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A New Algorithm for Positron Source Parameter Optimisation
/ Zhao, Yongke (Shandong U. ; CERN) ; Döbert, Steffen (CERN) ; Latina, Andrea (CERN) ; Ma, Lianliang (Shandong U.)
In this report, we proposed a new simple and efficient algorithm for positron source parameter optimisation, which is based on iterations of scan of free parameters in the simulation. The new algorithm is fast, simple and convincing since the results can be visually drawn and flexibly tuned and it has an advantage that it can easily handle realistic parametric problems with more than one objective quantities to optimise. [...]
2021 - 4 p.
- Published in : 10.18429/JACoW-IPAC2021-WEPAB013
Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, Br, 24 - 28 May 2021, pp.WEPAB013
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Comparison of Different Matching Device Field Profiles for the FCC-ee Positron Source
/ Zhao, Yongke (Shandong U. ; CERN) ; Auchmann, Bernhard (PSI, Villigen) ; Chaikovska, Iryna (IJCLab, Orsay) ; Chehab, Robert (IJCLab, Orsay) ; Craievich, Paolo (PSI, Villigen) ; Döbert, Steffen (CERN) ; Kosse, Jaap (PSI, Villigen) ; Latina, Andrea (CERN) ; Ma, Lianliang (Shandong U.) ; Martyshkin, Pavel (Novosibirsk, IYF) et al.
In this report, we compared different matching device field profiles for the FCC-ee positron source. The matching device is used to capture positrons with magnetic field. [...]
JACoW, 2021 - 4 p.
- Published in : JACoW IPAC 2021 (2021) 2617-2620
Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.2617-2620
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3.
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Optimisation of the CLIC Positron Source
/ Zhao, Yongke (Shandong U. ; CERN) ; Bajas, Hugues (CERN) ; Döbert, Steffen (CERN) ; Latina, Andrea (CERN) ; Ma, Lianliang (Shandong U.)
In this report, we reoptimised the CLIC positron source at all collision energy stages. Simulation, optimisation algorithm and results were all improved compared with previous studies. [...]
2021 - 4 p.
- Published in : 10.18429/JACoW-IPAC2021-WEPAB014
Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, Br, 24 - 28 May 2021, pp.2613-2616
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Optimisation of the FCC-ee Positron Source Using a HTS Solenoid Matching Device
/ Zhao, Yongke (CERN) ; Auchmann, Bernhard (PSI, Villigen) ; Chaikovska, Iryna (IJCLab, Orsay) ; Chehab, Robert (IJCLab, Orsay) ; Craievich, Paolo (PSI, Villigen) ; Döbert, Steffen (CERN) ; Duda, Michal (Cracow, INP) ; Kosse, Jaap (PSI, Villigen) ; Latina, Andrea (CERN) ; Martyshkin, Pavel (Novosibirsk, IYF) et al.
In this paper, we present the simulation and optimisation of the FCC-ee positron source, where a high-temperature superconducting (HTS) solenoid is used as the matching device to collect positrons from the target. The "conventional" target scheme is used which simply consists of amorphous tungsten. [...]
2022 - 4 p.
- Published in : JACoW IPAC 2022 (2022) 2003-2006
Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.2003-2006
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A Start-to-End Optimisation Strategy for the CompactLight Accelerator Beamline
/ Zhao, Yongke (CERN) ; Aksoy, Avni (Ankara U. ; CERN) ; Castañeda Cortés, Hector Mauricio (Cockcroft Inst. Accel. Sci. Tech.) ; Dunning, David (Cockcroft Inst. Accel. Sci. Tech.) ; Latina, Andrea (CERN) ; Thompson, Neil (Cockcroft Inst. Accel. Sci. Tech.)
The CompactLight collaboration designed a compact and cost-effective hard X-ray FEL facility, complemented by a soft X-ray option, based on X-band acceleration, capable of operating at 1 kHz pulse repetition rate. In this paper, we present a new simple start-to-end optimisation strategy that is developed for the CompactLight accelerator beamline, focusing on the hard X-ray mode. [...]
2022 - 4 p.
- Published in : JACoW LINAC 2022 (2022) 573-576
Fulltext: PDF;
In : 31st Linear Accelerator Conference (LINAC22), Liverpool, UK, 28 Aug - 2 Sep 2022, pp.573-576
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6.
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The FCCee Pre-Injector Complex
/ Craievich, Paolo (PSI, Villigen) ; Alharthi, Fahad (IJCLab, Orsay) ; Auchmann, Bernhard (PSI, Villigen) ; Bartmann, Wolfgang (CERN) ; Benedikt, Michael (CERN) ; Besana, Maria Ilaria (CERN) ; Bettoni, Simona (PSI, Villigen) ; Braun, Hans-Heinrich (PSI, Villigen) ; Calviani, Marco (CERN) ; Chaikovska, Iryna (IJCLab, Orsay) et al.
The international FCC study group published in 2019 a Conceptual Design Report for an electron-positron collider with a centre-of-mass energy from 90 to 365 GeV with a beam currents of up to 1.4 A per beam. The high beam current of this collider create challenging requirements on the injection chain and all aspects of the linac need to be carefully reconsidered and revisited, including the injection time structure. [...]
2022 - 4 p.
- Published in : JACoW IPAC 2022 (2022) 2007-2010
Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.2007-2010
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7.
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Radiation Load Studies for the FCC-ee Positron Source with a Superconducting Matching Device
/ Humann, Barbara (Vienna U. ; CERN) ; Auchmann, Bernhard (PSI, Villigen) ; Chaikovska, Iryna (IJCLab, Orsay) ; Kosse, Jaap (PSI, Villigen) ; Latina, Andrea (CERN) ; Lechner, Anton (CERN) ; Ogur, Salim (IJCLab, Orsay) ; Zhao, Yongke (CERN)
For an electron-positron collider like FCC-ee, the production of positrons plays a crucial role. One of the design options considered for the FCC-ee positron source employs a superconducting solenoid made of HTS coils as an adiabatic matching device. [...]
2022 - 4 p.
- Published in : JACoW IPAC 2022 (2022) 2879-2882
Fulltext: PDF;
In : 13th International Particle Accelerator Conference (IPAC 2022), Bangkok, Thailand, 12 - 17 Jun 2022, pp.2879-2882
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8.
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Update of the CLIC Positron Source
/ Han, Yanliang (Shandong U.) ; Bayar, Cafer (Ankara U.) ; Döbert, Steffen (CERN) ; Latina, Andrea (CERN) ; Ma, Lianliang (Shandong U.) ; Schulte, Daniel (CERN)
The baseline positron source of CLIC has been optimised for the 3 TeV c.o.m. energy. [...]
CERN-ACC-2018-077; CLIC-Note-1146.-
2018 - 4 p.
- Published in : 10.18429/JACoW-IPAC2018-MOPMF055
Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.MOPMF055
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