Paper | Title | Other Keywords | Page |
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MOPE10 | Dynamic Analysis and Measurement of Ground Motion for the Solaris - National Synchrotron Radiation Centre in Cracow | ion, experiment, ground-motion, synchrotron | 24 |
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The paper presents the results of the ground motion measurements and dynamic analysis performed in the Polish synchrotron radiation facility Solaris. The analysis has been carried out within the framework of the installation experimental lines inside Solaris building and accelerator tunnel. The equipment used in this study consists of 4 seismic, high sensitivity, ceramic flexural ICP accelerometer Models 393B31 (PCB), which performed measurements in one vertical directions. The first analysis was to evaluate the power spectral density for each sensors and event. The power spectral density is calculated from the auto power spectrum. The power spectral density shows a typical curve with theμseismic peak between 0.2 and 0.4 Hz. It is important to point that ground vibrations should not be ignored in planning accelerator facility. All over the measurement, the RMS integrated level in the vertical direction at 1 Hz were calculated and presented in paper. | |||
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Poster MOPE10 [2.916 MB] | ||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE10 | ||
About • | paper received ※ 09 September 2016 paper accepted ※ 23 September 2016 issue date ※ 22 June 2017 | ||
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MOPE30 | The Development of CuCrZr High Heat Load Absorber in TPS | ion, vacuum, synchrotron, radiation | 77 |
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TPS project in National Synchrotron Radiation Research Center (NSRRC) in Taiwan has reached 500mA design goal. Several upgrades and design enhancements is also under development. CuCrZr copper alloy material has been selected to examine its UHV compatibility, machinability and high heat load sustainability. Most importantly, the absorber is made entirely by CuCrZr (including two end flanges) and installed in the mid-section of double minimum of tandem EPU48 undulators to shadow beam miss-steered synchrotron radiation from upstream EPU. Both the result and fabrication time (without brazing) are promising. | |||
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Poster MOPE30 [0.547 MB] | ||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-MOPE30 | ||
About • | paper received ※ 06 September 2016 paper accepted ※ 19 September 2016 issue date ※ 22 June 2017 | ||
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TUAA01 | Precision Mechanical Design of a Miniature Dynamic Mirror Bender for the SSRF Beamline Upgrade Project | ion, controls, SRF, synchrotron | 108 |
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Funding: Work supported by the U.S. Department of Energy, Office of Science, under Contract No. DE-AC02-06CH11357 and Argonne SPP project 85·1077. Work at SINAP supported by NNSF of China No. U1332120. Dynamic mirror benders which enable high precision figuring of planar substrates for x-ray focusing are widely used as conventional optical equipment in various synchrotron radiation beamlines. Especially, in cases for x-ray focusing optics coated with multilayers in a Kirkpatrick-Baez configuration as the final focusing elements immediately upstream of the sample, the dynamic mirror benders provide high precision figuring to allow the mirror figure to be tuned to optimize the focusing at different incidence angles to cover a wide energy range *. Recently, collaboration between Argonne National Laboratory and Shanghai Institute of Applied Physics (SINAP) has produced designs of a new miniature dynamic mirror bender with Argonne’s laminar nanopositioning flexure technique ** for beamline upgrade project at the Shanghai Synchrotron Radiation Facility (SSRF). The mechanical design and finite element analyses of the miniature dynamic mirror bender, as well as its initial mechanical test results with laser interferometer are described in this paper. * R. Barrett, J. Härtwig, C. Morawe et al, Synchrotron Radiation News, 23, No.1, 36-42(2010) ** U.S. Patent granted No. 6,984, 335, D. Shu, T. S. Toellner, and E. E. Alp, 2006. |
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Slides TUAA01 [7.411 MB] | ||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUAA01 | ||
About • | paper received ※ 10 September 2016 paper accepted ※ 23 September 2016 issue date ※ 22 June 2017 | ||
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TUBA01 | The Design of a Precision Mechanical Assembly for a Hard X-ray Polarizer | ion, experiment, simulation, controls | 116 |
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Funding: Work supported by the U.S. Department of Energy, Office of Science, under Contract No. DE-AC02-06CH11357 Hard x-ray polarisers are commonly applied in synchrotron radiation research to produce photons in a pure polarization state, and as polarization filters to analyse the photon’s polarization state after their interaction with a sample medium. We present the design of a mechanical assembly suitable for a hard X-ray polariser that requires multiple degrees of freedom with the base stage capable of handling at least 2-3 kg loads. The intermediary stages (roll, yaw, and translation directions) consist of commercially available tip/tilt and translational stages (Kohzu Precision Co., LTD). However, the requirements of the pitch stage are much more demanding and require a custom-designed flexure-based rotation stage. The design and analysis of this flexure-based rotation stage will be discussed in this study. This will include FEA analysis of the dynamic response and rotation range capabilities which will then be compared to mechanical performance test results using laser interferometers and accelerometer sensors. |
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Slides TUBA01 [1.586 MB] | ||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUBA01 | ||
About • | paper received ※ 09 September 2016 paper accepted ※ 20 September 2016 issue date ※ 22 June 2017 | ||
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TUPE04 | Coherent Soft X-Ray EPU Vacuum Chamber Thermal Analysis for Synchrotron Radiation Protection | ion, vacuum, synchrotron, radiation | 159 |
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Funding: Department of Energy The purpose of this study was to determine the effect of beam mis-steering, on the temperature of the vacuum chamber. The chamber used for this study was for the Coherent Soft X-Ray (CSX) Elliptically Polarizing Undulator (EPU). Finite Element Analysis was conducted on the vacuum chamber to determine the temperature distribution on the chamber for set values of beam mis-steer, for NSLS-II. These results were then compared with on-site temperature measurements taken using RTD¿s, as well as thermal sensitive cameras. The accuracy of these results was analyzed and further FEA studies were proposed for steeper beam mis-steers and beam offsets. |
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DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE04 | ||
About • | paper received ※ 09 September 2016 paper accepted ※ 20 September 2016 issue date ※ 22 June 2017 | ||
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TUPE08 | Finite Element Analysis of a Photon Absorber Based on Volumetric Absorption of the Photon Beam | ion, photon, radiation, simulation | 169 |
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Funding: This research used resources of the APS, a U.S. Department of Energy (DOE) Office of Science User Facility operated by Argonne National Laboratory under Contract No. DE-AC02-06CH11357. Designing photon absorbers for next generation multibend achromat storage rings can be challenging considering the high power densities and limited space that will typically be present. The potential for problematically high material temperatures and thermal gradients can be expected to be greater than that for previous generation machines on account of the shorter source-to-receiving surface distances. Conventionally, photon absorbers are made from copper which is highly opaque to x-rays. A consequence of this is that the majority of the heat is absorbed within a very short distance of the surface. Utilizing materials that allow a more volumetric absorption of the radiation can improve the efficiency of heat removal as it can keep surface temperatures and thermal gradients lower than would otherwise be possible. This paper discusses multiphysics analysis of a crotch absorber for the APS Upgrade project (APS-U) via full-coupling of heat-transfer and structural mechanics. The simulation results are discussed in detail. |
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Poster TUPE08 [1.943 MB] | ||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE08 | ||
About • | paper received ※ 10 September 2016 paper accepted ※ 23 September 2016 issue date ※ 22 June 2017 | ||
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TUPE10 | A Thermal Exploration of Different Monochromator Crystal Designs | ion, lattice, synchrotron, cryogenics | 176 |
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Eight potential monochromator crystal designs were subjected to a combination of three different beam powers on two different footprints. The temperature and thermal deformation were determined for each. It was found that thermal deformation of the lattice is negligible compared to the surface curvature, and that while the thinnest crystal wafer showed the smallest temperature increase, crystals cooled from the bottom alone demonstrated a far more uniform thermal deformation and a larger radius of curvature. | |||
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Poster TUPE10 [3.411 MB] | ||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-TUPE10 | ||
About • | paper received ※ 10 September 2016 paper accepted ※ 21 September 2016 issue date ※ 22 June 2017 | ||
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WEPE10 | Mechanical Design of Pulse-by-Pulse X-Ray Beam Position Monitor Using Diamond Heat Sink | ion, detector, radiation, cathode | 333 |
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Funding: This work was partly supported by Japan Society for the Promotion of Science through a Grant-in-Aid for Scientific Research(c), No.20416374. The pulse-by-pulse X-ray beam monitor equipped with microstripline structure had been developed at SPring-8. This monitor has a potential to function as (1) a pulse intensity monitor, (2) a pulse-by-pulse X-ray beam position monitor (XBPM), and (3) a pulse timing monitor. In insertion device beamlines, however, it cannot be used without further improvement because of heat-resistance problem. Therefore, we examined a pulse-by-pulse XBPM for insertion device beamlines by introducing heat resistance structure, which employed a diamond heat sink. Thermal finite element analysis was carried out to design an effective structure of a detector head and the holder. Evaluation tests of the prototype will be also presented in this contribution. |
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Poster WEPE10 [1.140 MB] | ||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2016-WEPE10 | ||
About • | paper received ※ 08 September 2016 paper accepted ※ 16 September 2016 issue date ※ 22 June 2017 | ||
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