1.
|
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
|
|
2.
|
Resonant spin depolarization at the test facility KARA: overview of recent efforts
/ Blomley, Edmund (KIT, Karlsruhe) ; Müller, Anke-Susanne (KIT, Karlsruhe) ; Härer, B (KIT, Karlsruhe) ; Huttel, Erhard (KIT, Karlsruhe) ; Zimmermann, Frank (CERN) ; Keintzel, Jacqueline (CERN) ; Steinmann, Johannes (KIT, Karlsruhe) ; Gethmann, Julian (KIT, Karlsruhe) ; Ruprecht, Robert (KIT, Karlsruhe)
The Karlsruhe research accelerator KARA offers a setup to measure the beam energy with resonant spin depolarization. The depolarization is excited by the stripline kickers of the bunch-by-bunch feedback system and the resonant frequency is measured via change in Touschek lifetime. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) WEPG51
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.WEPG51
|
|
3.
|
Challenges and Status of the FCC-ee Lattice Design
/ Haerer, Bastian (CERN ; KIT, Karlsruhe, IPE) ; Holzer, Bernhard (CERN)
Following the recommendations of the European Strategy Group for High Energy Physics, CERN started the Future Circular Collider Study (FCC), a design study for possible future circular collider projects to investigate their feasibility for high energy physics research. One part of this study is FCC-ee, an e⁺/e^{−} collider with a circumference of 100 km. [...]
2015 - 5 p.
- Published in : (2015) , pp. THT4B3
Fulltext: PDF; External link: JACOW
In : 55th ICFA Advanced Beam Dynamics Workshop on High Luminosity Circular e+e- Colliders – Higgs Factory, Beijing, China, 09 - 12 Oct 2014, pp.THT4B3
|
|
4.
|
Systematic studies of the microbunching and weak instability at short bunch lengths
/ Brosi, M (KIT, Karlsruhe) ; Blomley, E (KIT, Karlsruhe) ; Boltz, T (KIT, Karlsruhe) ; Bründermann, E (KIT, Karlsruhe) ; Caselle, M (KIT, Karlsruhe) ; Gethmann, J (KIT, Karlsruhe) ; Kehrer, B (KIT, Karlsruhe) ; Papash, A.I. (KIT, Karlsruhe) ; Rota, L (KIT, Karlsruhe) ; Schönfeldt, P (KIT, Karlsruhe) et al.
At KARA, the Karlsruhe Research Accelerator of the Karlsruhe Institute of Technology synchrotron, the so-called short-bunch operation mode allows the reduction of the bunch length down to a few picoseconds. The microbunching instability resulting from the high degree of longitudinal compression leads to fluctuations in the emitted terahertz radiation. [...]
2020 - 5 p.
- Published in : 10.23732/CYRCP-2020-009.335
Fulltext: PDF;
In : ICFA mini-Workshop on Mitigation of Coherent Beam Instabilities in Particle Accelerators (MCBI 2019), Zermatt, Switzerland, 23 - 27 Sep 2019, pp.335 (CERN-2020-009)
|
|
5.
|
CERN’s beam instrumentation R&D; study for FCC-ee
/ Mazzoni, S (CERN) ; Schloegelhofer, A (CERN ; Vienna U.) ; Nosych, A A (CELLS - ALBA, LLS) ; Muller, A -S (KIT, Karlsruhe) ; Haerer, B (KIT, Karlsruhe) ; Paroli, B (Milan U.) ; Butti, D (CERN) ; Howling, E (CERN ; Oxford U.) ; Trad, G (CERN) ; Niehues, G (KIT, Karlsruhe) et al.
The Future Circular Collider (FCC) R&D; study was started in 2021 as a comprehensive feasibility analysis of CERN’s future accelerator project encompassing technical, administrative and financial aspects. As part of the study, Beam Instrumentation (BI) is a key technical infrastructure that will have to face unprecedented challenges. [...]
2023 - 4 p.
- Published in : JACoW IPAC 2023 (2023) THPL088
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.THPL088
|
|
6.
|
Non-Linear Beam Dynamics Studies of the CLIC Damping Wiggler Prototype
/ Gethmann, Julian (KIT, Karlsruhe) ; Bernhard, Axel (KIT, Karlsruhe) ; Blomley, Edmund (KIT, Karlsruhe) ; Huttel, Erhard (KIT, Karlsruhe) ; Müller, Anke-Susanne (KIT, Karlsruhe) ; Papaphilippou, Yannis (CERN) ; Papash, Alexander (KIT, Karlsruhe) ; Schedler, Manuel (KIT, Karlsruhe) ; Zisopoulos, Panagiotis (CERN) ; Zolotarev, Konstantin (Novosibirsk, IYF)
First beam dynamics studies of a damping wiggler prototype for the CLIC damping rings have been carried out at the KIT storage ring. Effects of the 2.9 T superconducting wiggler on the electron beam in the 2.5 GeV standard operation mode have been measured and compared with theoretical predictions. [...]
CERN-ACC-2017-168; CLIC-Note-1130.-
2017 - 4 p.
- Published in : 10.18429/JACoW-IPAC2017-WEPIK068
Fulltext: PDF;
In : 8th International Particle Accelerator Conference, Copenhagen, Denmark, 14 - 19 May 2017, pp.WEPIK068
|
|
7.
|
Constraints on the FCC-ee Lattice from the Compatibility with the FCC Hadron Collider
/ Haerer, Bastian (CERN ; KIT, Karlsruhe, IPE) ; Bartmann, Wolfgang (CERN) ; Benedikt, Michael (CERN) ; Holzer, Bernhard (CERN) ; Osborne, John (CERN) ; Schulte, Daniel (CERN) ; Tomás, Rogelio (CERN) ; Wenninger, Jorg (CERN) ; Zimmermann, Frank (CERN) ; Syphers, Michael (Michigan State U., NSCL) et al.
Following the recommendations of the European Strategy Group for High Energy Physics, CERN started the Future Circular Collider Study (FCC), a design study for possible future circular collider projects to investigate their feasibility for high energy physics research. The FCC Study covers three different machines with a circumference of 100 km: an electron positron collider with collision energy in the range of 91 GeV to 350 GeV (FCC-ee), a proton proton collider with a maximum energy of 100 TeV (FCC-hh) and an electron proton option (FCC-he). [...]
2015 - 4 p.
- Published in : (2015) , pp. FRT2A1
Fulltext: PDF; External link: JACOW
In : 55th ICFA Advanced Beam Dynamics Workshop on High Luminosity Circular e+e- Colliders – Higgs Factory, Beijing, China, 09 - 12 Oct 2014, pp.FRT2A1
|
|
8.
|
Beam Instrumentation Challenges for FCC-ee
/ Wendt, Manfred (CERN) ; Carideo, Emanuela (CERN) ; Härer, Bastian (KIT, Karlsruhe, IPE) ; Iriso, Ubaldo (CELLS - ALBA, LLS) ; Lefèvre, Thibaut (CERN) ; Mazzoni, Stefano (CERN) ; Mitsuhashi, Toshiyuki (Sokendai, Tsukuba) ; Müller, Anke-Susanne (KIT, Karlsruhe, IPE) ; Niehues, Gudrun (KIT, Karlsruhe, IPE) ; Reißig, Micha (KIT, Karlsruhe, IPE) et al.
For the accelerator-based future of high energy physics at the energy frontier, CERN started to investigate a 92 km circumference Future Circular Collider (FCC), as e⁺/e⁻ collider the FCC-ee will operate at beam energies up to 182.5 GeV. Beside the machine operational aspects, beam instrumentation will play a key role in verifying and optimizing the machine to achieve the ambitious beam parameters and quality. [...]
2023 - 10 p.
- Published in : JACoW eeFACT 2022 (2023) 208-217
Fulltext: PDF;
In : 65th ICFA Advanced Beam Dynamics Workshop on High Luminosity Circular e+ e- Colliders (eeFACT2022), INFN, Frascati, Italy, 12 - 16 Sep 2022, pp.208-217
|
|
9.
|
Lattice correction and polarization estimation for the Future Circular Collider e+e-
/ Wu, Yi (Ecole Polytechnique, Lausanne) ; Carlier, Felix (CERN) ; van Riesen-Haupt, Léon (Ecole Polytechnique, Lausanne) ; Hofer, Michael (CERN) ; Seidel, Mike (Ecole Polytechnique, Lausanne) ; Pieloni, Tatiana (Ecole Polytechnique, Lausanne) ; Herr, Werner (Ecole Polytechnique, Lausanne)
Precise determination of the center-of-mass energy in the Future Circular Collider e+e- (FCC-ee) at Z and W energies can be achieved by employing resonant spin depolarization techniques, for which a sufficient level of transverse beam polarization is demanded under the presence of machine imperfections. In this study, the FCC-ee lattice has been modeled and simulated with a variety of realistic lattice imperfections, including misalignments, angular deviations, BPM errors, long-range errors, etc., along with refined orbit correction and tune matching procedures. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) WEPR06
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.WEPR06
|
|
10.
|
Coupling and Dispersion Correction for the Tolerance Study in FCC-ee
/ Aumon, Sandra (CERN) ; Doblhammer, Andreas (TU Vienna) ; Härer, Bastian (KIT, Karlsruhe) ; Holzer, Bernhard (CERN) ; Oide, Katsunobu (KEK, Tsukuba)
The FCC-ee study is investigating the design of a 100 km e⁺/e⁻ circular collider for precision measurements and rare decay observations in the range of 90 to 350 GeV center of mass energy with luminosities in the order of 10³⁵ cm⁻²s⁻¹. In order to reach such performances, an extreme focusing of the beam is required in the interaction regions with a low vertical beta function of 2 mm at the IP. [...]
2017 - 6 p.
- Published in : 10.18429/JACoW-eeFACT2016-TUT3BH4
Fulltext: PDF;
In : 58th ICFA Advanced Beam Dynamics Workshop on High Luminosity Circular e+e-Colliders, Daresbury, United Kingdom, 24 - 27 Oct 2016, pp.TUT3BH4
|
|