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Optimisation of the CLIC positron source at the 1.5 TeV and 3 TeV stages

Positron source is very important for many accelerator experiments. The optimisation of positron source is therefore a crucial problem to be solved. In this report, a new simple, general and effective optimisation strategy is proposed, based on iterations of scan of free parameters, which has the ad...

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Autores principales: Zhao, Yongke, Latina, Andrea, Doebert, Steffen, Schulte, Daniel, Ma, Lianliang
Lenguaje:eng
Publicado: 2020
Materias:
Acceso en línea:http://cds.cern.ch/record/2735292
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author Zhao, Yongke
Latina, Andrea
Doebert, Steffen
Schulte, Daniel
Ma, Lianliang
author_facet Zhao, Yongke
Latina, Andrea
Doebert, Steffen
Schulte, Daniel
Ma, Lianliang
author_sort Zhao, Yongke
collection CERN
description Positron source is very important for many accelerator experiments. The optimisation of positron source is therefore a crucial problem to be solved. In this report, a new simple, general and effective optimisation strategy is proposed, based on iterations of scan of free parameters, which has the advantage of easily handling realistic parametric problems. The new strategy in principle can be 25 times faster than the old optimisation method. The optimisation of the CLIC positron source at the 3 TeV and 1.5 TeV stages with the new strategy is presented. Positron yield is improved by 43% compared with previous studies, mainly due to the removal of the distance between the targets. The validation of the simulation code is carried out with a cross-check with the ILC positron source results. In addition, studies on mesh grid size for PEDD estimation and matching of positron beam to the latest design of the injector linac are also presented. Positrons can be transported in the matched injector linac almost without losses, with a final accepted yield of 2.14 e+/e-.
id cern-2735292
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2020
record_format invenio
spelling cern-27352922023-07-20T15:05:03Zhttp://cds.cern.ch/record/2735292engZhao, YongkeLatina, AndreaDoebert, SteffenSchulte, DanielMa, LianliangOptimisation of the CLIC positron source at the 1.5 TeV and 3 TeV stagesAccelerators and Storage RingsPositron source is very important for many accelerator experiments. The optimisation of positron source is therefore a crucial problem to be solved. In this report, a new simple, general and effective optimisation strategy is proposed, based on iterations of scan of free parameters, which has the advantage of easily handling realistic parametric problems. The new strategy in principle can be 25 times faster than the old optimisation method. The optimisation of the CLIC positron source at the 3 TeV and 1.5 TeV stages with the new strategy is presented. Positron yield is improved by 43% compared with previous studies, mainly due to the removal of the distance between the targets. The validation of the simulation code is carried out with a cross-check with the ILC positron source results. In addition, studies on mesh grid size for PEDD estimation and matching of positron beam to the latest design of the injector linac are also presented. Positrons can be transported in the matched injector linac almost without losses, with a final accepted yield of 2.14 e+/e-.CERN-ACC-2020-0026CLIC-Note-1165oai:cds.cern.ch:27352922020-09-24
spellingShingle Accelerators and Storage Rings
Zhao, Yongke
Latina, Andrea
Doebert, Steffen
Schulte, Daniel
Ma, Lianliang
Optimisation of the CLIC positron source at the 1.5 TeV and 3 TeV stages
title Optimisation of the CLIC positron source at the 1.5 TeV and 3 TeV stages
title_full Optimisation of the CLIC positron source at the 1.5 TeV and 3 TeV stages
title_fullStr Optimisation of the CLIC positron source at the 1.5 TeV and 3 TeV stages
title_full_unstemmed Optimisation of the CLIC positron source at the 1.5 TeV and 3 TeV stages
title_short Optimisation of the CLIC positron source at the 1.5 TeV and 3 TeV stages
title_sort optimisation of the clic positron source at the 1.5 tev and 3 tev stages
topic Accelerators and Storage Rings
url http://cds.cern.ch/record/2735292
work_keys_str_mv AT zhaoyongke optimisationoftheclicpositronsourceatthe15tevand3tevstages
AT latinaandrea optimisationoftheclicpositronsourceatthe15tevand3tevstages
AT doebertsteffen optimisationoftheclicpositronsourceatthe15tevand3tevstages
AT schultedaniel optimisationoftheclicpositronsourceatthe15tevand3tevstages
AT malianliang optimisationoftheclicpositronsourceatthe15tevand3tevstages