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1.
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Probing FCC-ee energy calibration through resonant depolarization at KARA
/ Zimmermann, Frank (CERN) ; Keintzel, Jacqueline (CERN) ; Mueller, Anke-Susanne (KIT, Karlsruhe) ; Haerer, Bastian (KIT, Karlsruhe) ; Blomley, Edmund (KIT, Karlsruhe) ; Huttel, Erhard (KIT, Karlsruhe) ; Steinmann, Johannes (KIT, Karlsruhe) ; Gethmann, Julian (KIT, Karlsruhe) ; Ruprecht, Robert (KIT, Karlsruhe) ; Pieloni, Tatiana (Ecole Polytechnique, Lausanne) et al.
The FCC-ee collider physics program requires a precise determination of the center-of-mass energy. The average energies of the two colliding beams can be measured by resonant depolarization (RDP) of polarized electron and positron bunches. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) WEPR20
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.WEPR20
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2.
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Electron beam test facilities for novel applications
/ Angal-Kalinin, Deepa (Daresbury) ; Mueller, Anke-Susanne (KIT, Karlsruhe) ; Burkart, Florian (DESY) ; Jones, James (Daresbury) ; Schuh, Marcel (KIT, Karlsruhe) ; Pompili, Riccardo (INFN, Milan) ; Corsini, Roberto (CERN) ; Pacey, Thomas (Daresbury) ; Li, Xiangkun (DESY, Zeuthen) ; Stephan, Frank (DESY, Zeuthen)
Delivering and tailoring high brightness electron beams for a wide range of novel applications is a challenging task in single pass accelerator test facilities. This paper will review beam dynamics challenges at single pass accelerator test facilities in Europe to generate, transport and tailor low- to medium-energy high brightness electron beams for a range of novel applications..
2023 - 5 p.
- Published in : JACoW IPAC 2023 (2023) MOZG1
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.MOZG1
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3.
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Impact of 440 GeV Proton beams on Superconductors in a Cryogenic Environment
/ Will, A (CERN ; KIT, Karlsruhe, IPE) ; Bernhard, A (KIT, Karlsruhe, IPE) ; Bonura, M (Geneva U.) ; Bordini, B (CERN) ; Mentink, M (CERN) ; Mueller, A S (KIT, Karlsruhe, IPE) ; Oslandsbotn, A (CERN) ; Schmidt, R (CERN) ; Schubert, J (CERN) ; Senatore, C (CERN ; Geneva U.) et al.
The superconducting magnets used in high energy particle accelerators such as CERN’s LHC can be impacted by the circulating beam in case of specific failures. This leads to interaction of the beam particles with the magnet components, like the superconducting coils, through direct beam impact or via secondary particle showers. [...]
IOP, 2020 - 10 p.
- Published in : J. Phys.: Conf. Ser. 1559 (2020) 012060
Published fulltext: PDF;
In : 14th European Conference on Applied Superconductivity, Glasgow, United Kingdom, 1 - 5 Sep 2019, pp.012060
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4.
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Characterization of the radiation tolerance of cryogenic diodes for the High Luminosity LHC inner triplet circuit
/ Will, Andreas (KIT, Karlsruhe ; CERN) ; D'Angelo, G (CERN) ; Denz, R (CERN) ; Hagedorn, D (CERN) ; Monteuuis, A (CERN) ; Ravaioli, E (CERN) ; Rodriguez Mateos, F (CERN) ; Siemko, A (CERN) ; Stachon, K (CERN) ; Verweij, A (CERN) et al.
Cryogenic bypass diodes are part of the baseline powering layout for the circuits of the new Nb3Sn based final focus magnets of the high luminosity Large Hadron Collider. They will protect the magnets against excessive transient voltages during a nonuniform quenching process. [...]
2020 - 10 p.
- Published in : Phys. Rev. Accel. Beams 23 (2020) 053502
Fulltext from Publisher: PDF;
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5.
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Experimental Setup to Characterize the Radiation Hardness of Cryogenic Bypass Diodes for the HL-LHC Inner Triplet Circuits
/ Will, Andreas (CERN ; KIT, Karlsruhe) ; Bernhard, Axel (KIT, Karlsruhe) ; D'Angelo, Giorgio (CERN) ; Denz, Reiner (CERN) ; Favre, Mathieu (CERN) ; Hagedorn, Dietrich (CERN) ; Kirby, Glyn (CERN) ; Kistrup, Lucas (Unlisted, DK) ; Koettig, Torsten (CERN) ; Monteuuis, Arnaud (CERN) et al.
For the high luminosity upgrade of the Large Hadron Collider (LHC), it is planned to replace the existing triplet quadrupole magnets with Nb₃Sn quadrupole magnets, which provide a comparable integrated field gradient with a significantly increased aperture. These magnets will be powered through a novel superconducting link based on MgB₂ cables. [...]
2018 - 4 p.
- Published in : 10.18429/JACoW-IPAC2018-WEPMG006
Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.WEPMG006
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6.
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Search for neutral Higgs bosons decaying into four taus at LEP2
/ ALEPH Collaboration
A search for the production and non-standard decay of a Higgs boson, h, into four taus through intermediate pseudoscalars, a, is conducted on 683 pb-1 of data collected by the ALEPH experiment at centre-of-mass energies from 183 to 209 GeV. No excess of events above background is observed, and exclusion limits are placed on the combined production cross section times branching ratio, \xi^2 = \sigma(e+e- --> Zh)/\sigma_{SM}(e+e- --> Zh) x B(h --> aa)x B(a --> \tau^+\tau^-)^2. [...]
arXiv:1003.0705; CERN-PH-EP-2010-005.-
2010 - 18 p.
ALEPH Papers
- Published in : JHEP 05 (2010) 049
Fulltext: arXiv:1003.0705 - PDF; cern-ph-ep-2010-005 - PDF; Springer Open Access article: PDF; External link: Preprint
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7.
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Superconductive Damping Wigglers for the CLIC Project
/ Baumbach, T (Karlsruhe U.) ; Bernard, A (Karlsruhe U.) ; Braun, H (CERN) ; Casalbuoni, S (Karlsruhe, Forschungszentrum) ; Grau, A (Karlsruhe, Forschungszentrum) ; Hagelstein, M (Karlsruhe, Forschungszentrum) ; Korostelev, M (CERN) ; Kostka, B (Erlangen - Nuremberg U.) ; Mashkina, E (Erlangen - Nuremberg U.) ; Mueller, A-S (Karlsruhe U.) et al.
The CLIC damping ring requires wigglers with both high on-axis fields and short periods. The present design foresees a superconductive wiggler with a period length of 5 cm, a peak on-axis field of 2.5 T and a full aperture of 12 mm. [...]
CERN-AB-2007-072; CLIC-Note-726.-
Geneva : CERN, 2007 - 4 p.
Access to fulltext document: PDF;
In : 22nd Particle Accelerator Conference, Albuquerque, NM, USA, 25 - 29 Jun 2007, pp.200
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8.
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Search for neutral MSSM Higgs bosons at LEP
/ ALEPH Collaboration
The four LEP collaborations, ALEPH, DELPHI, L3 and OPAL, have searched for the neutral Higgs bosons which are predicted by the Minimal Supersymmetric Standard Model (MSSM). The data of the four collaborations are statistically combined and examined for their consistency with the background hypothesis and with a possible Higgs boson signal. [...]
hep-ex/0602042; CERN-PH-EP-2006-001; CERN-L3-307; CERN-PH-EP-2006-001.-
Geneva : CERN, 2006 - 82 p.
ALEPH Papers
- Published in : Eur. Phys. J. C 47 (2006) 547
Fulltext: arXiv:hep-ex_0602042 - PDF; phep-2006-001 - PDF; 0602042 - PDF; External link: Preprint
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