Paper | Title | Other Keywords | Page |
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TUPWA014 | Influence of errors on the ESRF Upgrade Lattice | lattice, multipole, dynamic-aperture, alignment | 1426 |
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To determine the tolerable alignment and magnetic errors for the ESRF upgrade, we study their influence on Touschek lifetime and dynamic aperture. The correction of each set of errors studied is performed with a commissioning-like procedure, from the search for a closed orbit to the correction of resonance driving terms. Each kind of error is studied independently for each relevant family of magnets. The tolerable values deduced from the analysis are within the practical limits. The impact of the measured and simulated survey errors is also considered, defining the position of the currently installed lattice as the one of least impact for the realignment of X-ray beamlines. | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-TUPWA014 | ||
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TUPJE062 | First Transparent Realignment Tests at the Diamond Storage Ring | controls, alignment, storage-ring, emittance | 1772 |
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The Transparent Realignment of the Diamond Storage Ring is a program of work to improve the mechanical alignment of the machine by carefully moving the magnet girders with a virtually zero impact on the associated beamlines. The girders can be moved by means of a 5-axis motion system under remote control via the EPICS toolkit from the Diamond Control Room. Currently three cells (three girders in each) have been equipped with a permanent protection system to prevent excessive deflection across each of the inter-girder vacuum bellows. The protection and motion systems are installed in the associated Control and Instrumentation Area (CIA). Full commissioning of the motion and protection systems have been completed. Results from the alignment test sessions are hereby reported. | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-TUPJE062 | ||
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WEBD2 | Survey of Commissioning of Recent Storage Ring Light Sources | factory, synchrotron, vacuum, lattice | 2482 |
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Funding: Work supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357. The Advanced Photon Source and other existing storage ring light sources are contemplating replacing an existing, operating storage ring with a multi-bend achromat lattice. One issue is that existing light sources have large user communities who are greatly inconvenienced by extended shutdowns. Hence, there will be a premium placed on rapid commissioning of the new lattice. To better understand the possibilities, we undertook a survey of recent commissioning experience at third-generation light sources. We present a summary of that survey here. |
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Slides WEBD2 [0.173 MB] | ||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-WEBD2 | ||
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WEPMN067 | Upgrade of the TCDQ Diluters for the LHC Beam Dump System | vacuum, controls, PLC, extraction | 3079 |
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The TCDQ diluters are installed as part of the LHC beam dump system to protect the Q4 quadrupole and other downstream elements during a beam dump that is not synchronised with the abort gap, or in case of erratic firing of the extraction kickers. These diluter elements installed during Run 1 were compatible with beam up to 60 % of the nominal intensity, which was insufficient for the second run of the LHC. This paper describes the requirements for the upgrade done during the First Long Shutdown (LS1), to make the TCDQ compatible with the full 7 TeV LHC beam at intensities required for the future runs of the machine. Subsequently the mechanical design changes, implementation and commissioning of the TCDQ are reported. | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-WEPMN067 | ||
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WEPHA044 | Alignment Design and Status of Taiwan Photon Source | network, alignment, storage-ring, booster | 3212 |
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After the construction of Taiwan Photon Source (TPS) was finished, the variation of the survey fiducials was stable. However, the following precise alignment work is concerned by the change of temperature critically. In this paper, the whole process of alignment work in the TPS storage ring with the relation of survey network and thermal issues of the environment will be described. We analysed these survey data so that the correction of survey network could be estimated by the change of temperature, thus all the elements for example, booster, pedestals, and girders could be positioned within the shortest time. | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-WEPHA044 | ||
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THYB2 | The Auto-Alignment Girder System of TPS Storage Ring | alignment, controls, storage-ring, laser | 3649 |
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To meet the stringent beam dynamic specs of TPS with high brilliance and low emittance characteristics, also to align the girders precisely and quickly with less manpower, the girder system for TPS (Taiwan Photon Source) storage ring is of an auto-tuning design. Each girder can be fine adjusted in 6 axes with 6 motorized cam movers of kinematic mounting design on 3 pedestals. With sensors between each girder, there are 72 girders to make up a whole ring auto-alignment girder system. All the sub-systems were carefully assembled and calibrated in a rented factory outside NSRRC during the civil construction period. Mock-up systems were set up and the auto–alignment processes were examined to modify interferences or mistakes between sub-systems. After the TPS building was nearly completed, the laser tracker alignment network was set up first and then the installation took place. When all the girders and sensors were installed into the tunnel, the auto-alignment procedures were carried out to fine tune all the girders. This paper describes the design, preparation, installation and implementation of this auto-alignment girder system for TPS storage ring. | |||
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Slides THYB2 [9.476 MB] | ||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-THYB2 | ||
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