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1.
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Concepts and Considerations for FCC-ee Top-Up Injection Strategies
/ Ramjiawan, Rebecca (CERN) ; Aiba, Masamitsu (PSI, Villigen) ; Bartmann, Wolfgang (CERN) ; Dutheil, Yann (CERN) ; Hofer, Michael (CERN) ; Hunchak, Patrick (PSI, Villigen)
The Future Circular electron-positron Collider (FCC-ee) is proposed to operate in four modes, with beam energies from 45.6 GeV (Z-pole) to 182.5 GeV (tt-bar production) and luminosities up to 4.6×10³⁶ cm²s⁻¹. At the highest energies the beam lifetime would be less than one hour, meaning that top-up injection will be crucial to maximise the integrated luminosity. [...]
2022 - 4 p.
- Published in : JACoW IPAC 2022 (2022) 2106-2109
Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.2106-2109
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2.
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Studies on Top-Up Injection into the FCC-ee Collider Ring
/ Hunchak, Patrick (Saskatchewan U., CLS ; Saskatchewan U.) ; Aiba, Masamitsu (PSI, Villigen) ; Bartmann, Wolfgang (CERN) ; Boland, Mark (Saskatchewan U., CLS ; Saskatchewan U.) ; Dutheil, Yann (CERN) ; Hofer, Michael (CERN) ; Ramjiawan, Rebecca (CERN) ; Zimmermann, Frank (CERN)
In order to maximize the luminosity production time in the FCC-ee, top-up injection will be employed. The positron and electron beams will be accelerated to the collision energy in the booster ring before being injected with either a small transverse or longitudinal separation to the stored beam. [...]
2022 - 4 p.
- Published in : JACoW IPAC 2022 (2022) 1699-1702
Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.1699-1702
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3.
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Overall Injection Strategy for FCC-ee
/ Ogur, Salim (CERN) ; Aiba, Masamitsu (PSI, Villigen) ; Antoniou, Fanouria (CERN) ; Barnyakov, Alexey (Novosibirsk, IYF) ; Chaikovska, Iryna (Orsay, LAL) ; Charles, Tessa (CERN) ; Chehab, Robert (Orsay, LAL) ; Etisken, Ozgur (Ankara U.) ; Furukawa, Kazuro (KEK, Tsukuba) ; Härer, Bastian (CERN) et al.
The Future Circular electron-positron Collider (FCC-ee) requires fast cycling injectors with very low extraction emittances to provide and maintain extreme luminosities at center of mass energy varying between 91.2-385 GeV in the collider. For this reason, the whole injector complex table is prepared by putting into consideration the minimum fill time from scratch, bootstrapping, transmission efficiency as well as store time of the beams in synchrotrons to approach equilibrium emittances. [...]
JACOW, 2019 - 8 p.
- Published in : 10.18429/JACoW-eeFACT2018-TUPAB03
Published fulltext: PDF;
In : 62nd ICFA Advanced Beam Dynamics Workshop on High Luminosity Circular e+e− Colliders, Hong Kong, China, 24 - 27 Sep 2018, pp.TUPAB03
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4.
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Systematic optics studies for the commissioning of the AWAKE electron beamline
/ Bracco, Chiara (CERN) ; Aiba, Masamitsu (PSI, Villigen) ; Goddard, Brennan (CERN) ; Gorgisyan, Ishkhan (CERN) ; Turner, Marlene (CERN) ; Velotti, Francesco (CERN) ; Verra, Livio (CERN)
The commissioning of the AWAKE electron beam line was successfully completed in 2018. Despite a modest length of about 15 m, this low-energy line is quite complex and several iterations were needed before finding satisfactory agreement between the model and the measurements. [...]
CERN-ACC-2019-210.-
2019 - 4 p.
- Published in : 10.18429/JACoW-IPAC2019-WEPMP029
Fulltext from publisher: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.WEPMP029
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5.
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6.
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Design of Beam Optics for the FCC-ee Collider Ring
/ Oide, Katsunobu (KEK, Tsukuba) ; Aiba, Masamitsu (PSI, Villigen) ; Aumon, Sandra (CERN) ; Benedikt, Michael (CERN) ; Blondel, Alain (Geneva U.) ; Bogomyagkov, Anton (Novosibirsk, IYF) ; Boscolo, Manuela (LNF, Dafne Light) ; Burkhardt, Helmut (CERN) ; Cai, Yunhai (SLAC) ; Doblhammer, Andreas (CERN) et al.
A design of beam optics will be presented for the FCC-ee double-ring collider. The main characteristics are 45 to 175 GeV beam energy, 100 km circumference with two IPs/ring, 30 mrad crossing angle at the IP, crab-waist scheme with local chromaticity correction system, and "tapering" of the magnets along with the local beam energy. [...]
CERN-ACC-2016-127.-
2016 - 3 p.
- Published in : 10.18429/JACoW-IPAC2016-THPOR022
Published version from JACoW: PDF;
In : 7th International Particle Accelerator Conference, Busan, Korea, 8 - 13 May 2016, pp.THPOR022
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7.
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Review of Linear Optics Measurements and Corrections in Accelerators
/ Tomás, Rogelio (CERN) ; Aiba, Masamitsu (PSI, Villigen) ; Franchi, Andrea (ESRF, Grenoble) ; Iriso, Ubaldo (CELLS - ALBA, LLS)
The measurement and correction of optics parameters has been a major concern since the advent of strong focusing synchrotron accelerators. Traditionally, colliders have led the development of methods for optics control based on turn-by-turn centroid data, while lepton storage rings have focused on closed orbit response techniques. [...]
IPAC-2016-MOYCA01; CERN-ACC-2016-321.-
2016 - 7 p.
- Published in : 10.18429/JACoW-IPAC2016-MOYCA01
Published version from JACoW: PDF; External link: JACoW
In : 7th International Particle Accelerator Conference, Busan, Korea, 8 - 13 May 2016, pp.MOYCA01
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8.
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9.
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Study of beam acceleration system for FFAG accelerator at Kyushu University
/ Takase, Hidenobu (Kyushu U.) ; Yonemura, Yujiro (Kyushu U.) ; Arima, Hidehiko (Kyushu U.) ; Mochizuki, Syunsuke (Kyushu U.) ; Matsunaga, Takashi (Kyushu U.) ; Fuzinaka, Tatsuya (Kyushu U.) ; Korenaga, Tadashi (Kyushu U.) ; Hasuo, Tadahiko (Kyushu U.) ; Ikeda, Nobuo (Kyushu U.) ; Takagi, Akira (KEK, Tsukuba) et al.
2009
- Published in : Fall Meetings of Atomic Energy Society of Japan (2009) , pp. 125
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10.
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