CERN Accelerating science

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1.
Ultra narrowband detection scheme for dark photon / axion around 30 GHz / Miyazaki, A (Uppsala U.) ; Lofnes, T (Uppsala U.) ; Caspers, F (ESI, Archamps ; CERN) ; Spagnolo, P (INFN, Pisa) ; Jelonnek, J (KIT, Karlsruhe) ; Ruess, T (KIT, Karlsruhe) ; Steinmann, J L (KIT, Karlsruhe) ; Thumm, M (KIT, Karlsruhe)
We demonstrated that ultra narrowband filtering at 30 GHz dramatically enhances the signal-to-noise ratio to search for dark matter candidates which couple to millimeter waves. [...]
2022. - 1 p.
2.
Millimeter-Wave WISP Search with Coherent Light-Shining-Through-a-Wall Toward the STAX Project / Miyazaki, Akira (Uppsala U.) ; Lofnes, Tor (Uppsala U.) ; Caspers, Fritz (Uppsala U. ; CERN) ; Spagnolo, Paolo (Uppsala U.) ; Jelonnek, John (Uppsala U. ; KIT, Karlsruhe) ; Ruess, Tobias (Uppsala U. ; KIT, Karlsruhe) ; Steinmann, Johannes L. (Uppsala U. ; KIT, Karlsruhe) ; Thumm, Manfred (Uppsala U. ; KIT, Karlsruhe)
A dark photon is one of the simplest extensions of the Standard Model of particle physics and can be a dark matter candidate. Dark photons kinetically mix with ordinary photons. [...]
arXiv:2212.01139.- 2024-01-01 - 15 p. - Published in : Ann. Phys. (Leipzig) 536 (2024) 2200619 Fulltext: 2212.01139 - PDF; document - PDF;
In : 17th Workshop on Axions, WIMPs and WISPs (PATRAS 2022), Mainz, Germany, 8 - 12 Aug 2022, pp.2200619
3.
Proof-of-principle of the ultra-narrowband detection scheme at 30 GHz toward weakly interacting slim particle search / Miyazaki, Akira (Uppsala University (SE)) ; Caspers, Fritz (European Scientific Institute (FR)) ; Steinmann, J L (Karlsruhe Institute of Technology) ; Ruess, Tobias (Karlsruhe Institute of Technology) ; Jelonnek, John (Karlsruhe Institute of Technology)
A coherent detection scheme was tested for dark photons and axion search with millimeter waves [...]
CERN-ACC-NOTE-2021-0032.
- 2021.
Full text
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.
Diagnostics of longitudinal bunch instabilities at KARA / Kehrer, B (KIT, Karlsruhe) ; Brosi, M (KIT, Karlsruhe) ; Bründermann, E (KIT, Karlsruhe) ; Funkner, S (KIT, Karlsruhe) ; Nasse, M J (KIT, Karlsruhe) ; Niehues, G (KIT, Karlsruhe) ; Patil, M M (KIT, Karlsruhe) ; Steinmann, J L (KIT, Karlsruhe ; Argonne (main)) ; Müller, A S (KIT, Karlsruhe)
KARA, the Karlsruhe Research Accelerator, can be operated in different modes, including a short-bunch mode. During this mode, where the dispersion is stretched in order to reduce the momentum-compaction factor, micro-bunching instability can occur. [...]
2020 - 4 p. - Published in : 10.23732/CYRCP-2020-009.137 Fulltext: PDF;
In : ICFA mini-Workshop on Mitigation of Coherent Beam Instabilities in Particle Accelerators (MCBI 2019), Zermatt, Switzerland, 23 - 27 Sep 2019, pp.137 (CERN-2020-009)
6.
Investigating Polarisation and Shape of Beam Microwave Signals at the ANKA Storage Ring / Schwarzkopf, J (KIT, Karlsruhe, IPE) ; Brosi, M (KIT, Karlsruhe, IPE) ; Chang, C (KIT, Karlsruhe, IPE) ; Hertle, E (KIT, Karlsruhe, IPE) ; Judin, V (KIT, Karlsruhe, IPE) ; Kehrer, B (KIT, Karlsruhe, IPE) ; Müller, A-S (KIT, Karlsruhe, IPE) ; Schönfeldt, P (KIT, Karlsruhe, IPE) ; Schuh, M (KIT, Karlsruhe, IPE) ; Schütze, P M (KIT, Karlsruhe, IPE) et al.
At the ANKA synchrotron radiation facility measure- ments in the microwave range (10 to 12 GHz) employing a LNB (Low Noise Block), which is the receiving part of a Satellite-TV system, have been carried out. Experiments showedthattheobservedsignaldependsonthelengthofthe electron bunches. [...]
2014 External link: Published version from JaCoW
In : 5th International Particle Accelerator Conference, Dresden, Germany, 15 - 20 Jun 2014, pp.4090

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