Optimization of Accelerators and Light Sources within · PDF fileOptimization of Accelerators...
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Optimization of Accelerators and Light Sources within oPAC C.P. Welsch, Cockcroft Institute and The University of Liverpool, UK on behalf of the oPAC Consortium [email protected] http://www.opac-project.eu Abstract The optimization of particle accelerators and light sources by combining studies into beam physics, instrumentation, numerical simulations and accelerator control systems is the aim of the EU-funded oPAC project. With a budget of more than 6 M€, oPAC is one of the largest training networks ever funded by the EU and currently trains more than 20 Marie Curie Fellows. This presents selected research highlights, including optimization studies into the CERN Proton Synchrotron (PS), measurement and correction of linear and poster nonlinear optics distortions in the ALBA synchrotron (Spain), perturbation measurements of a cavity Schottky noise detector at GSI (Germany) and R&D into device control data base tool at COSYLAB (Slovenia). Moreover, a summary of past and future oPAC events is also given. Research Training Training within is provided locally at the respective host institute, the network primarily through research, local lecture and seminar series, as well as - oPAC wide training offered by the whole consortium. In addition, the network also organizes a series of Topical Workshops and nternational Schools for I its Fellows which are also open to the wider accelerator community. International School on Accelerator Optimization London, UK At the start of their training all oPAC fellows participated in either the CERN Accelerator School or the Joint Universities Accelerator School. This provided them a sound training basis as they take on their projects within the Network. An will be organized by the oPAC School on Accelerator Optimization consortium at Royal Holloway University of between 7 -11 July th th 2014 London, UK. It will cover advanced techniques for the optimization of particle accelerator performance. We have made extra places available for IPAC participants only and re-opened registration - register now ! Topical Workshops Venues across the network International Conference on Accelerator Optimization Cockcroft Institute/University of Liverpool, UK Whilst the beneficiary and associated partners were defined at proposal stage, the projects encourages additional partner institutions to join this initiative. So- called can participate in the network‘s research activities and adjunct partners benefit from the wide ranging training program. Information on how to join can be obtained from the coordinator. As part of the network's long term strategy to create lasting structures for the wider scientific community, will a series of Topical Workshops. oPAC organize A first workshop on the was Grand Challenges of Accelerator Optimization held on 26/27 June 2013 at CERN and covered all work packages of the project. More than 120 registered participants reviewed the state-of-the-art in accelerator R&D during the two days. CERN IndicoID: 243336. In a 3-day international conference on the optimization of October 2015 particle accelerators will be organized , with a focus on the at CNA in Seville methods developed within the network. It will organized for the be international accelerator community focus on contributions from early with a stage researchers. oPAC is structured into four R&D work packages: beam physics, beam diagnostics, simulation tools and accelerator control and data acquisition systems. Fellow R&S stretches across these work packages and targets the optimization of existing and future accelerator-based infrastructures. Here, recent from are presented. results a few selected projects Optimization Studies into the CERN PS (M. McAteer, et al.-CERN) Beam dynamics studies into the effect of space charge and instabilities that are being observed experimentally i have been n the PS Booster carried out For this purpose . tracking simulations with space charge effects and an AC dipole, and comparisons of simulated results with trial measurements . were realized ( ) TUPRI029 Device Control Database Tool (DCDB) (P. Maslov, et al. - COSYLAB) A new control system which provides an easy-to-use interface for quick configuration of entire facility . It uses an is being developed at COSYLAB Microsoft Excel as front-end application and allows the user to quickly generate and deploy IOC configuration, such as EPICS start-up scripts, alarms and archive configuration, onto IOCs. The DCDB tool utilizes a relational database which stores information about all elements of the accelerator. The communication between the client, database and IOCs is realized by a REST server written in Python. The key feature is that the user does not need to recompile the source code. It is achieved by using a dynamic library loader, which automatically loads and links device support libraries, see the illustration on the left. The spectrum of turn-by-turn trajectory shows two prominent peaks in each plane, in addition to the tunes . These peaks always occur at , see figure above a fixed frequency throughout the entire acceleration cycle ( ). The THPRO082 exact origins of this perturbation is not currently understood and subject to beam dynamics studies. hoped It is that the cause of this perturbation can be located more precisely in the future when more BPM data will be available. This project has received funding from the European Union's Seventh Framework Programme for research, technological development and demonstration under grant agreement no 289485. Spectrum of horizontal and vertical beam trajectories during turns 85,000-90,000 Overview of . DCDB architecture P s erformance improvement using Genetic Algorithms (X. Gavalda, et al.-SOLEIL) Multi-Objective Genetic Algorithm (MOGA) and the tracking code ELEGANT have been used the to optimize the linear and non-linear beam dynamics of SOLEIL . synchrotron light source in France First, the effects of the sextupoles on the beam dynamics of the machine were optimized. In a second step, MOGA-based optimization basis to are used as a study different scenarios storage ring upgrade of the with on example shown in the figure to the right. These upgrades will target a reduction of the effective horizontal emittance increase the , thereby helping to overall ( ) brightness of the facility . MOPMR007 Optimization results of MOGA using 2 quadrupoles, 11 families of sextupoles without magnetic errors or vacuum chambers at SOLEIL during 5 days Perturbation Measurements of a Model Cavity (X. Chen, et al.- GSI) A diagnostics cavity was manufactured and delivered to GSI at the end of last year. It has been used as a prototype to prove the design concept of a cavity- based, transversely sensitive, heavy-ion detector by means of Schottky noises. Tests were carried out on a dedicated platform for shunt impedance measurements of the cavity . ( ) THPM101 In the setup the circular cavity stands on a 2-D high-precision movement unit, consisting of two active tracks and two passive tracks. A 3 mm thick ceramic rod goes through the beam pipe and is fastened to a pair of height gauges at both sides. All met for a dedicated Fellows Researcher Skills School in Liverpool, UK in June 2013. During the week-long school they were provided with subject-specific training in addition to generic topics, including project management, scientific writing, problem solving techniques and building bridges between academia and industry. Expert on 'Simulation Tools' and training days 'Beam Diagnostics' were held for all Fellows, hosted by CST AG and Bergoz, respectively. A Workshop on Libera was held at Instrumentation Technologies in April 2014 and one on Beam Instrumentation focussing on beam profile and position monitoring , loss was hosted by CIVIDEC in Vienna, May 2014 in . More are in the planning. Full details and information about how to register can be found in the network‘s quarterly and its Facebook page. In order to subscribe, newsletter please send an email to the coordinator or ‚like‘ the project. The concept for this chool had initially been developed by DITANET, but has s since been refined is now offered to all PGR students in the School of . It Physical Sciences at University of Liverpool. Discussions with other HEIs are ongoing with the aim to let more benefit from this successful researchers scheme which was recently commended as by the EU. a success story Distribution of the shunt impedance .
Transcript of Optimization of Accelerators and Light Sources within · PDF fileOptimization of Accelerators...
Optimization of Acceleratorsand Light Sources within oPAC
C.P. Welsch, Cockcroft Institute and The University of Liverpool, UKon behalf of the oPAC Consortium
[email protected] http://www.opac-project.eu
Abstract
The optimization of particle accelerators and light sources by combining studies into beam physics, instrumentation, numerical simulations and accelerator controlsystems is the aim of the EU-funded oPAC project. With a budget of more than 6 M€, oPAC is one of the largest training networks ever funded by the EU and currentlytrains more than 20 Marie Curie Fellows.This presents selected research highlights, including optimization studies into the CERN Proton Synchrotron (PS), measurement and correction of linear andposternonlinear optics distortions in the ALBA synchrotron (Spain), perturbation measurements of a cavity Schottky noise detector at GSI (Germany) and R&D into devicecontrol data base tool at COSYLAB (Slovenia). Moreover, a summary of past and future oPAC events is also given.
Research Training
Training within is provided locally at the respective host institute,the networkprimarily through research, local lecture and seminar series, as well as -oPACwide training offered by the whole consortium. In addition, the network alsoorganizes a series of Topical Workshops and nternational Schools forI itsFellows which are also open to the wider accelerator community.
International School on Accelerator OptimizationLondon, UK
At the start of their training all oPAC fellows participated in either the CERNAccelerator School or the Joint Universities Accelerator School. This providedthem a sound training basis as they take on their projects within the Network.An will be organized by theoPAC School on Accelerator Optimizationconsortium at Royal Holloway University ofbetween 7 -11 July
th th2014
London, UK. It will cover advanced techniques for the optimization of particleaccelerator performance. We have made extra places available for IPACparticipants only and re-opened registration - register now !
Topical WorkshopsVenues across the network
International Conference on Accelerator OptimizationCockcroft Institute/University of Liverpool, UK
Whilst the beneficiary and associated partners were defined at proposal stage,the projects encourages additional partner institutions to join this initiative. So-called can participate in the network‘s research activities andadjunct partnersbenefit from the wide ranging training program. Information on how to join canbe obtained from the coordinator.
As part of the network's long term strategy to create lasting structures for thewider scientific community, will a series of Topical Workshops.oPAC organizeA first workshop on the wasGrand Challenges of Accelerator Optimizationheld on 26/27 June 2013 at CERN and covered all work packages of theproject. More than 120 registered participants reviewed the state-of-the-art inaccelerator R&D during the two days. CERN IndicoID: 243336.
In a 3-day international conference on the optimization ofOctober 2015particle accelerators will be organized , with a focus on theat CNA in Sevillemethods developed within the network. It will organized for thebeinternational accelerator community focus on contributions from earlywith astage researchers.
oPAC is structured into four R&D work packages: beam physics, beamdiagnostics, simulation tools and accelerator control and data acquisitionsystems. Fellow R&S stretches across these work packages and targets theoptimization of existing and future accelerator-based infrastructures. Here,recent from are presented.results a few selected projects
Optimization Studies into the CERN PS (M. McAteer, et al.-CERN)
Beam dynamics studies into the effect of spacecharge and instabilities that are being observedexperimentally i have beenn the PS Boostercarried out For this purpose. tracking simulationswith space charge effects and an AC dipole, andcomparisons of simulated results with trialmeasurements .were realized ( )TUPRI029
Device Control Database Tool (DCDB) (P. Maslov, et al. - COSYLAB)
A new control system which provides an easy-to-use interface for quickconfiguration of entire facility . It usesan is being developed at COSYLABMicrosoft Excel as front-end application and allows the user to quicklygenerate and deploy IOC configuration, such as EPICS start-up scripts,alarms and archive configuration, onto IOCs.
The DCDB tool utilizes a relational database whichstores information about all elements of theaccelerator. The communication between the client,database and IOCs is realized by a REST serverwritten in Python. The key feature is that the userdoes not need to recompile the source code. It isachieved by using a dynamic library loader, whichautomatically loads and links device supportlibraries, see the illustration on the left.
The spectrum of turn-by-turn trajectory shows two prominent peaks in eachplane, in addition to the tunes . These peaks always occur at, see figure abovea fixed frequency throughout the entire acceleration cycle ( ). TheTHPRO082exact origins of this perturbation is not currently understood and subject tobeam dynamics studies. hopedIt is that the cause of this perturbation can belocated more precisely in the future when more BPM data will be available.
This project has received funding from the European Union's Seventh Framework Programme forresearch, technological development and demonstration under grant agreement no 289485.
Spectrum of horizontal and vertical beam trajectoriesduring turns 85,000-90,000
Overview of .DCDB architecture
P serformance improvement using Genetic Algorithms (X. Gavalda, et al.-SOLEIL)
Multi-Objective Genetic Algorithm (MOGA) and the tracking code ELEGANThave been used theto optimize the linear and non-linear beam dynamics ofSOLEIL .synchrotron light source in France
First, the effects of the sextupoles on the beamdynamics of the machine were optimized. In a secondstep, MOGA-based optimization basis toare used as astudy different scenarios storage ringupgrade of thewith on example shown in the figure to the right. Theseupgrades will target a reduction of the effectivehorizontal emittance increase the, thereby helping tooverall ( )brightness of the facility .MOPMR007
Optimization results of MOGA using 2 quadrupoles,11 families of sextupoles without magnetic errorsor vacuum chambers at SOLEIL during 5 days
Perturbation Measurements of a Model Cavity (X. Chen, et al.- GSI)
A diagnostics cavity was manufactured and delivered to GSI at the end of lastyear. It has been used as a prototype to prove the design concept of a cavity-based, transversely sensitive, heavy-ion detector by means of Schottkynoises. Tests were carried out on a dedicated platform for shunt impedancemeasurements of the cavity .( )THPM101
In the setup the circular cavity stands on a 2-Dhigh-precision movement unit, consisting of twoactive tracks and two passive tracks. A 3 mm thickceramic rod goes through the beam pipe and isfastened to a pair of height gauges at both sides.
All met for a dedicatedFellows ResearcherSkills School in Liverpool, UK in June 2013.During the week-long school they were providedwith subject-specific training in addition togeneric topics, including project management,scientific writing, problem solving techniquesand building bridges between academia andindustry.
Expert on 'Simulation Tools' andtraining days'Beam Diagnostics' were held for all Fellows,hosted by CST AG and Bergoz, respectively.A Workshop on Libera was held atInstrumentation Technologies in April 2014 andone on Beam Instrumentation focussing onbeam profile and position monitoring, loss washosted by CIVIDEC in Vienna, May 2014in .More are in the planning.
Full details and information about how to register can be found in thenetwork‘s quarterly and its Facebook page. In order to subscribe,newsletterplease send an email to the coordinator or ‚like‘ the project.
The concept for this chool had initially been developed by DITANET, but hasssince been refined is now offered to all PGR students in the School of. ItPhysical Sciences at University of Liverpool. Discussions with other HEIs areongoing with the aim to let more benefit from this successfulresearchersscheme which was recently commended as by the EU.a success story
Distribution of the shunt impedance .
