, B (CERN, Switzerland) ; Fowler, A (CERN, Switzerland) ; Gaudillet, H (CERN, Switzerland) ; Gharsa, T (CERN, Switzerland) ; Schipper, J (CERN, Switzerland)
The ISOLDE facility at CERN provides radioactive ion beams to a number of experimental stations. [...]
CERN-ACC-2015-0013.
- 2015. - 6 p.
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2015-01-20
09:10
The stripping foil test stand in the Linac4 transfer line / Weterings, W (CERN) ; Bracco, C (CERN) ; Noulibos, R (CERN) ; Sillanoli, Y (CERN) ; van Trappen, P (CERN)
The 160 MeV H− beam from the Linac4 (L4) linear accelerator at CERN will be injected into the proton synchrotron booster (PSB) with a new H− charge-exchange injection system. It will include a stripping foil, to convert H− into protons by stripping off the electrons. [...]
2015 - Published in : J. Radioanal. Nucl. Chem. xx (2015) xx Fulltext: PDF;

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2015-01-16
10:40
Status of the FCC-ee Interaction Region Design / Martin, R (CERN and Humboldt University) ; Tomas, R (CERN) ; Medina, L (Universidad de Guanajuato, Mexico)
The FCC-ee project is a high-luminosity circular electron-positron collider envisioned to operate at center-of-mass energies from90 to 350GeV, allowing high-precision measurements of the properties of the Z, W and Higgs boson as well as the top quark. It is considered to be a predecessor of a new 100 TeV proton-proton collider hosted in the same 80 to 100 km tunnel in the Geneva area. [...]
CERN-ACC--2015-001--2015-001.- Geneva : CERN, 2015 Access to fulltext document: PDF;
In : 55th ICFA Advanced Beam Dynamics Workshop on High Luminosity Circular e+e- Colliders – Higgs Factory, Beijing, China, 09 - 12 Oct 2014

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2015-01-07
10:34
The Electrical Resistance of Rutherford-Type Superconducting Cable Splices / Heck, C (CERN, Switzerland) ; Scheuerlein, Chr (CERN, Switzerland) ; Fleiter, J (CERN, Switzerland) ; Bottura, L (CERN, Switzerland)
The electrical resistance of Large Hadron Collider main busbar cable lap splices produced by soft soldering has been measured with two independent methods as a function of intercable contact area and for splices made of cables with various defects. For defect-free lap splices, the resistance increases from 0.3 to 10 nΩ (at 4.3 K in self-field) when reducing the cable overlap length from 120 to 3 mm, as expected assuming that the resistance is inversely proportional to the intercable contact area. [...]
CERN-ACC-2015-0003.- Geneva : CERN, 2015 - 5 p. Fulltext: PDF;
In : Applied Superconductivity Conference 2014, Charlotte, NC, USA, 10 - 15 Aug 2014, pp.ASC 2014

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2014-12-19
10:50
Multipactor Mitigation in Coaxial Lines by Means of Permanent Magnets / Gonzalez-Iglesias, D ; Perez, A M ; Anza, S ; Vague, J ; Gimeno, B ; Boria, V E ; Raboso, D ; Vicente, C ; Gil, J ; Caspers, F et al.
The main aim of this paper is the analysis of the feasibility of employing permanent magnets for the multipactor mitigation in a coaxial waveguide. First, the study of a coaxial line immersed in a uniform axial magnetic field shows that multipactor can be suppressed at any RF frequency if the external magnetic field is strong enough. [...]
CERN-ACC-2014-0355.- Geneva : CERN, 2014 - 8 p. - Published in : IEEE Trans. Magn. 61 (2014) "1-8" Fulltext: PDF;

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2014-12-17
11:33
Efficient Parametric Identification Method for High Voltage Pulse Transformers / Aguglia, D (CERN, Switzerland) ; Candolfi, S (LEEPCI Lab., Quebec, Canada) ; Viarouge, P (LEEPCI Lab., Quebec, Canada) ; Cros, J (LEEPCI Lab., Quebec, Canada)
This paper presents a new identification method for a pulse transformer equivalent circuit. It is based on an analytical approximation of the frequency-domain impedance data derived from a no-load test with open-circuited secondary winding and only requires measurements of primary current and voltage without phase data. [...]
CERN-ACC-2014-0347.- Geneva : CERN, 2014 - 7 p. Fulltext: PDF;
In : IEEE Pulsed Power and Plasma Science Conference, San Francisco, CA, USA, 16 - 21 Jun 2013, pp.IEEE

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2014-12-16
16:17
How to run ions in the future? / Küchler, D (CERN) ; Manglunki, D (CERN) ; Scrivens, R (CERN)
In the light of different running scenarios potential source improvements will be discussed (e.g. one month every year versus two month every other year and impact of the different running options [e.g. [...]
Geneva : CERN, 2014 Published version from CERN: PDF;
In : RLIUP: Review of LHC and Injector Upgrade Plans, Centre de Convention, Archamps, France, 29 - 31 Oct 2013, pp.163-165

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2014-12-16
16:17
How to reach the required availability in the HL-LHC era / Lamont, M (CERN)
The HL-LHC has ambitious integrated luminosity goals in the region of 250 fb$^{-1}$ per year. This level of performance will required excellent machine availability. [...]
Geneva : CERN, 2014 Published version from CERN: PDF;
In : RLIUP: Review of LHC and Injector Upgrade Plans, Centre de Convention, Archamps, France, 29 - 31 Oct 2013, pp.139-144

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2014-12-16
16:17
LIU: exploring alternative ideas / Damerau, H (CERN) ; Bartosik, H (CERN) ; Garoby, R (CERN) ; Gilardoni, S (CERN) ; Hancock, S (CERN) ; Mikulec, B (CERN) ; Papaphilippou, Y (CERN) ; Rumolo, G (CERN) ; Shaposhnikova, E (CERN) ; Tomas, R (CERN)
The baseline upgrade scenarios for the injector complex cover the connection of Linac4 to the PSB, the increase of the PSB-PS transfer energy from 1 . 4 GeV to 2 GeV and the major SPS RF upgrade during LS2. [...]
Geneva : CERN, 2014 Published version from CERN: PDF;
In : RLIUP: Review of LHC and Injector Upgrade Plans, Centre de Convention, Archamps, France, 29 - 31 Oct 2013, pp.127-137

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