CERN Accelerating science

SPS and CNGS

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2020-03-29
18:03
Feasibility Study for NITE SiC/SiC as the Target Material for Pions/Muons Production at High-Power Proton Accelerator Facilities / Makimura, Shunsuke (J-PARC) ; Park, Joon-Soo (Muroran Inst. Tech.) ; Sato, Akira (Osaka U. (main)) ; Matoba, Shiro (J-PARC) ; Kawamura, Naritoshi (J-PARC) ; Yamazaki, Takayuki (J-PARC) ; Ninomiya, Kazuhiko (Osaka U. (main)) ; Tomono, Dai (Osaka U., Res. Ctr. Nucl. Phys.) ; Nakazato, Naofumi (Muroran Inst. Tech.) ; Calviani, Marco (CERN) et al.
The feasibility study for Nano-Infiltration and Transient Eutectic phase process SiC/SiC (NITE SiC/SiC)NITE SiC/SiC as a potential novel target material for pions/muons production at high-power proton accelerators facilities is in progress. Compared with graphite that is the principal target material for pions/muons production, higher transport efficiency and higher oxidation resistance can be expected. [...]
2020 - 6 p. - Published in : JPS Conf. Proc. 28 (2020) 031005 Fulltext: PDF;
In : 14th International Workshop on Spallation Materials Technology, Fukushima, Japan, 11 - 17 Nov 2018, pp.031005

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2020-03-25
04:07
Atomic physics studies at the Gamma Factory at CERN / Budker, Dmitry (Helmholtz Inst., Mainz ; UC, Berkeley) ; López-Urrutia, José R. Crespo (Heidelberg, Max Planck Inst.) ; Derevianko, Andrei (Nevada U., Reno) ; Flambaum, Victor V. (New South Wales U. ; Helmholtz Inst., Mainz ; Massey U., NZIAS) ; Krasny, Mieczyslaw Witold (Paris U., VI-VII ; CERN) ; Petrenko, Alexey (Novosibirsk, IYF ; CERN) ; Pustelny, Szymon (Jagiellonian U.) ; Surzhykov, Andrey (Braunschweig, Phys. Tech. Bund. ; Braunschweig Tech. U.) ; Yerokhin, Vladimir A. (Braunschweig, Phys. Tech. Bund. ; St. Petersburg Polytechnic Inst.) ; Zolotorev, Max (LBL, Berkeley)
The Gamma Factory initiative proposes to develop novel research tools at CERN by producing, accelerating and storing highly relativistic, partially stripped ion beams in the SPS and LHC storage rings. [...]
arXiv:2003.03855.
- 15 p.
Fulltext

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2020-03-20
04:35
Beam blowup due to synchro-beta resonance with/without beam-beam effects / Oide, Katsunobu (KEK, Tsukuba) ; El Khechen, Dima (CERN)
A blowup of vertical emittance has been observed in particle tracking simulations with beam-beam and lattice misalignments. It was somewhat unexpected, since estimation without lattice errors did not predict such a blowup unless a residual vertical dispersion at the interaction point (IP) is larger than a certain amount. [...]
arXiv:1904.10188.- JACOW, 2019-04-21 - 5 p. - Published in : 10.18429/JACoW-eeFACT2018-WEXBA03 Fulltext: 3ab7c6d1a1e3361cc842add8f23a2c98 - PDF; 25a011a29f76fbb67225e0fa10890552 - PDF; fulltext1730891 - PDF; 1904.10188 - PDF;
In : 62nd ICFA Advanced Beam Dynamics Workshop on High Luminosity Circular e+e− Colliders, Hong Kong, China, 24 - 27 Sep 2018, pp.WEXBA03

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2020-03-19
07:03
FCC-ee Operation Model, Availability & Performance / Zimmermann, Frank (CERN) ; Apollonio, Andrea (CERN) ; Benedikt, Michael (CERN) ; Brunner, Olivier (CERN) ; Funakoshi, Yoshihiro (KEK, Tsukuba) ; Milardi, Catia (Frascati) ; Myers, Stephen (CERN) ; Niemi, Arto (Tampere U. of Tech.) ; Oide, Katsunobu (KEK, Tsukuba) ; Qin, Qing (Beijing, Inst. High Energy Phys.) et al.
This document discusses the machine parameters and expected luminosity performance for the proposed future circular lepton collider FCC-ee. Particular emphasis is put on availability, physics run time, and efficiency. [...]
JACOW, 2019 - 7 p. - Published in : 10.18429/JACoW-eeFACT2018-WEPAB03 Fulltext: d6c8f5321207eff74262e996e195834c - PDF; wepab03 - PDF;
In : 62nd ICFA Advanced Beam Dynamics Workshop on High Luminosity Circular e+e− Colliders, Hong Kong, China, 24 - 27 Sep 2018, pp.WEPAB03

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2020-03-19
07:03
Overall Injection Strategy for FCC-ee / Ogur, Salim (CERN) ; Aiba, Masamitsu (PSI, Villigen) ; Antoniou, Fanouria (CERN) ; Barnyakov, Alexey (Novosibirsk, IYF) ; Chaikovska, Iryna (Orsay, LAL) ; Charles, Tessa (CERN) ; Chehab, Robert (Orsay, LAL) ; Etisken, Ozgur (Ankara U.) ; Furukawa, Kazuro (KEK, Tsukuba) ; Härer, Bastian (CERN) et al.
The Future Circular electron-positron Collider (FCC-ee) requires fast cycling injectors with very low extraction emittances to provide and maintain extreme luminosities at center of mass energy varying between 91.2-385 GeV in the collider. For this reason, the whole injector complex table is prepared by putting into consideration the minimum fill time from scratch, bootstrapping, transmission efficiency as well as store time of the beams in synchrotrons to approach equilibrium emittances. [...]
JACOW, 2019 - 8 p. - Published in : 10.18429/JACoW-eeFACT2018-TUPAB03 Published fulltext: PDF;
In : 62nd ICFA Advanced Beam Dynamics Workshop on High Luminosity Circular e+e− Colliders, Hong Kong, China, 24 - 27 Sep 2018, pp.TUPAB03

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2020-03-14
14:28
New developments for ALICE MasterClasses and the new Particle Therapy MasterClass / Graczykowski, Lukasz Kamil (Warsaw University of Technology (PL)) ; Nowakowski, Piotr (Warsaw University of Technology (PL)) ; Foka, Panagiota (GSI Helmholtzzentrum für Schwerionenforschung)
International MasterClasses (IMC), an outreach activity of the International Particle Physics Outreach Group (IPPOG), has been bringing cutting-edge particle physics research to schoolchildren for over 15 years now. All four LHC experiments participate in the event, including ALICE, the experiment optimised for the study of heavy-ion collisions. [...]
IPPOG-CONF-PROC-003.- Geneva : CERN, 2020 - Published in : International Particle Physics Outreach Group
- Published in : International Particle Physics Masterclasses ALICE PTMC v2: PDF;

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2020-03-10
09:08
Design of LHC Crab Cavities Based on DQW Cryomodule Test Experience / Verdú-Andrés, Silvia (Brookhaven Natl. Lab.) ; Calaga, Rama (CERN) ; Cano-Pleite, Eduardo (CERN) ; Leuxe, Raphael (CERN) ; Mitchell, James (Lancaster U. ; CERN)
A cryomodule with two Double-Quarter Wave (DQW) cavities was designed, built and tested with the SPS beam in 2018. Each cavity was equipped with an rf pickup antenna to monitor field amplitude and phase. [...]
SRF2019.- 2019 - 4 p. - Published in : 10.18429/JACoW-SRF2019-THP035 Fulltext: PDF;
In : 19th International Conference on RF Superconductivity, Dresden, Germany, 30 Jun - 05 Jul 2019, pp.927-930

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2020-03-10
09:08
Status of the HL-LHC Crab Cavity Tuner / Artoos, Kurt (CERN) ; Arnaudon, Luca (CERN) ; Calaga, Rama (CERN) ; Cano-Pleite, Eduardo (CERN) ; Capatina, Ofelia (CERN) ; Capelli, Teddy (CERN) ; Cartaxo dos Santos, Duarte (CERN) ; Garlasché, Marco (CERN) ; Glenat, David (CERN) ; Krawczyk, Artur (Cracow, INP ; CERN) et al.
The resonance frequency of the HL-LHC Double Quarter Wave (DQW) and Radio Frequency Dipole (RFD) crab cavities is set to the operating frequency of 400.79 MHz by deforming the cavities. For both types of cavities, the tuning principle foresees a symmetric mechanical deformation of parts of the cavities in vertical direction, with the tuner motor placed outside on top of the vacuum vessel. [...]
SRF2019.- 2019 - 6 p. - Published in : 10.18429/JACoW-SRF2019-TUP081 Fulltext: PDF;
In : 19th International Conference on RF Superconductivity, Dresden, Germany, 30 Jun - 05 Jul 2019, pp.648-653

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2020-03-10
09:08
Design of Crab Cavity Cryomodule for HL-LHC / Capelli, Teddy (CERN) ; Artoos, Kurt (CERN) ; Boucherie, Antoine (CERN) ; Brodzinski, Krzysztof (CERN) ; Calaga, Rama (CERN) ; Calvo, Sebastien (CERN) ; Cano-Pleite, Eduardo (CERN) ; Capatina, Ofelia (CERN) ; Carra, Federico (CERN) ; Dassa, Luca (CERN) et al.
Crab cavities are a key element to achieve the HL-LHC performance goals. There are two types of cavities Double Quarter Wave (DQW) for vertical crabbing, and Radiofrequency Dipole (RFD) for horizontal crabbing. [...]
SRF2019.- 2019 - 6 p. - Published in : 10.18429/JACoW-SRF2019-MOP099 Fulltext: PDF;
In : 19th International Conference on RF Superconductivity, Dresden, Germany, 30 Jun - 05 Jul 2019, pp.320-325

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2020-03-10
09:08
An SRF Test Stand in High Intensity and High Energy Proton Beams / Vandoni, Giovanna (CERN) ; Artoos, Kurt (CERN) ; Baglin, Vincent (CERN) ; Brodzinski, Krzysztof (CERN) ; Calaga, Rama (CERN) ; Capatina, Ofelia (CERN) ; Claudet, Serge (CERN) ; Delprat, Laurent (CERN) ; Mehanneche, Scharif (CERN) ; Montesinos, Eric (CERN) et al.
In the framework of HL-LHC, a new infrastructure was installed in 2018, to test SRF structures in the proton beams of the SPS. Scope of the test stand is to study the operational performance of crab cavities for HL-LHC – more generally, SRF cavities – through a wide range of proton beam parameters up to high energy and current, under safe conditions for equipment and personnel. [...]
2019 - 5 p. - Published in : 10.18429/JACoW-SRF2019-THP106 Fulltext: PDF;
In : 19th International Conference on RF Superconductivity, Dresden, Germany, 30 Jun - 05 Jul 2019, pp.1189-1193

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