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Autopilot regulation for the Linac4 H$^−$ ion source

Linac4 is a 160 MeV H$^−$ linear accelerator part of the upgrade of the LHC injector chain. Its cesiated surface H$^−$ source is designed to provide a beam intensity of 40-50mA. It is operated with periodical Cs-injection at typically 30 days intervals [1] and this implies that the beam parameters w...

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Autores principales: Voulgarakis, G, Lettry, J, Mattei, S, Lefort, B, Correia Costa, V J
Lenguaje:eng
Publicado: 2017
Materias:
Acceso en línea:https://dx.doi.org/10.1063/1.4995732
http://cds.cern.ch/record/2319370
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author Voulgarakis, G
Lettry, J
Mattei, S
Lefort, B
Correia Costa, V J
author_facet Voulgarakis, G
Lettry, J
Mattei, S
Lefort, B
Correia Costa, V J
author_sort Voulgarakis, G
collection CERN
description Linac4 is a 160 MeV H$^−$ linear accelerator part of the upgrade of the LHC injector chain. Its cesiated surface H$^−$ source is designed to provide a beam intensity of 40-50mA. It is operated with periodical Cs-injection at typically 30 days intervals [1] and this implies that the beam parameters will slowly evolve during operation. Autopilot is a control software package extending CERN developed Inspector framework. The aim of Autopilot is to automatize the mandatory optimization and cesiation processes and to derive performance indicators, thus keeping human intervention minimal. Autopilot has been developed by capitalizing on the experience from manually operating the source. It comprises various algorithms running in real-time, which have been devised to: • Optimize the ion source performance by regulation of H2 injection, RF power and frequency. • Describe the performance of the source with performance indicators, which can be easily understood by operators. • Identify failures, try to recover the nominal operation and send warning in case of deviation from nominal operation. • Make the performance indicators remotely available through Web pages. Autopilot is at the same level of hierarchy as an operator, in the CERN infrastructure. This allows the combination of all ion source devices, providing the required flexibility. Autopilot is executed in a dedicated server, ensuring unique and centralized control, yet allowing multiple operators to interact at runtime, always coordinating between them. Autopilot aims at flexibility, adaptability, portability and scalability, and can be extended to other components of CERN’s accelerators. In this paper, a detailed description of the Autopilot algorithms is presented, along with first results of operating the Linac4 H$^−$ Ion Source with Autopilot.
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language eng
publishDate 2017
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spelling oai-inspirehep.net-16742762019-09-30T06:29:59Zdoi:10.1063/1.4995732http://cds.cern.ch/record/2319370engVoulgarakis, GLettry, JMattei, SLefort, BCorreia Costa, V JAutopilot regulation for the Linac4 H$^−$ ion sourceAccelerators and Storage RingsLinac4 is a 160 MeV H$^−$ linear accelerator part of the upgrade of the LHC injector chain. Its cesiated surface H$^−$ source is designed to provide a beam intensity of 40-50mA. It is operated with periodical Cs-injection at typically 30 days intervals [1] and this implies that the beam parameters will slowly evolve during operation. Autopilot is a control software package extending CERN developed Inspector framework. The aim of Autopilot is to automatize the mandatory optimization and cesiation processes and to derive performance indicators, thus keeping human intervention minimal. Autopilot has been developed by capitalizing on the experience from manually operating the source. It comprises various algorithms running in real-time, which have been devised to: • Optimize the ion source performance by regulation of H2 injection, RF power and frequency. • Describe the performance of the source with performance indicators, which can be easily understood by operators. • Identify failures, try to recover the nominal operation and send warning in case of deviation from nominal operation. • Make the performance indicators remotely available through Web pages. Autopilot is at the same level of hierarchy as an operator, in the CERN infrastructure. This allows the combination of all ion source devices, providing the required flexibility. Autopilot is executed in a dedicated server, ensuring unique and centralized control, yet allowing multiple operators to interact at runtime, always coordinating between them. Autopilot aims at flexibility, adaptability, portability and scalability, and can be extended to other components of CERN’s accelerators. In this paper, a detailed description of the Autopilot algorithms is presented, along with first results of operating the Linac4 H$^−$ Ion Source with Autopilot.oai:inspirehep.net:16742762017
spellingShingle Accelerators and Storage Rings
Voulgarakis, G
Lettry, J
Mattei, S
Lefort, B
Correia Costa, V J
Autopilot regulation for the Linac4 H$^−$ ion source
title Autopilot regulation for the Linac4 H$^−$ ion source
title_full Autopilot regulation for the Linac4 H$^−$ ion source
title_fullStr Autopilot regulation for the Linac4 H$^−$ ion source
title_full_unstemmed Autopilot regulation for the Linac4 H$^−$ ion source
title_short Autopilot regulation for the Linac4 H$^−$ ion source
title_sort autopilot regulation for the linac4 h$^−$ ion source
topic Accelerators and Storage Rings
url https://dx.doi.org/10.1063/1.4995732
http://cds.cern.ch/record/2319370
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