Paper | Title | Page |
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TUOPMA05 |
Updates on the Storage Ring Vacuum System for Spring-8-II | |
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At SPring-8, aiming at the realization of upgrade project (SPring-8-II), development of hardware in each sub-system has been energetically advanced. Furthermore, a test half-cell construction is underway and scheduled for completion in this summer, so that interference between sub-systems and consistency in the alignment strategy could be confirmed. As for the vacuum system, development of a 12-m-long integrated vacuum chamber (12m-LIC) made of stainless steel and discrete photon absorbers with compact design are important keys to the success. The straight chamber was fabricated from several parts, mainly formed by roll-forming, and unitized by means of LBW according to proper longitudinal sections. Then, they will be integrated into the 12m-LIC with the bending chamber, photon absorbers and other vacuum components including transport gate valves at both ends. There are two kinds of photon absorbers, horizontal and vertical insertion types, both of which are equipped with scattering blocking structure. The configuration of the absorbing body was designed so as not to generate the plastic deformation with the heat transfer coefficient distribution calculated by CFD analysis. | ||
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Slides TUOPMA05 [16.671 MB] | |
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TUOPMA06 |
Status of the ESRF EBS Storage Ring Engineering and Construction | |
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In the frame of its Extremely Brilliant Source (EBS) upgrade, the ESRF is preparing the replacement of its existing storage ring by a new ring based on a 7-bend achromat lattice enabling to reduce the electron beam horizontal emittance by a factor 30. The project involves challenging engineering requirements due to the large number of magnets, space constraints and specified geometrical precision. In order to validate the feasibility of this very compact assembly with real parts, a Mock-up of a complete EBS cell was assembled in 2017. The preparation of fully equipped girders with all components assembled, aligned and tested was started in October 2017 and is progressing as a rate of 3 per week. The main technical achievements and issues encountered during manufacturing of magnets, girders, chambers and absorbers will be presented, together with an outline of the planned dismantling and installation phases, scheduled from December 2018. This presentation is given on behalf of the ESRF EBS engineering team: J-C Biasci, J Borrel, T Brochard, F Cianciosi, D Coulon, Y Dabin, L Eybert, L Goirand, M Lesourd, N Louis, T Mairs, B Ogier, J Pasquaud, P Van Vaerenbergh, F Villar. | ||
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Slides TUOPMA06 [13.932 MB] | |
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TUPH04 | Progress on the Final Design of the APS-Upgrade Storage Ring Vacuum System | 30 |
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Funding: Argonne National Laboratory's work is supported by the U.S. Department of Energy, Office of Science under contract DE-AC02-06CH11357 The final design phase is underway for the APS-Upgrade project's storage ring vacuum system. Many aspects of the design are being worked on to address challenging interfaces and to optimize vacuum system performance. Examples of recent work include updates to ray tracing and vacuum analysis, new developments in vacuum chamber and photon absorber design, and further refinement of vacuum pumping plans to achieve the best possible pressure distributions. Recent R&D work and results from a vacuum system sector mockup have also informed designs and installation plans. An overview of progress in these areas and remaining challenges is pre-sented. |
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Poster TUPH04 [7.042 MB] | |
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-TUPH04 | |
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TUPH10 | Interfaces with Operational Systems APS Upgrade Project Removal and Installation | 43 |
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Funding: Created by UChicago Argonne, LLC, Operator of Argonne National Laboratory. Argonne, a U.S. Department of Energy Office of Science laboratory, is operated under Contract No. DE-AC02-06CH11357. A critical time for the APS Upgrade Project is the twelve month dark period in which the current accelerator, front ends, and insertion devices will be removed and the new MBA will be installed. In addition to the technical interfaces, there are a significant number of operational support systems and utilities that will be affected. For the dark period to be a success, these additional interfaces need to be described and their interaction with the removal and installation processes defined. This poster describes many of these additional systems and their interfaces. |
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Poster TUPH10 [0.354 MB] | |
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-TUPH10 | |
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TUPH12 | Multipole Injection Kicker (MIK), a Cooperative Project SOLEIL and MAX IV | 48 |
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The cooperative MIK project SOLEIL / MAX IV started in 2012 and is part of the Franco-Swedish scientific collaboration agreement, signed in 2009 and followed by framework agreements signed in 2011. The MIK is a particular electromagnet using theoretical principles of the 1950s and recently used by the new generation of synchrotrons to significantly improve the Top-Up injection of electrons into the storage rings. Indeed, this type of magnet can drastically reduce disturbances on stored beams and also offers substantial space savings. The MIK is a real opportunity for synchrotrons wishing to upgrade their facilities. One of the first MIK developed by BESSY II in 2010 gave significant results. These results motivated SOLEIL and MAX IV to develop together their own MIK. Many technical challenges have been overcome in the area of mechanical design and manufacture as well as in magnetic and high voltage design of the MIK. Currently the first series is in operation at MAX IV and displays already outstanding performances. Optimization work is in progress. | ||
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Poster TUPH12 [4.376 MB] | |
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-TUPH12 | |
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TUPH14 | Status of the Conceptual Design of ALS-U | 53 |
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Funding: This work was supported by the Director, Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231 The ALS-U conceptual design promises to deliver diffraction limited performance throughout the soft x-ray range by lowering the horizontal emittance to about 70 pm rad resulting in 2-3 orders of brightness increase for soft x-rays compared to the current ALS. The design utilizes a nine bend achromat lattice, with reverse bending magnets and on-axis swap-out injection utilizing an accumulator ring. This paper shows some aspects of the completed conceptual design of the accelerator, as well as some results of the R&D program that has been ongoing for the last years. [1] H. Tarawneh et al., J. Phys.: Conf. Ser. 493 012020, 2014. [2] C. Steier et al., in Proceedings of IPAC2015, 1840, 2015. |
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DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-TUPH14 | |
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TUPH32 | Overview of Sesame Water Cooling System Design & Operation | 108 |
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Funding: IAEA SESAME started operation in January 2017. In order to receive heat deposited in various synchrotron devices during operation, a low-conductivity water cooling system was installed. Within this paper the design, construction and operation of the water cooling system will be discussed, Both Hydraulic and Thermal Behavior of the system will be analyzed and discussed with numerical simulation means as well as real operation pressure and temperature data for the purpose of a better understanding of the cooling system |
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DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-TUPH32 | |
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TUPH35 | Stainless Steel Vacuum Chambers for the EBS Storage Ring | 118 |
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The upgrade of the ESRF (ESRF-EBS) is a highly challenging project in many respects. One major challenge is to manufacture vacuum chambers within extremely tight tolerances. Indeed the chamber envelope is constrained by the very limited space available between the beam stay clear and the magnets pole tips, requiring profile tolerances of just 500 um over the full length of the chamber for a width of 55 mm. An additional challenge is guaranteeing the perpendicularity (up to 0.75 mrad) between the CF flanges and the chamber body. While a design using discrete removable absorbers was chosen, one family of chambers contains a distributed absorber required to protect the insertion devices from 600 W of upstream dipole X-rays. Two companies have been selected to produce a total of 296 stainless steel chambers. Given the unusual tolerance requirements, the manufacturers have been obliged to adapt and develop their production techniques to overcome the challenges. During manufacture, vacuum leaks were discovered on some of the BPM buttons. This paper will also present the two techniques that ESRF has developed in order to prevent the integration of potentially leaking buttons. | ||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-TUPH35 | |
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TUPH38 | Preliminary Design of the Magnets of HALS | 129 |
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The Hefei Advanced Light Source (HALS) is a future soft X-ray diffraction-limited storage ring at National Synchrotron Radiation Laboratory (NSRL) of China. This project aims to improve the brilliance and coherence of the X-ray beams and to decrease the horizontal emittance. The lattice of the HALS ring relies on magnets with demanding specifications, including combined function dipole-quadrupoles (DQs) with high gradients, dipoles with longitudinal gradients (DLs), high gradient quadrupoles and sextupoles. All these magnets have been designed using POSSION and Radia. Preliminary design of them are presented in this paper. | ||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-TUPH38 | |
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TUPH40 |
Advanced Photon Source Water Systems History and Maintenance | |
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Funding: Office of Science - Office of Basic Energy Sciences Abstract Particle Accelerators require significant amounts of water to cool components and devices. Care are and planning are required to maintain these large systems. The purpose here is to provide insight into the operation and maintenance of water systems at the Advanced Photon Source (APS), Argonne National Laboratory. Low Conductivity Water (LCW) systems are integral in the design of particle accelerators. Initial design requirements often change over time to accommodate new requirements. Some of the issues seen over the 23-year operation of the APS are erosion, clogging, and the need for more precise temperature control. Water chemistry, flow velocity, type of control systems and sensors, along with maintenance practices all contribute to successful operation. We will discuss our successes and failures in regards to water quality, temperature stability, reliability and longevity of the system, as well as equipment maintenance and repair. These aspects of water system design and maintenance are all critical to reliable operations of the APS. This document will provide useful information for institutions that intend to design, build, and/or maintain a particle accelerator. Advanced Photon Source, a U.S. Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory under Contract No. DE-AC02-06CH11357. |
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TUPH44 |
Capacitive Beam Position Monitor Design and Study of the Project SARAF-LINAC | |
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A capacitive beam position monitor has been designed and developed for the future SARAF-LINAC (phase 2), which yields 5 mA proton and deuteron beams at energies up to 40 MeV. This paper address all aspects to the design, study and test of the BPM, while emphasizing the mechanical design to the determination of the capacitance of the BPM. The numerical simulation for different mechanical designs is performed with CST STUDIO SUITE using the wake-field solver. The simulation results gives a good agreement with the measured capacitance using impedance analyzer. A calibration test stand is under development. | ||
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