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5.
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Report of the Study Group on the New Multi-Turn Extraction in the PS Machine
/ Berrig, O E ; Borburgh, J ; Burnet, Jean Paul ; Cappi, R (CERN) ; Giovannozzi, Massimo ; Kalbreier, Willi ; Martini, M ; Müller, A S ; Métral, Elias ; Metzmacher, K D et al.
Since the year 2001 considerable efforts were devoted to the study of a possible replacement of the Continuous Transfer (CT) extraction mode from the PS to the SPS. [...]
CERN-AB-2004-003-ABP.
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2004. - 35 p.
Access to fulltext document - Access to fulltext document - Access to fulltext document - CERN library copies
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6.
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SPS New Timing Tests
/ Jacquet, D ; Paris, V ; Jensen, L ; Wehrle, U ; Verhagen, H ; Partinod, P ; Semanaz, P ; Jonker, M ; Lewis, J ; Bau, J C et al.
The SPS master timing generator is foreseen to be replaced in 2004 by a central timing generator called CBCM, which will control the whole accelerator complex. [...]
AB-Note-2004-007-MD ; CERN-AB-Note-2004-007-MD.
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2003.
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12.
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1st LHC Project Workshop - Chamonix XIII
19 - 23 Jan 2004
- Chamonix, France
/ Poole, John (ed.) (CERN)
The workshop in 2004 was the first in the series devoted to the LHC Project and was composed of 10 half day sessions. It started with a session devoted to issues in injector chain which was followed by a session devoted to beam milestones in the period 2003-2007. [...]
Geneva : CERN, 2004 - 330 p.
CERN-AB-2004-014-ADM
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21.
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Design and Tests of a New Rest Gas Ionisation Profile Monitor Installed in the SPS as a Prototype for the LHC
/ Fischer, C ; Koopman, J ; Kramer, Daniel ; Perret, R ; Sillanoli, M
Based on the encouraging results obtained with a Rest Gas Ionization Profile Monitor of a first generation, a new monitor was designed and then installed in the SPS at the beginning of 2002. Its design fulfills all the requirements for a future installation in the LHC where four such monitors are foreseen. [...]
CERN-AB-2004-031-BDI.-
Geneva : CERN, 2004 - 9 p.
- Published in : AIP Conf. Proc. 732 (2004) 133-140
Access to fulltext document: PDF; External link: Access to fulltext document
In : 11th Beam Instrumentation Workshop, Knoxville, TN, USA, 3 - 6 May 2004, pp.133-140
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23.
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Beam Commissioning of the SPS LSS 4 Extraction and the TT40 Transfer Line
/ Goddard, B ; Collier, Paul ; Lamont, M ; Mertens, V ; Sigerud, K ; Uythoven, J ; Wenninger, J
The new fast extraction system in LSS4 of the SPS and the transfer line TT40 were commissioned with beam in late 2003. The layout and functionality of the main elements are briefly explained, including the various hardware subsystems and the control system. [...]
CERN-AB-2004-036.-
Geneva : CERN, 2004 - 4 p.
Access to fulltext document: PDF; External link: Published version from JACoW
In : 9th European Particle Accelerator Conference, Lucerne, Switzerland, 5 - 9 Jul 2004, pp.569
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25.
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Beam Induced Heating of the SPS Fast Pulsed Magnets
/ Arduini, Gianluigi ; Bohl, T (CERN) ; Caspers, Friedhelm ; Gaxiola, E H ; Kroyer, T ; Timmins, M ; Vos, L ; Uythoven, J
Fast pulsed magnets with ferrite yokes are used in CERN's SPS accelerator for beam injection, extraction and excitation for tune measurements. The impedance of the ferrite structures can provoke significant beam induced heating, especially for beams with high peak currents as for LHC operation, even beyond the Curie temperature. [...]
CERN-AB-2004-038.-
Geneva : CERN, 2004 - 4 p.
Access to fulltext document: PDF; External link: Published version from JACoW
In : 9th European Particle Accelerator Conference, Lucerne, Switzerland, 5 - 9 Jul 2004, pp.623
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27.
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A Retrofit Technique for Kicker Beam-Coupling Impedance Reduction
/ Caspers, Friedhelm ; Gaxiola, E ; Kroyer, T ; Timmins, M ; Uythoven, J ; Kurennoy, S
The reduction of the impedance of operational ferrite kicker structures may be desirable in order to avoid rebuilding such a device. Often resistively coated ceramic plates or tubes are installed for this purpose but at the expense of available aperture. [...]
CERN-AB-2004-048.-
Geneva : CERN, 2004 - 4 p.
Access to fulltext document: PDF; External link: Published version from JACoW
In : 9th European Particle Accelerator Conference, Lucerne, Switzerland, 5 - 9 Jul 2004, pp.1144
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29.
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Observation of a Fast Single-Bunch Transverse Instability on Protons in the SPS
/ Arduini, Gianluigi ; Benedetto, Elena ; Burkhardt, H ; Métral, Elias ; Rumolo, Giovanni
The longitudinal impedance of the SPS has been reduced significantly by hardware modifications over the last years and the threshold for longitudinal instabilities increased accordingly. We now observe a fast transverse instability on high-intensity single bunches of low longitudinal emittance. [...]
CERN-AB-2004-055.-
Geneva : CERN, 2004 - 4 p.
Access to fulltext document: PDF; External link: Published version from JACoW
In : 9th European Particle Accelerator Conference, Lucerne, Switzerland, 5 - 9 Jul 2004, pp.1843
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30.
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Multiturn Extraction Based on Trapping in Stable Islands at CERN PS: Recent Measurement Advances
/ Cappi, R ; Gilardoni, S S ; Giovannozzi, Massimo ; Martini, M ; Métral, Elias ; Müller, A S ; Sakumi, A ; Steerenberg, R
Recently a novel approach to perform multi-turn extraction was proposed based on beam splitting in the transverse phase space by means of trapping inside stable islands. During the year 2002, preliminary measurements at the CERN Proton Synchrotron with a low-intensity, singlebunch, proton beam, confirmed the possibility of generating various beamlets starting from a single Gaussian beam. [...]
CERN-AB-2004-058.-
Geneva : CERN, 2004 - Streaming video ; 4 transparencies.
Talk Information
Access to fulltext document: PDF; External links: Published version from JACoW; Talk 07 Jul 2004
In : 9th European Particle Accelerator Conference, Lucerne, Switzerland, 5 - 9 Jul 2004, pp.173
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32.
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Study of a New Working Point for the CERN PS Booster
/ Benedikt, Michael ; Blas, A ; Carli, Christian ; Chanel, M ; Fiebiger, H ; Findlay, A ; Hanke, K ; Sanchez-Alvarez, J L ; Tan, J ; Urschütz, Peter
This paper reports on experiments with a new working point for the CERN PS Booster (PSB), performed during a dedicated machine development (MD) session following the 2003 run. [...]
AB-Note-2004-064 ; CERN-AB-Note-2004-064.
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2004.
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33.
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Intensity Dependent Emittance Transfer Studies at the CERN Proton Synchrotron
/ Métral, Elias ; Carli, Christian ; Giovannozzi, Massimo ; Martini, M ; Steerenberg, R ; Franchetti, Giuliano (GSI, Darmstadt) ; Hofmann, I ; Qiang, J ; Ryne, Robert D
An intensive study has been undertaken since the year 2002 to understand better the various high-intensity bottlenecks of the CERN Proton Synchrotron machine. One of these limitations comes from the so-called Montague resonance. [...]
CERN-AB-2004-070.-
Geneva : CERN, 2004 - 4 p.
Access to fulltext document: PDF; External link: Published version from JACoW
In : 9th European Particle Accelerator Conference, Lucerne, Switzerland, 5 - 9 Jul 2004, pp.1894
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34.
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Simulation of Transient Beam-Feedback Interaction and Application to Extraction of CNGS Beam from the SPS
/ Vogel, E ; Höfle, Wolfgang
For present and future high energy proton accelerators, such as the LHC, transverse feedback systems play an essential role in supplying the physics experiments with high intensity beams at low emittances. We developed a simulation model to study the interaction between beam and transverse feedback system in detail, bunch-by-bunch and turn-by-turn, considering the real technical implementation of the latter. [...]
CERN-AB-2004-076.-
Geneva : CERN, 2004 - 4 p.
Access to fulltext document: PDF; External link: Published version from JACoW
In : 9th European Particle Accelerator Conference, Lucerne, Switzerland, 5 - 9 Jul 2004, pp.626
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35.
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RF Amplitude Modulation to Suppress Longitudinal Coupled Bunch Instabilities in the SPS
/ Vogel, E ; Bohl, T (CERN) ; Wehrle, U
Without specific counter measures, the LHC type beam in the SPS suffers from longitudinal coupled bunch instabilities. To get rid of them, the SPS impedance has been decreased in the last years and the operation of a high frequency Landau damping system has been established. [...]
CERN-AB-2004-077.-
Geneva : CERN, 2004 - 4 p.
Access to fulltext document: PDF; External link: Published version from JACoW
In : 9th European Particle Accelerator Conference, Lucerne, Switzerland, 5 - 9 Jul 2004, pp.1924
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36.
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Electron-Cloud Build-Up Simulations and Experiments at CERN
/ Arduini, Gianluigi ; Baglin, V ; Bohl, T (CERN) ; Jenninger, B ; Jiménez, M ; Laurent, Jean Michel ; Schulte, Daniel (CERN) ; Ruggiero, F ; Zimmermann, Frank (CERN)
We benchmark the predictions of electron-cloud buildup simulations against measurements at the CERN SPS. Specifically we compare the electron flux at the wall, electron-energy spectra, heat loads and the spatial distribution of the electrons for two different bunch spacings, with variable magnetic fields, and for several chamber temperatures and associated surface conditions. [...]
CERN-AB-2004-082.-
Geneva : CERN, 2004 - 4 p.
Access to fulltext document: PDF; External link: Published version from JACoW
In : 9th European Particle Accelerator Conference, Lucerne, Switzerland, 5 - 9 Jul 2004, pp.1933
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40.
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Comparative Transverse Distribution Measurements between the New SPS Rest Gas Ionisation Monitor and the Wire Scanner Monitors
/ Fischer, C ; Dehning, Bernd (CERN) ; Koopman, J ; Kramer, Daniel ; Roncarolo, F
During the past two years, a new Ionization Profile Monitor was installed and tested in the CERN SPS. In parallel modifications were made on various wire scanner monitors. [...]
CERN-AB-2004-088.-
Geneva : CERN, 2004 - 4 p.
Access to fulltext document: PDF; External link: Published version from JACoW
In : 9th European Particle Accelerator Conference, Lucerne, Switzerland, 5 - 9 Jul 2004, pp.2478
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41.
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Multiturn extraction based on trapping in stable islands
/ Giovannozzi, Massimo ; Cappi, R ; Gilardoni, S S ; Martini, M ; Métral, Elias ; Müller, A S ; Scaramuzzi, P ; Steerenberg, R
For some applications an intermediate extraction mode between fast (one turn) and slow (several thousand turns) is needed. This is the case of the five-turn extraction used to transfer the proton beam from the CERN Proton Synchrotron (PS) to the Super Proton Synchrotron (SPS). [...]
CERN-AB-2004-095.-
Geneva : CERN, 2005 - 4 p.
- Published in : AIP Conf. Proc. 773 (2005) 296-300
Access to fulltext document: PDF; External link: Access to fulltext document
In : 33rd ICFA Advanced Beam Dynamics Workshop : High Intensity High Brightness Hadron Beams, Bensheim, Germany, 18 - 22 Oct 2004, pp.296-300
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