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CERN Document Server Znaleziono 8 rekordów  Szukanie trwało 0.64 sekund. 
1.
Matching Studies Between the CERN PSB and PS Using Turn-by-Turn Beam Profile Acquisitions with a Residual Beam Gas Ionisation Monitor / Fraser, Matthew (CERN) ; Coly, Marcel (CERN) ; Guerrero, Ana (CERN) ; Huschauer, Alexander (CERN) ; Jensen, Steen (CERN) ; Levasseur, Swann (CERN) ; Roncarolo, Federico (CERN) ; Rossi, Adriana (CERN) ; Sandberg, Hampus (CERN) ; Storey, James (CERN)
In the framework of the LHC Injectors Upgrade project, the Beam Gas Ionisation (BGI) profile monitors installed in the Proton Synchrotron (PS) were fitted with a gas injection system capable of boosting the signal rate high enough to capture single turn acquisitions immediately after injection. This contribution reports on the studies carried out during the beam commissioning of the BGI system in a turn-by-turn matching monitor mode for its eventual implementation in an optimisation framework to preserve emittance during transfer between the PS Booster and PS. [...]
2022 - 4 p. - Published in : JACoW IPAC 2022 (2022) 2161-2164 Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.2161-2164
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2.
Beam Commissioning and Optimisation in the CERN Proton Synchrotron After the Upgrade of the LHC Injectors / Huschauer, Alexander (CERN) ; Coly, Marcel (CERN) ; Cotte, Denis (CERN) ; Damerau, Heiko (CERN) ; Delrieux, Marc (CERN) ; Dumont, Jean-Charles (CERN) ; Dutheil, Yann (CERN) ; Easton, Sandy (CERN) ; Fraser, Matthew (CERN) ; Hans, Oliver (CERN) et al.
The CERN LHC injector chain underwent a major upgrade during the Long Shutdown 2 (LS2) in the framework of the LHC Injectors Upgrade (LIU) project. After 2 years of installation work, the Proton Synchrotron (PS) was restarted in 2021 with the goal to achieve pre-LS2 beam quality by the end of 2021. [...]
2022 - 4 p. - Published in : JACoW IPAC 2022 (2022) 54-57 Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.54-57
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3.
Ferro-Electric Fast Reactive Tuner Applications for SRF Cavities / Shipman, Nicholas C (CERN) ; Ben-Zvi, Ilan (BNL, NSLS) ; Burt, Graeme (Cockcroft Inst. Accel. Sci. Tech.) ; Castilla, Alejandro (Cockcroft Inst. Accel. Sci. Tech. ; CERN) ; Coly, Marcel R (CERN) ; Gerigk, Frank (CERN) ; Jing, Chunguang J (Euclid Techlabs, Solon) ; Kanareykin, Alexei (Euclid Techlabs, Solon) ; Macpherson, Alick (CERN) ; Stapley, Niall (CERN) et al.
A Ferro-Electric fast Reactive Tuner (FE-FRT) is a novel type of RF cavity tuner containing a low loss ferroelectric material. FE-FRTs have no moving parts and allow cavity frequencies to be changed extremely quickly (on the timescale of 100s of ns or less). [...]
Geneva : JACoW, 2021 - 6 p. - Published in : JACoW IPAC 2021 (2021) 1305-1310 Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.1305-1310
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4.
A Ferroelectric Fast Reactive Tuner (FE-FRT) to Combat Microphonics / Shipman, Nicholas (CERN) ; Bastard, Jeremy (CERN) ; Ben-Zvi, Ilan (Brookhaven) ; Burt, Graeme (Lancaster U.) ; Castilla, Alejandro (Lancaster U.) ; Coly, Marcel (CERN) ; Gerigk, Frank (CERN) ; Jing, Chunguang (Euclid Techlabs, Solon) ; Kanareykin, Alexei (Euclid Techlabs, Solon) ; Macpherson, Alick (CERN) et al.
A prototype Fast Reactive Tuner (FRT) for superconducting cavities has been developed, which allows the frequency to be controlled by application of a potential difference across a newly developed ultra-low loss ferro-electric material residing within the tuner. The tuner operates at room temperature, outside of the cryostat and coupled to the cavity via an antenna and co-axial cable. [...]
2020 - 6 p. - Published in : 10.18429/JACoW-ERL2019-TUCOZBS02 Fulltext: PDF;
In : 63rd ICFA Advanced Beam Dynamics Workshop on Energy Recovery Linacs, Berlin, Germany, 15 - 20 Sep 2019, pp.TUCOZBS02
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5.
CERN’s SRF Test Stand for Cavity Performance Measurements / Stapley, Niall (CERN) ; Bastard, Jeremy (CERN) ; Ben-Zvi, Ilan (Brookhaven Natl. Lab.) ; Castilla, Alejandro (Lancaster U.) ; Coly, Marcel (CERN) ; Hernandez-Chahin, K (Guanajuato U.) ; Ivanov, Anton (CERN) ; Macpherson, Alick (CERN) ; Shipman, Nicholas (CERN) ; Turaj, Katarzyna (CERN) et al.
Recent deployment of a digital LLRF system within the cavity testing framework of CERN’s vertical test cryostats has permitted a full revamp of cavity performance validation. With both full continuous and pulse mode operation, steady state a transient RF behaviour can be effectively probed. [...]
2019 - 5 p. - Published in : 10.18429/JACoW-SRF2019-THP078 Fulltext: PDF;
In : 19th International Conference on RF Superconductivity, Dresden, Germany, 30 Jun - 05 Jul 2019, pp.1084-1088
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6.
A Ferroelectric Fast Reactive Tuner for Superconducting Cavities / Shipman, Nicholas (CERN) ; Bastard, Jeremy (CERN) ; Ben-Zvi, Ilan (Brookhaven Natl. Lab.) ; Burt, Graeme (Lancaster U.) ; Castilla, Alejandro (Lancaster U.) ; Coly, Marcel (CERN) ; Gerigk, Frank (CERN) ; Jing, Chunguang (Euclid Techlabs, Solon) ; Kanareykin, Alexei (Euclid Techlabs, Solon) ; Kazakov, Sergey (Fermilab) et al.
A prototype FerroElectric Fast Reactive Tuner (FE-FRT) for superconducting cavities has been developed, which allows the frequency to be controlled by application of a potential difference across a ferroelectric residing within the tuner. This technique has now become practically feasible due to the recent development of a new extremely low loss ferroelectric material. [...]
SRF2019.- 2019 - 8 p. - Published in : 10.18429/JACoW-SRF2019-WETEB7 Fulltext: PDF;
In : 19th International Conference on RF Superconductivity, Dresden, Germany, 30 Jun - 05 Jul 2019, pp.783-790
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7.
Approaching the High-Intensity Frontier Using the Multi-Turn Extraction at the CERN Proton Synchrotron / Huschauer, Alexander (CERN) ; Bartosik, Hannes (CERN) ; Cettour-Cave, Stephane (CERN) ; Coly, Marcel (CERN) ; Cotte, Denis (CERN) ; Damerau, Heiko (CERN) ; Di Giovanni, Gian Piero (CERN) ; Gilardoni, Simone (CERN) ; Giovannozzi, Massimo (CERN) ; Kain, Verena (CERN) et al.
Complementary to the physics research at the LHC, sev- eral fixed target facilities receive beams from the LHC in- jector complex. To serve the fixed target physics program at the Super Proton Synchrotron, high-intensity proton beams from the Proton Synchrotron are extracted using the Multi- Turn Extraction technique based on trapping parts of the beam in stable resonance islands. [...]
2018 - 6 p. - Published in : 10.18429/JACoW-HB2018-WEA1WA02 Fulltext: PDF;
In : 61st ICFA Advanced Beam Dynamics Workshop on High-Intensity and High-Brightness Hadron Beams, Daejeon, Korea, 17 - 22 Jun 2018, pp.WEA1WA02
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8.
A&T Sector Note on the PS transverse feedback / Coly, Marcel (CERN) ; Cotte, Denis Gerard (CERN) ; Blas, Alfred (CERN) ; Sterbini, Guido (CERN)
In a particle accelerator, several contributions can degrade the beam quality and particularly the beam transverse emittance. [...]
CERN-ACC-Note-2017-0054. - 2017.
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