CERN Accelerating science

CERN Document Server 5 записей найдено  Поиск длился 0.54 секунд. 
1.
The status of the FCC-ee optics tuning / van Riesen-Haupt, Léon (Ecole Polytechnique, Lausanne) ; Franchi, Andrea (ESRF, Grenoble) ; Faus-Golfe, Angeles (IJCLab, Orsay) ; Chance, Antoine (Paris, CEA) ; Dalena, Barbara (Paris, CEA) ; Järmyr Eriksson, Carl (CERN) ; Carli, Christian (CERN) ; Garcia Jaimes, Cristobal Miguel (Ecole Polytechnique, Lausanne) ; Shatilov, Dmitry (CERN) ; Musa, Elaf (DESY) et al.
With a circumference of approximately 91 km, the Future Circular electron-positron Collider, FCC-ee, aims for unprecedented luminosities at beam energies from 45.6 to 182.5 GeV. A major challenge is reaching its design performance in the presence of magnet misalignments and field errors. [...]
2024 - 4 p. - Published in : JACoW IPAC 2024 (2024) WEPR02 Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.WEPR02
2.
The SuperKEKB Has Broken the World Record of the Luminosity / Funakoshi, Yoshihiro (KEK, Tsukuba) ; Abe, Tetsuo (KEK, Tsukuba) ; Akai, Kazunori (KEK, Tsukuba) ; Arimoto, Yasushi (KEK, Tsukuba) ; Egawa, Kazumi (KEK, Tsukuba) ; Enomoto, Shun (KEK, Tsukuba) ; Fukuma, Hitoshi (KEK, Tsukuba) ; Furukawa, Kazuro (KEK, Tsukuba) ; Iida, Naoko (KEK, Tsukuba) ; Ikeda, Hitomi (KEK, Tsukuba) et al.
The SuperKEKB broke the world record of the luminosity in June 2020 in the Phase 3 operation. The luminosity has been increasing since then and the present highest luminosity is 4.65 x 10³⁴ cm⁻²s⁻¹ with β_{y}^{*} of 1 mm. [...]
2022 - 5 p. - Published in : JACoW IPAC 2022 (2022) 1-5 Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.1-5
3.
Impact of Bunch Current on Optics Measurements in SuperKEKB / Keintzel, Jacqueline (CERN ; TU Vienna) ; Ishibashi, Takuya (KEK, Tsukuba) ; Koiso, Haruyo (KEK, Tsukuba) ; Mitsuka, Gaku (KEK, Tsukuba) ; Morita, Akio (KEK, Tsukuba) ; Ohmi, Kazuhito (KEK, Tsukuba) ; Ohnishi, Yukiyoshi (KEK, Tsukuba) ; Sugimoto, Hiroshi (KEK, Tsukuba) ; Terui, Shinji (KEK, Tsukuba) ; Tobiyama, Makoto (KEK, Tsukuba) et al.
SuperKEKB has recently achieved the world record instantaneous luminosity of 2.8 × 10³⁴ \si{cm⁻²s⁻¹} and aims at reaching a target luminosity of about 6 × 10³⁵ \si{cm⁻²s⁻¹}. To accomplish this goal it is planned to increase beam currents up to §I{3.6}{A} and §I{2.6}{A} for the positron and the electron ring, respectively. [...]
Geneva : JACoW, 2021 - 4 p. - Published in : JACoW IPAC 2021 (2021) 1356-1359 Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.1356-1359
4.
SuperKEKB Optics Measurements Using Turn-by-Turn Beam Position Data / Keintzel, Jacqueline (CERN ; TU Vienna) ; Koiso, Haruyo (KEK, Tsukuba) ; Mitsuka, Gaku (KEK, Tsukuba) ; Morita, Akio (KEK, Tsukuba) ; Ohmi, Kazuhito (KEK, Tsukuba) ; Ohnishi, Yukiyoshi (KEK, Tsukuba) ; Sugimoto, Hiroshi (KEK, Tsukuba) ; Tobiyama, Makoto (KEK, Tsukuba) ; Tomás García, Rogelio (CERN) ; Yang, Renjun (KEK, Tsukuba)
SuperKEKB, an asymmetric electron-positron collider, has recently achieved the world record instantaneous luminosity of 2.8 × 10³⁴ \si{cm⁻²s⁻¹} using crab-waist collision scheme. In order to reach the design value of 6×10³⁵ \si{cm⁻²s⁻¹} a vertical beta function at the interaction point of §I{0.3}{mm} is required, demanding unprecedented optics control. [...]
Geneva : JACoW, 2021 - 4 p. - Published in : JACoW IPAC 2021 (2021) 1352-1355 Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.1352-1355
5.
Off-momentum Optics at SuperKEKB / Ohnishi, Yukiyoshi (KEK, Tsukuba) ; Koiso, Haruyo (KEK, Tsukuba) ; Morita, Akio (KEK, Tsukuba) ; Ohmi, Kazuhito (KEK, Tsukuba) ; Oide, Katsunobu (CERN) ; Sugimoto, Hiroshi (KEK, Tsukuba)
The nano-beam scheme can squeeze the vertical beta function at the IP much smaller than the bunch length. It implies that the large chromaticity is generated in the vicinity of the final focus quadrupole magnets and the strong sextupoles are adopted to correct the chromaticity, for instance the local chromaticity corrections. [...]
JACOW, 2019 - 5 p. - Published in : 10.18429/JACoW-eeFACT2018-TUOBB02 Fulltext: PDF;
In : 62nd ICFA Advanced Beam Dynamics Workshop on High Luminosity Circular e+e− Colliders, Hong Kong, China, 24 - 27 Sep 2018, pp.TUOBB02

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54 Sugimoto, H
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