CERN Accelerating science

PS Complex

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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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2014-12-17
09:34
Design of a System of High Voltage Pulsed Power Converters for CERN’s Linac4 H− Ion Source / Aguglia, D (CERN, Switzerland)
This paper presents the complete design and experimental validations of the full scale prototype of a system of three new high voltage pulsed power converters for the CERN Linac4 H− source. The system requires three pulsed voltages (50kV, 40kV and 25kV to ground) at 2Hz repetition rate, for a 700µs of usable flat-top. [...]
CERN-ACC-2014-0345.- 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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2014-12-17
09:31
SPL-based Proton Driver for a nu-Factory at CERN / Benedetto, E (CERN) ; Aiba, M (CERN) ; Garoby, R (CERN) ; Meddahi, M (CERN)
The conceptual design and feasibility studies for a nu-Factory Proton Driver based on the CERN Superconducting Proton Linac (SPL) have been com- pleted. In the proposed scenario, the 4 MW proton beam (H- beam) is acceler- ated with the upgraded High Power (HP)-SPL to 5 GeV, stored in an accumu- lator ring and Þnally transported to a compressor ring, where bunch rotation takes place, in order to achieve the speciÞc time structure. [...]
Geneva : CERN, 2010 - 4. Fulltext: PDF;
In : European Strategy for Future Neutrino Physics Workshop, CERN, Geneva, Switzerland, 1 - 3 Oct 2009, pp.271-273

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2014-12-16
16:52
Status and Operation of the Linac4 Ion Source Prototypes / Lettry, J (CERN, Switzerland) ; Aguglia, D (CERN, Switzerland) ; Andersson, P (CERN, Switzerland) ; Bertolo, S (CERN, Switzerland) ; Butterworth, A (CERN, Switzerland) ; Coutron, Y (CERN, Switzerland) ; Dallocchio, A (CERN, Switzerland) ; Chaudet, E (CERN, Switzerland) ; Gil-Flores, J (CERN, Switzerland) ; Guida, R (CERN, Switzerland) et al.
CERN’s Linac4 45 kV H- ion sources prototypes are installed at a dedicated ion source test stand and in the Linac4 tunnel. The operation of the pulsed hydrogen injection, RF sustained plasma and pulsed high voltages are described. [...]
CERN-ACC-2014-0342.- Geneva : CERN, 2014 - 4 p. Fulltext: PDF;
In : 15th International Conference on Ion Sources, Chiba, Japan, 9 - 13 Sep 2013, pp.Ion Sources

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2014-12-16
16:32
Status of the Superconducting Proton Linac (SPL) Cryo-Module / Parma, V (CERN, Switzerland) ; Bonomi, R (CERN, Switzerland) ; Capatina, O (CERN, Switzerland) ; Chambrillon, J (CERN, Switzerland) ; Montesinos, E (CERN, Switzerland) ; Schirm, K (CERN, Switzerland) ; Vande Craen, A (CERN, Switzerland) ; Vandoni, G (CERN, Switzerland) ; Van Weelderen, R (CERN, Switzerland)
The Superconducting Proton Linac (SPL) is an R&D; effort conducted by CERN in partnership with other international laboratories, aimed at developing key technologies for the construction of a multi-megawatt proton linac based on state-of-the-art SRF technology. Such an accelerator could serve as a driver in new physics facilities for neutrinos and/or radioactive ion beams [1]. [...]
CERN-ACC-2014-0341.- Geneva : CERN, 2014 - 5 p. Fulltext: PDF;
In : 16th International Conference on RF Superconductivity, Paris, France, 23 - 27 Sep 2013, pp.SRF

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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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2014-12-16
16:17
Can we ever reach the HL-LHC requirements with the injectors? / Bartosik, H (CERN) ; Argyropoulos, T (CERN) ; Goddard, B (CERN) ; Iadarola, G (CERN) ; Papaphilippou (CERN) ; Rumolo, G ; Shaposhnikova, E (CERN)
The present intensity and brightness limitations of the LHC injector synchrotrons for 25 ns beams are space charge, beam loading, instabilities in the transverse and longitudinal planes and electron cloud effects. This paper reviews how these performance limitations are expected to change after implementing the mitigation measures foreseen within the Upgrade Scenario 2. [...]
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.95-104

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