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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
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2.
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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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3.
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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)
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4.
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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
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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
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The status of the energy calibration, polarization and monochromatization of the FCC-ee
/ Bauche, Jeremie (CERN) ; Blondel, Alain (CERN) ; Ciarma, Andrea (Frascati) ; Faus-Golfe, Angeles (IJCLab, Orsay) ; Bogomyagkov, Anton (Novosibirsk, IYF) ; Martens, Aurélien (IJCLab, Orsay) ; Gaskell, David (Jefferson Lab) ; Sagan, David (Cornell U.) ; Barber, Desmond (New Mexico U.) ; Shatilov, Dmitry (CERN) et al.
The Future Circular electron-positron Collider, FCC- ee, is designed for unprecedented precision for particle physics experiments from the Z-pole up to above the top-pair-threshold, corresponding to a beam energy range from 45.6 to 182.5 GeV. Performing collisions at various particle-physics resonances requires precise knowledge of the centre-of-mass energy (ECM) and collision boosts at all four interaction points. [...]
2023 - 4 p.
- Published in : JACoW IPAC 2023 (2023) MOPL059
Fulltext: PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.MOPL059
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A CLIC Damping Wiggler Prototype at ANKA: Commissioning and Preparations for a Beam Dynamics Experimental Program
/ Bernhard, Axel (KIT, Karlsruhe, IPE) ; Bragin, Alexey (Novosibirsk, IYF) ; Casalbuoni, Sara (KIT, Karlsruhe, IPE) ; Ferracin, Paolo (CERN) ; Garcia Fajardo, Laura (CERN) ; Gerstl, Stefan (KIT, Karlsruhe, IPE) ; Gethmann, Julian (KIT, Karlsruhe, IPE) ; Grau, Andreas (KIT, Karlsruhe, IPE) ; Huttel, Erhard (KIT, Karlsruhe, IPE) ; Khrushchev, Sergey (Novosibirsk, IYF) et al.
In a collaboration between CERN, BINP and KIT a prototype of a superconducting damping wiggler for the CLIC damping rings has been installed at the ANKA synchrotron light source. On the one hand, the foreseen experimental program aims at validating the technical design of the wiggler, particularly the conduction cooling concept applied in its cryostat design, in a long-term study. [...]
CERN-ACC-2016-222; CLIC-Note-1095.-
2016 - 4 p.
- Published in : 10.18429/JACoW-IPAC2016-WEPMW002
Published version from JACoW: PDF;
In : 7th International Particle Accelerator Conference, Busan, Korea, 8 - 13 May 2016, pp.WEPMW002
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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
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Tolerance Studies and Dispersion Free Steering for Extreme Low Emittance in the FCC-ee Project
/ Aumon, Sandra (CERN) ; Doblhammer, Andreas (TU Vienna) ; Härer, Bastian (KIT, Karlsruhe, IPE) ; 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. [...]
CERN-ACC-2016-128.-
2016 - 4 p.
- Published in : 10.18429/JACoW-IPAC2016-THPOR001
Published version from JACoW: PDF;
In : 7th International Particle Accelerator Conference, Busan, Korea, 8 - 13 May 2016, pp.THPOR001
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Commissioning Status of FLUTE
/ Malygin, Anton (KIT, Karlsruhe) ; Bernhard, Axel (KIT, Karlsruhe) ; Bründermann, Erik (KIT, Karlsruhe) ; Böhm, Andreas (KIT, Karlsruhe) ; Funkner, Stefan (KIT, Karlsruhe) ; Križnar, Igor (KIT, Karlsruhe) ; Marsching, Sebastian (KIT, Karlsruhe) ; Mexner, Wolfgang (KIT, Karlsruhe) ; Mochihashi, Akira (KIT, Karlsruhe) ; Müller, Anke-Susanne (KIT, Karlsruhe) et al.
FLUTE (Ferninfrarot Linac- Und Test-Experiment) will be a new compact versatile linear accelerator at the KIT. Its primary goal is to serve as a platform for a variety of accelerator studies as well as to generate strong ultra-short THz pulses for photon science. [...]
2018 - 3 p.
- Published in : 10.18429/JACoW-IPAC2018-THPMF068
External link: Fulltext
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.THPMF068
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